EVCO c-pro mega RACK User Manual

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PROGRAMMABLE CONTROLLERS FOR

SINGLE CIRCUIT, DUAL CIRCUIT AND

TRIPLE CIRCUIT

COMPRESSOR PACKS

UP TO 8/12 COMPRESSORS

APPLICATION MANUAL

CODE 144RACKMGE04

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Important

Please read these instructions carefully prior to installation and use, and follow all the precautions for installation and electrical connections; keep these instructions with the device for future consultation.

The device must be disposed of in accordance with local regulations pertaining to the collection of electrical and electronic appliances.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Table of contents

1 GENERAL INFORMATION......................................................................................................5

1.1 Description ............................................................................................................................5

2 APPLICATIONS.........................................................................................................................8

2.1 Application 1: use of the C-PRO MEGA RACK (single circuit control unit)......................9

2.2 Application 2: use of the C-PRO GIGA RACK (dual circuit control unit with separate

condensation).................................................................................................................................10

2.3 Application 3: use of the C-PRO MEGA RACK with the C-PRO EXP MEGA I/O

expansion unit (dual circuit control unit with separate condensation)...........................................11

2.4 Application 4: use of the C-PRO GIGA RACK with the C-PRO EXP GIGA I/O expansion

unit (dual circuit control unit with separate condensation)............................................................12

2.5 Controller electrical connections.........................................................................................13

2.5.1 C-PRO MEGA RACK electrical connections.............................................................13

2.5.2 C-PRO GIGA RACK electrical connections...............................................................14

2.5.3 Input and output identification tables...........................................................................15

2.6 Preset configurations...........................................................................................................19

2.6.1 C-PRO MEGA RACK preset configurations (single circuit compressor packs) ........19

2.6.2 C-PRO GIGA RACK preset configurations (dual circuit compressor packs).............20

2.7 I/O expansion unit electrical connections ...........................................................................21

2.7.1 C-PRO EXP MEGA electrical connections.................................................................21

2.7.2 C-PRO EXP GIGA electrical connections...................................................................22

2.7.3 Input and output identification tables...........................................................................23

3 COMPONENT NETWORK AND ACCESSORIES ................................................................26

3.1 Example for the C-PRO MEGA RACK and C-PRO GIGA RACK built-in versions........26

3.2 Example for the C-PRO MEGA RACK and C-PRO GIGA RACK case versions Errore. Il

segnalibro non è definito.

4 USER INTERFACE ..................................................................................................................27

4.1 Display and keypad.............................................................................................................27

4.1.1 Built-in interface.................................................Errore. Il segnalibro non è definito.

4.1.2 V- View user terminal......................................... Errore. Il segnalibro non è definito.

4.2 Page list ...............................................................................................................................28

4.3 Conditioned visibility..........................................................................................................34

5 CONFIGURATION PARAMETERS .......................................................................................35

6 REGULATIONS........................................................................................................................68

6.1 Machine configuration ........................................................................................................68

6.2 Machine and individual circuit status..................................................................................69

6.3 Compressor regulation ........................................................................................................71

6.3.1 Side band regulation.....................................................................................................71

6.3.2 Neutral zone regulation................................................................................................72

6.3.3 Side band regulation with inverter...............................................................................73

6.3.4 Neutral zone regulation with inverter ..........................................................................74

6.4 Compressor management....................................................................................................75

6.4.1 Compressors per circuit ...............................................................................................76

6.4.2 Compressor status........................................................................................................76

6.4.3 Compressor rotation.....................................................................................................77

6.4.4 Increment management................................................................................................78

6.4.5 Protective device timings.............................................................................................80

6.4.6 Startup delay from reset...............................................................................................81

6.4.7 Safety device inputs.....................................................................................................81

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

6.4.8 Inverter configuration ..................................................................................................82

6.4.9 Compressors of different nominal power.....................................................................83

6.4.10 Suction line loss of load compensation........................................................................84

6.4.11 Refrigeration power incrementing at high pressures ...................................................85

6.5 Condensation regulation......................................................................................................86

6.5.1 Side band regulation.....................................................................................................86

6.5.2 Neutral zone regulation................................................................................................86

6.5.3 Side band regulation with inverter...............................................................................87

6.5.4 Neutral zone regulation with inverter ..........................................................................88

6.5.5 Unique condensation (dual/triple circuits only)...........................................................89

6.6 Fan management..................................................................................................................90

6.6.1 Fans per circuit.............................................................................................................90

6.6.2 Fan status......................................................................................................................90

6.6.3 Fan rotation..................................................................................................................91

6.6.4 Protective device timings.............................................................................................92

6.6.5 Safety device inputs.....................................................................................................93

6.6.6 Inverter configuration ..................................................................................................93

6.7 Miscellaneous controls........................................................................................................94

6.7.1 Inverter configuration (compressors/fans)...................................................................94

6.7.2 Compressor time bands................................................................................................95

6.7.3 Fan time bands.............................................................................................................96

6.7.4 Digital input setpoint alteration....................................................................................97

6.7.5 Supervisor setpoint alteration.......................................................................................97

6.7.6 Manual operation .........................................................................................................97

6.7.7 Floating condensation management.............................................................................98

6.7.8 Temperature probes......................................................................................................99

6.7.9 Last maintenance date..................................................................................................99

6.7.10 Restore default parameters...........................................................................................99

7 DIAGNOSTICS.......................................................................................................................100

7.1 Manual and automatic alarms............................................................................................100

7.1.1 Manual alarms............................................................................................................100

7.1.2 Automatic alarms.......................................................................................................101

7.2 Alarm table........................................................................................................................101

7.3 Alarm relays......................................................................................................................104

8 LIST OF MODBUS VARIABLES..........................................................................................106

8.1.1 Modbus export table (C-PRO GIGA)........................................................................106

8.1.2 Modbus export table (C-PRO MEGA) ......................................................................122

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

1 GENERAL INFORMATION

1.1 Description

This application uses C-PRO MEGA and C-PRO GIGA controllers to manage a compressor packs composed of one, two or three circuits with a maximum number of 8 compressors (if using C-PRO MEGA controllers) or 12 compressors (if using C-PRO GIGA controllers). A compressor packs control system is required to manage the compressors in order to maintain the evaporation pressure at the desired value; more specifically, it must guarantee the production of cold, for example for the preservation of foodstuffs. Continuous generation of cold is required for this, using a process which must continue without any interruptions, except for normal maintenance operations. The C-PRO MEGA and C-PRO GIGA controllers are dedicated to this process, managing all the components of the refrigeration circuit, maintaining the required conditions with the greatest possible efficiency (greater output = lower running costs), with optimal handling of mechanical components in order to reduce breakdowns (for example, fewer start-ups = less mechanical stress). Two types of regulation may be selected for controlling pressure or temperature:

⋅ Side Band ⋅ Neutral Zone

Safety devices are managed for each circuit so as to promptly detect any malfunctions. Each safety device is associated with a particular alarm, which will be triggered in order to identify the type of fault. The outcome of certain alarms will be to shutdown the relevant mechanical devices, in order to avoid further faults; others will only indicate the fault, without having any effect on the operation of the machine. The application has a navigable user interface, by means of which it is possible to define and set all configuration and operational parameters. The user interface is subdivided into four main levels:

⋅ User ⋅ Service ⋅ Installer ⋅ System builder

Each level is protected by a separate password. At the system builder level, the user interface displays a series of modifiable configuration screens (wizards) allowing easy setting of the number of circuits, compressors, fans and the corresponding safety devices used for the protection of the mechanical devices. There are also several free-access pages, not password protected, for checking the operational status of the system at that particular time. In addition to the aforementioned four levels, there is also a Clock menu (for setting the parameters associated with the system RTC, such as for example those related to management of the time bands for variation of the setpoints). The versions have an integrated 4 x 20 character alphanumeric display, keypad and warning LEDs. Each version has an optoisolated RS-485 port (for connection to the RICS or other BMS supervision system) and a non-optoisolated CAN port (for connection to I/O expansion unit).

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

C-PRO MEGA

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

C-PRO GIGA

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

2 APPLICATIONS

Using the CAN protocol, it is possible to connect an 8 relay (C-PRO EXP MEGA) or 13 relay (C-PRO EXP GIGA) expansion module to the controllers.

Management of four different types of control unit is envisaged:

1) Application 1: C-PRO MEGA RACK (for single circuit control units; C-PRO MEGA

RACK preset configuration) Total No. of digital outputs = 8 Total No. of digital inputs = 10 Total No. of analogue inputs = 8 Total No. of analogue outputs = 4

2) Application 2: C-PRO GIGA RACK (for dual circuit control units; preset

configuration) Total No. of digital outputs = 13 Total No. of digital inputs = 12 Total No. of analogue inputs = 8 Total No. of analogue outputs = 4

3) Application 3: C-PRO MEGA RACK + C-PRO EXP MEGA (e.g. for dual circuit

control units) Total No. of digital outputs = 8 + 8 = 16 Total No. of digital inputs = 10 + 8 = 18 Total No. of analogue inputs = 8 +4 = 12 Total No. of analogue outputs = 4

4) Application 4: C-PRO GIGA RACK + C-PRO EXP GIGA (e.g. for dual circuit control

units)

5) Total No. of digital outputs = 13 +13 = 26

Total No. of digital inputs = 12 +10 = 22 Total No. of analogue inputs = 8 +4 = 12 Total No. of analogue outputs = 4

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

2.1 Application 1: use of the C-PRO MEGA RACK (single circuit

control unit)

As a preset configuration, the C-PRO MEGA RACK is configured to manage single circuit compressor packs; the services mentioned in the figure below refer specifically to the preset configurations.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

2.2 Application 2: use of the C-PRO GIGA RACK (dual circuit

control unit with separate condensation)

The C-PRO GIGA RACK is pre-configured to control dual circuit compressor packs; the services mentioned in the figure below refer precisely to the preset configurations.

Compressors 1 and 2 (and related load increments) appertain to circuit 1; compressors 3 and 4 (and related load increments) appertain to circuit 2. Fans 1 and 2 appertain to circuit 1; fans 3 and 4 appertain to circuit 2.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

2.3 Application 3: use of the C-PRO MEGA RACK with the C-PRO

EXP MEGA I/O expansion unit (dual circuit control unit with separate condensation)

The C-PRO MEGA RACK is pre-configured to control single circuit compressor packs; the services mentioned in the figure below refer to an example of a dual circuit control unit with separate condensation.

Compressors 1, 2 and 3 appertain to circuit 1; compressors 4, 5 and 6 appertain to circuit 2. Fans 1, 2 and 3 appertain to circuit 1; fans 4, 5 and 6 appertain to circuit 2.

The C-PRO MEGA RACK and C-PRO EXP MEGA power supplies must be galvanically isolated from one another.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

2.4 Application 4: use of the C-PRO GIGA RACK with the C-PRO

EXP GIGA I/O expansion unit (dual circuit control unit with separate condensation)

The C-PRO GIGA RACK is factory pre-configured to control dual circuit compressor packs; the services mentioned in the figure below refer to an example of a dual circuit control unit with separate condenser, where the controller is used with an I/O expansion unit.

Compressors 1, 2 and 3 appertain to circuit 1; compressors 4, 5 and 6 appertain to circuit 2. Fans 1, 2 and 3 appertain to circuit 1; fans 4, 5 and 6 appertain to circuit 2.

The C-PRO GIGA RACK and C-PRO EXP GIGA power supplies must be galvanically isolated from one another.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

2.5 Controller electrical connections

The layout relating to the controllers electrical connections is shown below, with tables listing the meanings of the inputs and outputs.

2.5.1 C-PRO MEGA RACK electrical connections

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

2.5.2 C-PRO GIGA RACK electrical connections

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

2.5.3 Input and output identification tables

Card with 12 VDC + 12 VDC dual power supplies

Conn.

C1-1 VCC main card power supply input (+13 VDC) C1-2 GND main power supply reference

JA-1 VDC active probe power supply (*1) JA-2 AI 1 No.1 universal analogue input (NTC, PTC, 0..5V, 0..10V, 0..20 mA, 4..20 mA) JA-3 GND analogue input common ground

JB-1 VDC active probe power supply (*1) JB-2 AI 2 No.2 universal analogue input (NTC, PTC, 0..5V, 0..10V, 0..20 mA, 4..20 mA) JB-3 GND analogue input common ground

JC-1 VDC active probe power supply (*1) JC-2 AI 3 No.3 configurable analogue input (NTC, 0..20 mA, 4..20 mA) JC-3 AI 4 No.4 configurable analogue input (NTC, 0..20 mA, 4..20 mA) JC-4 GND analogue input common ground

JD-1 VDC active probe power supply (*1) JD-2 AI 5 No.5 configurable analogue input (NTC, 0..20 mA, 4..20 mA) JD-3 AI 6 No.6 configurable analogue input (NTC, 0..20 mA, 4..20 mA) JD-4 AI 7 No.7 configurable analogue input (NTC, 0..20 mA, 4..20 mA) JD-5 AI 8 No.8 configurable analogue input (NTC, 0..20 mA, 4..20 mA) JD-6 GND analogue input common ground

JE-1 COM digital input common connection JE-2 JE-3 JE-4 COM digital input common connection

JF-1 COM digital input common connection JF-2 DI 3 No.3 digital input 12-24 VAC/DC JF-3 DI 4 No.4 digital input 12-24 VAC/DC JF-4 DI 5 No.5 digital input 12-24 VAC/DC JF-5 DI 6 No.6 digital input 12-24 VAC/DC JF-6 COM digital input common connection

JG-1 COM digital input common connection JG-2 DI 7 No.7 digital input 12-24 VAC/DC JG-3 DI 8 No.8 digital input 12-24 VAC/DC JG-4 DI 9 No.9 digital input 12-24 VAC/DC JG-5 DI 10 No.10 digital input 12-24 VAC/DC JG-6 COM digital input common connection

YA-1 VDC power supply output connector (12 VDC) YA-2 CAN1+ connector for connecting the LOCAL CAN serial port (CAN+) YA-3 CAN1- connector for connecting the LOCAL CAN serial port (CAN-) YA-4 GND power supply reference output connector (ground)

JH-1 NC 1 relay No. 1 contact normally closed JH-2 COM 1 relay No. 1 common connection JH-3 NO 1 relay No. 1 contact normally open

JI-1 NC 2 relay No. 2 contact normally closed JI-2 COM 2 relay No. 2 common connection JI-3 NO 2 relay No. 2 contact normally open

JK-1 COM 3 relay No. 3 common connection JK-2 NO 3 relay No. 3 contact normally open

Abbre

DI 1 No.1 digital input 12-24 VAC/DC DI 2 No.2 digital input 12-24 VAC/DC

Description

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Conn.

JK-3 COM 4 relay No. 4 common connection JK-4 NO 4 relay No. 4 contact normally open JK-5 COM 5 relay No. 5 common connection JK-6 NO 5 relay No. 5 contact normally open

JL-1 COM 6 relay No. 6 common connection JL-2 NO 6 relay No. 6 contact normally open JL-3 COM 7 relay No. 7 common connection JL-4 NO 7 relay No. 7 contact normally open JL-5 COM 8 relay No. 8 common connection JL-6 NO 8 relay No. 8 contact normally open

YC-1 RS485+ connector for connecting the RS485 serial port (RS485+) YC-2 RS485- connector for connecting the RS485 serial port (RS485-) YC-3 GND connector for connecting the RS485 serial port (ground)

JM-1 AO 1 No. 1 analogue output (0,5 .. 10 V / 0 .. 20 mA / 4 .. 20 mA) JM-2 AO 2 No. 2 analogue output (0,5 .. 10 V / 0 .. 20 mA / 4 .. 20 mA) JM-3 AO 3 No. 3 analogue output (0,5 .. 10 V / 0 .. 20 mA / 4 .. 20 mA) JM-4 AO 4 No. 4 analogue output (0,5 .. 10 V / 0 .. 20 mA / 4 .. 20 mA) JM-5 GND analogue output common ground

C2-1 VCC* serial port and optoisolated analogue output secondary power supply input (+15 VDC) C2-2 GND* secondary power supply reference

Abbre

YB PRG not used

Description

* VDC=12.5 V Imax=200 mA (as the sum of the current for all VDC terminals).

Card with 24 VAC/DC power supply

Conn.

CA-1 VCC main card power supply input (23 V AC/DC) CA-2 VCC main card power supply input (23 V AC/DC)

Abbre

Description

Warning:

With reference to the “Power supply” entries, the secondary power supply feeds the following services:

• the analogue outputs

• the standard RS-485 port

• the optional RS-485 port (or RS-232 port). So that these services are optoisolated, the main power supply and the secondary power supply must be galvanically isolated from one another.

If the controller is powered with 24 VAC/DC (i.e. by means of the connector hereinafter referred to as CA), the following services will not be optoisolated:

• the analogue outputs

• the standard RS-485 port

• the optional RS-485 port (or RS-232 port).

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Other connectors (not present on the C-PRO MEGA RACK controller)

Conn.

JN-1 NC 9 relay No. 9 contact normally closed JN-2 COM 9 relay No. 9 common connection JN-3 NO 9 relay No. 9 contact normally open

JO-1 NC 10 relay No. 10 contact normally closed JO-2 COM10 relay No. 10 common connection JO-3 NO 10 relay No. 10 contact normally open

JP-1 COM11 relay No. 11 common connection JP-2 NO 11 relay No. 11 contact normally open JP-3 COM12 relay No. 12 common connection JP-4 NO 12 relay No. 12 contact normally open JP-5 COM13 relay No. 13 common connection JP-6 NO 13 relay No. 13 contact normally open

JQ-1 DI11 No. 11 digital input 230 VAC JQ-2 DI12 No. 12 digital input 230 VAC JQ-3 CONHV digital input common connection 230 VAC

Abbre

Description

Second RS-485 port (on request)

Conn.

YE-1 RS485- RS 485 - connector for connecting to supervision system YE-2 RS485+ RS 485 + connector for connecting to supervisor system YE-3 GND GND connector for connecting to supervision system, via RS485

Abbre

Description

RS-232 port (available on request, as an alternative to the second RS-485 port)

Conn.

YF-1 5Vdc RS 232 9 pole connector YF-2 YF-3

YF-4 YF-5 GND RS 232 9 pole connector YF-6 YF-7 RTS RS 232 9 pole connector -

YF-8 CTS RS 232 9 pole connector -

Abbre

Description

Tx RS 232 9 pole connector - Transmission Signal Rx RS 232 9 pole connector - Reception Signal

DTR/D

RS 232 9 pole connector -

DTR/D

RS 232 9 pole connector -

Jumper and LED meanings

JMP1 AI1 analogue input selection

Jumper not inserted 0 – 10 V input Jumper inserted 0 – 5 V, 0 – 20 mA, 4 – 20 mA, NTC, PTC input

JMP2 AI2 analogue input selection

Jumper not inserted 0..10 V input Jumper inserted 0 – 5 V, 0 – 20 mA, 4 – 20 mA, NTC, PTC input

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

JMP3 CAN terminator

Jumper not inserted Jumper inserted

Termination (120?) not inserted Termination (120?) inserted

JMP4 Local CAN serial port baud rate selection

Jumper A inserted Jumper B inserted

Baud rate = 20K

B A

Jumper A inserted Jumper B not inserted Baud rate = 50K

B A

Jumper A not inserted Jumper B inserted

Baud rate = 125K

B A

Jumper A not inserted Jumper B not inserted Baud rate = 500K

JMP5 RS-485 terminator

Jumper not inserted Jumper inserted

Termination (120?) not inserted Termination (120?) inserted

JMP6 Analogue output selection

A B C

Jumper A inserted Jumper B inserted Jumper C inserted Jumper D inserted

Output AO1 under current Output AO2 under current Output AO3 under current Output AO4 under current

D A B C

Jumper A not inserted Jumper B not inserted Jumper C not inserted Jumper D not inserted

Output AO1 under tension Output AO2 under tension Output AO3 under tension Output AO4 under tension

PLEASE NOTE:

It is not sufficient to merely set the jumper to configure the signal distributed by the analogue output, the controller machine parameters must also be set (see the chapter “Configuration of the signal distributed by the analogue output” in the Hardware Manual).

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

2.6 Preset configurations

The controller preset configurations are reported below.

2.6.1 C-PRO MEGA RACK preset configurations (single circuit compressor packs)

Analogue inputs

Suction probe Supply probe

Terminal Analogue input

AI1 AI2

Terminal Analogue output

Terminal Digital input

DI1 DI2 DI3 DI4 DI5 DI6 DI7 DI8

Terminal Digital output

DO1 DO2 DO3 DO4 DO5 DO6 DO7 DO8

Digital outputs

4 Compressors 3 Fans 1 global alarm relay

Input/output configuration

No. 1 analogue input (4..20 mA) No. 2 analogue input (4..20 mA)

No. 1 digital input No. 2 digital input No. 3 digital input No. 4 digital input No. 5 digital input No. 6 digital input No. 7 digital input No. 8 digital input

No. 1 digital output No. 2 digital output No. 3 digital output No. 4 digital output No. 5 digital output No. 6 digital output No. 7 digital output No. 8 digital output

Description

By default – not configured

Suction probe Supply probe

Description

Compressor 1 thermal Compressor 2 thermal Compressor 3 thermal Compressor 4 thermal Fan thermal common connection Fluid level Low pressure (suction) pressure-switch High pressure (supply) pressure-switch

Description

Compressor 1 Global alarm relay Compressor 2 Compressor 3 Compressor 4 Fan 1 Fan 2 Fan 3

Digital inputs

4 compressor thermals Fan thermal common connections Fluid level Low pressure pressure-switch High pressure pressure-switch

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

2.6.2 C-PRO GIGA RACK preset configurations (dual circuit compressor packs)

Analogue inputs

Suction probe C1 Supply probe C1 Suction probe C2 Supply probe C2

Digital outputs

2 Compressors C1 2 Compressors C2 1 compressor increment 2 Fans C1 2 Fans C2 1 global alarm relay

Digital inputs

4 compressor thermals Fan thermal common connection C1 Fan thermal common connection C2 Fluid level C1 Fluid level C2 Low pressure pressure-switch C1 Low pressure pressure-switch C2 High pressure pressure-switch C1 High pressure pressure-switch C2

Input/output configuration

Terminal Analogue input

AI 1 AI 2 AI 3 AI 4

Terminal Analogue output

Terminal Digital input

DI 1 DI 2 DI 3 DI 4 DI 5 DI 6 DI 7 DI 8 DI 9 DI 10 DI 11 DI 12

Terminal Digital output

DO 1 DO 2 DO 3 DO 4 DO 5 DO 6 DO 7 DO 8 DO 9 DO 10 DO 11 DO 12 DO 13

No. 1 analogue input (4..20 mA) No. 2 analogue input (4..20 mA) No. 3 analogue input (4..20 mA) No. 4 analogue input (4..20 mA)

No. 1 digital input No. 2 digital input No. 3 digital input No. 4 digital input No. 5 digital input No. 6 digital input No. 7 digital input No. 8 digital input No. 9 digital input No. 10 digital input No. 11 digital input No. 12 digital input

No. 1 digital output No. 2 digital output No. 3 digital output No. 4 digital output No. 5 digital output No. 6 digital output No. 7 digital output No. 8 digital output No. 9 digital output No. 10 digital output No. 11 digital output No. 12 digital output No. 13 digital output

By default – not configured

Description

Suction probe C1 Supply probe C1 Suction probe C2 Supply probe C2

Description

Compressor 1 thermal Compressor 2 thermal Compressor 3 thermal Compressor 4 thermal Fan thermal common connection C1 Fan thermal common connection C2 Fluid level C1 Fluid level C2 Low pressure (suction) pressure-switch C1 Low pressure (suction) pressure-switch C2 High pressure (supply) pressure-switch C1 High pressure (supply) pressure-switch C2

Description

Compressor 1 Increment 1 compressor 1 Compressor 2 Increment 1 compressor 2 Compressor 3 Increment 1 compressor 3 Compressor 4 Increment 1 compressor 4 Global alarm relay Fan 1 Fan 2 Fan 3 Fan 4

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

2.7 I/O expansion unit electrical connections

The layout relating to the expansion unit electrical connections is shown below, with tables listing the meanings of the inputs and outputs.

2.7.1 C-PRO EXP MEGA electrical connections

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

2.7.2 C-PRO EXP GIGA electrical connections

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

2.7.3 Input and output identification tables

Card with 12 VDC power supply

Abbre

Description

AI1 No.1 configurable analogue input (NTC, 0..20 mA, 4..20 mA) AI2 No.2 configurable analogue input (NTC, 0..20 mA, 4..20 mA) AI3 No.3 configurable analogue input (NTC, 0..20 mA, 4..20 mA) AI4 No.4 configurable analogue input (NTC, 0..20 mA, 4..20 mA)

DI1 No.1 digital input 12-24 VAC/DC DI2 No.2 digital input 12-24 VAC/DC DI3 No.3 digital input 12-24 VAC/DC DI4 No.4 digital input 12-24 VAC/DC

DI5 No.5 digital input 12-24 VAC/DC DI6 No.6 digital input 12-24 VAC/DC DI7 No.7 digital input 12-24 VAC/DC DI8 No.8 digital input 12-24 VAC/DC

PRG not used

Conn.

C1-1 VCC card power supply input (+13 V DC) C1-2 GND power supply reference

JD-1 VDC active probe power supply (*1) JD-2 JD-3 JD-4 JD-5 JD-6 GND analogue input common ground

JF-1 COM digital input common connection JF-2 JF-3 JF-4 JF-5 JF-6 COM digital input common connection

JG-1 COM digital input common connection JG-2 JG-3 JG-4 JG-5 JG-6 COM digital input common connection

YA-1 VDC power supply output connector (12 VDC) YA-2 CAN1+ connector for connecting the CAN serial port (CAN+) YA-3 CAN1- connector for connecting the CAN serial port (CAN-) YA-4 GND power supply output reference connector (ground)

JH-1 NC 1 relay No. 1 contact normally closed JH-2 COM 1 relay No. 1 common connection JH-3 NO 1 relay No. 1 contact normally open

JI-1 NC 2 relay No. 2 contact normally closed JI-2 COM 2 relay No. 2 common connection JI-3 NO 2 relay No. 2 contact normally open

JK-1 COM 3 relay No. 3 common connection JK-2 NO 3 relay No. 3 contact normally open JK-3 COM 4 relay No. 4 common connection JK-4 NO 4 relay No. 4 contact normally open JK-5 COM 5 relay No. 5 common connection JK-6 NO 5 relay No. 5 contact normally open

C2-1 VCC not used C2-2 GND not used

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

* VDC=12.5 V Imax = 200 mA (as the sum of the current values for all VDC terminals).

Card with 24 V AC/DC power supply

Conn.

CA-1 VCC card power supply input (24 VAC/DC) CA-2 VCC card power supply input (24 VAC/DC)

Abbre

Description

Other connectors (not present on the C-PRO EXP MEGA expansion unit)

Conn.

JN-1 NC 9 relay No. 9 contact normally closed JN-2 COM 9 relay No. 9 common connection JN-3 NO 9 relay No. 9 contact normally open

JO-1 NC 10 relay No. 10 contact normally closed JO-2 COM10 relay No. 10 common connection JO-3 NO 10 relay No. 10 contact normally open

JQ-1 JQ-2 DI10 No. 10 digital input 230 VAC JQ-3 CONHV digital input common connection 230 VAC

Abbre

DI9 No. 9 digital input 230 VAC

Description

Jumper and LED meanings

JMP3 CAN terminator

Jumper not inserted Jumper inserted

Termination (120?) not inserted Termination (120?) inserted

JMP4 Local CAN serial port baud rate selection

Jumper A inserted Jumper B inserted

Baud rate = 20K

B A

Jumper A inserted Jumper B not inserted Baud rate = 50K

B A

Jumper A not inserted Jumper B inserted

Baud rate = 125K

B A

Jumper A not inserted Jumper B not inserted Baud rate = 500K

PLEASE NOTE:

The C-PRO MEGA RACK and the C-PRO GIGA RACK are configured by default to be able to work with an expansion unit (with standard configuration) and with a user interface (with standard

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

configuration) by simply connecting the network components. For further information please refer to the chapter “CAN connection” in the Hardware Manual.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

3 COMPONENT NETWORK AND ACCESSORIES

3.1 Example

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

4 USER INTERFACE

4.1 Display and keypad

For the application there is an interface integrated with the controller (hereinafter referred to as “built-in”). It has a 4x20 character alphanumeric display, offer a range of keys for navigation/editing pages and several LEDs for viewing certain associated events.

The keypad has 6 page navigation and value editing keys with the following functions:

- UP and DOWN: alters the parameters in editing mode; otherwise, it is used for moving the

cursor

- LEFT and RIGHT: displays the screens in succession

- ENTER: confirms the value displayed in editing mode; otherwise, it runs any commands

associated with the text at the cursor point. If pressed for approx. 2 seconds while viewing an alarm page, it allows the alarm to be reset. If viewing the alarm pages, each press scrolls through the active alarms.

- ESC: cancels the present value if in editing mode; otherwise, it recalls any default page

associated with the current page. If the ESC key is pressed and held for approx. 2 seconds, it allows the machine to be switched on/off.

There are also an additional 3 function keys:

- K0 = ALL: enters the alarm pages if pressed and held for approx. 2 seconds. Pressing mutes

the buzzer.

- K1: not used

- K2: enters the application clock menu.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

There are also 3 LEDs:

- L0 associated with the K0 key, identifies whether there are any alarms.

Off: there are no alarms. Flashing slowly: indicates the presence of new alarms Flashing rapidly: indicates that alarm pages are being viewed. On: all active alarms have been viewed

- L2 associated with the K2 key, identifies the status of the RTC and the

time bands:

Off: no signals. Flashing rapidly: indicates there is an ERTC clock alarm. Flashing slowly: indicates that the compressor or fan setpoint is

changed within the time bands. On: indicates that the compressor and fan setpoint are both changed within the time bands.

- LEsc associated with the ESC key, identifies the status of the machine:

Off: machine off On: machine on Flashing slowly: machine switched off by digital input Flashing rapidly: machine switched off by supervisor system.

4.2 Page list

This section will introduce the application’s main pages and menus. As already mentioned, the main menu is subdivided into four levels: user, service, installer and system builder, plus a menu for managing the functions associated with the system clock and certain free-access pages. The menu structure is as follows:

⋅ Clock menu ⋅ General menu

⋅ User menu (Level 1, level 1 password) ⋅ Service menu (Level 2, level 2 password)

o Service menu – operations branch o Service menu – manual branch o Service menu - input/output branch

⋅ Installer menu (Level 3, level 3 password)

o Installer menu - settings branch o Installer menu – compressor branch o Installer menu fans branch o Installer menu - safety devices branch o Installer menu - miscellaneous branch

⋅ System builder menu (Level 4, level 4 password)

o System builder menu – systems branch (configuration wizards) o System builder menu – hardware branch o Installer menu – parameters branch

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Password

Each menu (besides the clock menu which is always accessible) is associated with a level which affects accessibility. Each level also has an associated password allowing access to the various functions present in that specific menu. Once the correct password has been entered, the protected functions will be accessible. Correctly entering a password has two effects:

⋅ it unlocks the associated level ⋅ it unlocks the sub-levels

Each level password may be altered from the level itself or from superior levels. For example, from the system builder level, all the passwords for the underlying levels will be modifiable by using the appropriate page. Here is an example from the system builder menu password page.

The range of permissible values for passwords is: -999 / 9999. If no actions are executed within the current page, then after 4 minutes, the inserted password expires, and it is necessary to insert it once more.

Clock menu

This menu contains the functions associated with the system RTC:

⋅ setting the clock ⋅ enabling the compressor/fan time bands ⋅ setting the time bands ⋅ setting the offsets to the main setpoints for each time band

This menu is not password-protected, and may be accessed by pressing the K2 key on the user interface for approx. 2 seconds.

Status pages

There are pages that are not password-protected and may accessed and browsed by simply using the LEFT and RIGHT keys. These pages display the status of the circuits, compressors, inverters, probes, the power supplied and requested, and other general information. These pages cannot be edited.

When the machine is on and running, the main page is the following:

from which it is possible to access the status pages for the individual circuits, by pressing ENTER at the “>” for the corresponding circuit, or by navigating using the LEFT and RIGHT keys, it is possible to view the status of the compressors, fans and inverters.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Stato circuito

Funzioni attive su circuito

Set Point e V

alore delle sonde di pressione

The first page for each circuit:

contains information on the circuit’s current status and active functions:

hp: tC: dC: sC: tF dF: sF:

refrigeration power increments Compressor time band function Compressor set point variation from a digital input Compressor set point variation by supervisor system Fan time band function Fan set point variation from a digital input Fan set point variation by supervisor system

The function is active if the relevant code is visible on the page.

General menu

The general menu has no level, and is the access point for all other system menus.

It is possible to view this menu, from any point within the user interface, by pressing and holding the ENTER key for approx. 2 seconds. From this page, it is possible to select into which menu to move by moving the “screen highlight” above the indicators “>>>” and pressing the ENTER key for conformation. Pressing the ESC key within this menu returns to the default start page if the machine is on, or the OFF page if the machine is switched off.

User menu The user menu is a level 1 menu, i.e. it is necessary to insert the user level password, or higher, in order to be able to view/modify the parameters in this branch.

It is possible to select which circuit to access in order to modify the setpoints and the secondary setpoint offset, or to set several general configuration parameters in the “Miscellaneous” section.

Within this page, as may be seen from the figure, a “v” character is displayed in the top right of the screen. This is not an error, but a sign to indicate to the user that the page information continues, i.e. pressing the DOWN (or UP depending on where the screen highlight is) key moves to the content

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

not yet visible on the page itself. In this specific case, once the screen highlight is on the third circuit line, pressing DOWN moves the display to the next screen:

Service menu The user menu is a level 2 menu, i.e. it is necessary to insert the service level password, or higher, in order to be able to view/modify the parameters in this branch.

In this menu, it is possible to view the status of the various devices, inputs and outputs used by the application.

Entering the OPERATION menu displays/enables features relating to compressor and fan operation. For example, the operation times, the status of the relevant alarms and the maximum acceptable time threshold.

In the MANUAL menu, it is possible to manually/automatically set the compressors and fans and whether outputs can be forced in order to test functionality

In the I/O STATUS menu it is possible to view all the properties involved with the application inputs and outputs:

⋅ digital input/output status ⋅ analogue output status ⋅ probe calibration…

Installer menu

The installer menu is a level 3 menu, i.e. it is necessary to insert the installer or system builder password in order to be able to view/modify the parameters in this branch.

The installer menu contains all the parameters pertaining to the configuration of all the machine functions (alarms, settings, logic, type of rotation,…).

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

In the REGULATION menu it is possible to set/view the parameters relating to the side band and neutral zone thermoregulations for compressors, fans and any inverters, for each circuit:

⋅ type of regulation ⋅ setpoints ⋅ differentials ⋅ times ⋅ offsets

In the COMPRESSORS and FANS menu it is possible to set the parameters pertaining to device management:

⋅ power of the individual compressors (if used) ⋅ type of rotation ⋅ increment logic ⋅ times ⋅ floating condensation parameters ⋅ high pressure pressure-switch alarm prevention parameters

The SAFETY DEVICES menu contains all the parameters pertaining to the alarms and management of the safety devices for the compressors and fans

⋅ enabling ⋅ signal delays ⋅ reset type…

The MISCELLANEOUS menu contains other general parameters:

⋅ full-scale values for the transducers ⋅ Modbus communication ⋅ activations On/Off. ⋅ temperature probe activation ⋅ digital input and supervisor system secondary setpoint activation ⋅ analogue input type ⋅ refrigerant gas (when using temperature probes) ⋅ suction line compensation ⋅ password

From the DEFAULTS menu it is possible to restore the default values for all the application parameters. This menu is only accessible with the machine switched off.

System builder menu

The system builder menu is a level 4 menu, i.e. it is necessary to insert the system builder level password in order to be able to view/modify the parameters in this branch. Furthermore, this menu is only accessible with the machine switched off.

This menu contains all the machine configuration parameters that decide the mode of operation and which functions to activate, or restrict, depending on the system builder’s needs.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

The SYSTEM menu contains a system configuration “Wizard” for configuring a number of circuits, activating unique condensation, the use of inverters, the number of compressors and increments, the number of fans, the number of safety devices to be used and the use of any expansion units. A page summarising the relays and selected digital inputs is presented for configuration purposes, indicating whether an expansion unit should be used, if selected.

The HARDWARE menu contains all the parameters for setting the positions to which the various devices are connected.

⋅ Compressor digital output position ⋅ Fan digital output position ⋅ Alarm digital input/output position

Such characteristics are collected in a separate submenu in order to distinguish compressors, fans and safety devices.

Setting the positions of the various alarm inputs also enables their operation. Indeed, an alarm is only enabled if the parameter, identifying its physical position on the terminal, is set and is other than zero. If it is desired not to use an alarm, simply leave the corresponding parameter at the value zero. The same management is used to manage the four alarm relays. If the position parameters are equal to zero, then the relays are disabled.

The PARAMETERS menu contains other machine configuration parameters:

⋅ type of control unit (only for viewing on the pages) ⋅ home page ⋅ passwords for all four levels

Firmware version Keep pressed the UP+DOWN buttons for 2 seconds and enter in to the section info page.

Proj

(Project)

No. 291 No. 1008 Version 4 Version 7 Release 0 Release 0

Firmware

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

4.3 Conditioned visibility

Conditioned visibility allows hiding certain parameters and status information on the basis of the configuration of certain parameters. For example, by setting neutral zone type regulation, the side band regulation parameters will be automatically hidden when viewing the pages, or, even more importantly, by setting a single circuit machine, all the parameters for the second and third circuit will no longer be visible. At the user interface level, all the parameters and status information that is not of interest will be replaced by dots “….” On the 4 x 20 character alphanumeric display, and will not be editable. This feature makes configuration, maintenance and use of the machine simpler. During configuration, once the system type and characteristics are selected, the unused parameters will no longer be accessible. During maintenance, it will be possible to test the functions of the devices effectively configured in the system. During normal use, the number of parameters and the status information to be displayed by means of the user interface is significantly less than the total that can be configured; this all makes the user interface more legible, speeds up setting or finding the correct parameter, and above all prevents the user from setting parameters that might cause malfunctions. The configuration parameter table shows the parameters subject to conditioned visibility, along with the conditions deciding their exclusion.

Page

Code

PT00

PT01..04

PT11..14

PT21..24

PT31..34

PT50

PT51..54

PT61..64

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

5 CONFIGURATION PARAMETERS

All the parameters managed by the application are listed below. For each parameter there is also a brief description, the range of values admissible, the units of measurement, the recommended default value and the menu in which it may be found. The menus are structured according to the following logic:

⋅ OR : clock menu ⋅ UT : user menu ⋅ MA: service menu

o MA-F: service menu – operations branch o MA-M: service menu – manual branch o MA-IO: service menu - input/output branch

⋅ IS : installer menu

o IS-RC: installer menu – compressor settings branch o IS-RF: installer menu – fan settings branch o IS-C: installer menu – compressor branch o IS-F: installer menu - fans branch o IS-S: installer menu - safety devices branch o IS-V: installer menu - miscellaneous branch

⋅ CO : system builder menu

o CO-W: system builder menu – systems branch (configuration wizards) o CO-Hw: system builder menu – hardware branch o CO-Pa: installer menu – parameters branch

Parameters table

Parameter

Enable compressor time bands Comp. time band (1..4)

Compressor time band offset (1..4) Circuit 1

Compressor time band offset (1..4) Circuit 2

Compressor time band offset (1..4) Circuit 3

Enable fan time bands Fan time band (1..4) Fan time band offset (1..4)

Enables compressor time band management

Sets the four compressor time bands Sets the offsets to the compressor setpoints in relation to the 4 time bands. Circuit 1 Sets the offsets to the compressor setpoints in relation to the 4 time bands. Circuit 2 Sets the offsets to the compressor setpoints in relation to the 4 time bands. Circuit 3 Enables fan time band management

Sets the four fan time bands Sets the offsets to the fan

setpoints in relation to the 4

Description

CLOCK MENU PARAMETERS – Time band management

Default

0.0 PC12

0.0 PC32

0.0 PC52

0.0 PF12

Min

NO (0) YES (1)

Max

PC13

PC33

PC53

PF13

Bar

Visible if PG01 > 1

Visible if PG01 > 2

Notes

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

PT71..74

PT81..84

SPC1

PUC1

PUC4

SPC2

PUC2

PUC5

SPC3

PUC3

PUC6

SPF1

PUF1

PUF4

SPF2

Circuit 1 Fan time band offset (1..4) Circuit 2 Fan time band offset (1..4) Circuit 3

Compressor setpoint Circuit 1 Comp. DI secondary setpoint offset Circuit 1 Comp. sup. Secondary setpoint offset Circuit 1 Compressor setpoint Circuit 2 Comp. DI secondary setpoint offset Circuit 2 Comp. sup. Secondary setpoint offset Circuit 2 Compressor setpoint Circuit 3 Comp. DI secondary setpoint offset Circuit 3 Comp. sup. Secondary setpoint offset Circuit 3 Fan setpoint Circuit 1 Fan secondary setpoint offset Circuit 1 Fan sup. secondary setpoint offset Circuit 1

Fan setpoint Circuit 2

time bands. Circuit 1 Sets the offsets to the fan setpoints in relation to the 4 time bands. Circuit 2 Sets the offsets to the fan setpoints in relation to the 4 time bands. Circuit 3

Sets the setpoint value for the compressor suction probe

Sets the offset value for use of secondary setpoint from the compressor digital input

Sets the offset value for use of secondary setpoint from compressor supervisor

Sets the setpoint value for the compressor suction probe

Sets the offset value for use of secondary setpoint from the compressor digital input

Sets the offset value for use of secondary setpoint from compressor supervisor

Sets the setpoint value for the compressor suction probe

Sets the offset value for use of secondary setpoint from the compressor digital input

Sets the offset value for use of secondary setpoint from compressor supervisor

Sets the setpoint value for the fan supply probe Sets the offset value for use of secondary setpoint from fan digital input

Sets the offset value for use of secondary setpoint from fan supervisor

Sets the setpoint value for the fan supply probe

USER MENU PARAMETERS

0.0 PF32

0.0 PF52

1.0 PC12

0.0 -20.0 20.0 Bar

1.0 PC32

0.0 -20.0 20.0 Bar

1.0 PC52

0.0 -20.0 20.0 Bar

15.0 PF12

0.0 -20.0 20.0 Bar

15.0 PF32

PF33

PF53

PC13

PC33

PC53

PF13

PF33

Visible if PG01

Bar

> 1 and PG30 = 0 Visible if PG01

Bar

> 2 and PG30 = 0

Bar

Visible if PG01 > 1

Visible if PG01 > 2

Visible if PG01 > 1 and PG30 = 0

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PUF2

PUF5

SPF3

PUF3

PUF6

PSd1

PM00

PM01..10

PM31 PM32

PM40

PM41..50 PM71

PM72

PM90

PSd2

PM11..20

Fan secondary setpoint offset Circuit 2 Fan sup. secondary setpoint offset Circuit 2

Fan setpoint Circuit 3

Fan secondary setpoint offset Circuit 3 Fan sup. secondary setpoint offset Circuit 3 User PSd

Compressor operational time alarm threshold

Compressor operation time (1..10)

Compressor operation time (11-12)

Fan operational time alarm threshold

Fan operation time (1..10)

Fan operation time (11-12)

Last maintenance date

Service PSd

Enable compressor (1..10)

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Sets the offset value for use of secondary setpoint from fan digital input

Sets the offset value for use of secondary setpoint from fan supervisor

Sets the setpoint value for the fan supply probe

Sets the offset value for use of secondary setpoint from fan digital input

Sets the offset value for use of secondary setpoint from fan supervisor

User level password

Sets the maximum compressor operation time limit. Beyond this limit, the relevant alarm will be tripped

Operation times for each compressor

Sets the maximum fan operation time limit. Beyond this limit, the relevant alarm will be tripped

Operation times for each fan

Operation times for each fan Sets the last date on which

system maintenance was carried out Service level password Enables manual/automatic operation of each compressor: M: manual A: normal operation

SERVICE MENU PARAMETERS

0.0 -20.0 20.0 Bar

15.0 PF52

0.0 -20.0 20.0 Bar

0 -999 9999 UT

20000 0 500000

0 0 500000

20000 0 500000

0 0 500000

MA-F

0 -999 9999 MA-F

A (0)

PF53

M (1)

Bar

Hou

MA-F

MA-M

Visible if PG01 > 1 and PG30 = 0

Visible if PG01 > 2 and PG30 = 0 Visible if PG01 > 2 and PG30 = 0

Visible if PG01 > 2 and PG30 = 0

Compressors 1 to 10;

Visibility Compressors 11 and 12; Visibility

Fans 1 to 10; Visibility Fans 11 and 12; Visibility

Compressors 1 to 10; Visibility

*¹

*² *²

Page

PM21..30

PM33 PM34

PM35 PM36

PM37

PM38

PM39

PM51..60

PM61..70

PM73 PM74

PM75 PM76

PM77

PM78

PM79

PM81

PM82

Compressor forcing (1..10)

Enable compressor (11-12)

Compressor forcing (11-12)

Comp. inverter forcing Circuit 1

Comp. inverter forcing Circuit 2

Comp. inverter forcing Circuit 3

Enable fan (1..10)

Fan forcing (1..10)

Enable fan (11-12)

Fan forcing (11-12)

Circuit 1 inverter fan forcing

Circuit 2 inverter fan forcing

Circuit 3 inverter fan forcing

Suction probe 1 calibration Suction probe 2 calibration

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

In manual operation, this sets the number of forced compressor steps

Enables manual/automatic operation of each compressor: M: manual A: normal operation

In manual operation, this sets the number of forced compressor steps

In manual operation, this forces the compressor with the circuit 1 inverter In manual operation, this forces the compressor with the circuit 2 inverter In manual operation, this forces the compressor with the circuit 3 inverter Enables manual/automatic operation of each fan: M: manual A: normal operation In manual operation, this forces the fans to be switched on and off: S: fan off A: fan on Enables manual/automatic operation of each fan: M: manual A: normal operation In manual operation, this forces the fans to be switched on and off: S: fan off A: fan on In manual operation, this forces the fan with the circuit 1 inverter In manual operation, this forces the fan with the circuit 2 inverter In manual operation, this forces the fan with the circuit 3 inverter Circuit 1 suction probe calibration Circuit 2 suction probe calibration

0 0 4 MA-M

0 0 100.0 % MA-M

0.0 -9.9 9.9 Bar MA-IO

A (0)

S (0)

A (0)

S (0)

M (1)

A (1)

M (1)

A (1)

MA-M

Compressors 1 to 10; Visibility

*¹

Compressors 11 and 12;

Visibility

Compressors 11 and 12;

Visibility

Fans 1 to 10; Visibility

Fans 11 and 12; Visibility

Visible if PG01 > 1

*¹

*²

Page

PM83

PM84

PM85

PM86

PM87

PM88

PC12

PC13

PC14

PC16

PC17

PC18

PC19

PC20

PC21

PC22

PC23

PC24

PC25

Suction probe 3 calibration Supply probe 1 calibration

Supply probe 2 calibration

Supply probe 3 calibration

Environment temperature probe calibration External temperature probe calibration

Compressor min. setpoint Circuit 1 Compressor max. setpoint Circuit 1 Compressor regulation Circuit 1 Compressor integral time Circuit 1 Compressor proportional band. Circuit 1

Comp. zone Circuit 1

Comp. zone differential Circuit 1

Compressor TOnMin Circuit 1 Compressor TOnMax Circuit 1 Compressor TOffMin Circuit 1 Compressor TOffMax Circuit 1 Comp. inverter diff. Circuit 1 Compressor inverter SP

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Circuit 3 suction probe calibration Circuit 1 supply probe calibration

Circuit 2 supply probe calibration

Circuit 3 supply probe calibration

Calibration of the environment temperature probe

Calibration of the external temperature probe

Minimum suction setpoint value pertaining to the compressors of circuit 1 Maximum suction setpoint value pertaining to the compressors of circuit 1 Sets the type of regulation for controlling the circuit 1 compressors Integral time Ti for side band regulation of circuit 1 compressors Proportional band Bp for side band regulation of circuit 1 compressors Zone value for neutral zone regulation of circuit 1 compressors Differential, for neutral zone regulation, within which the calculation for the insertion/release time of the subsequent step varies. Circuit 1 Minimum insertion time for subsequent compressor step ( circuit 1 neutral zone reg.) Maximum insertion time for subsequent compressor step ( circuit 1 neutral zone reg.) Minimum release time for subsequent compressor step ( circuit 1 neutral zone reg.) Maximum release time for subsequent compressor step ( circuit 1 neutral zone reg.) Differential for compressor regulation with circuit 1 inverter Suction setpoint offset for circuit 1 inverter regulation

INSTALLER MENU PARAMETERS

0.0 -9.9 9.9 Bar MA-IO

0.1 PH01

2.5 SPC1

Neutral

Zone (1)

600 0 999 Sec IS-RC

0.5 0 20.0 Bar IS-RC

20 0 PC21

Side

Band (0)

SPC1

PH02

Neutral

Zone (1)

Bar IS-RC

IS-RC

Sec IS-RC

60 PC20

999 Sec IS-RC

10 0 PC23

Sec IS-RC

60 PC22

999 Sec IS-RC

0.5 0.0 20.0 Bar IS-RC

0.0 -20.0 20.0 Bar IS-RC

Visible if PG01 > 2

Visible if PG01 > 1 and PG30 = 0 Visible if PG01 > 2 and PG30 = 0

Visible if PC14 = 0

Visible if PC14 = 1

Visible if PG12 = 1

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

PC26

PC27

PC28

PC32

PC33

PC34

PC36

PC37

PC38

PC39

PC40

PC41

PC42

PC43

PC44

PC45

PC46

PC47

PC48

offset. Circuit 1 Inverter comp. min. Circuit 1 Inverter comp. speedup Circuit 1

Inverter compressor time Circuit 1

Compressor min. setpoint Circuit 2 Compressor max. setpoint Circuit 2 Compressor regulation Circuit 2 Compressor integral time Circuit 2 Compressor proportional band. Circuit 2

Comp. zone Circuit 2

Comp. zone differential Circuit 2

Compressor TOnMin Circuit 2 Compressor TOnMax Circuit 2 Compressor TOffMin Circuit 2 Compressor TOffMax Circuit 2 Comp. inverter diff. Circuit 2 Compressor inverter SP offset. Circuit 2

Inverter comp. min. Circuit 2

Inverter comp. speedup Circuit 2 Inverter compressor time

of the compressor. Minimum compressor value with circuit 1 inverter

Compressor speedup time with circuit 1 inverter

Inverter ramp. Time taken for the inverter to go from the minimum value to the maximum value ( circuit 1 neutral zone reg.) Minimum suction setpoint value pertaining to the compressors of circuit 2 Maximum suction setpoint value pertaining to the compressors of circuit 2 Sets the type of regulation for controlling the circuit 2 compressors Integral time Ti for side band regulation of circuit 2 compressors Proportional band Bp for side band regulation of circuit 2 compressors Zone value for neutral zone regulation of circuit 2 compressors Differential, for neutral zone regulation, within which the calculation for the insertion/release time of the subsequent step varies. Circuit 2 Minimum insertion time for subsequent compressor step ( circuit 2 neutral zone reg.) Maximum insertion time for subsequent compressor step ( circuit 2 neutral zone reg.) Minimum release time for subsequent compressor step ( circuit 2 neutral zone reg.) Maximum release time for subsequent compressor step ( circuit 2 neutral zone reg.) Differential for compressor regulation with circuit 2 inverter Suction setpoint offset for circuit 2 inverter regulation of the compressor.

Minimum compressor value with circuit 2 inverter

Compressor speedup time with circuit 2 inverter

Inverter ramp. Time taken for the inverter to go from

0.0 0.0 100.0 % IS-RC

0 0 999 Sec IS-RC

10 0 999 Sec IS-RC

Visible if PG12 = 1

0.1 PH01

SPC2

Bar IS-RC

2.5 SPC2

PH02

Bar IS-RC

Neutral

Zone (1)

600 0 999 Sec IS-RC

Side

Band (0)

Neutral

Zone (1)

IS-RC

0.5 0 20.0 Bar IS-RC

20 0 PC41

Sec IS-RC

60 PC40

999 Sec IS-RC

10 0 PC43

Sec IS-RC

60 PC42

999 Sec IS-RC

0.5 0.0 20.0 Bar IS-RC

0.0 -20.0 20.0 Bar IS-RC

0.0 0.0 100.0 % IS-RC

0 0 999 Sec IS-RC

10 0 999 Sec IS-RC

Visible if PG01 > 1

Visible if PG01 > 1 and PG34 = 0 Visible if PG01 > 1 and PG34 = 0 Visible if PG01 > 1 and PG34 = 1

Visible if PG01 > 1 and PG34 = 1

Visible if PG01 > 1 and PG34 = 1 Visible if PG01 > 1 and PG34 = 1 Visible if PG01 > 1 and PG34 = 1 Visible if PG01 > 1 and PG34 = 1 Visible if PG01 > 1 and PG16 = 1 Visible if PG01 > 1 and PG16 = 1 Visible if PG01 > 1 and PG16 = 1 Visible if PG01 > 1 and PG16 = 1 Visible if PG01 > 1 and PG16 =

Page

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

PC52

PC53

PC54

PC56

PC57

PC58

PC59

Circuit 2

Compressor min. setpoint Circuit 3 Compressor max. setpoint Circuit 3 Compressor regulation Circuit 3 Compressor integral time Circuit 3 Compressor proportional band. Circuit 3

Comp. zone Circuit 3

Comp. zone differential Circuit 3

the minimum value to the maximum value ( circuit 2 neutral zone reg.) Minimum suction setpoint value pertaining to the compressors of circuit 3 Maximum suction setpoint value pertaining to the compressors of circuit 3 Sets the type of regulation for controlling the circuit 3 compressors Integral time Ti for side band regulation of circuit 3 compressors Proportional band Bp for side band regulation of circuit 3 compressors Zone value for neutral zone regulation of circuit 3 compressors Differential, for neutral zone regulation, within which the calculation for the insertion/release time of the subsequent step varies. Circuit 3

0.1 PH01

SPC3

Bar IS-RC

2.5 SPC3

PH02

Bar IS-RC

Neutral

Zone (1)

600 0 999 Sec IS-RC

0.5 0 20.0 Bar IS-RC

Side

Band (0)

Neutral

Zone (1)

IS-RC

0.5 0 20.0 Bar IS-RC

Visible if PG01 > 2

Visible if PG01 > 2 and PC54 = 0 Visible if PG01 > 2 and PC54 = 0 Visible if PG01 > 2 and PC54 = 1

Visible if PG01 > 2 and PC54 = 1

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PC60

PC61

PC62

PC63

PC64

PC65

PC66

PC67

PC68

PC01

PC02

PC03

Compressor TOnMin Circuit 3 Compressor TOnMax Circuit 3 Compressor TOffMin Circuit 3 Compressor TOffMax Circuit 3 Comp. inverter diff. Circuit 3 Compressor inverter SP offset. Circuit 3

Inverter comp. min. Circuit 3

Inverter comp. speedup Circuit 3

Inverter compressor time Circuit 3

Compressor rotation

Increment trigger

Increment logic

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Minimum insertion time for subsequent compressor step ( circuit 3 neutral zone reg.) Maximum insertion time for subsequent compressor step ( circuit 3 neutral zone reg.) Minimum release time for subsequent compressor step ( circuit 3 neutral zone reg.) Maximum release time for subsequent compressor step ( circuit 3 neutral zone reg.) Differential for compressor regulation with circuit 3 inverter Suction setpoint offset for circuit 3 inverter regulation of the compressor.

Minimum compressor value with circuit 3 inverter

Compressor speedup time with circuit 3 inverter

Inverter ramp. Time taken for the inverter to go from the minimum value to the maximum value ( circuit 3 neutral zone reg.) Type of rotation used for compressor management: 0: FIFO 1: LIFO 2: FIFO+HR 3: LIFO+HR Sets the increment trigger mode: 0: CpCp_pCpC 1: CCpp_ppCC 2: CpCp_ppCC 3: CCpp_pCpC Sets the relay logic used for the compressor increments: 0: NC = normally closed (e.g. Copeland) 1: NO = normally open (e.g. Feeders)

20 0 PC61

60 PC60

999 Sec IS-RC

10 0 PC63

60 PC62

999 Sec IS-RC

0.5 0.0 20.0 Bar IS-RC

0.0 -20.0 20.0 Bar IS-RC

0.0 0.0 100.0 % IS-RC

0 0 999 Sec IS-RC

10 0 999 Sec IS-RC

FIFO

CpCp_pCpC

FIFO (0)

CpCp_pCpC

(0)

NC (0)

LIFO +

HR (3)

CCpp_pCpC

(3)

NO (1)

Sec IS-RC

IS-C

Visible if PG01 > 2 and PC54 = 1 Visible if PG01 > 2 and PC54 = 1 Visible if PG01 > 2 and PC54 = 1 Visible if PG01 > 2 and PC54 = 1 Visible if PG01 > 2 and PG22 = 1 Visible if PG01 > 2 and PG22 = 1 Visible if PG01 > 2 and PG22 = 1 Visible if PG01 > 2 and PG22 = 1

Visible if PG01 > 2 and PG22 = 1

Page

PC04

PC05

PC06

PC07

PC08

PC09

PC10

PC11

PC31

PC51

PC69

PC70

PC71

PC72

TMinOn

TMinOff

TOnOn

TOnOther

TOffOther

TOnParz

TOffParz

Comp. probe error Circuit 1

Comp. probe error Circuit 2

Comp. probe error Circuit 3

TRestart

Enable HP prevention

HP prevention C1 limit SP HP prevention C2 limit SP

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Minimum time for which the compressor must remain on, even if switching off requested Minimum time for which the compressor must remain off, even if switching on requested Minimum time that must elapse before the same compressor can be switched on. Minimum time that must elapse before another compressor can be switched on Minimum time that must elapse before another compressor can be switched off Minimum time between switching on of increments Minimum time between switching off of increments Number of compressors that will be forced if an alarm occurs on the circuit 1 suction probe Number of compressors that will be forced if an alarm occurs on the circuit 2 suction probe Number of compressors that will be forced if an alarm occurs on the circuit 3 suction probe Minimum compressor switch on wait time following a system reset/black-out Enable compressor increments at high pressure 0: NO 1: YES Set compressor increment pressure (circuit 1) Set compressor increment pressure (circuit 2)

10 0 999 Sec IS-C

120 0 999 Sec IS-C

360 0 999 Sec IS-C

20 0 999 Sec IS-C

1 0 PG11

1 0 PG15

1 0 PG21

0 0 999 Sec IS-C

0 (NO)

22.0 PH03

1 (SI)

PH04

Bar IS-C

IS-C

Visible if PG01 > 1

Visible if PG01 > 2

Visible if PG01 > 1

Page

PC73

PC74

PC75

PC76

PC78

PC81

PC82

PC83

PC84

PC85

PC86

PC87

PC88

PC89

PC90

PC91

PC92

PF12

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

HP prevention C3 limit SP HP prevention differential HP prevention hold time HP prevention percentage Side band step overlap

Comp. 1 power Compressor 1 power output

Comp. 2 power Compressor 2 power output

Comp. 3 power Compressor 3 power output

Comp. 4 power Compressor 4 power output

Comp. 5 power Compressor 5 power output

Comp. 6 power Compressor 6 power output

Comp. 7 power Compressor 7 power output

Comp. 8 power Compressor 8 power output

Comp. 9 power Compressor 9 power output

Comp 10 power

Comp 11 power

Comp. 12 power

Fan min. setpoint Circuit 1

Set compressor increment pressure (circuit 3) Comp. increment pressure differential Minimum comp. increment hold time

Increment percentage Compressor side band step

overlap factor

Compressor 10 power output

Compressor 11 power output

Compressor 12 power output

Minimum supply setpoint value pertaining to the circuit 1 fans

22.0 PH03

4.0 0.1 10.0 Bar IS-C

0 0 999 Min IS-C

50 0 100 % IS-C

0 0 100 % IS-C

1 0 5000 kW IS-C

1.0 PH03

PH04

Bar IS-C

SPF1

Bar IS-RF

Visible if PG01 > 2

Visible if PG03 = 1;

Visibility Visible if PG03 = 1; Visibility Visible if PG03

= 1; Visibility Visible if PG03

= 1; Visibility

*¹

Page

PF13

PF14

PF16

PF17

PF18

PF20

PF24

PF25

PF26

PF27

PF28

PF32

PF33

PF34

PF36

PF37

Fan max, setpoint Circuit 1

Fan regulation Circuit 1

Fan integral time Circuit 1

Fan proportional band. Circuit 1

Fan zone Circuit 1

Fan TOn/TOff Circuit 1

Fan inverter differential Circuit 1 Fan inverter SP offset. Circuit 1 Fan inverter minimum Circuit 1 Fan inverter speedup Circuit 1

Fan inverter time Circuit 1

Fan min. setpoint Circuit 2

Fan max, setpoint Circuit 2

Fan regulation Circuit 2

Fan integral time Circuit 2

Fan proportional band. Circuit 2

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Maximum supply setpoint value pertaining to the circuit 1 fans Sets the type of regulation for controlling the circuit 1 fans Integral time Ti for side band regulation of circuit 1 fans Proportional band Bp for side band regulation of circuit 1 fans Zone value for neutral zone regulation of circuit 1 fans Next fan insertion/release time ( circuit 1 neutral zone reg.) Differential for fan regulation with circuit 1 inverter Suction setpoint offset for circuit 1 inverter regulation of the fan.

Minimum fan value with circuit 1 inverter

Fan speedup time with circuit 1 inverter

Inverter ramp. Time taken for the inverter to go from the minimum value to the maximum value ( circuit 1 neutral zone reg.) Minimum supply setpoint value pertaining to the circuit 2 fans Maximum supply setpoint value pertaining to the circuit 2 fans Sets the type of regulation for controlling the circuit 2 fans

Integral time Ti for side band regulation of circuit 2 fans

Proportional band Bp for side band regulation of circuit 2 fans

25.0 SPF1

Side

Band (0)

600 0 999 Sec IS-RF

0.5 0 20.0 Bar IS-RF

1.0 0 20.0 Bar IS-RF

10 0 999 Sec IS-RF

0.5 0.0 20.0 Bar IS-RF

0.0 -20.0 20.0 Bar IS-RF

0.0 0.0 100.0 % IS-RF

2 0 999 Sec IS-RF

10 0 999 Sec IS-RF

1.0 PH03

25.0 SPF2

Side

600 0 999 Sec IS-RF

0.5 0 20.0 Bar IS-RF

Side

Band (0)

Side

Band (0)

PH04

Neutral

Zone (1)

SPF2

PH04

Neutral

Zone (1)

Bar IS-RF

IS-RF

Bar IS-RF

IS-RF

Visible if PF14 = 0

Visible if PF14 = 1

Visible if PG42 = 1

Visible if PG01 > 1 and PG30 = 0 Visible if PG01 > 1 and PG30 = 0 Visible if PG01 > 1 and PG30 = 0 Visible if PG01 > 1 and PG30 = 0 and PF34 = 0 Visible if PG01 > 1 and PG30 = 0 and PF34 = 0

Page

PF38

PF40

PF44

PF45

PF46

PF47

PF48

PF52

PF53

PF54

PF56

PF57

PF58

PF60

Fan zone Circuit 2

Fan TOn/TOff Circuit 2

Fan inverter differential Circuit 2

Fan inverter SP offset. Circuit 2

Fan inverter minimum Circuit 2

Fan inverter speedup Circuit 2

Fan inverter time Circuit 2

Fan min. setpoint Circuit 3

Fan max, setpoint Circuit 3

Fan regulation Circuit 3

Fan integral time Circuit 3

Fan proportional band. Circuit 3

Fan zone Circuit 3

Fan TOn/TOff Circuit 3

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Zone value for neutral zone regulation of circuit 2 fans

Next fan insertion/release time ( circuit 2 neutral zone reg.)

Differential for fan regulation with circuit 2 inverter

Suction setpoint offset for circuit 2 inverter regulation of the fan.

Minimum fan value with circuit 2 inverter

Fan speedup time with circuit 2 inverter

Inverter ramp. Time taken for the inverter to go from the minimum value to the maximum value ( circuit 2 neutral zone reg.) Minimum supply setpoint value pertaining to the circuit 3 fans Maximum supply setpoint value pertaining to the circuit 3 fans Sets the type of regulation for controlling the circuit 3 fans

Integral time Ti for side band regulation of circuit 3 fans

Proportional band Bp for side band regulation of circuit 3 fans

Zone value for neutral zone regulation of circuit 3 fans

Next fan insertion/release time ( circuit 3 neutral zone reg.)

1.0 0 20.0 Bar IS-RF

10 0 999 Sec IS-RF

0.5 0.0 20.0 Bar IS-RF

0.0 -20.0 20.0 Bar IS-RF

0.0 0.0 100.0 % IS-RF

2 0 999 Sec IS-RF

10 0 999 Sec IS-RF

1.0 PH03

25.0 SPF3

Side

Band (0)

600 0 999 Sec IS-RF

0.5 0 20.0 Bar IS-RF

1.0 0 20.0 Bar IS-RF

10 0 999 Sec IS-RF

Side

Band (0)

SPF3

PH04

Neutral

Zone (1)

Bar IS-RF

IS-RF

Visible if PG01 > 1 and PG30 = 0 and PF34 = 1 Visible if PG01 > 1 and PG30 = 0 and PF34 = 1 Visible if PG01 > 1 and PG30 = 0 and PG46 = 1 Visible if PG01 > 1 and PG30 = 0 and PG46 = 1 Visible if PG01 > 1 and PG30 = 0 and PG46 = 1 Visible if PG01 > 1 and PG30 = 0 and PG46 = 1

Visible if PG01 > 1 and PG30 = 0 and PG46 = 1

Visible if PG01 > 2 and PG30 = 0 Visible if PG01 > 2 and PG30 = 0 Visible if PG01 > 2 and PG30 = 0 Visible if PG01 > 2 and PG30 = 0 and PF54 = 0 Visible if PG01 > 2 and PG30 = 0 and PF54 = 0 Visible if PG01 > 2 and PG30 = 0 and PF54 = 1 Visible if PG01 > 2 and PG30 = 0 and PF54 = 1

Page

PF64

PF65

PF66

PF67

PF68

PF01

PF02

PF07

PF08

PF11

PF31

PF51

PF71

Fan inverter minimum Circuit 3

Fan inverter SP offset. Circuit 3

Fan inverter minimum Circuit 3

Fan inverter speedup Circuit 3

Fan inverter time Circuit 3

Fan rotation

Enable compressor regulation

TOnOther

TOffOther

Fan probe error Circuit 1

Fan probe error Circuit 2

Fan probe error Circuit 3

Enable floating condensation

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Differential for fan regulation with circuit 3 inverter

Suction setpoint offset for circuit 3 inverter regulation of the fan.

Minimum fan value with circuit 3 inverter

Fan speedup time with circuit 3 inverter

Inverter ramp. Time taken for the inverter to go from the minimum value to the maximum value ( circuit 3 neutral zone reg.) Type of rotation used for fan management: 0: FIFO 1: LIFO 2: FIFO + time 3: LIFO + time If enabled, allows selection of fan regulation, only if at least one compressor is on Minimum time that must elapse before another fan can be switched on Minimum time that must elapse before another fan can be switched off Number of fans that will be forced if an alarm occurs on the circuit 1 supply probe Number of fans that will be forced if an alarm occurs on the circuit 2 supply probe Number of fans that will be forced if an alarm occurs on the circuit 3 supply probe Enables floating condensation for fan management

0.5 0.0 20.0 Bar IS-RF

0.0 -20.0 20.0 Bar IS-RF

0.0 0.0 100.0 % IS-RF

2 0 999 Sec IS-RF

10 0 999 Sec IS-RF

LIFO

FIFO

FIFO (0)

NO (0) YES (1)

2 0 999 Sec

1 0 PG41

1 0 PG45

1 0 PG51

NO (0) YES (1)

+ time

(3)

Visible if PG01 > 2 and PG30 = 0 and

IS-F

PG52 = 1 Visible if PG01 > 2 and PG30 = 0 and PG52 = 1 Visible if PG01 > 2 and PG30 = 0 and PG52 = 1 Visible if PG01 > 2 and PG30 = 0 and PG52 = 1

Visible if PG01 > 2 and PG30 = 0 and PG52 = 1

IS-F

Visible if PG01

IS-F

> 1 and PG30 = 0 Visible if PG01 > 2 and PG30 = 0

Page

PF72

PF73

PF74

PF78

PH01

PH02

PH03

PH04

PH05

PH06

PH07

PH08

PH09

PH10 PH11

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Floating condensation offset Set floating condensation min. Set floating condensation max. Side band step overlap Minimum fullscale suction Maximum fullscale suction Minimum fullscale supply Maximum fullscale supply

System ON/OFF from keypad

Circuit ON/OFF from keypad

System ON/OFF from DI

Circuits ON/OFF from DI

System ON/OFF from supervisor

Circuits ON/OFF from supervisor Modbus address Card Modbus address

Floating condensation temperature variation offset

Minimum floating condensation limit value

Maximum floating condensation limit value

Fan side band step overlap factor Sets the minimum full-scale value for the suction probe Sets the maximum full-scale value for the suction probe Sets the minimum full-scale value for the supply probe Sets the maximum full-scale value for the supply probe Enables switching the machine on/off by pressing the ESC key Enables switching circuits on/off by pressing the relevant key Enables switching the machine on/off from the digital input Enables switching circuits on/off from the relevant digital input Enables switching the machine on/off from the supervisor Enables switching circuits on/off from the supervisor

0.0 -20.0 20.0 °C

30.0 10.0 45.0 °C

40.0 10.0 45.0 °C

0 0 100 % IS-F

-0.5 -10.0 PH02

7.0 PH01

0.0 -10.0 PH04

30.0 PH03

YES

NO (0) YES (1)

45.0 Bar IS-V

Bar IS-V

IS-V

IS-F

NO (0) YES (1)

IS-V

NO (0) YES (1)

IS-V

NO (0) YES (1)

IS-V

NO (0) YES (1)

IS-V

1 1 247 IS-V

NO (0) YES (1)

IS-V

Page

PH12

PH13

PH14

PH15

PH20

PH21

PH23

PH24

PH25

PH26

PH31

PH32

PH33

PH35

Modbus baud rate

Modbus parity

Modbus stop bit

Restore default parameters

Compressors inverter consent logic

Fans inverter consent logic

Enable environment temp. probe

Enable external temp. probe

Enable secondary setpoint from DI Enable secondary setpoint from supervisor

Refrigerant

Temperature UoM

Pressure UoM

Enable suction load

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Card communication baud rate 0: 1200 KBit 1: 2400 KBit 2: 4800 KBit 3: 9600 KBit 4: 19200 KBit Modbus parity 0: None 1: Odd 2: Even Modbus stop bit 0: 1 stop bit 1: 2 stop bits This restores the factory default settings if activated Command logic digital output for compressors inverter consent = 0: Energized contact = 1: Energized contact Command logic digital output for fans inverter consent = 0: Energized contact = 1: Energized contact Enables the probe (AI07) for measuring environment temperature Enables the probe (AI08) for measuring the external temperature Enables the secondary setpoint function from the digital input

Enables the secondary setpoint function from the supervisor

Sets the type of refrigerant used (temperature-pressure conversion) 0: No refrigerant 1: R22 2: R134a 3: R404A 4: R407C 5: R410A 6: R507 Sets the units of measurement for temperature: 0: °C 1: °F Sets the units of measurement for pressure: 0: Bar 1: psi Enables compensation for loss of load over the suction

9600

(3)

Even

(2)

(0)

NO NO (0) NC (1) - IS-V

R404A

0 (°C)

0 (Bar)

0 (NO)

1200

(0)

None

(0)

NO (0) YES (1)

0 6 IS-V

0 (°C)

0 (Bar)

0 (NO)

19200

(4)

Even

(2)

(1)

IS-V

1 (°F)

1 (psi)

1 (SI)

IS-V

Page

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

compensation

line (neutral zone) 0: NO 1: YES

Page

PH36

PH40

PH43

PH44

PH45

PH47

PH53 PSd3

PH17

PH18

PH19

Suction load compensation offset

Measurement unit

AI1 probe type

AI2 probe type

AI3_4 probe type

AI5_6 probe type

Buzzer enable Installer PSd

DI alarm logic

DO alarm logic

Other DI logic

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Load loss compensation factor

Sets the display for temperature or pressure 0: Pressure 1: Temperature Sets the type of AI01 analogue input: 2: NTC 3: 0-20mA 4: 4-20mA Sets the type of AI02 analogue input: 2: NTC 3: 0-20mA 4: 4-20mA Sets analogue input type for AI03 and AI04: 2: NTC 3: 0-20mA 4: 4-20mA Sets analogue input type for AI05 and AI06: 2: NTC 3: 0-20mA 4: 4-20mA Enables the buzzer to sound YES (1) NO (0) YES (1) Installer level password

Sets the digital input alarm logic used for controlling the alarms: 0: Normally open NO 1: Normally closed NC Sets the logic for the relays used for the alarms 0: Normally open NO 1: Normally closed NC Sets the digital input alarm logic used for controlling the following functions:

- Global remote OnOff

- Circuit remote OnOff

- compressor/fan secondary setpoint 0: Normally open NO 1: Normally closed NC

ALARM PARAMETERS

0.2 0.1 5.0 Bar IS-V

(Pres.)

4-20mA

(Pres.)

2 4 IS-V

(Temp.)

0 -999 9999 IS-V

NO (0)

NC (1)

NO (0)

NC (1)

NO (0)

NC (1)

IS-V

IS-S

Visible if PG01 > 1

Visible if PG01 > 2

Page

PA01

PA02

PA03

PA04

PA05

PA06

PA07

PA08

PA09

PA10

PA11

PA12

PA13

PA14

PA23

PA15

PA16

PA17

PA18

PA19

PA20

PA21

PA22

PA25 PA26

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Enable compressor operation time alarm Enable fan operation time alarm

HP suction alarm delay

ExPro alarm delay

Fluid level alarm delay Probe alarm delay Supply LP alarm delay

LP suction alarm delay

Comp. thermal alarm delay

Oil differential alarm delay

Supply pressure switch alarm reset Comp. thermal alarm reset Comp. pressureswitch alarm reset

Oil diff. alarm reset

Fan thermal alarm reset C1 suction LP alarm setpoint C1 suction LP alarm diff. C1 suction HP alarm setpoint C1 suction HP alarm diff. C1 supply LP alarm setpoint C1 supply LP alarm diff. C1 supply HP alarm setpoint C1 supply HP alarm diff. C2 suction LP alarm setpoint C2 suction LP Circuit 2 suction probe low 0.5 0.0 20.0 Bar

Enables the alarm pertaining to compressor operation times

Enables the alarm pertaining to fan operation times

Sets the suction high pressure alarm activation delay

Sets the expansion unit alarm activation delay

Sets the fluid level alarm activation delay Sets the suction and supply alarm signalling delay Sets the supply low pressure alarm activation delay Sets the suction low pressure alarm activation delay Sets the compressor thermal alarm activation delay Sets the common oil differential and compressor alarm activation delay Sets the type of reset for the supply pressure-switch alarm Sets the compressor thermal alarm reset type Sets the compressor pressure-switch alarm reset type Sets the compressor oil differential alarm reset type . Sets the fan thermal alarm reset type Circuit 1 suction probe low pressure alarm setpoint Circuit 1 suction probe low pressure alarm differential Circuit 1 suction probe high pressure alarm setpoint Circuit 1 suction probe high pressure alarm differential Circuit 1 supply probe low pressure alarm setpoint Circuit 1 supply probe low pressure alarm differential Circuit 1 supply probe high pressure alarm setpoint Circuit 1 supply probe high pressure alarm differential Circuit 2 suction probe low pressure alarm setpoint

NO (0) YES (1)

30 0 999 Sec

1 0 999 Sec

90 0 999 Sec

5 0 240 Sec

30 0 999 Sec

0 0 999 Sec

10 0 999 Sec

NO (0) YES (1)

0.5 PH01

0.5 0.0 20.0 Bar

4.0 PA15

0.5 0.0 20.0 Bar

2.0 PH03

0.5 0.0 20.0 Bar

20.0 PA19

1.0 0.0 20.0 Bar

0.5 PH01

A (0)

M (1)

PA17

PH02

PA21

PH04

PA27

IS-S

Bar

IS-S

Only in

IS-S

IS-S IS-S Visible if PG01

versions with expansion unit

M:manual A: automatic

M: manual A: automatic

Visible if PG01 > 1

Page

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

PA27

PA28

PA29

PA30

PA31

PA32

PA35

PA36

PA37

PA38

alarm diff. Circuit 2 suction HP alarm setpoint . C2 suction HP alarm diff.

C2 supply LP alarm setpoint

C2 supply LP alarm diff.

C2 supply HP alarm setpoint

Circuit 2 supply HP alarm diff. . C3 suction LP alarm setpoint C3 suction LP alarm diff. C3 suction HP alarm setpoint C3 suction HP alarm diff.

pressure alarm differential Circuit 2 suction probe high

pressure alarm setpoint Circuit 2 suction probe high

pressure alarm differential Circuit 2 supply probe low

pressure alarm setpoint

Circuit 2 supply probe low pressure alarm differential

Circuit 2 supply probe high pressure alarm setpoint

Circuit 2 supply probe high pressure alarm differential

Circuit 3 suction probe low pressure alarm setpoint Circuit 3 suction probe low pressure alarm differential Circuit 3 suction probe high pressure alarm setpoint Circuit 3 suction probe high pressure alarm differential

4.0 PA25

0.5 0.0 20.0 Bar

2.0 PH03

0.5 0.0 20.0 Bar

20.0 PA29

1.0 0.0 20.0 Bar

0.5 PH01

0.5 0.0 20.0 Bar

4.0 PA35

0.5 0.0 20.0 Bar

PH02

Bar

IS-S

PA31

Bar

IS-S

PH04

Bar

IS-S

PA37

Bar

IS-S

PH02

Bar

IS-S

> 1 Visible if PG01

> 1 Visible if PG01 > 1 and PG30 = 0 Visible if PG01 > 1 and PG30 = 0 Visible if PG01 > 1 and PG30 = 0 Visible if PG01 > 1 and PG30 = 0 Visible if PG01 > 2 Visible if PG01 > 2 Visible if PG01 > 2 Visible if PG01 > 2

Page

PA39

PA40

PA41

PA42

PH16

PG01

PG02

PG03

PG04

PG05

PG11

PG12

PG15

PG16

PG21

C3 supply LP alarm setpoint

C3 supply LP alarm diff.

C3 supply HP alarm setpoint

C3 supply HP alarm diff.

Compressor safety device type

Circuit number

Enable expansion

Enable differently powered compressors Number of increments per compressor Number of safety devices per compressor

Number of compressors for Circuit 1

Circuit 1 inverter comp. enable

Number of compressors for Circuit 2

Circuit 2 inverter comp. enable

Number of compressors for Circuit 3

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Circuit 3 supply probe low pressure alarm setpoint

Circuit 3 supply probe low pressure alarm differential

Circuit 3 supply probe high pressure alarm setpoint

Circuit 3 supply probe high pressure alarm differential

Sets the type of safety devices used for the compressors: 0: None 1: Thermal 2: Thermal + pressureswitch 3: Thermal + oil diff. 4: All

SYSTEM BUILDER MENU PARAMETERS

Sets the number of circuits for the machine

Enables the expansion unit and the corresponding alarms

Enables the management of compressors with different nominal power ratings

Sets the number of increments for each compressor

Sets the number of safety devices for each compressor

Sets the number of compressors for circuit 1

Enables the compressor with circuit 1 inverter

Sets the number of compressors for circuit 2

Enables the compressor with circuit 2 inverter

Sets the number of compressors for circuit 3

2.0 PH03

0.5 0.0 20.0 Bar

20.0 PA39

1.0 0.0 20.0 Bar

Thermal None (0) All (4)

2 1 3 CO-W

1 0 3 CO-W

2 0 12 CO-W

0 0 12 CO-W

PA41

PH04

NO (0) YES (1)

NO (0) YES (0)

Bar

IS-S

CO-W

IS-S

Visible if PG01 > 2 and PG30 = 0 Visible if PG01 > 2 and PG30 = 0 Visible if PG01 > 2 and PG30 = 0 Visible if PG01 > 2 and PG30 = 0

Default = 1

on C-PRO MEGA RACK

Default = 0

on C-PRO MEGA RACK

Default = 4 Max = 8

on C-PRO MEGA RACK

Default = 0 Max = 8

on C-PRO MEGA RACK; Visible if PG01 > 1 Visible if PG01 > 1 Max = 8 on C-PRO MEGA RACK; Visible if PG01 > 2

Page

PG22

PG30

PG32

PG41

PG42

PG45

PG46

PG51

PG52

PH20

PH21

PH22

PH27

PSd4

Circuit 3 inverter comp. enable Enable unique condensation

Fan safety device

Number of fans for Circuit 1

Circuit 1 fan inverter enable

Number of fans for Circuit 2

Circuit 2 fan inverter enable

Number of fans for Circuit 3

Circuit 3 fan inverter enable

Circuit 1 system type or control unit type

Circuit 2 control unit type

Circuit 3 control unit type

Home page

System builder PSd

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Enables the compressor with circuit 3 inverter Sets unique condensation for the fan unit Enables the fan thermal safety device

Sets the number of fans for

SYSTEM BUILDER MENU PARAMETERS – Compressor and fan digital output positions

circuit 1

Enables the fan with circuit 1 inverter

Sets the number of fans for circuit 2

Enables the fan with circuit 2 inverter

Sets the number of fans for circuit 3

Enables the fan with circuit 3 inverter

Sets the type of control unit for the first circuit*: 0: 1: BT 2: TN 3: AT Sets the type of control unit for the second circuit: 0: 1: BT 2: TN 3: AT Sets the type of control unit for the third circuit: 0: 1: BT 2: TN 3: AT Selects the home page to be displayed at machine startup: 0: Global 1: Circuit1 2: Circuit 2* 3: Circuit 3* System builder level password

NO (0)

SO (0)

NO (0) YES (1)

YES

NO (0) YES (1)

2 0 12 CO-W

NO (0) YES (0)

2 0 12 CO-W

NO (0) YES (0)

0 0 12 CO-W

NO (0) YES (0)

- - (0) AT (3)

Global

(0)

0 -999 9999 CO-Pa

Global

(0)

Circuit 3

(3)

CO-W

CO-Pa

Visible if PG01 > 2 Dual – triple circuits only

Default = 3 Max = 8

on C-PRO MEGA RACK

Default = 0 Max = 8

on C-PRO MEGA RACK; Visible if PG01 > 1 and PG30 = 0 Visible if PG01 > 1 and PG30 = 0 Max = 8 on C-PRO MEGA RACK; Visible if PG01 > 2 and PG30 = 0 Visible if PG01 > 2 and PG30 = 0

* In the case of a single circuit system the parameter sets the system type

Visible if PG01 > 1

Visible if PG01 > 2

* If PH27=2.3 and the relevant circuit is not enabled, assume a default value of “0”

Page

HC01

HC11

HC21

HC31

HC02

HC12

HC22

HC32

HC03

HC13

HC23

HC33

C1 comp. DO position

C1 increment 1 DO position

C1 increment 2 DO position

C1 increment 3 DO position

Compressor C2 DO position

C2 increment 1 DO position

C2 increment 2 DO position

C2 increment 3 DO position

Compressor C3 DO position

C3 increment 1 DO position

C3 increment 2 DO position

C3 increment 3 DO position

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Sets the position of the digital output for compressor 1 Or compressor inverter consent position

Sets the position of the increment 1 digital output for compressor 1

Sets the position of the increment 2 digital output for compressor 1

Sets the position of the increment 3 digital output for compressor 1

Sets the position of the digital output for compressor 2 Or compressor inverter consent position

Sets the position of the increment 1 digital output for compressor 2

Sets the position of the increment 2 digital output for compressor 2

Sets the position of the increment 3 digital output for compressor 2

Sets the position of the digital output for compressor 3 Or compressor inverter consent position

Sets the position of the increment 1 digital output for compressor 3

Sets the position of the increment 2 digital output for compressor 3

Sets the position of the increment 3 digital output for compressor 3

1 0 13 (26) CO-Hw

2 0 13 (26)

0 0 13 (26)

3 0 13 (26)

4 0 13 (26)

0 0 13 (26)

5 0 13 (26)

6 0 13 (26)

0 0 13 (26)

CO-Hw

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Default = 0 Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Default = 0 Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Default = 4 Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Default = 0 Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

*¹

Page

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

HC04

HC14

HC24

HC34

HC05

HC15

HC25

HC35

HC06

HC16

HC26

HC36

HC07

HC17

Compressor C4 DO position

C4 increment 1 DO position

C4 increment 2 DO position

C4 increment 3 DO position

Compressor C5 DO position

C5 increment 1 DO position

C5 increment 2 DO position

C5 increment 3 DO position

Compressor C6 DO position

C6 increment 1 DO position

C6 increment 2 DO position

C6 increment 3 DO position

Compressor C7 DO position

C7 increment 1 DO position

Sets the position of the digital output for compressor 4 Or compressor inverter consent position

Sets the position of the increment 1 digital output for compressor 4

Sets the position of the increment 2 digital output for compressor 4

Sets the position of the increment 3 digital output for compressor 4

Sets the position of the digital output for compressor 5 Or compressor inverter consent position

Sets the position of the increment 1 digital output for compressor 5

Sets the position of the increment 2 digital output for compressor 5

Sets the position of the increment 3 digital output for compressor 5

Sets the position of the digital output for compressor 6 Or compressor inverter consent position

Sets the position of the increment 1 digital output for compressor 6

Sets the position of the increment 2 digital output for compressor 6

Sets the position of the increment 3 digital output for compressor 6

Sets the position of the digital output for compressor 7 Or compressor inverter consent position Sets the position of the increment 1 digital output

8 0 13 (26)

0 0 13 (26)

13 (26)

CO-Hw

Default = 5 Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Default = 0 Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO

*¹

Page

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

HC27

HC37

HC08

HC18

HC28

HC38

HC09

HC19

HC29

HC39

HC10

HC20

HC30

C7 increment 2 DO position

C7 increment 3 DO position

Compressor C8 DO position

C8 increment 1 DO position

C8 increment 2 DO position

C8 increment 3 DO position

Compressor C9 DO position

C9 increment 1 DO position

C9 increment 2 DO position

C9 increment 3 DO position

Compressor C10 DO position

C10 increment 1 DO position

C10 increment 2 DO position

for compressor 7

Sets the position of the increment 2 digital output for compressor 7

Sets the position of the increment 3 digital output for compressor 7

Sets the position of the digital output for compressor 8 Or compressor inverter consent position

Sets the position of the increment 1 digital output for compressor 8

Sets the position of the increment 2 digital output for compressor 8

Sets the position of the increment 3 digital output for compressor 8

Sets the position of the digital output for compressor 9 Or compressor inverter consent position

Sets the position of the increment 1 digital output for compressor 9

Sets the position of the increment 2 digital output for compressor 9

Sets the position of the increment 3 digital output for compressor 9

Sets the position of the digital output for compressor 10 Or compressor inverter consent position

Sets the position of the increment 1 digital output for compressor 10

Sets the position of the increment 2 digital output for compressor 10

0 0 13 (26)

CO-Hw

0 0 13 (26)

CO-Hw

0 0 13 (26)

CO-Hw

0 0 13 (26)

CO-Hw

0 0 13 (26)

CO-Hw

0 0 13 (26)

CO-Hw

0 0 13 (26)

CO-Hw

0 0 13 (26)

CO-Hw

0 0 13 (26)

CO-Hw

0 0 13 (26)

CO-Hw

0 0 13 (26)

CO-Hw

0 0 13 (26)

CO-Hw

0 0 13 (26)

CO-Hw

MEGA RACK; Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

*¹

Page

HC40

HC50

HC51

HC52

HC53

HC60

HC61

HC62

HC63

HF01

HF02

HF03

C10 increment 3 DO position

Compressor C11 DO position

C11 increment 1 DO position

C11 increment 2 DO position

C11 increment 3 DO position

Compressor C12 DO position

C12 increment 1 DO position

C12 increment 2 DO position

C12 step 3 DO position

Fan 1 DO position

Fan 2 DO position

Fan 3 DO position

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Sets the position of the increment 3 digital output for compressor 11

Sets the position of the digital output for compressor 11 Or compressor inverter consent position

Sets the position of the increment 1 digital output for compressor 11

Sets the position of the increment 2 digital output for compressor 11

Sets the position of the increment 3 digital output for compressor 11

Sets the position of the digital output for compressor 12 Or compressor inverter consent position

Sets the position of the increment 1 digital output for compressor 12

Sets the position of the increment 2 digital output for compressor 12

Sets the position of the step 3 digital output for compressor 12

Sets the position of the digital output for fan 1 Or fan inverter consent position

Sets the position of the digital output for fan 2 Or fan inverter consent position

Sets the position of the digital output for fan 3 Or fan inverter consent position

0 0 13 (26)

10 0 13 (26)

11 0 13 (26)

12 0 13 (26)

CO-Hw

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Default = 6 Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Default = 7 Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Default = 8 Max = 8(16)

on C-PRO MEGA RACK;

Visibility

*¹

*²

Page

HF04

HF05

HF06

HF07

HF08

HF09

HF10

HF11

HF12

HA01

HA11

HA21

HA31

Fan 4 DO position

Fan 5 DO position

Fan 6 DO position

Fan 7 DO position

Fan 8 DO position

Fan 9 DO position

Fan 10 DO position

Fan 11 DO position

Fan 12 DO position

Global alarm DO position

Circuit 1 alarm DO pos.

Circuit 2 alarm DO pos.

Circuit 3 alarm DO pos.

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Sets the position of the digital output for fan 4 Or fan inverter consent position

Sets the position of the digital output for fan 5 Or fan inverter consent position

Sets the position of the digital output for fan 6 Or fan inverter consent position

Sets the position of the digital output for fan 7 Or fan inverter consent position

Sets the position of the digital output for fan 8 Or fan inverter consent position

Sets the position of the digital output for fan 9 Or fan inverter consent position

Sets the position of the digital output for fan 10 Or fan inverter consent position

Sets the position of the digital output for fan 11 Or fan inverter consent position

Sets the position of the digital output for fan 12 Or fan inverter consent position

Sets the position of the global alarm relay

Sets the position of alarm relay for circuit 1

Sets the position of alarm relay for circuit 2

Sets the position of alarm relay for circuit 3

13 0 13 (26)

0 0 13 (26)

9 0 13 (26) CO-Hw

0 0 13 (26) CO-Hw

CO-Hw

Default = 0 Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Max = 8(16)

on C-PRO MEGA RACK;

Visibility

Default = 2 Max = 8(16)

on C-PRO MEGA RACK

Max = 8(16)

on C-PRO MEGA RACK

Max = 8(16)

on C-PRO MEGA RACK; Visible if PG01 > 1

Max = 8(16)

on C-PRO MEGA RACK; Visible if PG01 > 2

*²

Page

Hd01

Hd02

Hd03

Hd11

Hd12

Hd13

Hd14

Hd15

Hd16

Hd21

Hd22

Hd23

Global OnOff DI position

Comp. sec. setP DI position

Fan sec. setP DI position

C1 OnOff DI position

C1 fluid level alarm DI pos.

C1 suction LP alarm DI pos.

C1 supply HP alarm DI pos.

C1 comp. oil diff. alarm DI pos.

C1 comp. fan thermal alarm DI pos.

C2 OnOff DI position

C2 fluid level alarm DI pos.

C1 suction LP alarm DI pos.

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

SYSTEM BUILDER MENU PARAMETERS – Other hardware digital input/output positions

Sets the position of the system global on/off digital input Sets the position for compressor management secondary setpoint digital input Sets the position for fan management secondary setpoint digital input

Sets the position of the circuit 1 on/off digital input

Sets the position of the circuit 1 fluid level alarm digital input

Sets the position of the circuit 1 suction pressureswitch low pressure alarm digital input Sets the position of the circuit 1 supply pressureswitch high pressure alarm digital input Sets the position of the circuit 1 compressor oil differential alarm digital input Sets the position of the circuit 1 common fan thermal alarm digital input

Sets the position of the circuit 2 on/off digital input

Sets the position of the circuit 2 fluid level alarm digital input

Sets the position of the circuit 2 suction pressureswitch low pressure alarm digital input

0 0 12 (22) CO-Hw

0 0 12 (22)

0 0 12 (22) CO-Hw

7 0 12 (22)

9 0 12 (22)

11 0 12 (22)

0 0 12 (22)

5 0 12 (22)

0 0 12 (22) CO-Hw

8 0 12 (22)

10 0 12 (22)

CO-Hw

Max =10(18) on C-PRO MEGA RACK

Max =10(18) on C-PRO MEGA RACK Max =10(18) on C-PRO MEGA RACK

Default = 6 Max =10(18)

on C-PRO MEGA RACK

Default = 7 Max =10(18)

on C-PRO MEGA RACK

Default = 8 Max =10(18)

on C-PRO MEGA RACK

Max =10(18) on C-PRO MEGA RACK

Max =10(18) on C-PRO MEGA RACK Max =10(18) on C-PRO MEGA RACK; Visible if PG01 > 1

Default = 0 Max =10(18)

on C-PRO MEGA RACK; Visible if PG01 > 1

Default = 0 Max =10(18)

on C-PRO MEGA RACK; Visible if PG01 > 1

Page

Hd24

Hd25

Hd26

Hd31

Hd32

Hd33

Hd34

Hd35

Hd36

Hd41

C2 supply HP alarm DI pos.

C2 comp. oil diff. alarm DI pos.

C2 comp. fan thermal alarm DI pos.

C3 OnOff DI position

C3 fluid level alarm DI pos.

C3 suction LP alarm DI pos.

C3 supply HP alarm DI pos.

C3 comp. oil diff. alarm DI pos.

C3 comp. fan thermal alarm DI pos.

Comp. 1 thermal DI pos.

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Sets the position of the circuit 2 supply pressureswitch high pressure alarm digital input

Sets the position of the circuit 2 compressor oil differential alarm digital input

Sets the position of the circuit 2 common fan thermal alarm digital input

Sets the position of the circuit 3 on/off digital input

Sets the position of the circuit 3 fluid level alarm digital input

Sets the position of the circuit 3 suction pressureswitch low pressure alarm digital input

Sets the position of the circuit 3 supply pressureswitch high pressure alarm digital input

Sets the position of the circuit 3 compressor oil differential alarm digital input

Sets the position of the circuit 3 common fan thermal alarm digital input

Sets the position of the compressor 1 thermal alarm digital input

12 0 12 (22)

0 0 12 (22)

CO-Hw

6 0 12 (22)

CO-Hw

0 0 12 (22) CO-Hw

0 0 12 (22)

CO-Hw

0 0 12 (22)

CO-Hw

0 0 12 (22)

CO-Hw

0 0 12 (22)

CO-Hw

1 0 12 (22)

CO-Hw

Default = 0 Max =10(18)

on C-PRO MEGA RACK; Visible if PG01 > 1 and PG30 = 0 Max =10(18) on C-PRO MEGA RACK; Visible if PG01 > 1

Default = 0 Max =10(18)

on C-PRO MEGA RACK; Visible if PG01 > 1 and PG30 = 0 Max =10(18) on C-PRO MEGA RACK; Visible if PG01 > 2 Max =10(18) on C-PRO MEGA RACK; Visible if PG01 > 2 Max =10(18) on C-PRO MEGA RACK; Visible if PG01 > 2 Max =10(18) on C-PRO MEGA RACK; Visible if PG01 > 2 and PG30 = 0 Max =10(18) on C-PRO MEGA RACK; Visible if PG01 > 2 Max =10(18) on C-PRO MEGA RACK; Visible if PG01 > 2 and PG30 = 0

Max =10(18)

on C-PRO MEGA RACK; Visibility *¹

Page

Hd42

Hd43

Hd44

Hd45

Hd46

Hd47

Hd48

Hd49

Hd50

Comp. 2 thermal DI pos.

Comp. 3 thermal DI pos.

Comp. 4 thermal DI pos.

Comp. 5 thermal DI pos.

Comp. 6 thermal DI pos.

Comp. 7 thermal DI pos.

Comp. 8 thermal DI pos.

Comp. 9 thermal DI pos.

Comp. 10 thermal DI pos.

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Sets the position of the compressor 2 thermal alarm digital input

2 0 12 (22)

CO-Hw

Max =10(18) on

C-PRO MEGA RACK; Visibility *¹

Sets the position of the compressor 3 thermal alarm digital input

3 0 12 (22)

CO-Hw

Max =10(18) on

C-PRO MEGA RACK; Visibility *¹

Sets the position of the compressor 4 thermal alarm digital input

4 0 12 (22)

CO-Hw

Max =10(18) on

C-PRO MEGA RACK; Visibility *¹

Sets the position of the compressor 5 thermal alarm digital input

0 0 12 (22)

CO-Hw

Max =10(18) on

C-PRO MEGA RACK; Visibility *¹

Sets the position of the compressor 6 thermal alarm digital input

0 0 12 (22)

CO-Hw

Max =10(18) on

C-PRO MEGA RACK; Visibility *¹

Sets the position of the compressor 7 thermal alarm digital input

0 0 12 (22)

CO-Hw

Max =10(18) on

C-PRO MEGA RACK; Visibility *¹

Sets the position of the compressor 8 thermal alarm digital input

0 0 12 (22)

CO-Hw

Max =10(18) on

C-PRO MEGA RACK; Visibility *¹

Sets the position of the compressor 9 thermal alarm digital input

0 0 12 (22)

CO-Hw

Max =10(18) on

C-PRO MEGA RACK; Visibility *¹

Sets the position of the compressor 10 thermal

0 0 12 (22)

CO-Hw

Max =10(18) on

Page

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Hd51

Hd52

Hd61

Hd62

Hd63

Comp. 11 thermal DI pos.

Comp. 12 thermal DI pos.

Compressor 1 pressure-switch DI pos.

Compressor 2 pressure-switch DI pos.

Compressor 3 pressure-switch DI pos.

alarm digital input

Sets the position of the compressor 11 thermal alarm digital input

Sets the position of the compressor 12 thermal alarm digital input

Sets the position of the compressor 1 pressureswitch alarm digital input

Sets the position of the compressor 2 pressureswitch alarm digital input

Sets the position of the compressor 3 pressureswitch alarm digital input

C-PRO MEGA RACK; Visibility *¹

Max

0 0 12 (22)

CO-Hw

=10(18) on C-PRO MEGA RACK; Visibility *¹

Max

0 0 12 (22)

CO-Hw

=10(18) on C-PRO MEGA RACK; Visibility *¹

Max =10(18) on

0 0 12 (22)

CO-Hw

C-PRO MEGA RACK; Visibility *¹

Max

0 0 12 (22)

CO-Hw

=10(18) on C-PRO MEGA RACK; Visibility *¹

Max

0 0 12 (22)

CO-Hw

=10(18) on C-PRO MEGA RACK; Visibility *¹

Page

Hd64

Hd65

Hd66

Hd71

Hd72

Hd73

Hd74

Hd75

Hd76

Compressor 4 pressure-switch DI pos.

Compressor 5 pressure-switch DI pos.

Compressor 6 pressure-switch DI pos.

Compressor 1 oil diff. DI pos.

Compressor 2 oil diff. DI pos.

Compressor 3 oil diff. DI pos.

Compressor 4 oil diff. DI pos.

Compressor 5 oil diff. DI pos.

Compressor 6 oil diff. DI pos.

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Sets the position of the compressor 4 pressureswitch alarm digital input

0 0 12 (22)

CO-Hw

Max =10(18) on

C-PRO MEGA RACK; Visibility *¹

Sets the position of the compressor 5 pressureswitch alarm digital input

0 0 12 (22)

CO-Hw

Max =10(18) on

C-PRO MEGA RACK; Visibility *¹

Sets the position of the compressor 6 pressureswitch alarm digital input

0 0 12 (22)

CO-Hw

Max =10(18) on

C-PRO MEGA RACK; Visibility *¹

Max =10(18) on

Position of the compressor 1 oil differential alarm digital input

0 0 12 (22)

CO-Hw

C-PRO MEGA RACK; Visibility *¹

Max =10(18) on

Position of the compressor 2 oil differential alarm digital input

0 0 12 (22)

CO-Hw

C-PRO MEGA RACK; Visibility *¹

Max =10(18) on

Position of the compressor 3 oil differential alarm digital input

0 0 12 (22)

CO-Hw

C-PRO MEGA RACK; Visibility *¹

Max =10(18) on

Position of the compressor 4 oil differential alarm digital input

0 0 12 (22)

CO-Hw

C-PRO MEGA RACK; Visibility *¹

Max =10(18) on

Position of the compressor 5 oil differential alarm digital input

0 0 12 (22)

CO-Hw

C-PRO MEGA RACK; Visibility *¹

Position of the compressor 6 oil differential alarm digital

0 0 12 (22)

CO-Hw

Max =10(18) on

Page

Hd81

Hd82

Hd83

Hd84

Hd85

Fan 1 thermal DI pos.

Fan 2 thermal DI pos.

Fan 3 thermal DI pos.

Fan 4 thermal DI pos.

Fan 5 thermal DI pos.

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

input

C-PRO MEGA RACK; Visibility *¹

Max =10(18)

Sets the position of the fan 1 thermal alarm digital input

Sets the position of the fan 2 thermal alarm digital input

Sets the position of the fan 3 thermal alarm digital input

Sets the position of the fan 4 thermal alarm digital input

Sets the position of the fan 5 thermal alarm digital input

0 0 12 (22)

CO-Hw

on C-PRO MEGA RACK;

Visibility Max =10(18)

on C-PRO MEGA RACK;

Visibility Max =10(18) on C-PRO MEGA RACK; Visibility Max =10(18) on C-PRO MEGA RACK; Visibility Max =10(18) on C-PRO MEGA RACK; Visibility

*²

Page

Hd86

Hd87

Hd88

Hd89

Hd90

Hd91

Hd92

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Max =10(18)

Fan 6 thermal DI pos.

Fan 7 thermal DI pos.

Fan 8 thermal DI pos.

Fan 9 thermal DI pos.

Fan 10 thermal DI pos.

Fan 11 thermal DI pos.

Fan 12 thermal DI pos.

Once machine parameters are configured, and every time configuration parameters are modified, it is recommended the system be switched off and restarted in order to allow the card to configure itself correctly.

Sets the position of the fan 6 thermal alarm digital input

Sets the position of the fan 7 thermal alarm digital input

Sets the position of the fan 8 thermal alarm digital input

Sets the position of the fan 9 thermal alarm digital input

Sets the position of the fan 10 thermal alarm digital input

Sets the position of the fan 11 thermal alarm digital input

Sets the position of the fan 12 thermal alarm digital input

0 0 12 (22)

CO-Hw

on C-PRO MEGA RACK;

Visibility Max =10(18) on C-PRO MEGA RACK; Visibility Max =10(18) on C-PRO MEGA RACK; Visibility Max =10(18) on C-PRO

MEGA RACK; Visibility Max =10(18)

on C-PRO MEGA RACK;

Visibility Max =10(18) on C-PRO MEGA RACK; Visibility Max =10(18)

on C-PRO MEGA RACK;

Visibility

NOTES:

(*¹) Compressor visibility conditional.

Parameter visible if the compressor is configured: i.e. if the sum of the parameters indicating the number of compressors per circuit (enabled) PG11, PG15, PG21 is greater than or equal to the compressor in question.

(*¹) Fan visibility conditional.

Parameter visible if the fan is configured: i.e. if the sum of the parameters indicating the number of fans per circuit (enabled) PG41, PG45, PG51 is greater than or equal to the fan in question.

The Default values for certain parameters vary depending on which controller is being used; the differences are highlighted in the parameter table Notes field.

*²

Page

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

6 REGULATIONS

6.1 Machine configuration

A Wizard (System builder menu) allows assisted configuration of the machine. The first choice refers to the number of circuits (1, 2 or 3) by means of parameter PG01; in the case of dual and triple circuit machines, the selection of the type of condensation, single or separate, (PG30) and the presence, or otherwise, of an expansion unit (PG02) are also important. These 3 parameters define the type of machine and the hardware supported, in accordance with the following table:

Machine type Single-circuit Dual-circuit Triple-circuit

Single condensation

Probe AI 1

Probe AI 2

Probe AI 3

Probe AI 4

Probe AI 5

Probe AI 6

Probe AI 7

Probe AI 8

Analogue output AO 1

Analogue output AO 2

Analogue output AO 3

Analogue output AO 4 Number of digital inputs Number of digital outputs

Suction pressure*³

n.r.

Supply pressure*

- -

- - -

Environment

temperature

External

temperature

Compressor with

inverter

Fan with inverter

12 (22)*

13 (26)*

¹ ¹

C1 suction pressure*³

C1 supply pressure* C2 suction pressure*³

C2 supply pressure*

Environment

temperature

External

temperature

Compressor with

inverter C1

Compressor with

inverter C2

Fan with

inverter C1

Fan with inverter

12 (22)*

13 (26)*

¹ ¹

YES

C1 suction

pressure*³

Supply pressure*

C2 suction

pressure*³

C3 suction

pressure*³

Environment

temperature

External

temperature

Compressor with

inverter C1

Compressor with

inverter C2

Fan with inverter

12 (22)*

13 (26)*

- - Fan with inverter

¹ ¹

C1 suction pressure*³

C1 supply pressure* C2 suction pressure*³

C2 supply pressure* C3 suction pressure*³

C3 supply pressure*

Environment

temperature

External

temperature

Compressor /

Fan with inverter

Compressor /

Fan with inverter

Compressor / Fan

with inverter C3 *

12 (22)*

13 (26)*

C1 *

C2 *

Supply pressure*

Environment

temperature

Compressor /

Fan with inverter

Compressor with

inverter C2 *

Compressor with

inverter C3 *

¹ ¹

(*¹) If there is an expansion unit, the number of digital inputs and outputs increases, and it is possible to configure more hardware, depending on requirements.

(*²) In triple-circuit machines, inverter use is exclusively between compressors and fans.

(*³) The probes can also measure temperature by changing the relevant driver parameters: PH43, PH44, PH45, PH47. Temperature is transformed into pressure by selecting the type of refrigerant gas used (parameter PH31).

YES

C1 suction pressure*³

C2 suction pressure*³

C3 suction pressure*³

External

C1 *

12 (22)*

13 (26)*

¹ ¹

Page

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

The same wizard also sets the number of compressors and fans for each circuit, the presence of an inverter, compressors and fans, the number of increments and compressor safety devices and enables fan safety devices.

Note: Enabling the inverter for the compressors regulation, the FIRST compressor will be that commanded by the inverter, the other following compressors will be hermetic type (without capacity stages) and will be commanded by a relay digital output. Likewise, enabling the inverter for the fans regulation, the FIRST fan will be that commanded by the inverter, the other following fans will be commanded by a relay digital output. For each inverter in necessary to configure the digital outputs position for the consent at device activation.

6.2 Machine and individual circuit status

There are several procedures for switching the unit or individual circuits on/off:

1) Using the relevant On/Off key (parameter enabled function)

Machine/circuit on: press and hold the relevant key for approx. 2 seconds: if all other enabled conditions are present, the machine or individual circuit will be switched “ON”. Machine/circuit off: press and hold the relevant key for approx. 2 seconds: the machine or individual circuit will be switched “OFF”.

2) Using the digital input On/Off command (parameter enabled function)

Machine/circuit on: close the remote On/Off contact: if all other enabled conditions are present, the machine or individual circuit will be switched “ON”. Machine/circuit off: if the remote On/Off contact is open, the machine or individual circuit is switched “OFF by digital input” (indicated by the wording “OFF_D” for the individual circuit status).

3) By means of the supervision protocol (parameter enabled function)

Machine/circuit on: activate the on state by means of the protocol: if all other enabled conditions are present, the machine or individual circuit will be switched “ON”. Machine/circuit off: if the on state is deactivated from the protocol, the machine or individual circuit is switched “OFF by supervision protocol” (indicated by the wording “OFF_S” for the individual circuit status).

The status of “On/Off by key” overrides the other two, indeed, the “On/Off by digital input and supervision protocol” statuses can only be achieved when the machine is switched on using the appropriate key.

A machine that is switched off by digital input can:

⋅ be switched to the OFF status by key (by pressing the ESC key). ⋅ be switched to the OFF by supervisor state if fulfilling the “OFF by digital input”

conditions, and the “OFF by supervisor” status is set.

⋅ be switched to the ON state if fulfilling the “OFF by digital input” conditions, and the “OFF

by supervisor” status is not set.

A machine that is switched off by supervision protocol can:

⋅ be switched to the OFF status by key (by pressing the ESC key). ⋅ be switched to the “OFF by digital input state” if fulfilling the “OFF by supervisor”

conditions, and the “OFF by digital input” status is tripped.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

⋅ be switched to the ON state if fulfilling the “OFF by supervisor” conditions, and the “OFF

by digital input” condition is not met.

The machine On/Off key is the ESC key, pressed for approx. 2 seconds. The remote On/Off inputs (if present) are configured by means of the relevant parameters.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

6.3 Compressor regulation

Control of compressor suction pressure envisages the management of the latter in order to reach and maintain a defined working pressure value: depending on the type of control (side band or neutral zone) and the use, or otherwise, of inverters for fine adjustment, four types of regulation are envisaged.

6.3.1 Side band regulation

Side band control exploits the characteristics of PI (proportional and integral) or P (proportional) regulators to establish when to insert or disengage the compressors used, so as to regularise, within the differential band, the switching on and off of the various devices. The purpose of PI regulation is to have no error in full operation. The parameters defining this regulation are as follows:

⋅ Integral time (IT) ⋅ Proportional band (PB) ⋅ Side band suction SetPoint (SP)

Steps

Max Steps

Suction pressure

SP SP + BP

The above figure shows the behaviour of band regulation (SP, SP + PB). Depending on the suction pressure value, regulation adds or removes the number of steps to request from the compressors. Under such regulation, the band is displaced above the setpoint.

It is possible to select whether control will refer to PI or just P regulation, by either setting the parameter for integral action, namely the integration time (TI), or otherwise. In the specific case where this parameter is set to the value zero, regulation is proportional only, otherwise, it is also integral. Ti corresponds to the time necessary for integral action, assuming constant error, to equalise the proportional action: the speed of this action is proportional to the integration time value. The default parameter is greater than zero, hence, by default, regulation exploits the proportional-integral characteristic.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

The PC78 Sideband step overlap parameter allows improvements in the behaviour of this type of regulation, which requires broad proportional bands in order to be stable, thus modifying the subdivision of the regulation band between steps:

Steps

Release

PC78 %

SP SP + BP

100 - PC78 %

Insertion

Max Steps

Suction

The insertion of steps occurs at PC78% of the proportional band, while release occurs at 100 – PC78% of the band; if for example PC78 = 60%, steps are inserted between 60% and the maximum value (100%) of the proportional band PB, and in the same way released between 40% and the minimum value (0%) of the same band PB. It is obvious that by using step division, as indicated in the figure, the activity interval of each individual step is greater with respect to standard geometric division, with the obvious advantage that the proportional band may be reduced, in favour of greater regulation accuracy, and/or the activation of the steps occurs with reduced frequency, or reduced compressor start-ups, to the benefit of the mechanical lifespan of the same.

6.3.2 Neutral zone regulation

This type of regulation envisages the definition of a neutral zone, within which no activation or deactivation decision will be taken, i.e. startup operations will not be requested for any of the devices. The parameters defining this regulation are as follows:

⋅ Neutral zone (NZ) ⋅ Out of zone differential (Diff) ⋅ Side band suction SetPoint (SP)

Outwith said neutral zone, device on or off requests for the various steps provided by the compressors will follow this logic:

⋅ Switch on : When the suction pressure exceeds the setPoint + Neutral Zone threshold ⋅ Switch off : when the pressure drops below the setPoint

In this type of regulation, the neutral zone is displaced to the right of the setPoint. As may be deduced from the figure, regulation envisages setting times, within which, depending on

NZ_TOnMax NZ_TOffMax

Switching on Switching off

NZ_TOffMin Neutral zone

SP SP + ZN SP + ZN + Diff SP - Diff

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NZ_TOnMin

Suction pressure

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

the zone, the on and off requests for the various steps must be timed. The relevant parameters are as follows:

⋅ Minimum switch-on time (NZ_TOnMin) ⋅ Maximum switch-on time (NZ_TOnMax) ⋅ Minimum switch-off time (NZ_TOffMin) ⋅ Maximum switch-off time (NZ_TOffMax)

On the basis of the suction pressure value approaching the reference value, the times will vary proportionally according to the values set. Depending on the circumstances, the reference value mentioned represents the right and left limit of the neutral zone with the addition of a further differential (settable by means of a parameter) within which will be the proportional variation for the time in question. At the regulation limits, the on and off time values are the maximum and minimum times set by the parameter. To make the request time constant during switching on, simply set parameters NZ_TOnMin and NZ_TOnMax to the same value. The same applies for switching off.

6.3.3 Side band regulation with inverter

This type of control introduces inverter control to normal side band control, and in order to do this it is essential to set several parameters relating to the inverter device it is intended to use, in addition to enabling its use. The parameters in question are the following:

⋅ Inverter differential (ID) ⋅ Inverter enabling ⋅ Inverter offset with respect to the suction setPoint (OFSI) ⋅ Minimum inverter value (MinI) ⋅ SpeedUp time ⋅ Side band suction SetPoint (SP)

Inverter

100.00 %

MinI

SP + OFSI SP + OFSI + DI

Pressure

The regulator output will assume different values depending on the value measured by the suction probe. If the value measured by the probe is less than or equal to the value of SP + OFSI, the regulator output assumes the value 0. If the value measured by the probe is between the value of SP + OFSI and the value of SP + OFSI + ID, the regulator output will assume a value proportional to the suction probe value. In the case where the suction probe assumes a value greater than or equal to the value of SP + OFSI + ID, the inverter output will assume the maximum value. In the case where the parameter MinI has been set, then with each switching on, the inverter will maintain that value as the starting value. Where the speedUp time parameter is greater than zero, with each startup, the inverter will assume the maximum value for the number of seconds set by this parameter.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

The range of values the inverter output may assume is comprised of between 0 and 100 percentage points, with two decimal places. By enabling the inverter, for a given number of compressors, one step is lost, which will be replaced by regulation with inverter on the first compressor. Below is given an example of how to change regulation with the presence of an inverter.

Example: 4 compressors w/o inverter Example: 4 compressors with 1 inverter

Steps

Max Steps

SP SP + BP

Inverter

Pressure

SP SP + BP

MinI

SP + OFSI SP + OFSI + DI

Max Steps

Pressure

100.00 %

Pressure

6.3.4 Neutral zone regulation with inverter

This type of control introduces inverter control to normal neutral zone control, and in order to do this it is essential to set several parameters relating to the inverter device it is intended to use, in addition to enabling its use. The parameters in question are the following:

⋅ Inverter enabling ⋅ Minimum inverter value (MinI) ⋅ Inverter time (IT) ⋅ SpeedUp time ⋅ neutral zone suction setPoint

Regulation varies according to the zone (neutral, on or off) in which the regulator is located.

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Steps

C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Example: 4 compressors w/o inverter Example: 4 compressors with 1 inverter

Steps

Out of range. Switching on

Inverter

Pressure

Out of range. Switching

Pressure

100.00 %

Pressure

In the neutral zone, the inverter undergoes no changes and the compressors are neither switched on or off. In the on zone:

⋅ the inverter is activated as soon as requested. ⋅ the inverter value varies according to the time TI set by the parameter. This represents the

time required for the inverter ramp to change from the minimum value to the maximum when the inverter reaches the maximum value another compressor is requested

⋅ on completion, the inverter value is reset to the minimum value (MinI if other than zero) ⋅ In the case where the on zone is still ongoing, the cycle is restarted once more.

If the on request remains ongoing, one or all of the compressors are switched on and the inverter value finally reaches its maximum. In the off zone:

⋅ as soon as requested, the inverter output is adjusted, according to TI, to the minimum value. ⋅ when the inverter reaches the minimum value, switching off another compressor is required ⋅ having completed the request, in the case where the off zone remains, the inverter value is

restored to the maximum value and the cycle restarted once more. If the switch off request remains ongoing, one or all of the compressors are switched off and the inverter value finally reaches zero. In the case where the parameter MinI has been set, then with each switching on, the inverter will maintain that value as the starting value. Where the speedUp time parameter is greater than zero, the inverter assumes the maximum value for the time in seconds described by said parameter, each time the regulation switches from the neutral zone to the switch on zone.

6.4 Compressor management

The program is capable of managing up to a maximum of 12 compressors (8 if a C-PRO MEGA is used) of equal, or different nominal power, divided over three circuits; in the case of equal nominal power, it is also possible to manage up to 3 increment devices per compressor. The safety device

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

digital inputs and digital outputs for switching on/off and any increment devices, may be associated with each compressor. The compressors are managed by means of a setPoint and differential that can be set by means of a parameter, and by reading a pressure value from the suction probe. Switching on/off is guaranteed by a thermoregulation device and by certain times settings, protecting the various startup operations.

6.4.1 Compressors per circuit

Depending on machine type, there are precise configurations relating to the compressors to be used for each circuit.

Single-circuit

All 12 (8 if using C-PRO MEGA) compressors can be used without limitations. Indeed the circuit is unique.

Dual-circuit and triple-circuit

The sum of the compressors used in the two/three circuits, including the inverters, must not exceed 12 (8 if using C-PRO MEGA); which is the maximum number of compressors managed by the program.

The digital outputs and inputs assigned to the compressors and the corresponding operation alarms are correctly assigned on the basis of the above guidelines.

Please note. By enabling the inverter for compressor regulation, the FIRST compressor (for each circuit) will be the one controlled by the inverter, while any other additional compressors will be hermetic in nature (without increment functionality) and will be controlled by digital outputs using relays.

6.4.2 Compressor status

Each compressor has an associated compressor state, which identifies its relative status during system operation. A compressor can assume 7 different states:

Disabled: the compressor has not been configured for the system. In this state, the user interface displays the symbol “ - ”.

1. Off: the compressor is off. In this state, the user interface displays the message “OFF”.

2. Awaiting switch off: the compressor is about to be switched off, and is currently waiting

protective device waiting times. In this state, the user interface flashes the message

“WOFF”.

3. On: the compressor is on. In this state, the user interface displays the message “ON”.

4. Awaiting switch on: the compressor is about to be switched on, and is currently waiting

protective device waiting times. In this state, the user interface flashes the message “WON”.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

5. Alarm: the compressor is off and in the alarm state. In this state, the user interface displays

the message “ALL”.

6. Manual: the compressor is in manual operational mode. In this state, the user interface

displays the message “MAN”.

In any case, a manually functioning compressor is sensitive to any alarms, in this case, the status will be that of Alarm.

6.4.3 Compressor rotation

Compressor rotation is a procedure that allows the number of operating hours and start-ups for each compressor to be balanced as much as possible. Rotation only involves compressors and not the individual increments. It does not involve any compressors in the alarm state or operating manually, and is capable of dynamically switching on other compressors, should one or more of them switch to the alarm state. In all the rotation types managed, any compressors restored from the alarm state or operating manually, will be inserted at the top of the list of compressors to be switched on. They will have maximum priority with respect to the other compressors, altering the switch on and switch off sequence. Rotation type is set by means of the parameter Compressor Rotation (PC01).

The program can manage 4 types of rotation: FIFO, LIFO, FIFO + time, LIFO + time.

1) FIFO

This follows “First In First Out” logic, i.e. the first compressor switched on will be the first switched off. Initially, this logic might leads to a large difference in operational hours between the various compressors, but after an initial phase, this should more or less balance out.

Example. Switch on : C1 . C2 . C3 . C4 … . C12 Switch off : C1 . C2 . C3 . C4 … . C12

FIFO rotation has one peculiarity. If, for example, the first compressor is switched on and then off, the next compressor to be switched on will be the second. The last compressor switched off will be remembered so as to then switch on the next in sequence, thus avoiding always using the same and so better exploiting all the configured resources.

Example with 4 compressors: Switch on : C1 . Switch off : C1 . Switch on : C2 . C3 . Switch off : C2 . C3 .

Switch on : C4 . C1 . C2 . C3 . Switch off : C4 . C1 . C2 . C3 .

This type of rotation seeks to balance the number of switch on and off operations for the compressors configured.

2) LIFO

This follows “Last In First Out” logic, i.e. the last compressor switched on will be the first to be switched off.

Example. Switch on : C1 . C2 . C3 . C4 … . C12

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Switch off : C12 . … C4 . C3 . C2 . C1

3) FIFO + time of operation

This type of rotation functions by considering the number of operating hours for each compressor. Startup will switch on the compressor with the least operating hours, while shut down will switch off the compressor with the most operating hours. In the case where a selection must be made between compressors with the same number of hours, then a FIFO rotation is implemented, so as to thus guarantee rotation of the configured compressors. The same rules described previously are also valid for FIFO rotation.

Example 1

Switch on : C1(3 hours) . C2(3 hours) . C3(3 hours) . C4(3 hours) Switch off : C1(3 hours) . C2(3 hours) . C3(3 hours) . C4(3 hours)

Example 2

Switch on : C1(1 hour) . C2(3 hours) . C3(3 hours) . C4(5 hours) Switch off : C4(5 hours) . C2(3 hours) . C3(3 hours) . C1(1 hour)

Time based rotation seeks to balance the number of operating hours of the compressors present in the system.

4) LIFO + time of operation

This type of rotation functions by considering the number of operating hours for each compressor. Startup will switch on the compressor with the least operating hours, while shut down will switch off the compressor with the most operating hours. In the case where a selection must be made between compressors with the same number of hours, then a LIFO rotation is implemented, so as to thus guarantee rotation of the configured compressors.

Example 1

Switch on : C1(3 hours) . C2(3 hours) . C3(3 hours) . C4(3 hours) Switch off : C4(3 hours) . C3(3 hours) . C2(3 hours) . C1(3 hours)

Example 2

Switch on : C1(1 hour) . C2(3 hours) . C3(3 hours) . C4(5 hours) Switch off : C4(5 hours) . C3(3 hours) . C2(3 hours) . C1(1 hour) Time based rotation seeks to balance the number of operating hours of the compressors present in the system.

Please note. If the type of rotation is changed with the machine running, it is necessary to switch the machine off and then on in order to avoid malfunctions.

6.4.4 Increment management

Incrementing a compressor means distributing the overall load over several increments, thus improving operation and reducing the number of startup operations, in order to prolong the lifespan of the mechanical device. The program is capable of managing up to 12 incremented compressors (with appropriate limitations), or up to 12 non-incremented compressors.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Increment number

By means of the appropriate parameter (PG04), it is possible to select one, two or three equal powered increments for each of the configured compressors. Each compressor will have the same number of available increments. Possible configurations for the number of increments per compressor depend on what hardware is being used, and the presence, or otherwise, of an expansion unit.

Example 1 - C-PRO GIGA (13 available relays) :

⋅ From 1 to 3 compressors, maximum of 3 increments ⋅ From 1 to 4 compressors, maximum of 2 increments ⋅ From 1 to 6 compressors, maximum of 1 increment ⋅ From 1 to 12 compressors, no increments

Example 2 - C-PRO GIGA + ExpansionPro 1 (26 available relays) :

⋅ From 1 to 6 compressors, maximum of 3 increments ⋅ From 1 to 8 compressors, maximum of 2 increments ⋅ From 1 to 12 compressors, maximum of 1 increment (or none)

Please note. If one of the compressor inverters is selected, it will not be possible to use incremented compressors, i.e. the compressor increment parameter is forced to a value of zero.

Increment logic

If incremented compressors are being used, then it is possible, by means of this parameter (PC03), to select the operational logic of the outputs dedicated to incrementing:

⋅ If set to NC the outputs will be normally energised (closed) and will be opened in order to

request greater power: Copeland type logic.

⋅ If set to NO the outputs will be normally de-energised (open) and will be closed in order to

request greater power: Feeders type logic.

Switching on/off mode

In the case where incremented compressors are being used, this parameter (PC02) allows the increment switch on/off mode to be set. If set to “0”:

Switch on : CppCppCpp. The program favours the complete switching on of individual compressors prior to moving to the following compressor. Switch off : ppCppCppC. The program favours the complete switching off of individual compressors prior to moving to the following compressor.

If set to “1”:

Switch on : CCCpppppp. The program favours first of all switching on all compressors, and only then acting on the increments. Switch off : ppppppCCC. The program favours first of all switching off all steps and only then finally switching off the compressors.

If set to “2”:

Switch on : CppCppCpp. The program favours the complete switching on of individual compressors prior to moving to the following compressor. Switch off : ppppppCCC. The program favours first of all switching off all increments and only then finally switching off the compressors.

If set to “3”:

Switch on : CCCpppppp. The program favours first of all switching on all compressors, and only then acting on the increments.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Switch off : ppCppCppC. The program favours the complete switching off of individual compressors prior to moving to the following compressor.

With CCCpppppp type switching on and ppppppCCC type switching off, the individual step switch on/off logic follows this example (example for 3 compressors): Compressor switch on : C1 . C2 . C3 Increment switch on : p1C1 . p1C2 .p1C3 / p2C1 . p2C2 . p2C3 / p3C1 . p3C2 . p3C3 Increment switch off : p3C3 . p3C2 .p3C3 / p2C3 . p2C2 . p2C1 / p1C3 . p1C2 . p1C1

6.4.5 Protective device timings

All the timings pertaining to compressor management are listed below

Neutral zone timings

These parameters are used to time the switching on and off requests for the various steps provided by the compressors.

Minimum required switch on time - TOnMin Maximum required switch on time - TOnMax Minimum required switch off time - TOffMin Maximum required switch off time - TOffMax

For these parameters, please refer to the description given in section 2.3.2.

Protective device timings

These times are required to protect the mechanical devices from the various startup operations to which they are subjected.

TMinOn – Minimum compressor switch on time (PC04). Once activated, the compressor will remain on for this amount of time, before being able to be switched off.

TMinOff – Minimum compressor switch off time (PC05). Minimum elapsed time since the last switch off before the compressor can be switched on once more.

TOnOn – Minimum same compressor switch on time (PC06). This establishes the minimum time that must elapse before the same compressor can be switched on.

TOnOther – Minimum different compressor switch on time (PC07). This establishes the minimum time that must elapse before the subsequent compressor can be switched on. If greater than zero, this allows avoiding any simultaneous startup operations.

TOffOther – Minimum different compressor switch off time (PC08). This establishes the minimum time that must elapse before the subsequent compressor can be switched off. If greater than zero, this allows avoiding any simultaneous startup operations.

TOnParz – Minimum step switch on time (PC09). This establishes the minimum switch on time between compressor steps.

TOffParz – Minimum step switch off time (PC10). This establishes the minimum switch off time between compressor steps.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

SpeedUp time. If regulation by means of inverter is set, then this parameter, if other than zero, keeps the inverter output at maximum value (100.0%) with each new step switch on request.

6.4.6 Startup delay from reset

By means of the parameter PC69 – TRestart in the Installer ->Compressors menu, it is possible to delay compressor startup each time the controller is reset; for example, following a black-out caused by a power cut.

6.4.7 Safety device inputs

The program envisages the management of 3 safety devices, with relevant alarms, managed by means of 4 possible combinations. Based on the parameter safety device number (PG05) the number of safety devices can be selected, and by means of the parameter safety device type (PH16) the appropriate combination for the application can be selected. The three safety devices managed are as follows:

⋅ Compressor thermal ⋅ Compressor oil differential ⋅ Compressor high/low pressure pressure-switch

The four combinations implemented are described in the following table.

Parameter Type Delay Reset 0 None - -

1 Thermal

Thermal

High/low pressure pressure-switch Immediate

Thermal

Oil differential

Thermal + oil differential + pressureswitch

Configurable Configurabl

e Configurabl e

Configurable Configurabl

- -

The “compressor thermal” safety device manages all 12 compressors and is enabled by setting two parameters: Safety device number: 1 / 2 / 3 Safety device type: 1 / 2 / 3 / 4

The “compressor oil differential” safety device manages up to a maximum of 6 compressors and is enabled by setting two parameters as follows: Safety device number: 2 / 3 Safety device type: 3 / 4

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

The “compressor high/low pressure pressure-switch” safety device manages up to a maximum of 6 compressors and is enabled by setting two parameters as follows: Safety device number: 2 / 3 Safety device type: 2 / 4

To enable the alarms associated with these safety devices, besides setting the above-described parameters, it is also essential to set the positions where the digital inputs relating to the various alarm types will be connected from within the System builder ->Hardware menu. Where there is no desire to set an alarm, simply set the parameter to the value 0.

The number of safety devices that can be used is limited by the number of available digital inputs (depending on the hardware used) and the number of compressors configured.

Please note. If the number of safety devices is greater than or equal to 1, then the “compressor thermal” safety device is always selected.

6.4.8 Inverter configuration

For each inverter used must be selected the digital output position for the command/consent to the inverter start; for the configuration are used the same parameters of the compressors digital outputs, parameters HC01..HC10, HC50, HC60. The inverter is virtually the first compressor of each circuit, then according to the quantity of compressors and the quantity of circuits must be set the correct parameter according to this logic.

- 1 circuit: The inverter (if enabled) is virtually the compressor 1; is necessary to

configure the parameter of the first compressor, then must be always configured the parameter HC01.

- 2 circuits: The inverter of circuit 1 (if enabled) is virtually the compressor 1 (then,

must be configured the parameter HC01), the inverter of circuit 2 (if enabled) is virtually the first compressor after the circuit 1 compressors.

- 3 circuits: The inverter of circuit 1 (if enabled) is virtually the compressor 1 (then,

must be configured the parameter HC01), the inverter of circuit 2 (if enabled) is virtually the first compressor after the circuit 1 compressors, the inverter of circuit 3 (if enabled) is virtually the first compressor after the circuit 1 and 2 compressors.

Note. The parameter PH20 modifies the logic for the inverter consent.

Configuration examples.

1) N°1 circuit (PG01=1), n°2 Compressors (PG11=2), Inverter enabled (PG12=1). A correct

configuration is:

HC01 = 1 -> digital output for the inverter consent

HC02 = 2 -> digital output for the hermetic compressor command HC31 = 1 -> analog output per the inverter command.

2) N°2 circuits (PG01=2), n° 2 compressors for each circuit (PG11=2, PG15=2), both inverter

enabled (PG12=1, PG16=1). A correct configuration is:

HC01 = 1 -> digital output for the circuit 1 inverter consent

HC02 = 2 -> digital output for the circuit 1 hermetic compressor command

HC03 = 3 -> digital output for the circuit 2 inverter consent

HC04 = 4 -> digital output for the circuit 2 hermetic compressor command HC31 = 1 -> analog output for the circuit 1 inverter command HC32 = 2 -> analog output for the circuit 2 inverter command

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

3) N°2 circuit (PG01=2), n°1 circuit 1 compressor, n°2 circuit 2 compressors (PG11=1,

PG15=3), only circuit 2 inverter enabled (PG12=0, PG16=1). A correct configuration is:

HC01 = 1 -> digital output for the circuit 1 first hermetic compressor HC02 = 2 -> digital output per the circuit 2 inverter consent HC03 = 3 -> digital output for the circuit 2 first hermetic compressor command HC04 = 4 -> digital output for the circuit 2 second hermetic compressor command HC31 = 1 -> analog output for the circuit 1 inverter command HC32 = 2 -> analog output for the circuit 2 inverter command

4) N°2 circuits (PG01=2), n°1 circuit 1 compressor, n°3 circuit 2 compressors (PG11=1,

PG15=3), both inverter enabled (PG12=1, PG16=1). A correct configuration is:

HC01 = 1 -> digital output for the circuit 1 inverter consent HC02 = 2 -> digital output for thr circuit 2 inverter condent

HC03 = 3 -> digital output for the circuit 2 first hermetic compressor command HC04 = 4 -> digital output for the circuit 2 second hermetic compressor command HC31 = 1 -> analog output for the circuit 1 inverter command HC32 = 2 -> analog output for the circuit 2 inverter command

6.4.9 Compressors of different nominal power

Management of compressors with different nominal power might be useful in order to have more precise regulation in order to establish the final value at the configured setpoint. In order to use this type of management, it is essential to enable the relevant parameter, enable compressors of different nominal power (PG03) and set the parameters representing the nominal power for each of the compressors to be used in the system. The software calculates the maximum power that can be expressed by the individual nominal power ratings of each of the compressors, and, on the basis of the requests from the regulators, calculates the best combination of compressors in order to provide the requested power. For finer regulation, the resolution within each power step is tripled; this way, with compressors of different nominal power, there are more combinations that can approach the effective power requested by the regulators. With each variation in request, the permutation of compressors is recalculated so as to produce a power output equal to or greater than the request. In the calculation of the permutation, any compressors that are manually disabled, in alarm states or in waiting times, are not considered.

Please note. By enabling this function it is not possible to use incremented compressors or compressors with inverters.

Side band regulation

On the basis of the control parameters, the application will calculate the power necessary to restore the measured pressure/temperature close to the desired setpoint. The requested power will be calculated on the basis of a proportional or proportional + integral regulator, while the power provided will be given by the combination of compressor power outputs closest to exceeding the request.

Neutral zone regulation

On the basis of the zone in which the regulator is located, a new sequence of compressors to be activated is calculated, in particular:

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

⋅ In the neutral zone: the combination remains unchanged. ⋅ In the on zone: the combination of compressors is recalculated in order to guarantee power

greater than that provided by the previous combination.

⋅ In the off zone: the combination of compressors is recalculated in order to guarantee power

less than that provided by the previous combination. The recalculation of combinations is implemented on the basis of the neutral zone time settings, please refer to section 6.4.5.

Example

Considering 3 compressors of different nominal power ratings and a side band proportional regulation device, with the following parameters:

Setpoint = 0.5 bar Proportional band = 2.0 bar Compressor 1 power = 3 kW Compressor 2 power = 5 kW Compressor 3 power = 10 kW

Measured Pressure

(bar)

0.5 - 0

0.6 0.9 X

1.0 4.5 X

1.3 7.2 X

1.6 9.9 X

1.7 10.8 X

2.0 13.5 X

2.3 16.2 X

2.5 18 (max)

Required Power

(kW)

Compressor 1

(3 kW)

Compressor 2

(5 kW)

Compressor 3

(10 kW)

5 8

X X

X X X

Power Delivered

18 (max)

(kW)

10 13 15 18

Below the setpoint, no power is delivered, above the setpoint plus the band, the power delivered is the maximum available.

6.4.10 Suction line loss of load compensation

In certain systems, it might become necessary to reduce the suction setpoint with increased refrigerant capacity, in order to compensate for the increased pressure loss along the suction line. In practice, the services, which should operate at constant evaporation pressure, are forced to operate higher pressures when the cold requirement is greater, and vice versa. This means that, in order to guarantee cold production at the desired temperature, even with loads approaching the nominal values, it is necessary to work with a significantly lower setpoint even at partial loads, when this should not be necessary. Compensation works by introducing a configurable offset that lowers the setpoint, gradually, with each demand for cold steps: it is clear that this function has the aim of increasing system efficiency, allowing the selection of a higher setpoint at low loads. The parameter PH35 enables this function, lowering the setpoint by a compensation factor (PH36 Suction load compensation offset) with each step inserted, and raising the same value with each step released. This function can only be activated with neutral zone regulation.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

pressure

enabling

PC75

6.4.11 Refrigeration power incrementing at high pressures

In order to avoid tripping the condensation high pressure pressure-switch, with consequent blocking of cold production, it is possible to reduce the refrigeration power and consequently the power to be exchanged by the condenser, thus reducing condensation pressure. This reduction is only possible with incrementable circuits (with at least two compressors or with one compressor with incrementing devices).

The parameters pertaining to this function are as follows:

⋅ PC70 = Enable high pressure incrementing ⋅ PC71 = Condensation pressure-switch control setpoint limit (Circuit 1) ⋅ PC72 = Condensation pressure-switch control setpoint limit (Circuit 2) ⋅ PC73 = Condensation pressure-switch control setpoint limit (Circuit 3) ⋅ PC74 = Pressure-switch control differential ⋅ PC75 = Minimum pressure-switch increment maintenance time ⋅ PC76 = Percentage increment value

Increment

Supply

Set

Set-Diff

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

6.5 Condensation regulation

Condensation management envisages control of the supply pressure using the fans: depending on the type of control (side band or neutral zone) and the use, or otherwise, of inverters for fine adjustment, four types of regulation are envisaged.

6.5.1 Side band regulation

Side band control exploits the characteristics of PI (proportional and integral) or P (proportional) regulators to establish when to insert or disengage the fans used, so as to regularise, within the differential band, the switching on and off of the various devices. The purpose of PI regulation is to have no error in full operation. The parameters defining this regulation are as follows:

⋅ Proportional band (PB) ⋅ Side band supply SetPoint (SP) ⋅ Integral time (IT)

The above figure shows the behaviour of band regulation (SP, SP + PB). Depending on the supply pressure value, regulation adds or removes the number of steps required by the fans. Under such regulation, the band is displaced above the setPoint.

It is possible to select whether control will refer to PI or just P regulation, by either setting the parameter for integral action, namely the integration time (Ti), or otherwise. In the specific case where this parameter is set to the value zero, regulation is proportional only, otherwise, it is also integral. Ti corresponds to the time necessary for integral action, assuming constant error, to equalise the proportional action: the speed of this action is proportional to the integration time value. The default parameter is greater than zero, hence, by default, regulation exploits the proportional-integral characteristic.

Like the case with compressors, by means of the parameter PF78 Side band increment overlap, with side band regulation of fans, it is also possible to improve the behaviour of the regulation band.

6.5.2 Neutral zone regulation

⋅ Neutral zone (NZ)

Fans

Max Fans

Supply pressure

SP SP + BP

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

⋅ Side band suction SetPoint (SP)

Outwith said neutral zone, device on or off requests for the configured fans will follow this logic:

⋅ Switch on: when the supply pressure exceeds the setPoint + Neutral Zone threshold ⋅ Switch off: when the pressure drops below the setPoint

In this type of regulation, the neutral zone is displaced to the right of the setPoint.

NZ_TOn NZ_TOff

Neutral zone

SP SP + ZN

Switching on Switching off

Supply

As may be deduced from the figure, regulation envisages setting two times, within which, depending on the zone, the on and off requests for the various steps must be timed. The relevant parameters are as follows:

⋅ Switch-on time (NZ_TOn) ⋅ Switch-off time (NZ_TOff)

In the case where the system is in the switch off zone, each switch off request will have to wait for NZ_TOff seconds prior to being fulfilled. While, in the case of the switch on zone, each switch on request will have to wait NZ_TOn seconds prior to being fulfilled.

6.5.3 Side band regulation with inverter

⋅ Inverter differential (ID) ⋅ Inverter enabling ⋅ Inverter offset with respect to the supply setPoint (OFSI) ⋅ Minimum inverter value (MinI) ⋅ SpeedUp time ⋅ Side band supply SetPoint (Sp)

Inverter

100.00 %

MinI

SP + OFSI SP + OFSI + DI

Pressure

The regulator output will assume different values depending on the value measured by the supply probe. If the value measured by the probe is less than or equal to the value of SP + OFSI, the regulator output assumes the value 0.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

If the value measured by the probe is between the value of SP + OFSI and the value of SP + OFSI + ID, the regulator output will assume a value proportional to the supply probe value. In the case where the supply probe assumes a value greater than or equal to the value of SP + OFSI + ID, the inverter output will assume the maximum value. In the case where the parameter MinI has been set, then with each switching on, the inverter will maintain that value as the starting value. Where the speedUp time parameter is greater than zero, with each startup, the inverter will assume the maximum value for the number of seconds described by this parameter. The range of values the inverter output may assume is comprised of between 0 and 100 percentage points, with two decimal places. By enabling the inverter, for a given number of fans, one step is lost, which will be replaced by regulation with inverter on the first fan. Below is given an example of how to change regulation with the presence of an inverter.

Example: 4 fans without inverter

Example: 4 fans with 1 inverter

Steps

Max Steps

Steps

Max Steps

Inverter

SP SP + BP

Pressure

100.00 %

SP SP + BP

Pressure

MinI

SP + OFSI SP + OFSI + DI

6.5.4 Neutral zone regulation with inverter

⋅ Inverter enabling ⋅ Minimum inverter value (MinI) ⋅ Inverter time (IT) ⋅ SpeedUp time ⋅ Neutral zone supply SetPoint

Regulation varies according to the zone (neutral, on or off) in which the regulator is located. In the neutral zone, the inverter undergoes no changes and the fans are neither switched on or off. In the on zone:

⋅ the inverter is activated as soon as requested. ⋅ the inverter value varies according to the time TI set by the parameter. This represents the

time required for the inverter ramp to change from the minimum value to the maximum.

Pressure

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

⋅ when the inverter reaches the maximum value one of the other fans is requested.

In the case where the on zone remains ongoing one or all the fans are switched on and the inverter value remains at maximum. In the off zone:

⋅ as soon as requested, the inverter output is adjusted, according to TI, to the minimum value. ⋅ when the inverter reaches the minimum value, switching off another fan is requested

If the switch off request remains ongoing, one or all of the fans are switched off and the inverter value remains at zero. In the case where the parameter MinI has been set, then with each switching on, the inverter will maintain that value as the starting value. Where the speedUp time parameter is greater than zero, the inverter assumes the maximum value for the time in seconds described by said parameter, each time the regulation switches from the neutral zone to the switch on zone. Below is an example of a graph (for the switch on zone) of how regulation varies depending on whether the fan is configured with an inverter or otherwise.

Example: 4 fans with 1 inverter

Pressure

100.00 %

Pressure

Out o frange. Switching

Steps

Example: 4 fans without inverter

Out o frange. Switching on

Steps

Inverter

Pressure

6.5.5 Unique condensation (dual/triple circuits only)

Unique condensation allows the fan process to be executed using a single circuit. By setting the parameter enable unique condensation (PG30), the number of fan circuits is forced to one, while the number of circuits selected for compressors remains unchanged. In any case, in the case where this function is selected, the maximum number of fans that can be used remains the maximum number of fans per circuit. Unique condensation will disable all the features (alarms, fans, inverters, …) pertaining to the second and third fan management circuits.

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6.6 Fan management

The program is capable of managing up to a maximum of 12 fans (8 if using C-PRO MEGA) divided according to circuit. A digital input for safety devices and a digital output for switching on/off may be associated with each fan. The number of fans that can be used is further limited by the number of compressors (and stepped compressors), i.e. the number of free digital outputs remaining after the compressors have been configured. By setting the relevant parameter, it is possible to use a unique condensation device, i.e. achieved by means of a single circuit. The fans are managed by means of a set Point and differential that can be set by means of a parameter, and by reading a pressure value from the supply probe. Switching on/off is guaranteed by a thermoregulation block and by certain time settings, protecting the various startup operations.

6.6.1 Fans per circuit

Depending on machine type, there are precise configurations relating to the fans to be used for each circuit.

Single-circuit

All 12 (8 if using C-PRO MEGA) fans can be used without limitations. Indeed the circuit is unique.

Dual-circuit and triple-circuit

The sum of the fans used in the two/three circuits, including the inverters, must not exceed 12 (8 if using C-PRO MEGA); which is the maximum number of fans managed by the program.

The digital outputs and inputs assigned to the fans and the corresponding operation alarms are correctly assigned on the basis of the above guidelines.

In the case where it is decided to use condensation on a single circuit (Unique condensation parameter) the only available and configurable fans will be those of the first circuit.

Please note. By enabling the inverter for fan regulation, the FIRST fan (for each circuit) will be the one controlled by the inverter, while any other additional fans will be hermetic in nature and will be controlled by digital outputs using relays.

6.6.2 Fan status

Each fan has an associated fan state, which identifies its relative status during system operation. A fan can assume 7 different states:

1. Disabled: the fan has not been configured for the system. In this state, the user interface

displays the symbol “ - ”.

2. Off: the fan is off. In this state, the user interface displays the message “OFF”.

3. Awaiting switch off: the fan is about to be switched off, and is currently waiting protective

device waiting times. In this state, the user interface flashes the message “WOFF”.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

4. On: the fan is on. In this state, the user interface displays the message “ON”.

5. Awaiting switch on: the fan is about to be switched on, and is currently waiting protective

device waiting times. In this state, the user interface flashes the message “WON”.

6. Alarm: the fan is off and in the alarm state. In this state, the user interface displays the

message “ALL”.

7. Manual: the fan is in manual operational mode. In this state, the user interface displays the

message “MAN”.

In any case, a manually functioning fan is sensitive to any alarms, in this case, the status will be that of Alarm.

6.6.3 Fan rotation

Fan rotation is a procedure that allows the number of operating hours and start-ups for each device to be balanced as much as possible. Rotation does not involve any fans that are in alarm or manual operation states, and is capable of dynamically switching on others should one or more be switched to the alarm state. In all the rotation types managed, any compressors restored from the alarm state or operating manually, will be inserted at the top of the list of compressors to be switched on. They will have maximum priority with respect to the other compressors, altering the switch on and switch off sequence. Rotation type is set by means of the parameter Fan Rotation (PF01).

The program can manage 4 types of rotation: FIFO, LIFO, FIFO + time, LIFO + time.

1) FIFO

This follows “First In First Out” logic, i.e. the first fan switched on will be the first switched off. Initially, this logic might leads to a large difference in operational hours between the various fans, but after an initial phase, this should more or less balance out.

Example.

Switch on : F1 . F2 . F3 . F4 … . F12 Switch off : F1 . F2 . F3 . F4 … . F12

FIFO rotation has one peculiarity. If, for example, the first fan is switched on and then off, the next fan to be switched on will be the second. The last fan switched off will be remembered so as to then switch on the next in sequence, thus avoiding always using the same and so better exploiting all the configured resources. Example with 4 fans: Switch on : F1 . Switch off : F1 . Switch on : F2 . F3 . Switch off : F2 . F3 .

Switch on : F4 . F1 . F2 . F3 . Switch off : F4 . F1 . F2 . F3 .

This type of rotation seeks to balance the number of switch on and off operations for the fans configured.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

2) LIFO

This follows “Last In First Out” logic, i.e. the last fan switched on will be the first to be switched off.

Example.

Switch on : F1 . F2 . F3 . F4 … . F12 Switch off : F12 . … F4 . F3 . F2 . F1

3) FIFO + time of operation

This type of rotation functions by considering the number of operating hours for each fan. Startup will switch on the fan with the least operating hours, while shut down will switch off the fan with the most operating hours. In the case where a selection must be made between fans with the same number of hours, then a FIFO rotation is implemented, so as to thus guarantee rotation of the configured fans. The same rules described previously are also valid for FIFO rotation.

Example 1

Switch on : F1(3 hours) . F2(3 hours) . F3(3 hours) . F4(3 hours) Switch off : F1(3 hours) . F2(3 hours) . F3(3 hours) . F4(3 hours)

Example 2

Switch on : F1(1 hour) . F2(3 hours) . F3(3 hours) . F4(5 hours) Switch off : F4(5 hours) . F2(3 hours) . F3(3 hours) . F1(1 hour)

Time based rotation seeks to balance the number of operating hours of the fans present in the system.

4) LIFO + time of operation

This rotation favours comparing the operating times of the various fans. During startup, the fan with the least operating hours will be favoured, while shut down will favour the fan with the most operating hours. In the case where a selection must be made between fans with the same number of hours, then a LIFO rotation is implemented, so as to thus guarantee rotation of the configured fans. The same rules described previously are also valid for LIFO rotation.

Example 1

Switch on : F1(3 hours) . F2(3 hours) . F3(3 hours) . F4(3 hours) Switch off : F4(3 hours) . F3(3 hours) . F2(3 hours) . F1(3 hours)

Example 2

Switch on : F1(1 hour) . F2(3 hours) . F3(3 hours) . F4(5 hours) Switch off : F4(5 hours) . F3(3 hours) . F2(3 hours) . F1(1 hour)

Time based rotation seeks to balance the number of operating hours of the fans present in the system.

6.6.4 Protective device timings

All the timings pertaining to compressor management are listed below

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Neutral zone timings

These parameters are used to time the switching on and off requests for the various condensation devices.

Minimum switch on/off request time - TOn/Off

For these parameters, please refer to the description given in section 2.5.2.

Protective device timings

These times are required to protect the fans from the various startup operations to which they are subjected.

TOnOther – Minimum different fan switch on time (PF07). This establishes the minimum time that must elapse before the subsequent fan can be switched on. If greater than zero, this allows avoiding any simultaneous startup operations.

TOffOther – Minimum different fan switch off time (PF08). This establishes the minimum time that must elapse before the subsequent fan can be switched off. If greater than zero, this allows avoiding any simultaneous startup operations.

SpeedUp time. If regulation by means of inverter is set, then this parameter, if other than zero, keeps the inverter output at maximum value (100.0%) each time another fan switch on is requested.

6.6.5 Safety device inputs

The program envisages the management of a single “fan thermal” safety device for each of the fans configured within the application. Enabling or disabling this characteristic is managed by the parameter enable fan safety device (PG08). In order to enable the “fan thermal” alarms, besides setting the relevant parameter, it is also essential to set the positions where the digital inputs pertaining to the various selected fans will be connected, from within the System builder -> Hardware menu. Where there is no desire to set an alarm, simply set the parameter to the value zero.

6.6.6 Inverter configuration

For each inverter used must be selected a position of the digital output for the command/consent to the inverter start; for the configuration are used the same parameters of the fans digital ouputs, parameters HF01..HF12. The inverter is virtually the first fan of each circuit, then, according to the quantity of fans and the quantity of circuit must be set the correct parameter, according to this logic.

- 1 circuit: The inverter (if enabled) is virtually the fan 1; is necessary to configure the

first fan parameter, then must be configured always the parameter HF01.

- 2 circuits: The circuit 1 inverter (if enabled) is virtually the fan 1 (then, must be set

the parameter HF01), the circuit 2 inverter (if enabled) is virtually the first fan after the circuit 1 fans

- 3 circuits: The circuit 1 inverter (if enabled) is virtually the fan 1 (then, must be set

the parameter HF01), the circuit 2 inverter (if enabled) is virtually the first fan after the circuit 1 fans, the inverter of circuit 3 (if enabled) is virtually the first fan after the circuit 1 and circuit 2 fans.

The selection of working modality and function setup of the parameters for the fans inverters is the same for the compressors one, but are used the parameters PH21, HFxx (look at paragraph 6.4.8)

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6.7 Miscellaneous controls

6.7.1 Inverter configuration (compressors/fans)

If selected, the inverter is always the first compressor in each circuit:

⋅ 1 Circuit: the inverter (if enabled) is compressor 1 ⋅ 2 Circuits: the circuit 1 inverter (if enabled) is compressor 1, and the circuit 2 inverter (if

enabled) is the first compressor configured on the second circuit

⋅ 3 Circuits: the circuit 1 inverter (if enabled) is compressor 1, the circuit 2 inverter (if

enabled) is the first compressor configured on the second circuit, and the circuit 3 inverter

(if enabled) is the first compressor configured on the third circuit

The inverter is included in the number of compressors or fans configured by parameter for each circuit.

Example 1

1 Circuit Compressor inverters YES 5 Compressors 0 Steps Fan inverters NO 3 Fans

Example 1 configuration parameters:

CircuitNumber 1 Enable Circuit 1 Compressor Inverter YES Number of Compressors for Circuit 1 6 Number of Compressor Steps 0 Enable Circuit 1 Fan Inverter NO Number of Fans for Circuit 1 3

Depending on the single/dual/triple-circuit version, there are limitations on the use of inverters:

Single-circuit:

⋅ One compressor inverter (Analogue output 1) ⋅ One fan inverter (Analogue output 3)

Dual-circuit:

⋅ Two compressor inverters (Analogue outputs 1 - 2) ⋅ Two fan inverters (Analogue outputs 3 -4)

Triple-circuit:

⋅ Three compressor inverters (Analogue outputs 1 – 2 - 3) or ⋅ Three fan inverters (Analogue outputs 1 – 2 - 3) ⋅ Three compressor inverters (Analogue outputs 1 - 2 - 3) and one fan inverter (Analogue

output 4) in the case of unique condensation

In the case of the triple-circuit version, the inverters are exclusive: it is only possible to select those pertaining to compressors, or those pertaining to fans. Management of a combination of both types

Example 2

1 Circuit Compressor inverters NO 5 Compressors 2 Steps Fan inverters NO 3 Fans

Example 2 configuration parameters:

CircuitNumber 1 Enable Circuit 1 Compressor Inverter NO Number of Compressors for Circuit 1 5 Number of Compressor Steps 2 Enable Circuit 1 Fan Inverter NO Number of Fans for Circuit 1 3

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

is not possible. To correctly configure this feature, simply enable at least one compressor/fan inverter, depending on the type enabled, the other type will be automatically excluded from the analogue outputs. The only case where it is possible to use both compressor inverters and fan inverters is when the parameter unique condensation (PG30) is set; in this case, the last analogue output (AO04) may be used as the sole fan inverter.

Note 1. If a compressor inverter is selected, it is not possible to use incremented compressors, and vice versa.

Note 2. If a compressor inverter is selected, it is not possible to use compressors with different nominal power ratings, and vice versa.

6.7.2 Compressor time bands

By means of the parameter enable compressor time bands (PT00) it is possible to enable the time band function. The program provides up to four different bands with related offsets (different for each circuit) to be summed up to the main suction setpoint. Depending on the time band, on the basis of the current time, the program will automatically sum the circuit offsets to the suction setpoint, outwith the selected bands, the setpoint will remain at the value set by the parameter.

Time band configuration is based on 4 parameters (different for each circuit) for the setpoint offsets and an additional four parameters (general) for the time band settings:

⋅ Time band 1 start - Circuit band 1 offset (1,2,3) ⋅ Time band 2 start - Circuit band 2 offset (1,2,3) ⋅ Time band 3 start - Circuit band 3 offset (1,2,3) ⋅ Time band 4 start - Circuit band 4 offset (1,2,3)

Hence, the time bands will be defined thus:

1. Time band 1 start ÷ Time band 2 start

2. Time band 2 start ÷ Time band 3 start

3. Time band 3 start ÷ Time band 4 start

4. Time band 4 start ÷ Time band 1 start

Example 1. Four time bands. Assuming a suction setpoint = 1.0 bar

Band start Offset Setpoint Description

02:00:00 +0.3 1.3 bar From 02:00:00 to 07:15:00 07:15:00 +0.1 1.1 bar From 07:15:00 to 15:13:00 15:30:00 -0.5 0.5 bar From 15:30:00 to 23:00:00 23:00:00 -0.2 0.8 bar From 23:00:00 to 02:00:00

Example 2. Two time bands. Assuming a suction setpoint = 1.0 bar

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

Band start Offset Setpoint Description

02:00:00 +0.3 1.3 bar From 02:00:00 to 07:15:00 07:15:00 +0.1 1.1 bar From 07:15:00 to 02:00:00 07:15:00 0 1.0 bar 07:15:00 0 1.0 bar -

During an ERTC alarm (clock alarm), the time band function is automatically disabled and LED L2 on the display stays on, until the alarm is reset.

When the clock is within a time band, i.e. when the main suction setpoint is altered by the related band offset, LED L2:

⋅ Flashes rapidly if there is an ERTC clock alarm. ⋅ Flashes slowly if only one of the compressor and fan setpoints is altered. ⋅ Remains on if both setpoints are altered by the time bands. ⋅ Remains off if there is no condition.

To enter time band management, press and hold display key K2 for approx. 2 seconds.

6.7.3 Fan time bands

By means of the parameter enable fan time bands (PT50) it is possible to enable the time band function. The program provides up to four different bands with related offsets (different for each circuit) to be summed up to the main supply setpoint. Depending on the time band, on the basis of the current time, the program will automatically sum the circuit offsets to the supply setpoint, outwith the selected bands, the setpoint will remain at the value set by the parameter.

Time band configuration is based on 4 parameters (different for each circuit) for the setpoint offsets and an additional four parameters (general) for the time band settings:

Hence, the time bands will be defined thus:

1. Time band 1 start ÷ Time band 2 start

2. Time band 2 start ÷ Time band 3 start

3. Time band 3 start ÷ Time band 4 start

4. Time band 4 start ÷ Time band 1 start

Where less than the four envisaged bands are set, in order to guarantee correct management operation, it is essential to set the remaining band start parameters to the value of the last set band, and obviously set the relevant offset to zero. Management is the same as for compressor time bands, please refer to the previous section for any further clarification.

When the clock is within a time band, i.e. when the main supply setpoint is altered by the related band offset, LED L2:

⋅ Flashes rapidly if there is an ERTC clock alarm.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

⋅ Flashes slowly if only one of the compressor and fan setpoints is altered. ⋅ Remains on if both setpoints are altered by the time bands. ⋅ Remains off if there is no condition.

To enter time band management, press and hold display key K2 for approx. 2 seconds.

6.7.4 Digital input setpoint alteration

For both compressors and fans, the program envisages the possibility of managing the compressor DI secondary setPoint offset and fan DI secondary setPoint offset parameters, which, depending on

the digital input status (different for compressors and fans) sum an offset to the main setpoint in order to allow variation. It is possible to set the digital input logic by altering the parameter Other DI logic (PH19, itself a parameter relating to the digital input on/off logic). To set this function, it is necessary to configure the parameter DI enabling secondary setpoint (PH25) and set the position where the digital input relating to the compressors and relating to fans will be connected. If this value is not set, the function will remain disabled.

6.7.5 Supervisor setpoint alteration

For both compressors and fans, the program envisages the possibility of managing the compressor SUP secondary setPoint offset and fan SUP secondary setPoint offset parameters, which, depending

on the state of a variable set by the supervision protocol (different for compressors and fans) sum the adjusted offset to the main setpoint in order to allow variation. To set this function it is necessary to configure the parameter supervisor secondary setpoint enabling (PH26) and the status enable by means of the exported variable. If this value is not set, the function will remain disabled.

6.7.6 Manual operation

The program allows setting a manual compressor and fan function. In this state, devices do not participate in rotations nor in the calculation of thermoregulation, however, they are sensitive to any alarms. Manual operation of devices is useful when functional tests must be conducted on the machine, in order to test the integrity and correct operation of the mechanical components.

Compressors

Manual or other operation of the compressors is guaranteed by the parameter compressor enable:

⋅ If set to the value “A” it defines the normal behaviour of the device ⋅ If set to the value “M” it disables the compressor and switches it to manual operation.

A manually functioning compressor does not participate in regulations, and may be forced into the number of steps it is capable of providing (even over its increments, where configured) by setting the parameter compressor forcing (found in the Service -> Compressor forcing menu). The number of steps a manually functioning compressor can provide is limited to the number of increments that have been set during machine configuration. As already mentioned, the compressor is, in any case, sensitive to alarms and the relevant consequences.

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To restore the compressor to normal use, it is necessary to reset the parameter compressor enable to the value “A” (Automatic), otherwise, the compressor in question will continue to operate in manual mode, not fulfilling the switch on and/or off requests calculated by the selected regulation.

Fans

Manual or other operation of the fans is guaranteed by the parameter fan enable:

⋅ If set to the value “A” it defines the normal behaviour of the device ⋅ If set to the value “M” it disables the fan and switches it to manual operation.

A manually functioning fan does not participate in regulations, and may be forced into switching on/off by setting the property fan forcing (present in the Service -> Fan forcing menu). As already mentioned, the fan is, in any case, sensitive to alarms and the relevant consequences. To restore the fan to normal use, it is necessary to once more restore the parameter fan enable to the value “A” (Automatic), otherwise, the fan in question will continue to operate in manual mode, not fulfilling the switch on and/or off requests calculated by the selected regulation.

Inverters

In the case where it is desired to manually force an inverter, the procedure is slightly different from that for normal compressors or fans. If selected, the inverter is virtually the first compressor for each circuit, thus before being able to correctly execute the procedure, it is necessary to set the correct compressor to manual, depending on how the system has been configured.

Once manual enabling has been correctly set, it is possible to force, with a value of between 0.0% and 100.0%, the inverter for each circuit by means of the parameters:

⋅ circuit 1, circuit 2, circuit 3 compressor inverter forcing ⋅ circuit 1, circuit 2, circuit 3 fan inverter forcing

present in the service menu.

Management and the forcing procedure for fan inverters is the same as that for compressors.

6.7.7 Floating condensation management

This allows modification of the fan operating setpoint on the basis of the external temperature. To enable this function, it is necessary to set (from the installer -> Miscellaneous menu) the parameters:

⋅ enable external temperature probe (PH24) ⋅ enable floating condensation (PF71) ⋅ Temperature offset (PF72): condensation temperature offset (associated with the type of

condenser module used)

⋅ set floating condensation Min (PF73): minimum condensation value, guaranteeing correct

lubrication

⋅ set floating condensation Max (PF74): maximum condensation value, in order to avoid

modulations with high external temperatures The new setpoint will be given by the external temperature added to the parameter delta temperature. The values of this new set, converted into pressure, are in any case limited by the range of variation for the condensation setpoint.

Please note. By enabling this function, the condensation setpoint parameters of the individual circuits no longer have any effect on condensation regulation, indeed the setpoint used will be a function of delta T and the external temperature.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

6.7.8 Temperature probes

The application is capable of managing up to two auxiliary temperature probes: environment probe and external probe.

In order to take advantage of these two temperature transducers, it is necessary to enable (from the installer -> Miscellaneous menu) the parameters:

⋅ enable environment temperature probe (PH23) ⋅ enable external temperature probe (PH24)

Each of the two probes is associated with a probe alarm, which trips should the probe be disconnected or damaged, and enabling of this alarm is associated with the enabling parameter for the relevant probe; enabling the probes also enables the related alarms. If these are not enabled, a series of dots appears on the displays.

6.7.9 Last maintenance date

In the service -> Operation menu there is a page offering the option to store the date of the most recent system maintenance. By pressing “Update” the old date will be automatically set to the current date, thus also updating the parameter PM90 representing precisely the last maintenance date.

6.7.10 Restore default parameters

By means of the “Restore parameters” procedure, it is possible to restore all system parameters to the default values. This function may be simply activated by setting the value of the specific parameter (PH15), where, by setting it to “Yes” the system will automatically reset all parameters. The parameter will briefly assume the value “Yes” and then return to the value “No”, after this change of state, the parameter reset procedure is complete. The procedure can only be activated with the machine switched off.

Following this operation, it is necessary switch the machine off and then on again in order to avoid malfunctions, in that inconsistencies in the calculation algorithms might occur.

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C-PRO MEGA RACK & C-PRO GIGA RACK APPLICATION MANUAL

7 DIAGNOSTICS

The application is capable of managing a series of alarms relating to the system compressors, fans, circuits and functions. Based on the various alarm types, it is possible to configure resets (manual or automatic), possible signalling delays and the actions to be executed in specific cases. When several alarms are active, display LED L0 flashes (even with the machine off) and the buzzer sounds if the machine is switched on. In order to view the alarm pages, press and hold key K0 for approx. 2 seconds. To scroll through the active alarms, simply press the ENTER key, the alarms are shown in order of priority, just as they are listed in the alarm table in section 7.2. All alarms are monitored, even with the machine switched off, hence, even with the machine off, by using the K0 key, it is possible to view the active alarms, and LED L0 flashes. The buzzer (if parameter enabled) only sounds when the machine is on.

The alarms may only be managed by one of the two interfaces, exclusively. Once the alarm pages have been entered, the controller only accepts commands from the device that initiated the procedure. In any case, the pages are shown simultaneously on both displays. To inform the user that alarm pages are being displayed on one of the two interfaces, the L0 LED flashes rapidly. To exit from management of one view and move to another, exit from the alarm pages: press the ESC key, or this will occur after 60 seconds if no other keys have been pressed. Exiting an alarm page by pressing the ESC key, or by waiting 60 seconds for timeout, returns the user to the main page of the application.

All digital inputs relating to alarms are managed by the parameter Alarm DI logic (PH17) which assumes the following significance:

⋅ If set to “NO”, the inputs will normally be de-energised (open): N.O. logic ⋅ If set to “NC”, the inputs will normally be energised (closed): N.C. logic

7.1 Manual and automatic alarms

The program is capable of managing two types of alarms, those that are manually reset, and those that are automatically reset. Certain alarms have the possibility for setting, by means of a parameter (alarm reset), the type of reset best suited to the user’s needs.

7.1.1 Manual alarms

In the case where a manual alarm occurs:

⋅ LED L0 begins flashing ⋅ the buzzer begins to sound at a high frequency (if the machine is on)

Pressing and holding the K0 key for approx. 2 seconds enters the description page for the active alarm. Once the conditions responsible for causing the alarm are resolved it is possible to manually reset the alarm. To do this:

⋅ go to the page for the alarm to be reset ⋅ press and hold the ENTER key for approx. 2 seconds.

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EVCO c-pro mega RACK User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual