Danfoss Chiller and reversable chiller User guide

User Guide

Chiller and reversable chiller

Reciprocating, scroll and screw compressors

Software Version 4.40.00

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Contents

User Interface ...............................................................................4

LED Display, LCD Display, Keyboard, Unit status, Login, Start, Parameter, Input/Output, I/O Display, I/O Conﬁg, I/O Prb Calibration, I/O Commissioning, Alarm, EEV, VSH Monitor, VSH Control, Clock, Language, Service, Hours Counters, Variable speed pump

Parameters .................................................................................12

Display ........................................................................................12

Parameter: dSA, dSb, dsc, Log, Par

Password ....................................................................................13

Parameter: L01, L02, L03

SetUp ..........................................................................................13

Parameter: y01, y02, y03, y04, y05, y06, y08, y09

Serial setting ..............................................................................14

Parameter: Cid, Ser, bAU, COM

Evaporator .................................................................................15

Parameter: H1, H2, H3, H4, H5, H12

Compressor ................................................................................16

Parameter: H6, H7

Condenser ..................................................................................17

Parameter: H9, H10, H11

Heat Pump ..................................................................................18

Parameter: H40, H41, H42

Maintenance ..............................................................................19

Parameter: H43

Network settings .......................................................................20

Parameter: n01,…n17

Conﬁguration .............................................................................22

Parameter: rEG, rET, rT1, rT2, o30, Er1

Main Setpoint ............................................................................24

Parameter: SC1, SCL, SCH, SH1, SHL, SHH, SRE

Economic Setpoint ....................................................................25

Parameter: SdS, SdM, SdC, SdH, SdO

Setpoint compensation in based on the outside temperature .. 26

Parameter: CC1, CC2, CC3, CC4, CH2, CH3, CH4

PI regulation ..............................................................................27

Parameter: CrC1, rH1, Rin, rC2, rC3

Dead zone regulation ................................................................28

Parameter: ddC, ddH, dd1, dd2, dd3, dd4, dd5, dd6, dd7, dd8 ...28

Digital output lock.....................................................................29

Parameter: DOn, Ain, Dos, DOd

Buzzer and relay ........................................................................29

Parameter: BUZ, Adl, AOF

Flow alarm ..................................................................................30

Parameter: AFr, AF1, AF2, AF3

ICE alarm ....................................................................................31

Parameter: AIS, AID, Air, AI1, AI2, AI3, AIT, AIo

Compressor oil delta pressure alarm .......................................32

Parameter: OPR, OdP, GdP

Circuit high temperature alarm ................................................32

Parameter: HTs, HTd

Pressure alarms from analogue input......................................33

Parameter: AHE, AHS, AHd, Alr, AL1, AL2, ALE, ALS, ALd, LPt, AVO, VCt, SHS, SHb

High water temperature alarm in cooling mode.....................34

Parameter: Ats, Atd

Boiler water temperature alarm ...............................................34

Parameter: AbS, Abd

Fault of the regulation probe of the external coil ...................35

Parameter: ACM, ACS, ACd

Preventions ................................................................................35

Parameter: TMx, THo, TLo, HPE, HPo, HPh, LPE, LPo, LPh, PPt, PPp, HFo

Superheat alarms ......................................................................37

Parameter: SHh, AHI, Ahi, AHd

Oil temperature alarms .............................................................37

Parameter: OTm, OTi, OTd

Screw compressors ....................................................................38

Parameter: C01, C02, CSO, CSb, T1, T2,T3, T4, C07, C08, T5, T6, T21, T22, T24, T24, T25, T26, T27, T28, T29

Starting type of the compressor ..............................................42

Parameter: Sty, Sti, SSt, Stm, Sdd

Economizer ................................................................................43

Parameter: E01, EO2, EO3, EO4

Liquid injection ..........................................................................44

Parameter: T41, T42, T43, T44, T45

Compressor with unloaders ......................................................44

Parameter: C04, C05, C06, C08

Maximum number of compressor starts per hour ..................45

Parameter: CT0, CT1, CT2, CT3, CT4, CT5, CT6, CT7

Valve in the liquid line ...............................................................46

Parameter: Pd1, Pd2, Pd3, Pd4

Maximum compressor running hours .....................................47

Parameter: C50

Inverter compressor ..................................................................48

Parameter: IV0, IV1, IV2, IV3, IV4, IV5

Compressor enabling ................................................................50

Parameter: CT1, CT2, CT3, CT4, CT5, CT6, CT7, CT8

Heaters .......................................................................................50

Parameter: HE1, HE2, HE3, HE4, HE5, HE6, HE7

Pump of the internal coil ...........................................................51

Parameter: P01, P02, P03, P04

Modulating Pump ......................................................................52

Parameter: ERT, ECS, ECd, ECi, EHS, EHd, EHi, EDB, EI1, EI2, EI3

Fan for the internal coil .............................................................53

Parameter: P21, P22, P50

Free cooling ................................................................................54

Parameter: FrA, Fr1, Fr2, Fr3, Fr4, Fr5, Fr6, Fr7, Fr8, Fr9, FI1, FI2, FI3

Valve in the water line ...............................................................56

Parameter: EF1, EF2

External coil ...............................................................................56

Parameter: F01

Fan requests ...............................................................................57

Parameter: F02, F03, FC, FCD, FCI, FCd, FHS, FHD, FHI, FHd

Fan regulation with a variable proportional part ...................59

Parameter: F31, F32, F33, F34, F35, F36, F37, F24, F25

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User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Economic setpoint for fan regulation ......................................60

Parameter: SS1, SS2, SS3, SS4

Stepless regulation of the fan ..................................................60

Parameter: F10, F11, F12, F13, F14, F20, F21, F22, F23

Hot gas bypass valve .................................................................61

Parameter: Bp0, Bp1

Cooling towers ...........................................................................62

Parameter: WFs, WFd

Reversing cycle valve (4 ways valve) ........................................63

Parameter: rE2, rE1, rE3, rE4

Defrost ........................................................................................64

Parameter: d01, d02, d03, d04, d05, d06, d07, d09, d10, d11, d12, d13, d14, d15, d16, d20, d22, d23, d25, d26

Heat recovery .............................................................................66

Parameter: HRs, HRm, HRc, HRn, HRt, HRo

Superheat ...................................................................................67

Parameter: V10, V20, bAt, ex1, ex2, ex3, N19, N04, N05, N20, N22, N10, N09, N11, N32, N18, N17, N15, N21, SHO

Input output expansion module ..............................................69

Parameter: XCn

Auxiliary alarms .........................................................................69

Parameter: a11, a21, a31, a41, a12, a22, a32, a42, a13, a23, a33, a43, a 14, a24, a34, a44

Oil Alarm Tandem .....................................................................70

Parameter: BME, BST, TD1, TD2, TD3, TD4, ADO, BOF, BFR

Compressor Oil Pump................................................................72

Parameter: OPE, OPO, OT1, OT2

Temperature delta of the oil .....................................................73

Parameter: OTD, OD1, OD2

How to set the power request remotely ..................................73

Parameter: RPE, RPS

How to log data on an SD card .................................................74

Parameter: ENL

Commissioning ..........................................................................77

Parameter: Ort

Graphic diagrams of some of the managed unit types ..........80

Status variables .........................................................................91

Software status ..........................................................................91

Parameter: A01, …, A19, C01, …, C04, E01, …, E08

Software info .............................................................................92

Parameter: F01, …, F07

Superheat info ...........................................................................93

Parameter: H01, …, H13

Preparatory: link to MCXShape manual

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

User Interface

Functionalities: Enable screen saver for LCD Functionalities: Enable LED display Enable support for MMILDS Functionalities: Enable schema view Functionalities: Enable I/O probe calibration Functionalities: Enable override of input and output Functionalities: Enable commissioning form Functionalities: Enable EEV using EKE 1C Enable MMI navigation Functionalities: Enable EEV using EXD 316 Functionalities: Enable EEV using MCX driver Functionalities: Enable VSH Modbus control Functionalities: Enable Scheduler Functionalities: Enable Evaporator variable capacity pump

Note: playing with MCXShape, it is very easy to customize the structure and the visibility of the menu: so the following indication cannot match with all the compiled software

Main screen: LED Display Functionalities: Enable LED display

Note: check parameters dsA, dSb and dSC.

Main screen: LCD Display

Note: check parameters dsA, dSb and dSC.

Keyboard

: Scroll UP, increment a value

: 3s when in main screen: toggle ON/OFF

: Scroll down, decrement a value

: 3s when in main screen: toggle Heat/Cool mode

: exit and save,

: when in main screen: access the active alarm list

: 3s when in Alarm screen: manual reset

The LEFT and RIGHT keys, if present, allow you to move the cursor to the desired option

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User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Menu: Unit Status Functionalities: Enable schema view

Schema:

View EEV Cx (for valve which is driven by EXD or MCX):

The alarms bit pattern is:

Note: by pressing “OK” key you manually tune the position of the valve

View EEV Cx (for valve which is driven by EKE):

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Menu: Login Parameters and Menu are organized into 4 access levels. Levels from 1 to 3 are linked to a password.

Elements cannot be accessed when they are on a higher level than the entering level. The level of each parameter and menu is deﬁned with MCXShape

• Level 0 is accessible without password

• Levels 1-3 are linked to a password (Check parameters L01, L02 and L03)

• Level 4 is not linked to a password, it can be used to make menu or parameters never reachable. You can log in from the menu:

if the password provided is not correct you remain on the login screen. Otherwise you get back to the main menu.

Menu: Start

Network menu: used to switch all the machines on or oﬀ in the Master and Slave network Default param. menu: used to load the default value of the parameters which have been deﬁned in

the .mcxs ﬁle

Menu: Parameter This menu contains all the parameters.

The meanings of the parameters are explained in the last part of this manual

Menu: I/O Display Display input and output values

LED display

Shows you (using the UP and DOWN keys) all the input and output values in sequence, showing the I/O code on display A (“AI” for analogue input; “AO” for analogue output; “dI” for digital input and “dO” for digital output) and its value on display B (analogue inputs that are not present or in alarm are shown with “----”).

LCD display

You have access to three screens showing all the input and output values; each screen shows a group of 8 I/O. Use UP and DOWN keys to scroll. The second and third screens are used with MCX15 and MCX20 only. The example below shows the ﬁrst screen.

Menu: I/O Conﬁg This menu is prepared for future use

Note: it is under the 4th level of password

Menu: I/O Prb Calibration Functionalities: Enable I/O probe calibration

inside the “Reset All” menu, you can reset all the oﬀsets to zero

Note: the screens calibration are not translated

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User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Menu: I/O Commissioning Functionalities: Enable override of input and output

Functionalities: Enable commissioning form

Note: the logic will not aﬀect the override. The override is stopped for power oﬀ, "Reset all" command and timeout that is deﬁned into the menu "Setup"

Menu: Alarm Each alarm is described through an alarm description (for LCD display only), an alarm code and the

time since its activated in the format hours:minutes:seconds (seconds for LCD display only). Note: You can also access alarm visualization by pressing the ESC key from the main screen.

The alarm is only reset if the alarm has ended and it will send you back to the main screen. Note: Alarms can also be reset by holding ESC for 3 seconds on the alarm screens

Menu: EEV Functionalities: Enable EEV using EKE 1C

Functionalities: Enable EEV using EXD 316

The parameters inside the external drivers can be checked and changed in the Conﬁg EEVx menu. The available parameters for the EXD are: r05, r09, r10, r12, A34, n04, n05, n06, n09, n10, n11, n15,

n17, n18, n19, n20, n21, n22, n32, n37, n38, n39, n40, n42, n43, n44, n45, n50, o10, o18, o20, o21, o30, o45, o56, o61, n03 The available parameters for the EKE are: R012, R009, r105, r107, O030, N102, N015, N104, N017, N021, N107, N009, N010, N116, N005, N019, N004, N020, N117, N119, N130, N011, N140, N141, A034, A103, A104, A110, A102, I020, I022, I040, I042, I043, O020, O021, I067, R005, B101, O002, O022, G003, N108, N109

The Load Factory menu overwrite the EXD parameters with the default ones

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Menu: VSH Monitor Functionalities: Enable VSH Modbus control

VSH Status:

VSH Alarms:

The STW bit-map is:

VSH inverter details:

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User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Menu: VSH Control

These commands are linked with the control word of the inverter

Menu: Clock

Functionalities: Enable Scheduler

Note: with the number beside to the function "Enable scheduler" you set the maximum amount of records, before to change it consider that it also aﬀects the EEPROM.

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Menu: Language

Menu: Service

Software info: Check variables status F01-F07

Device info:

Show rolling text:

Enabling rolling text will add additional information in the main screen

- P: Power demand

- Cx- Alarm: Compressor X is in alarm

- Cx- CTy: Compressor X is waiting for the parameter with the label CTy

- P-Down: Compressor is waiting for pump down to be switched oﬀ

- Cx- Prev: Circuit X is being reducing by prevention

Network reset: it restarts from zero the managing of the master slave network Stepper valves info:

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User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Menu: Hours Counters Note: The Reset Counters menu resets to zero all the counters, compressors and both pumps.

For resetting the single compressor or pump push "Enter" button into the screen where are reported the hours of the device.

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Parameters

Display

Parameter: dSA, dSb, dsc, Log, Par

How to customize the main screen.

dSA-Display A value 0= OFF : Display A is not used

1= IdOF : Display A shows the state of the digital input ON/OFF 2 =SEt : Display A shows the set point of the compressors regulation 3 =rEg : Display A shows the probe used for regulation 4=AI1 : Display A shows the value of the analogue input 1

……

19 =AI16 : Display A shows the value of the analogue input 16

dSb-Display B value 0 =OFF : Display B is not used

1=IdOF : Display B shows the state of the digital input ON/OFF 2=SEt : Display B shows the set point of the compressors regulation 3 =rEg : Display B shows the probe used for regulation 4 =AI1 : Display B shows the value of the analogue input 1

…

19 =AI16 : Display B shows the value of the analogue input 16 20 =TcP1 : Display B shows the temperature calculated from the dP1 sensor

…

23 =TcP4 : Display B shows the temperature calculated from the dP4 sensor

dsc-Icone for cooling mode

Log- Logo Log=0 is combined with the image StartLogoDX in Chiller/BIN/Graph folder

Log=1 is combined with the image StartLogoDX_1 in Chiller/BIN/Graph folder

Note: the logo is shown just after the power on, pay attention to the size of the image because it is ﬁt in this screen

Par- Parameters version It is not used in the software, can be used to recognize diﬀerent set of parameters

Note: this number is reported into the software information

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User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Password

Parameter: L01, L02, L03

How to change the passwords.

L01, L02, L03-

Level x password

Typing the parameter L0X, in the login screen, you will be able to see all the parameters and menu with level <= of X; The level of access is highlighted in the yellow square; after 10 minutes of inactivity the display is set to an access level of zero

SetUp

Parameter: y01, y02, y03, y04, y05, y06, y08, y09

How to switch ON-OFF and change the application mode from parameters.

Functionalities: Enable scheduler Functionalities: Enable show compressor status Digital input: ONO Digital output: UNT

y01- System ON/OFF 0=Machine OFF

1=Machine status depends on the DI _ONO

Deﬁnes whether the chiller is in the ON or OFF state, it can be changed from the menu, remotely by Modbus or CANBUS and from start screen by holding the up arrow key. Note1: The software is in ON status only if y02=ON and DI_ONO=ON Note2: The chiller status is also reported in the digital output UNT_Unit Status

y02- Restart mode after power OFF

y03- System heat/cool It works only with H40> 0 and rE2=UI;

0=OFF means that after power on, the chiller gets up in OFF state 1=ON means that after power on, the chiller gets up in ON state 2=EQUA means that after power on, the chiller keeps the same state as before power oﬀ

This deﬁnes whether the machine should be in chiller mode or heat pump mode. This parameter can also be changed from the “Start” menu

y04- Actuators delay from power ON

y05- Temperature measurement unit

y06- Keyboard lock 0=No

y08- Scheduler enable 0=No means that the scheduler is disabled

It is in seconds and sets the delay when powered ON (not when the unit status changes to ON) before activating any outputs. Its purpose is to distribute the drawn current and protect the elements and particularly the compressor against repeated starts in the event of frequent power failures. When the timer has elapsed, the controller starts to manage the outputs based on the other times and the other normal functions.

0=C means that the user interface will show values in Celsius and bar 1=F means that the user interface will show values in Fahrenheit and PSI

1=Yes means that the user interface is locked

Note: This parameter can be adjusted in order to be set remotely because it is not enabled for the menu

1=Yes means that the scheduler is enabled Note: the “Enable scheduler” functionality is required

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

y09- Show rolling test 0=No

1=Yes

Provides information about what is going on in relation to the cutting in/out of the compressors

Note: If the functionalities “Enable show compressor status” is enabled in the UI, a small icon is added for each compressor

Serial setting

Parameter: Cid, Ser, bAU, COM

How to conﬁgure the communication port.

Functionalities: Enable Modbus address diﬀerent from CANBUS address

Cid – Serial address (CAN) Deﬁnes the ID in the CANBUS communication

Note: the baud rate and the settings of the CANBUS communication is tuned through the bios menu or though the MYK

SEr – Serial address (MODBUS) Deﬁnes the ID in the Modbus communication

Note: the functionalities “Enable Modbus address diﬀerent from CANBUS address” is required

bAU – Serial baud rate (Modbus)

COM – Serial settings (Modbus)

Deﬁnes the baud rate in the Modbus communication

0 means Reserved: do not use 1 means 1200 bits/sec 2 means 4200 bits/sec 3 means 4800 bits/sec 4 means 9600 bits/sec 5 means 14400 bits/sec 6 means 19200 bits/sec 5 means 28800 bits/sec 8 means 38400 bits/sec 9 means 57600 bits/sec 8 means 115200 bits/sec

Deﬁnes the serial settings of the Modbus communication

0 means 8N1 1 means 8E2 2 means 8N2

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User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Evaporator

Parameter: H1, H2, H3, H4, H5, H12

How to conﬁgure the internal coils.

Digital input: OPE, OPE1, OPE2 Digital output: PE1, PE2, …, PE8, H1, …, H4 Analogue input: TIN, TOM, TO1, …, TO4 Analogue output: E1, …, E4 Alarms: AE1, AO7, AP0, AP1, …, AP9

H1 – Number of evaporators Deﬁnes the number of internal coils;

The supply temperature (TIN) is the same for all the coils. Each coil has a “leaving temperature” (T01-T04) ; there is also a common “leaving temperature” sensor for all the coils ( TOM)

H2 – Number of circuits per evaporator

H3 – Air or water cooling Deﬁnes whether the evaporation process is managed by a pump (H3=H2O) or a fan (H3=Air):

H4 – Number of pump/fan per

evaporator

H5 – Number of heaters per evaporator

H12 –Fan in common for each evaporator

Deﬁnes the number of circuits for each internal coil; Conﬁguration accepted:

• 1 circuit per internal coil -> 0<H1<5

• 2 circuits per internal coil ->0<H1<3

• 3 circuits per internal coil H1=1

• 4 circuits per internal coil H1=1

• WATER evaporators (H3=H2O). For each evaporator, the H1,...,H4 digital outputs which are necessary to manage the antifreeze heaters on the basis of the leaving water temperature TO1,...,TO4 are controlled. The number of heaters per evaporator is deﬁned by H5.

• AIR evaporators (H3=Air). Only the “TO1_Tout Evaporator 1” input is used to measure the supply air temperature even when more than one evaporator is present. The ice alarm AE1 is replaced with the Low air temperature warning A07 which is set to the same parameters as the ice alarm.

Deﬁnes the pumps (or fan) per evaporator:

• WATER evaporators (H3=H2O): The PE1 and PE2 digital outputs are managed to control one pump or two twin pumps.

• AIR evaporators (H3=Air): “PE1 and PE2” outputs are used to manage fans on the evaporator. Note: check "Fun for internal coil"

Deﬁnes the number of heaters for each internal coil; Conﬁguration accepted:

• 1 heater per internal coil -> 0<H1<5

• 2 heaters per internal coil ->0<H1<3

• 3 heaters per internal coil ->H1=1

• 4 heaters per internal coil ->H1=1

0=NO means that each fan (AO ECx) works in relation to the evaporator pressure 1=Yes means that only the fan EC1 will work in relation to worst pressure in the evaporators

Note: the fan speed is managed with PI logic (check parameters ECS,….,Hi)

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Compressor

Parameter: H6, H7

How to conﬁgure the compressors number.

H6 – Number of compressor per circuit

H7 – Number of unloader per compressor

Deﬁnes the number of compressor per circuit; It’s not possible have circuits with diﬀerent number of compressors Conﬁguration accepted:

• 1 compressor per circuit -> 0<H1*H2<5

• 2 compressors per circuit ->0<H1*H2<5

• 3 compressors per circuit ->0<H1*H2<3

• 4 compressors per circuit ->0<H1*H2<3

• >4 compressors per circuit ->0<H1*H2<2

Deﬁnes the number of compressor partialisation; The number of regulation steps is equal to H6*H2*H1*(H7+1) Activation and deactivation of the compressor’s unloader is deﬁned by the parameters “C04-Unloaders activation mode” and “ C05-Unloaders deactivation mode”

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User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Condenser

Parameter: H9, H10, H11

How to conﬁgure the external coil.

Digital input: OFC, FCL1, …, FCL4, OFC1, …, OFC12 Digital output: FC1, …, FC12 Analogue output: Fc1, …, Fc4 Alarm: AF1, …, AF12

H9 – Air or water cooler

condenser

H10 – Number of pump/fans per condenser

H11 –Fan in common to all condenser

Deﬁnes whether the fans or the pump regulate condensing.

0=AIR : Controls defrosting in heating mode. 1=HO : The conﬁguration managed is H10=1 and H11=Yes

Note: the pump or fan behaviour is deﬁned by parameters F01, F02 and F03

Deﬁnes the necessary digital output to control the pumps or fans on the condenser.

• Water-cooled units (H9=H2O).The single “Cond Fan1/Pump1” digital output is controlled to drive a pump.

• Air-cooled units (H9=AIR). Contributes to deﬁning the total number of managed ventilation steps and thus of the corresponding ”Condenser Fan1”, ..., ”Condenser Fan8” digital outputs used to drive them.

On multi-circuits units, fans can be in common to all condensers. If fans are not in common to all condensers (H11=0=NO), the following output are controlled:

• as many analogue inputs as the condensers (H1*H2)

• as many digital outputs as the condensers (H1*H2), multiplied by the number of fans per condenser (H10); digital outputs for fans are assigned to condensers in a sequential and balanced way, assuming that all condensers have the same number of fans; e.g. in a system made of 2 condensers and 6 fans, “Cond Fan1/Pump1”, “Condenser Fan2” and “Condenser Fan3” outputs are assigned to control fans belonging to the ﬁrst condenser; “Condenser Fan4”, “Condenser Fan5” and “Condenser Fan6” to the second condenser.

• as many analogue output s “InverterFanCond1”,...,”InverterFanCond4” for condensing control as for the condensers (H1*H2).

If fans are common to all condensers (H11=1=YES) the following outputs are used:

• as before, as many analogue inputs for condensing controls as there are circuits per condenser (H1*H2), but the one requiring the higher response from the control is used for regulation. Each analogue input is then used for defrost control in heating mode;

• as many digital outputs as fans per condenser (H10);

• one analogue output “InverterFanCond1” for fan speed regulation.

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Heat Pump

Parameter: H40, H41, H42

How to conﬁgure the heat pump mode

Functionalities: Enable Heat Pump Control Digital output: HC1, …, HC4, BO1, …, BO4 Analogue input: SP1, …, SP4, dP1, …, dP4

H40 –Heat pump type 0=No means that the software does not perform heating mode

1=GAS means that the software performs the heating mode, the internal coil is the evaporator in

cooling mode and the condenser in heating mode 1=H2O means that the software performs the heating mode, the coils keep the same meaning in both heating and cooling mode both

Note: one digital output “Reverse Valve C1”, ..., “Reverse Valve C4” per each circuit is reserved for controlling the reverse ﬂow valve

H41- Boiler number of heaters Boiler heaters “Boiler1”, ..., “Boiler4” are turned ON when the temperature measured by the regulation

probe enters in the area deﬁned by the active regulation setpoint in heating (SH1) and diﬀerential rH1.

They are an alternative to the heat pump, not in addition.

Boiler heaters can be activated only if the temperature measured by the “BoilerSafety” probe is under a speciﬁc safety limit AbS. If it is over the limit, alarm A14 is generated. To reset the alarm there is a constant diﬀerential Abd to be considered.

H42- Probe change in HP 0=No means that the probe is before the 4-way valve (close to the compressor):

• the sensor SPx – Suction pressure Cx measures low pressure

• the sensor dPx – Discharge pressure Cx measures high pressure

1=Yes means that the probe is after the 4-way valve (close to the coils):

• the sensor SPx – Suction pressure Cx measures low pressure in cooling mode and high pressure in heating mode

• the sensor dPx – Discharge pressure Cx measures high pressure in cooling mode and low pressure in heating mode

Note: if ex2=yes the variable used from H42 (pink line below) is always about low pressure, in this case pay attention to set H42=No because in heating mode the discharge pressure will not be available

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User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Maintenance

Parameter: H43

How to manually set the compressor power request.

Functionalities: Enable commissioning for power request Digital output: MPR

H43- Manual chiller power The power request provided to the compressors is about H43 %

H43< zero means that the function is disabled

Note: if H43 >=0 the digital output MPR is closed

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Network settings

Parameter: n01,…n17

The Master and Slave is a functionality that allow a group of machines to be managed like one machine (Master) decides which and how many units (Slaves) should run. The max number of units is 8 (7 slaves + 1 master), the network is CANBUS. The Master and Slave function optimizes:

- ageing of machines

- distribution of the load in order to improve the performance of the plant

- The backup units

Functionalities: Enable Master/Slave Alarms: N01, N02, N03, N04, N05,N06, N07, N08

n01 –MCX network disable 0=NO means that the Master slave function is enabled

1=Yes means that the Master slave function is disabled

n02 –Number of slave nodes It has to be set equal to (“number of chillers in the network” -1)

n03- Auto master select 0=NO means that the master in the master slave network can be only the chiller with the CANBUS ID

equal to n15: if the master is not more available in the network, the other chillers will start to work in standalone mode

1=Yes means that the master in the master slave network is the chiller with lowest CANBUS ID

n04- Distribution algo 0= PWR The master, using its own sensors, decides how many chillers are working and the chillers’

power supply; The maximum number of units that can work is related to the gap between setpoint and temperature: practically the regulation band is divided for the number of machines (n02+1-n09):

1= CAP the master manages only the start order (following the ageing of the machines), chillers manage their power as standalone machines. If all the units which are running have capacity above n12 %, the master will switch on another chiller (the youngest one). If all the units which are running have capacity below n13 %, the master will switch oﬀ the oldest chiller running The minimum time between two actions of the master is n14 seconds

n05- Power Smart power distribution enable

n06- Node rotation enable 0=No means that the start sequence of the machines is ﬁxed; the order depends on the addressing,

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1=Yes means that the master is allowed to cut-in the ﬁrst chiller available without considering the start order related to the ageing of the machines

the ﬁrst to start is the machine with the smallest CANBUS ID, the ﬁrst to stop is the chiller with the highest CANBUS ID 1=Yes means that the start/stop sequence of the machines depends on the ageing of the chillers, always starting with the youngest of the set and the oldest one is always the ﬁrst to stop. In the case that one machine works n17 hours more than another chiller that is switched oﬀ, the master will exchange the unit in order to align the ageing.

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

n07- Backup node oﬀset When the gap between setpoint and temperature is above (n07+regulation band), the ﬁrst backup

unit is allowed to work as a support, also considering parameter n08 .

Note: the oﬀset to enable the other backup units is (n07*m+ regulation band):

• m = 2 for the second backup unit

• m = 3 for the third backup unit

• …

Note: the backup units will work running normally after the set point. It will be switched oﬀ when the gap between setpoint and temperature is below the regulation band Note: the pump behaviour is deﬁned through the parameter P01

n08- Time to enable n07 It’s the time to stay far away from the setpoint in order to cut in the backup unit

Note: check parameter n07

n09-Number of back-up unit n09 deﬁnes the number of backup units inside the master slave network

A backup unit is never enabled (so does not provide cooling capacity) unless one of the following situations occurs:

• one of the other units becomes unavailable

• Support (see parameter n07 and n08)

Note: The master chooses the backup unit (among all nodes present in the network) by looking at the working time of every unit: the one which has worked the longest will be the backup unit.

n10 – Evaporator in common 0=No each chiller consider its own evaporator ﬂow alarm

1=yes the master will read its “FPE” digital input (Flow Evaporator) and will send the information to

other slaves

n11 – Pump alarm in common 0=No each chiller considers its own pump alarm

1=yes the master will read its “AP1” digital input (Evap pump/fan overload alarm) and will send the

information to other slaves

n12 – Capacity upper threshold

n13 – Capacity lower threshold

n14 – Capacity step min time See parameter n04

See parameter n04

n15 – Master node CAN ID It has to be set equal to the lowest ID in the CANBUS network

n16 – Slaves node CAN ID oﬀset The slaves have to take the CAN ID in relation to the n15 just adding n16.

E.G. for n02 =3

• Master ID= n15

• Slave1 ID= n15+n16

• Slave2 ID= n15+n16+n16

• Slave3 ID= n15+n16+n16+n16

n17 – Maximum gap time for unit rotation

n18 – Backup unit pump status

It is in hours If a running unit becomes older than a switched-oﬀ unit by more than n17 hours, the logic will switch oﬀ the oldest unit running it will cause the other unit to be switched on.

0=OFF: the backup chillers in standby have the pump switched-oﬀ 1=ON: the backup chillers in standby have the pump switched-on Note:during support or backup, the pump of the chiller follow P01 setting

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Conﬁguration

Parameter: rEG, rET, rT1, rT2, o30, Er1

rEG – Analogue input for

temperature regulation

rET – Regulation Type Deﬁnes the relation between the temperature gap and the power request to the circuits.

0= Tin : reference sensor is Tin_Tin Evaporator 1= ToM: reference sensor is TOM_Tout Evap Mix 2 =AI1: reference sensor is the analogue input 1

……

17 =AI16 : reference sensor is the analogue input 16 18 =SPT1: reference is the temperature calculated from the sensor SP1_Suction Press C1, the gas type is set using parameter o31

0=P : Power request to the circuits increases in proportional way with the regulation error, i.e., it is 100% when the regulation error (the gap between setpoint and the reference sensor ) is equal to rC1 ( rH1)

1=PI: the power request is the sum of P regulation (rET=0) plus a component (Integral part)

that increases in relation to the regulation error; the speed of the integral part depends on the parameter rin_Ti. For PI regulation, the balance is reached only when the regulation sensor gets the setpoint.

2=dZ : The delay between compressors activations varies between a maximum value dd5 and minimum value dd6 proportional to the temperature position inside the regulation band deﬁned by the activation diﬀerential dd1. Above setpoint + dead zone + activation diﬀerential, the delay among activations is equal to the minimum.

rT1- Minimum limit for TReg TX

rT2- Maximum limit for TReg TX

Similarly the action for the delay among compressors deactivations, which can vary between a maximum value dd7 and a minimum value dd8, is proportional to the temperature position inside the regulation band deﬁned by the deactivation diﬀerential dd2. Below a setpoint diﬀerential, the delay among activations is equal to the minimum value, dd8, up to a limit threshold, dd3. Below that, all the compressors are immediately switched OFF to avoid the unit ice alarm.

The analogue output rtr linearly replays the regulation probe (check parameter rET) It gets to 0% when the regulation probe reaches a value of rT1 Note: if the regulation probe is in error the AO_rtr gets to 100%

The analogue output rtr linearly replays the regulation probe (check parameter rET) It gets to 100% when the regulation probe reachs rT2 value Note: if regulation probe is in error the the AO_rtr gets to 100%

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

o30 – Gas type 0=---

1=R12 2=R22 3=R134a 4=R502 5=R717 6=R13 7=R131b1 8=R23 9=R500 10=R503 11=R114 12=R142b 13=-14=R32 15=R227 16=R401a 17=R507 18=R402a 19=R404a 20= R407c 21= R407a 22= R407b 23= R410a 24= R170 25= R290 26=R600 27= R600a 28= R744 29= R1270 30=R417a 31=R422a 32=R413A 33=R422D 34=R427A 35=R438A 36=R513A 37=R407F 38=R1234ze 39=R1234yf 40=R448A 41=R449A 42=R452A 43=R450A 44=R452B 45=R454B 46=R1233zdE 47=R1234zeZ 48=R449B 49=R407H

Note: the gas deﬁnition is used when the translation of the pressure in temperature is required;

ReG=SPT1 and for the “internal” super heat control

o31 – Dew/Bubble Conversion

mode

Er1 – Emergency mode max power

0=Dew 1=Bubble used for the gas that require the "Glide" approximation

Er1 = -1 the function is disabled Er1 >= 0 when the digital input EEr is closed the power request is limited to Er1 instead of 100%

Note: the functionality “Enable emergency mode from DI” is required

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Main Setpoint

Parameter: SC1, SCL, SCH, SH1, SHL, SHH, SRE

Analogue input: TRM

SC1 – Cooling temperature set

point

SCL – Minimum limit Deﬁnes the minimum limit of the setpoint in cooling mode

SCH – Maximum limit Deﬁnes the maximum limit of the setpoint in cooling mode

SH1 – heating temperature set

point

SHL – Minimum limit Deﬁnes the minimum limit of the setpoint in heating mode

SHH – Maximum limit Deﬁnes the maximum limit of the setpoint in heating mode

SRE- Remote set enable The regulation setpoint is deﬁned through the analogue input TRM_Remote Set

Deﬁnes the setpoint in cooling mode

Note: This limit is not respected when adjusted through Modbus

Deﬁnes the setpoint in heating mode

Note: This limit is not respected when adjusted through Modbus

0=NO means that the function is not enabled 1=rEL means that set point = main setpoint + oﬀset from analogue input (TRM_Remote set)

2=Abs means that set point is linearly deﬁned through AI_TREM, between SCL - SCH in cooling and SHL - SHH in heating

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Economic Setpoint

Parameter: SdS, SdM, SdC, SdH, SdO

SdS- Setpoint selection 0=DI means that the digital input SET2_Reg oﬀset from DI deﬁnes if use comfort setpoint (SC1 or

SH1) or the economic setpoint (SC1+SdC or SH1-SdH); in economic mode the proportional band in the PI control is increased by SdO 1=PAR meaning that the parameter SdM_Setpoint mode deﬁnes whether comfort setpoint

(SC1 or SH1) or the economic setpoint (SC1+SdC or SH1-SdH) is to be used; in economic mode the proportional band in the PI control is increased by SdO

SdM- Setpoint mode It works only for SdS=PAR

0=COMF meaning that chiller uses comfort setpoint ( SC1 or SH1) 1=ECO meaning that the chiller uses economic setpoint (SC1+SdC or SH1-SdH) In economic mode the proportional band in the PI control is increased of SdO.

SdC-Oﬀset for setpoint in cool-

ing

In economic status and cooling mode the regulation setpoint is shifted to SdC. Note: see parameter SdS

SdH-Oﬀset for setpoint in heating

SdO-Oﬀset for diﬀerential In economic mode the proportional band of regulation becomes rC1+SdO or rH1+SdO.

In economic status and heating mode the regulation setpoint is shifted to SdH. Note: Take a look to parameter SdS

Note: look at parameter SdS

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Setpoint compensation in based on the outside temperature

Parameter: CC1, CC2, CC3, CC4, CH2, CH3, CH4

Analogue input: OUt

CC1-Compensation enable 0=NO means compensation disable

1=YES means compensation enable

Note: this function adapts the setpoint to the outside temperature “Tout”

CC2-Outside temperature to start cool comp.

It’s in °C

CC3-Outside temperature to stop cool comp.

CC4-Maximum cooling compensation

It’s in °C

CH2-Outside temperature to start heat comp.

CH3-Outside temperature to stop heat comp.

CH4-Maximum heating compensation.

It’s in °C Like CC2 but used in heating mode

It’s in °C Like CC3 but used in heating mode

It’s in °C Like CC4 but used in heating mode

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

PI regulation

Parameter: CrC1, rH1, Rin, rC2, rC3

Note: the PI regulation is enabled when the parameter rET is equal to P or PI

rC1-Cooling temperature diﬀerential.

rH1-Heating temperature diﬀerential.

Rin- Ti It is the integral time of the PI regulation, the bigger the value of Rin the slower the action of the

rC2-Cut Oﬀ enable It enables the gradual reduction of the integral error once reached and exceeded the setpoint. The

rC3- Cut oﬀ oﬀset

See parameter rET

Integral part. See parameter rET

error integral in fact tends to keep the compressors turned on even if the proportional part of the error would require a shutdown. The amount of reduction is proportional to the distance from the setpoint considering the rC3 band. For example, in cooling, the reduction is zero when the control temperature is equal to the setpoint; the reduction is greatest when it is equal to setpoint-rC3.

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Dead zone regulation

Parameter: ddC, ddH, dd1, dd2, dd3, dd4, dd5, dd6, dd7, dd8

Functionalities: Enable Dead Zone Regulation

The dead zone regulation is enable when the parameter rET is equal to DZ It is a variable time regulation mainly used when the regulated value is the temperature of the ﬂuid leaving the evaporator. In the dead zone ddC no regulating action is taken. Close to the dead zone the decision to cut the compressor in or out will take a maximum time of (dd5 or dd7), a time that will decrease linearly outside the dead zone. This variable time logic is described below.

ddC-Cooling dead zone In dead zone ddC no regulation action is taken.

This is above the setpoint and used in cooling mode

ddH-Heating dead zone In dead zone ddH no regulation action is taken.

This is below the setpoint used in heating mode

dd1-Comp activation diﬀerential

dd2-Comp deactivation diﬀerential

dd3-Min temp for OFF comp in cooling

dd4-Max temp for OFF comp in heating

dd5-Max delay of comp activation

dd6-Min delay of comp activation

dd7-Max delay of comp deactivation

dd8-Min delay of comp deactivation

Deﬁnes the maximum temperature gap to have a minimum delay (dd6) in the compressor’s activation Note: see picture in the parameter ddC and ddH

Deﬁnes the maximum temperature gap to have a minimum delay (dd6) in the compressor’s deactivation Note: see picture in the parameter ddC and ddH

Deﬁnes the minimum temperature below which the compressors are switched oﬀ Note: see picture in the parameter ddC

Deﬁnes the maximum temperature above which the compressors are switched oﬀ Note: see picture in the parameter ddH

Deﬁnes the maximum delay before a compressor cuts in Note: see picture in the parameter ddC and ddH

Deﬁnes the minimum delay before a compressor cuts in Note: see picture in the parameter ddC and ddH

Deﬁnes the maximum delay before a compressor cuts oﬀ Note: see picture in the parameter ddC and ddH

Deﬁnes the minimum delay before a compressor cuts oﬀ Note: see picture in the parameter ddC and ddH

User Guide | Chiller and reversable chiller, reciprocating, scroll and screw compressors

Digital output lock

Parameter: DOn, Ain, Dos, DOd

It is possible to lock a digital output in open position in relation to an analogue input. The lock condition is reported in the rolling text

Functionalities: Enable DO Locking from AI

DOn-Digital output number This is the number of the digital output to lock in open position;

The conditions to lock it are deﬁned by AIn, DOs and DOd

AIn-Analogue input number This is the number of the analogue input to refer to lock the digital output DOn

DOs-Set point for locking This is the setpoint to compare with the value of the analogue input AIn for locking the digital output

DOn; Note: set parameter DOd to lock the digital output DOn above or below the setpoint DOs

DOd-Diﬀerential to unlock

Buzzer and relay

Parameter: BUZ, Adl, AOF

BUZ-Buzzer activation time

number

Adl-Alarm relay activation delay

AOF-Alarm relay active if unit in oﬀ

It's in minutes. Deﬁnes the maximum time that the buzzer can work; BUZ=15 means that there is no limit in the active time of buzzer

It's in seconds. Deﬁnes the delay of the alarm relay when there is an alarm

Deﬁnes whether the alarm relay works in the OFF state of the chiller

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