EVCO c-pro nano RACK User Manual
PROGRAMMABLE CONTROLLERS FOR
MONO AND BI-CIRCUIT
COMPRESSOR PACKS
UP TO 4 COMPRESSORS
APPLICATION MANUAL
CODE 144RACKNUE05
C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
Important
Read carefully these instructions before installation and use and follow all the directions for the installation and for the electrical
connection; keep these instructions together with the tool for future consultation.
The tool must be disposed of according to the local regulation regarding collection of electrical and electronic equipments.
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C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
Contents
1 GENERALITIES............................................................................................................................................ 5
1.1
Description ............................................................................................................................................. 5
2 Applications.................................................................................................................................................... 7
2.1
Application 1a: use of C-PRO NANO RACK (monocircuit compressor pack) ................................... 8
2.2
Application 1b: use of C-PRO MICRO RACK (monocircuit compressor pack) .................................. 9
2.3
Application 2a: use of C-PRO NANO RACK with expansion of I/O C-PRO EXP MICRO (bi-circuit
compressor pack with single condensation).................................................................................................... 10
2.4
Application 2b: use of C-PRO MICRO RACK with expansion of I/O C-PRO EXP MICRO (bi-circuit
compressor pack with single condensation)..................................................................................................... 11
2.5
Application 3a: use of C-PRO NANO RACK with expansion of I/O C-PRO EXP MICRO (bi-circuit
compressor pack with separated condensation). ............................................................................................ 12
2.6
Application 3b: use of C-PRO MICRO RACK with expansion of I/O C-PRO EXP MICRO (bi-
circuit compressor pack with separated condensation). ................................................................................. 13
2.7
Electrical connections of control units................................................................................................. 14
2.8
C-PRO EXP MICRO electrical connection ......................................................................................... 17
3 Elements and fittings network...................................................................................................................... 19
3.1
Example for C-PRO NANO RACK..................................................................................................... 19
3.2
Example for built-in versions of C-PRO MICRO RACK.................................................................... 20
3.3
Example for blind versions of C-PRO MICRO RACK ...................................................................... 21
4 USER INTERFACE..................................................................................................................................... 22
4.1
Display and keyboard........................................................................................................................... 22
4.2
Pages list............................................................................................................................................... 26
4.3
Conditioned visibility........................................................................................................................... 29
5 Configuration parameters............................................................................................................................. 31
5.1
Parameters configuration list................................................................................................................ 32
6 ADJUSTMENTS.......................................................................................................................................... 46
6.1
Configuration of the machine............................................................................................................... 46
6.2
Status of the machine and of the single circuits................................................................................... 47
6.3
Adjustment of the compressors............................................................................................................ 48
6.3.1 Sideband adjustment....................................................................................................................... 48
6.3.2 Neutral zone adjustment................................................................................................................. 49
6.3.3 Sideband adjustment with inverter................................................................................................. 50
6.3.4 Neutral zone adjustment with inverter ........................................................................................... 51
6.4
Management of the compressors.......................................................................................................... 52
6.4.1 Rotation of the compressors........................................................................................................... 52
6.4.2 Management of throttlings ............................................................................................................. 54
6.4.3 Protection timings........................................................................................................................... 55
6.4.4 Safety inputs................................................................................................................................... 55
6.4.5 Inverter configuration..................................................................................................................... 56
6.4.6 Compressors with different power ................................................................................................. 57
6.4.7 Compensation for load losses on the suction line .......................................................................... 58
6.4.8 Throttling of the refrigerating power at high pressures.................................................................. 58
6.5
Adjustment of condensation................................................................................................................. 60
6.5.1 Sideband adjustment....................................................................................................................... 60
6.5.2 Neutral zone adjustment................................................................................................................. 61
6.5.3 Sideband adjustment with inverter................................................................................................. 61
6.5.4 Neutral zone adjustment with inverter ........................................................................................... 62
6.5.5 Single condensation (only bi-circuit) ............................................................................................. 63
6.6
Management of the fans ....................................................................................................................... 63
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C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
6.6.1 Rotation of the fans ........................................................................................................................ 63
6.6.2 Fan timings..................................................................................................................................... 64
6.6.3 Safety inputs................................................................................................................................... 65
6.6.4 Inverter configuration..................................................................................................................... 65
6.7
Various management issues ................................................................................................................. 66
6.7.1 Digital input or supervisor setpoint variation................................................................................. 66
6.7.2 Manual function.............................................................................................................................. 66
6.7.3 Floating condensation management............................................................................................... 67
6.7.4 Temperature probes........................................................................................................................ 67
6.7.5 Restoration of default parameters................................................................................................... 68
6.7.6 Programming key ........................................................................................................................... 68
7 DIAGNOSTICS ........................................................................................................................................... 69
7.1
Manual and automatic alarms............................................................................................................... 69
7.2
Alarms Table........................................................................................................................................ 70
7.3
Alarm relays ......................................................................................................................................... 72
8 List of the MODBUS variables.................................................................................................................... 73
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C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
1 GENERALITIES
1.1 Description
This application uses control units of C-PRO NANO and C-PRO MICRO line for management of a refrigerator
compressor pack composed by one or two circuits with maximum number of 4 compressors.
The function required to a refrigerator compressor pack’s control system is the management of the compressors
for the maintenance of the evaporation pressure up to the wished value; in deeper words it must assure the
production of cold, for example for foodstuffs’ conservation.
Therefore it is required the continuous generation of cold through an action that must take place without
interruptions, unless for normal maintenance operations.C-PRO NANO and C-PRO MICRO control units are
extremely careful to these aspects managing all the circuit’s parts with the best possible efficiency (better
efficiency output = less operation costs), handling the mechanical tools in the best way, for breakdown
reduction (for example less trimming = less mechanical stress). For the control of pressure or temperature it is
possible to choose between two setting types:
⋅ Sideband
⋅ Neutral zone
For each circuit the safeties are managed in order to signalize promptly the possible malfunctions. To each
safety it is associated a particular alarm that will be signalized in order to identify the type of breakdown. Some
alarms will consequently block the mechanical devices in order to avoid further breakdown. Other alarms, as a
result, will only signalize without taking any measure over the machine’s operation.
The application has a navigable user inteface whereby it is possible defining and setting all the configuration
and operation parameters divided into four main levels:
⋅ User
⋅ Maintenance operative
⋅ Installer
⋅ Contructor
Each level is protected by a different password. On contructor’s level the user inteface displays a range of
editable configuration templates (wizard) that allow to set easily the number of circuits, compressors, fans and
the respective safeties that we want to use in order to protect the mechanical devices.
There is always a TTL output for the connection to RICS supervision system (through aTTL/RS-485 user
interface) or to other BMS.
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C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
C-PRO NANO RACK
C-PRO MICRO RACK
Built-in version
C-PRO MICRO RACK
Blind version
C-PRO MICRO RACK
Open version
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C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
2 Applications
It is possible connecting to the control unit a 6 relays expansion through IntraBus proprietor protocol
It is supposed the management of three types of compressor pack:
1) Application 1: C-PRO NANO RACK or C-PRO MICRO RACK (for monocircuit compressor
packs)
Total of digital outputs = 6
Total of digital inputs = 5
Total of analogue inputs = 4
Total of analogue outputs = 2 PWM (+2 optional ones).
2) Application 2: C-PRO NANO RACK or C-PRO MICRO RACK + C-PRO EXP MICRO
expansion (for bi-circuit compressor packs with single condensation)
Total of digital outputs = 12
Total of digital inputs = 10
Total of analogue inputs = 8
Total of analogue outputs = 2 PWM (+2 optional ones) .
3) Application 3: C-PRO NANO RACK or C-PRO MICRO RACK + C-PRO EXP MICRO
expansion (for bi-circuit compressor packs with separated condensation)
Total of digital outputs = 12
Total of digital inputs = 10
Total of analogue inputs = 8
Total of analogue outputs = 2 PWM (+2 optional ones).
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C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
2.1 Application 1a: use of C-PRO NANO RACK (monocircuit
compressor pack)
According to default setting, C-PRO NANO RACK is configured to manage monocircuit refrigerator
compressor packs; the uses shown in the drawing below just refer to default settings.
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C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
2.2 Application 1b: use of C-PRO MICRO RACK (monocircuit
compressor pack)
According to default setting, C-PRO MICRO RACK is configured to manage monocircuit refrigerator
compressor packs; the uses shown in the drawing below just refer to default settings.
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C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
2.3 Application 2a: use of C-PRO NANO RACK with expansion of I/O
C-PRO EXP MICRO (bi-circuit compressor pack with single
condensation)
According to default setting, C-PRO NANO RACK is configured to manage monocircuit compressor packs;
the uses shown in the drawing below refer to an example of bi-circuit compressor pack with single
condensation.
The power supplies of C-PRO NANO RACK and of C-PRO EXP MICRO must be galvanically insulated
among them
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C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
2.4 Application 2b: use of C-PRO MICRO RACK with expansion of
I/O C-PRO EXP MICRO (bi-circuit compressor pack with single
condensation).
According to default setting, C-PRO MICRO RACK is configured to manage monocircuit compressor packs ;
the uses shown in the drawing below refer to an example of bi-circuit compressor pack with single
condensation.
The power supplies of C-PRO MICRO RACK and of C-PRO EXP MICRO must be galvanically
insulated among them.
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C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
2.5 Application 3a: use of C-PRO NANO RACK with expansion of I/O
C-PRO EXP MICRO (bi-circuit compressor pack with separated
condensation).
According to default setting, C-PRO MICRO NANO is configured to manage monocircuit compressor packs ;
the uses shown in the drawing below refer to an example of bi-circuit compressor pack with separated
condensation.
The power supplies of C-PRO NANO RACK and of C-PRO EXP MICRO must be galvanically insulated
among them.
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C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
2.6 Application 3b: use of C-PRO MICRO RACK with expansion of I/O
C-PRO EXP MICRO (bi-circuit compressor pack with separated
condensation).
According to default setting, C-PRO MICRO RACK is configured to manage monocircuit compressor packs ;
the uses shown in the drawing below refer to an example of bi-circuit compressor pack with separated
condensation.
The power supplies of C-PRO MICRO RACK and of C-PRO EXP MICRO must be galvanically
insulated among them.
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C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
2.7 Electrical connections of control units
Here follows the layout of control units connection with tables concerning the inputs and outputs meaning.
C-PRO NANO RACK connections
C-PRO MICRO RACK connections
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C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
Connector 1 of C-PRO NANO RACK: Connection for relay outputs ; in brackets the use
that is associated according to default setting
Conn. Abbreviation Description
C1-1 DO4 Normally open contact relay n.4 (fan 2)
C1-2 D03 Normally open contact relay n. 3 (fan 1)
C1-3 COMMON 1 Common relay n.1,2,3,4
C1-4 DO5 Normally open contact relay n.5
C1-5 DO2 Normally open contact relay n.2 (compressor 2)
C1-6 DO1 Normally open contact relay n.1 (compressor 1)
C1-7 COMMON 1 Common relay n.1,2,3,4
C1-8 COMMON 1 Common relay n.1,2,3,4
C1-9 COMUNE DO5 Common relay n.5 (not used)
C1-10 Not used Not used
C1-11 DO6 Normally open contact relay n.6 (global alarm)
Connector 1 of C-PRO MICRO RACK: Connection for relay outputs; in brackets the use
that is associated according to default setting
Conn. Abbreviation Description
C1-1 DO1 Normally open contact relay n.1 (compressor 1)
C1-2 COMMON DO1 Common relay n.1
C1-3 DO2 Normally open contact relay n.2 (compressor 2)
C1-4 COMMON DO2 C Common relay n.2
C1-5 DO3 Normally open contact relay n.3 (fan 1)
C1-6 COMMON DO3 Common relay n.3
C1-7 DO4 Normally open contact relay n.4 (fan 2)
C1-8 COMMON DO4, DO5 Common relay n.4,5
C1-9 DO5 Normally open contact relay n 5 (not used)
C1-11 DO6 Normally open contact relay n.6 (global alarm)
C1-12 COMMON DO6 Common relay n.6
Connector 2: Connection for the key of parameters upload/download and/or output for RS485
module
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C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
Connector 3: Connector for the anlogical output (optional, not available in the open versions)
Conn. Abbreviation Description( V+I Version)
C3-1 AO2 0-10Vdc
C3-2 GND Common analogue output
C3-3 AO3 4-20mA
Description (I+I Version)
C3-1 AO2 4-20mA
C3-2 GND Common analogue output
C3-3 AO3 4-20mA
Description (V+V Version)
C3-1 AO2 0-10Vdc
C3-2 GND Common analogue output
C3-3 AO3 0-10Vdc
Connector 4: Connector for low tension signals; in brackets the use that is associated according to
default setting
Conn. Abbreviation Description
C4-1 12Vac (Power) Power supply of the tool (12Vac/dc)
C4-2 Not connected Not connected
C4-3 GND Common analogue and digital inputs
C4-4 GND Common analogue and digital inputs
C4-5 AI4 Analogue input n.4 (input for 0/4-20 mA transducer; discharging
pressure)
C4-6 AI3 Analogue input n.3 (input for 0/4-20 mA transducer; suction
pressure)
C4-7 AI2 Analogue input n.2 (input for NTC probe; external temperature)
C4-8 AI1 Analogue input n.1 (input for NTC probe; room temperature)
C4-9 12Vac (Power) Power supply of the tool (12Vac/dc)
C4-10 12Vdc Current transducer and cut-off module power supply (50 mA max.
not protected against short circuits)
C4-11 PWM Pulses output for phase cut module
C4-12 DI5 Digital input n.5 (high pressure at discharging staus of circuit 1)
C4-13 DI4 Digital input n.4 (thermal protection of fan 2)
C4-14 DI3 Digital input n.3 (thermal protection of fan 1)
C4-15 DI2 Digital input n.2 (thermal protection of compressor 2)
C4-16 DI1 Digital input n.1 (thermal protection of compressor 1)
Connector 5: Connector for the remote keyboard and expansion of I/O
Conn. Abbreviation Description
C5-1 12Vdc Power supply of remote keyboard (12 V DC 50 mA max.; not
protected against short circuits)
(Note: the possible expansion has to be supplied locally )
C5-2 GND Common
C5-3 DATA Voltage serial
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C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
2.8 C-PRO EXP MICRO electrical connection
Here follows the layout of connection of C-PRO EXP MICRO expansion with tables concerning the inputs and
outputs meaning.
Consult the hardware manual for the references about the connection cables’ maximum lenght.
C-PRO EXP MICRO connections
Connector 1: Connection for relay outputs
Conn. Abbreviation Description
C1-1 DO7 Normally open contact relay n.7
C1-2 COMMON DO7 Common relay n.7
C1-3 DO8 Normally open contact relay n.8
C1-4 COMMON DO8 C Common relay n.8
C1-5 DO9 Normally open contact relay n.9
C1-6 COMMON DO9 Common relay n.9
C1-7 DO10 Normally open contact relay n.10
C1-8 COMMON DO10,
Common relay n.10, 11
DO11
C1-9 DO11 Normally open contact relay n.11
C1-11 DO12 Normally open contact relay n.12
C1-12 COMMON DO12 Common relay n.12
Connector 2: Connector for low tension signals
Conn. Abbreviation Description
C2-1 12Vac (Power) Power supply of the tool (12Vac/dc)
C2-2 Not connected Not connected
C2-3 GND Common analogue and digital inputs
C2-4 GND Common analogue and digital inputs
C2-5 AI8 Analogue input n.8 (for 4-20 mA transductors)
C2-6 AI7 Analogue input n.7 (for 4-20 mA transductors)
C2-7 Not connected Not connected
C2-8 Not connected Not connected
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C-PRO NANO RACK AND C-PRO MICRO RACK APPLICATION MANUAL
C2-9 12Vac (Power) Power supply of the tool (12Vac/dc)
C2-10 12Vdc Transducers’ power supply (50 mA max. not protected against short
circuits)
C2-11 PWM Pulses output for phase cut module
C2-12 DI10 Digital input n.10
C2-13 DI9 Digital input n.9
C2-14 DI8 Digital input n.8
C2-15 DI7 Digital input n.7
C2-16 DI6 Digital input n.6
Connettore 3: Connector for control unit device
Conn. Abbreviation Description
C3-1 12Vdc Power supply
C3-2 GND Common
C3-3 DATA Voltage serial
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3 Elements and fittings network
3.1 Example for C-PRO NANO RACK
C-PRO NANO RACK E C-PRO MICRO RACK APPLICATION MANUAL
3.2 Example for built-in versions of C-PRO MICRO RACK
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C-PRO NANO RACK E C-PRO MICRO RACK APPLICATION MANUAL
3.3 Example for blind versions of C-PRO MICRO RACK
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C-PRO NANO RACK E C-PRO MICRO RACK APPLICATION MANUAL
4 USER INTERFACE
4.1 Display and keyboard
There are two interface typologies for the application:
⋅ a 4 display interface with 7 Built-In segments.
⋅ a remote 4 display interface with 7 segments.
They both have 4 keys for navigation/editing of the pages and they are different in the display through icons
(built-in) or in the display through led (remote) of some associated sites.
For both typologies there will be a description of the keys and of the leds used by the application, in fact,
according to the interface used, it is possible to manage a different quantity of keys and leds.
Local Built-In interface
The built-In interface is integrated directly in the control unit used.
C-PRO NANO RACK
C-PRO MICRO RACK
Built-in version
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C-PRO NANO RACK E C-PRO MICRO RACK APPLICATION MANUAL
In the keyboard there are 4 keys for pages navigation and values editing with the following meaning:
- UP and DOWN: parameters modification in editing; otherwise menu and parameters shift. If we
are in alarms pages display mode, everytime we press it, it makes all the active alarms shift, otherwise it
shows the “none” default word in order to signalize the absence of alarms.
Keeping UP pressed when the machine is switched on it is possible to change the probe that we want to
be default displayed according to the following chart:
LP (o LP1) Suction probe (circuit 1)
HP (o HP1) Discharging probe (circuit 1)
LP2 Suction probe circuit 2
HP2 Discharging probe circuit 2
If we wanto to change the display, we have to scroll this chart and confirm through SET/ENTER key:
the label of the probe selected will flash for a couple of seconds.
- SET / ENTER: confirmation of the value in editing; otherwise entering of controls possibly
associated to the text where there is the cursor. ENTER key, if it is kept pressed for about 2 seconds,
allows to access the main menu. If we are in display of an alarm page mode, kept pressed for about 2
seconds, it allows the alarm reset.If we are in alarms pages display mode, everytime we press it, it
makes all the active alarms shift, otherwise it shows the "none" default word in order to signalize the
absence of alarms.
- STAND-BY / ESC: cancellation of the value in editing; otherwise default page request possibly
associated to the current page.. ESC key, if kept pressed for about 2 seconds, allows to switch on/off the
machine. If we press it in the main page, it allows to enter the list of all the active alarms.
The following icons are also used:
1
2
HP
LP
1
3
2
4
- Alarm icon : it identifies the possible presence of alarms. If it is switched on it means that there
are some alarms, otherwise it remains switched off. The flashing light signalizes the presence of a new
alarm that has not been viewed yet.
- Stand-by icon: associated to ESC key it identifies the machine status :
Switched off: macchine switched on
Switched on: machine switched off
Flashing slowly: machine switched off by digital input
Flashing fastly: machine switched off by supervisor
- Circuit 1 icon: it identifies the status of circuit 1 (TN):
Switched off: circuit switched off or in stand-by mode
Switched on: the circuit requires power
Flashing slowly: circuit switched off by digital input
Flashing fastly: circuit switched off by supervisor
- Circuit 2 icon: it identifies the status of circuit 2 (BT).
Switched off: circuit switched off or in stand-by
Switched on: : the circuit requires power
Flashing slowly: circuit switched off by digital input
Flashing fastly: circuit switchec off by supervisor
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C-PRO NANO RACK E C-PRO MICRO RACK APPLICATION MANUAL
- LP icon: it is active when the value of suction probe is displayed. If it flashes with alarm
icon switched on, it indicates the intervention of low pressure alarms on suction circuit or suction probe
not-connected.
- HP icon: it is active when the value of discharging probe is displayed. If it flashes with
alarm icon switched on, it indicates the intervention of high pressure alarms on discharging circuit or
discharging probe not-connected.
- Fans icon: it identifies the fans’ status. If it is switched on, it means that at least one fan is
switched ton, otherwise it remains switched off. If it flashes it means that at least one fan is switched on
in manual function status.
- Compressors icon: it identifies the compressors’ status. If it is switched on, it means that at least one
compressor is switched on, otherwise it remains switched off. If it flashes it means that at least one
compressor is switched on in manual function status. This display is alternative to the one of 1,2,3,4
icons (parameter PH51).
- Maintenance icon: it identifies maintenance request. If it is switched on it means that at least one
compressor or one fan has been manually switched on, if it flashes it means that at least one compressor
or one fan has overcome the number of operation hours, otherwise it remains switched off.
- °C icon: it identifies the unit of measurement chosen. If it is switched on it indicates the
temperature selection.
- Bar icon: it identifies the unit of measurement chosen. If it is switched on it indicates the
pressure selection.
- 1,2,3,4 icons : they identify the status of the single compressors. If they are switched on, it means
that the compressor is working, if they flash slowly it means that the compressor is in alarm status, if
they flash quickly there is a timing signal in progress for the next switching on or off, Otherwise they
remain switched off. These icons are enabled to parameter PH51 .
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C-PRO NANO RACK E C-PRO MICRO RACK APPLICATION MANUAL
Remote terminals
V LEDi
Panel version
V WALL
Wall version
In the keyboard there are 4 keys for pages navigation and values editing with the following meaning:
- UP and DOWN: parameters modification in editing; otherwise shift of the cursor. UP key, if it is
pressed for about 2 seconds during the display of an alarm, allows the alarm reset. If it is pressed it
makes all the active alarms shift, otherwise it shows the “none” default word in order to signalize the
absence of alarms.
- SET / ENTER: value confirmation in editing; otherwise entering of controls possibly associated
to the text where there is the cursor. ENTER key, if it is pressed for about 2 seconds, allows to enter the
main menu.
- STAND-BY / ESC: cancellation of the value in editing; otherwise default page request possibly
associated to the current page.. ESC key, if kept pressed for about 2 seconds, allows to switch on/freeze
the machine. If we press it in the main page, it allows to enter the list of all the active alarms.
The following leds are also used:
:
- L1 = summer led: it identifies the status of circuit 1 (TN).
Switched off: circuit switched off or in stand-by
Switched on: the circuit requires power
Flashing slowly: circuit switched off by digital input
Flashing fastly: circuit switched off by supervisor
- L3 = winter led: it identifies the status of circuit 2 (BT).
Switched off: circuit switched off or in stand-by
Switched on: : the circuit requires power
Flashing slowly: circuit switched off by digital input
Flashing fastly: circuit switched off by supervisor
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