Carel ir33+ small wide, ir33+, ir33+wide, easy wide, easy small wide User Manual

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Integrated Control Solutions & Energy Savings

ir33+ platform

ir33+, ir33+wide, ir33+ small wide easy wide y easy small wide

Electronic controller

User manual

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

IMPORTANT

CAREL bases the development of its products on decades of experience in HVAC, on the continuous investments in technological innovations to products, procedures and strict quality processes with in-circuit and functional testing on 100% of its products, and on the most innovative production technology available on the market. CAREL and its subsidiaries nonetheless cannot guarantee that all the aspects of the product and the software included with the product respond to the requirements of the  nal application, despite the product being developed according to start-of-the-art techniques. The customer (manufacturer, developer or installer of the  nal equipment) accepts all liability and risk relating to the con guration of the product in order to reach the expected results in relation to the speci c  nal installation and/or equipment. CAREL may, based on speci c agreements, act as a consultant for the positive commissioning of the  nal unit/application, however in no case does it accept liability for the correct operation of the  nal equipment/system.

The CAREL product is a state-of-the-art product, whose operation is speci ed in the technical documentation supplied with the product or can be downloaded, even prior to purchase, from the website www.CAREL.com. Each CAREL product, in relation to its advanced level of technology, requires setup / con guration / programming / commissioning to be able to operate in the best possible way for the speci c application. The failure to complete such operations, which are required/indicated in the user manual, may cause the  nal product to malfunction; CAREL accepts no liability in such cases. Only quali ed personnel may install or carry out technical service on the product. The customer must only use the product in the manner described in the documentation relating to the product.

In addition to observing any further warnings described in this manual, the following warnings must be heeded for all CAREL products:

• Prevent the electronic circuits from getting wet. Rain, humidity and all types of liquids or condensate contain corrosive minerals that may damage the electronic circuits. In any case, the product should be used or stored in environments that comply with the temperature and humidity limits speci ed in the manual.

• Do not install the device in particularly hot environments. Too high temperatures may reduce the life of electronic devices, damage them and deform or melt the plastic parts. In any case, the product should be used or stored in environments that comply with the temperature and humidity limits speci ed in the manual.

• Do not attempt to open the device in any way other than described in the manual.

• Do not drop, hit or shake the device, as the internal circuits and mechanisms may be irreparably damaged.

• Do not use corrosive chemicals, solvents or aggressive detergents to clean the device.

• Do not use the product for applications other than those speci ed in the technical manual.

All of the above suggestions likewise apply to the controllers, serial boards, programming keys or any other accessory in the CAREL product portfolio. CAREL adopts a policy of continual development. Consequently, CAREL reserves the right to make changes and improvements to any product described in this document without prior warning.

The technical speci cations shown in the manual may be changed without prior warning.

The liability of CAREL in relation to its products is speci ed in the CAREL general contract conditions, available on the website www.CAREL.com and/or by speci c agreements with customers; speci cally, to the extent where allowed by applicable legislation, in no case will CAREL, its employees or subsidiaries be liable for any lost earnings or sales, losses of data and information, costs of replacement goods or services, damage to things or people, downtime or any direct, indirect, incidental, actual, punitive, exemplary, special or consequential damage of any kind whatsoever, whether contractual, extra-contractual or due to negligence, or any other liabilities deriving from the installation, use or impossibility to use the product, even if CAREL or its subsidiaries are warned of the possibility of such damage.

DISPOSAL

INFORMATION FOR USERS ON THE CORRECT HANDLING OF WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)

In reference to European Union directive 2002/96/EC issued on 27 January 2003 and the related national legislation, please note that:

• WEEE cannot be disposed of as municipal waste and such waste must be collected and disposed of separately;

• the public or private waste collection systems de ned by local legislation must be used. In addition, the equipment can be returned to the distributor at the end of its working life when buying new equipment;

• the equipment may contain hazardous substances: the improper use or incorrect disposal of such may have negative e ects on human health and on the environment;

• the symbol (crossed-out wheeled bin) shown on the product or on the packaging and on the instruction sheet indicates that the equipment has been introduced onto the market after 13 August 2005 and that it must be disposed of separately;

• in the event of illegal disposal of electrical and electronic waste, the penalties are speci ed by local waste disposal legislation.

Warranty on the materials: 2 years (from the date of production, excluding consumables).

Approval: the quality and safety of CAREL INDUSTRIES Hqs products are guaranteed by the ISO 9001 certi ed design and production system.

WARNING: separate as much as possible the probe and digital input signal cables from the cables carrying inductive loads and power cables to avoid possible electromagnetic disturbance. Never run power cables (including the electrical panel wiring) and signal cables in the same conduits.

NO POWER

& SIGNAL

CABLES

TOGETHER

READ CAREFULLY IN THE TEXT!

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

Content

1. INTRODUCTION 7

1.1 Main features .........................................................................................................7

1.2 Accessories ..............................................................................................................8

2. INSTALLATION 9

2.1 Dimensions .............................................................................................................9

2.2 Panel mounting ....................................................................................................9

2.3 Rear panel mounting .......................................................................................9

2.4 Optional connections ....................................................................................11

2.5 ir33+ wiring diagrams ...................................................................................11

2.6 ir33+ wide and easy wide wiring diagrams ..................................... 13

2.7 ir33+ small wide and easy small wide wiring diagrams ..........13

2.8 Installation ............................................................................................................14

2.9 Programming key (copy set-up) .............................................................14

2.10 Remote display connection.......................................................................15

2.11 Network connection ......................................................................................15

3. USER INTERFACE 16

3.1 Display .....................................................................................................................16

3.2 ir33+ keypad .......................................................................................................17

3.3 ir33+ wide, ir33+ small wide keypad ...................................................17

3.4 easy wide, easy small wide keypad ....................................................... 18

3.5 Programming ......................................................................................................18

4. COMMISSIONING 22

4.1 Con guration......................................................................................................22

4.2 Loading the sets of parameters ...............................................................23

4.3 Preparing for operation ................................................................................ 23

5. FUNCTIONS 24

5.1 Probes (analogue inputs) ............................................................................24

5.2 Digital inputs .......................................................................................................24

5.3 Digital outputs ...................................................................................................28

6. CONTROL 29

6.1 Switching the controller On/O .........................................................29

6.2 Virtual probe ........................................................................................................29

6.3 Set point.................................................................................................................29

6.4 Pump down .........................................................................................................30

6.5 Autostart in pump down ............................................................................31

6.6 Continuous cycle ..............................................................................................31

6.7 Anti-sweat heater .............................................................................................31

6.8 Light and Aux outputs ..................................................................................32

6.9 Defrost .....................................................................................................................32

6.10 Evaporator fans ..................................................................................................34

6.11 Condenser fans ..................................................................................................35

6.12 Duty setting (par. c4) ...................................................................................... 35

6.13 Running time defrost (par. d10, d11) ...................................................35

7. PARAMETER TA BLE 36

7.14 Variables only accessible via serial connection .............................40

8. SIGNALS AND ALARMS 41

8.1 Signals .....................................................................................................................41

8.2 Alarms......................................................................................................................41

8.3 Reset alarms .........................................................................................................41

8.4 HACCP alarms and display .........................................................................41

8.5 Alarm parameters ............................................................................................44

8.6 HACCP alarm parameters and monitoring ......................................44

8.7 High condenser temperature alarm ....................................................45

8.8 Frost protection alarm ...................................................................................45

8.9 Defrost ended by timeout alarm ............................................................ 45

9. TECHNICAL SPECIFIC AT IONS 46

9.1 ir33+ technical speci cations ...................................................................46

9.2 ir33+ wide, ir33+ small wide, easy wide, easy small wide ...........

technical speci cations ................................................................................47

9.3 ir33+ part numbers .........................................................................................48

9.4 ir33+ power part numbers ......................................................................... 48

9.5 ir33+ wide part numbers ............................................................................49

9.6 easy wide part numbers ..............................................................................49

10. APPENDIX 1: VPM VISUAL PARAMETER MANAGER 50

10.1 Installation .......................................................................................................... 50

10.2 Opening the program ................................................................................... 50

10.3 Computer - key connection ......................................................................50

10.4 Programming ......................................................................................................50

10.5 Modify a parameter ........................................................................................51

10.6 Add a set of parameters ............................................................................... 51

10.7 Write parameters .............................................................................................. 51

11. APPENDIX 2: ADVANCED FUNCTIONS 52

11.1 Skip defrost .......................................................................................................... 52

11.2 Variation of the defrost interval ............................................................... 52

11.3 Defrost with 2 evaporators .........................................................................53

11.4 Second compressor with rotation ......................................................... 53

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

1. INTRODUCTION

The ir33+ platform for refrigeration applications comprises a series of microprocessor-based parametric electronic controllers, with LED display, designed to control stand-alone refrigeration units. Three ranges are available:

• ir33+;

• ir33+ wide and ir33+ small wide;

• easy wide and easy small wide.

which share the same software and di er in terms of shape, user interface and the number of outputs. These controllers are especially suitable for applications requiring high load switching power, functions and control with direct access from the keypad, high IP ingress protection and compact dimensions. In terms of reliability, all the controllers are  tted with an electronic device (watchdog) that prevents the microprocessor from losing control, even with high levels of electromagnetic disturbance. The ir33+ platform is made using the most advanced SMD technology, and electrical testing of all the components  tted guarantees high quality standards.

In summary:

• up to 5 relay outputs on the more complete models: compressor, fan,

defrost, AUX1, AUX2;

• panel installation (front panel as standard) or rear panel with separate

 exible keypad (can be customised);

• simple installation with two plastic fastening brackets (ir33+, ir33+

wide, ir33+ small wide) or with screws from the front (easy wide, easy small wide);

• buttons  ush with the front panel, to ensure high ingress protection

(IP65) and safety during operation and cleaning;

• bright 3 digit display, with decimal point and icons to denote operating

status;

• immunity to brief power interruptions: if the controller detects that

voltage drops below a certain threshold, the display is temporarily switched o and the controller continues working normally;

• keypad with 4 (ir33+), 8 (ir33+ wide, ir33+small wide) or 9 buttons

(easy wide, easy small wide);

• defrosts can be activated from the keypad, digital input, supervisor;

• management of various types of defrost, on one or two evaporators:

natural (stopping the compressor), heater, hot gas;

• advanced defrost functions;

• automatic recognition of the network protocol: Carel or Modbus®;

• parameter selection simpli ed by di erent icons according to the

category;

• temperature control with virtual control probe and set point variation

at night;

• digital inputs to activate alarms, enable or activate defrosts, door /

curtain switch, auxiliary output, on/o , etc.;

• control of 1 compressor with two steps, or two compressors, including

rotation;

• keypad protection: the functions of the individual buttons can be

disabled to prevent unwanted tampering;

• management of the light in the cabinet/cold room and the curtain on

the cabinet;

• VPM program (Visual Parameter Manager), running on a personal

computer, used to update the parameters and test the controller;

• alarm signal buzzer;

• HACCP functions: temperature monitoring and recording in the event

of high temperature alarms during operation and after blackouts;

• RS485 serial network connection to remote supervisor and

telemaintenance systems.

The models di er in terms of:

• the type of power supply: alternating current (12 V~, 12 to 24 V~, 115

V~, 115/230 V~, 230 V~, 50/60 Hz); direct current (12/18 Vdc, 12/30 Vdc);

• the number of relay outputs;

• the type of probes that can be connected: NTC or NTC/PTC;

• the type of terminals:  xed screw, plug-in or spade terminals.

Available accessories include:

• serial interface card (P/N IROPZ48500) for connection to the RS485

network;

• programming key (P/N IROPZKEY**) for reading (upload) and writing

(download) the control parameters;

• display interface (P/N IROPZDSP00) for remote display connection.

1.1 Main features

The ir33+ platform controllers are designed to o er maximum installation  exibility. In addition to the control probe, a further three probes can be con gured, as product probe (display only), condenser, frost protection and defrost probe. Using the advanced defrost functions, if the conditions are right, subsequent defrosts can be postponed or skipped. The digital outputs (relays) can control the solenoid valve or compressor, a second compressor, the evaporator or condenser fans, defrosts, lights and alarms. The digital inputs can be used for the door switch and light management, the curtain switch to change over to night-time operation, to enable and start defrosts, to switch the controller on/o and to activate of the auxiliary output. Finally, the controller can also be used as simple ON/OFF thermostat, for heating applications.

Example: vertical display case and cold room.

Fig. 1.a

Fig. 1.b

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

1.2 Accessories

IROPZKEY00/A0 programming key

The IROPZKEY00 and IROPZKEY00A0 (powered) programming keys can be used with the ir33+ platform controllers. Visual Parameter Manager (VPM) allows up to 7 di erent con gurations (sets) of parameters to be loaded onto the controller (the controller operating parameters plus 6 sets of customisable parameters). The read/write operations are carried out with the controller o .

IROPZKEY00 IROPZKEYA0

Fig. 1.c Fig. 1.d

Connection cable (P/N PSTCON0*B0)

Three-wire cable to connect the controller to the tLAN interface card (P/N IROPZDSP00). Available in di erent lengths: 1.5; 3; 5 m.

Fig. 1.e

tLAN interface card (P/N IROPZDSP00)

The tLAN interface card for remote display is an electronic device used to connect the controller to a remote display. See the instruction sheet (+050003860).

Fig. 1.f

Remote display

The remote display can be used to display one of the system variables. Versions are available for ir33+ (P/N IREVXGD000) and ir33+ wide, ir33+ wide small, easy wide, easy small wide (P/N PST00VR100). See the instruction sheet (+050003920).

IREVXGD000 PST00VR100

Fig. 1.g Fig. 1.h

RS485 serial interface (P/N IROPZ48500 and IROPZ485S0)

Plugged directly into the programming key connector, this provides connection to the PlantVisor supervisory system. The accessory has been designed as a plug-in addition to the controller and consequently can be installed following installation if needed. Model IROPZ485S0 features a microprocessor and can automatically recognise the TxRx+ and TxRx- signals (reverse connection).

Fig. 1.i

VPM programming tool (Visual Parameter Manager)

The program can be downloaded from http://ksa.carel.com. The tool runs on a computer and is used to set up the controller, change the parameter settings and update the  rmware. The USB/I2C converter P/N IROPZPRG00 is required.

Fig. 1.j

USB/I2C converter and cable (P/N IROPZPRG00)

Converter used to connect a personal computer to an IROPZKEY00/ A0 programming key, and consequently use the VPM program (Visual Parameter Manager) to read, set and write the parameters. The programming key can then be used to program the controllers or read the controller parameters, and for example copy a con guration from one controller to the others.

Fig. 1.k

Light sensor (P/N PSOPZLHT00)

To be installed in the door jamb or inside the cold room

Fig. 1.l

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

2. INSTALLATION

2.1 Dimensions

ir33+

dima di foratura drilling template

71x29 mm

34.7

79.5

76.2

80.6

38.6

Version E, A

Fig. 2.a

ir33+ wide

dima di foratura drilling template

138.5 x 29 mm

143

147

Fig. 2.b

ir33+ small wide

47.5

dima di foratura drilling template

138.5 x 29 mm

143

147

Fig. 2.c

Easy wide

182

140

29.2

138.4

165

dima di foratura drilling template

Fig. 2.d

Easy small wide

182

140

47.5

drilling template dima di foratura

29.2

138.4 165

Fig. 2.e

2.2 Panel mounting

To install the ir33+, ir33+ wide and ir33+ small wide controllers, use the 2 brackets shown in the  gure.

Fig. 2.f

2.3 Rear panel mounting

The models with separate membrane keypad (e.g. keypad part numbers 62C716A084 and 62C716A085) should be rear panel mounted, with the membrane keypad  tted from the front; electrical connection is performed using the ribbon cable, sliding it through the opening provided. ir33+ and +ir33+ wide models require side brackets, inserting the fastening screws; easy wide and easy small wide models have holes on the side, accessible after having removed the frame.

ir33+

STEP 1

Drill the holes (ø 3 mm) with the spacing shown in the  gure and make the opening for inserting the ribbon cable.

53 mm 14,5 mm

98 mm

Fig. 2.g

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

STEP 2

Apply the side fastening brackets to the controller and use the screws to fasten it to the panel.

Fig. 2.h

STEP 3

Insert the ribbon cable in the opening, attach the connectors and apply the membrane keypad.

Fig. 2.i

ir33+ wide, ir33+ small wide

Installation similar to ir33+.

165 mm

21 mm

55 mm

26,1 mm

Fig. 2.j

easy wide, easy small wide

STEP 1

Apply the two covered brackets to the controller. Drill the holes with the spacing shown in the  gure and make the opening for inserting the ribbon cable. Two screw studs must be  tted inside the panel.

165 mm

21 mm

from 25 to 26 mm

from 53,5 to 55,5 mm

Fig. 2.k

STEP 2

Fasten the controller to the panel using the nuts and attach the connectors.

Fig. 2.l

STEP 3

Insert the ribbon cable in the opening and apply the membrane keypad.

Fig. 2.m

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

6 71 2 3 8 9 10 11 12

PROBES DI DI

12 12

12 (2) A 12A 5FLA

30LRA

EN60730-1 UL 873

AUX

-10T60

250 V~

Ixxxxx0xxxx: 12 V~ 300 mA~ max, 12...18 Vdc 300 mA dc max IxxxxxLxxxx: 12...24 V~ 300 mA~ max, 12...30 Vdc 300 mA dc max

tLAN interface

SERIAL and KEY

IxxxM(0,7) (0,L) (A,L) (0,2)xx

IxxxM(0,7) (L) (N,C) (0,2)xx senza/without R1

POWER SUPPLY

Fig. 2.r

Thermostats with 1/2 relays: compressor, aux

SERIAL and KE

PROBES DI

9 10 11 12

12 1

43 5 7 86

AUX

R1 R2

12 (2) A 12A 5FLA

30LRA

EN60730-1 UL 873

5 (1) A 5A 1FLA

6LRA

IxxxxxExxxx: 230 V~ 25 mA~ max IxxxxxAxxxx: 115 V~ 50 mA~ max

-10T60

POWER SUPPLY

250 V~

Corrente massima totale su terminale 5: 12 A Maximum current on terminal 5: 12 A

IxxxS(0,7) (E,A) (V,Y) (0,1,2,3,5)xx

IxxxS(0,7) (E,A) (P,S) (0,1,2,3,5)xx senza/without R2

Fig. 2.s

PROBES DI

9 10 11 12

12 1

L N

R1 R2

8 (4) A 8A 2FLA

12LRA

1 3 4 5 6 7 8

R1 R2

8 (4) A 8A 2FLA

12LRA

EN60730-1 UL 873

AUX

-10T60

POWER SUPPLY

250 V~

IxxxS(0,7) (E,A) (A,L) (0,1,2,3,5)xx

IxxxS(0,7) (E,A) (N,C) (0,1,2,3,5)xx senza/without R2

Corrente massima totale su terminale 1: 12 A Maximum current on terminal 1: 12 A

IxxxxxExxxx: 230 V~ 25 mA~ max IxxxxxAxxxx: 115 V~ 50 mA~ max

SERIAL and KE

Fig. 2.t

6 7

8 (4) A 8A 2FLA

12LRA

1 2 3 4 5 8 9 10 11 12

PROBES DI DI

12 12

R1 R2

12 (2) A 12A 5FLA

30LRA

EN60730-1 UL 873

AUX

-10T60

POWER SUPPLY

250 V~

Corrente massima totale su terminale 3: 12 A Maximum current on terminal 3: 12 A

115...230 V~ 50 mA~ max

tLAN interface

SERIAL and KEY

IxxxS(0,7) H (A,L) (0,2) xx

Fig. 2.u

2.4 Optional connections

ir33+

IROPZDSP00:

Opzione interfaccia display

IROPZ48500:

Interfaccia scheda

seriale RS485

IROPZKEY**:

Chiave di programmazione

Fig. 2.n

ir33+ wide/ easy wide

IROPZDSP00:

Opzione interfaccia display

Display interface option

IROPZ485S0:

Interfaccia scheda seriale

RS485 intelligente

Smart serial board

interface RS485

IROPZKEY**:

Chiave di programmazione

Programming key

Fig. 2.o

ir33+ small wide/ easy small wide

IROPZDSP00: Opzione interfaccia display

Display interface option

IROPZ48500: Interfaccia scheda seriale RS485

Serial board interface RS485

IROPZKEY**: Chiave di programmazione

Programming key

Fig. 2.p

2.5 ir33+ wiring diagrams

Thermometers

11 12

PROBES DI

12 1

8 (4) A 8A 2FLA

12LRA

AUX

EN60730-1 UL 873

1 2 4

-10T60

POWER

SUPPLY

250 V~

IxxxxxExxxx: 230 V~ 25 mA~ max IxxxxxAxxxx: 115 V~ 50 mA~ max IxxxMx0(N,C)xxx: 12 V~ 300 mA~ max, 12...18 Vdc 300 mA dc max

SERIAL and KEY

IxxxM(0,7) (E,A,0) (N,C) (0,1,2,3,5)xx senza/without R1 IxxxM(0,7) (E,A) (A,L) (0,1,2,3,5)xx

Fig. 2.q

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

6 7

8 (4) A 8A 2FLA

12LRA

8 (4) A 8A 2FLA

12LRA

1 2 3 4 5 8 9 10 11 12

13 14 15

PROBES DI DI

12 12

R1 R2

R1 R2 R3

12 (2) A 12A 5FLA

30LRA

EN60730-1 UL 873

AUX

12 A max

-10T60

250 V~

Corrente massima totale su terminale 3: 12 A Maximum current on terminal 3: 12 A

Ixxxxx0xxxx: 12 V~ 300 mA~ max, 12...18 Vdc 300 mA dc max IxxxxxLxxxx: 12...24 V~300 mA~ max, 12...30 Vdc 300 mA dc max

tLAN interface

SERIAL and KEY

IxxxY(0,7) (0,L) (A,L) (0,2)xx

IxxxY(0,7) (0,L) (N,C) (0,2)xx senza/without R3

Fig. 2.z

Thermostats with 3 relays: compressor, defrost, evaporator fans

PROBES DI

9 10 11 12

12 1

L N

R3 R1 R2

8 (4) A 8A 2FLA

12LRA

1 3 4 5 6 7 8

R1 R2 R3

8 (4) A 8A 2FLA

12LRA

EN60730-1 UL 873

5 (1) A 5A 1FLA

6LRA

-10T60

POWER SUPPLY

250 V~

Corrente massima totale su terminale 1: 12 A Maximum current on terminal 1: 12 A

IxxxxxExxxx: 230 V~ 25 mA~ max IxxxxxAxxxx: 115 V~ 50 mA~ max

SERIAL and KEY

IxxxF(0,7) (E,A) (N,C) (0,1,2,3,5)xx

Fig. 2.aa

6 7

8 (4) A 8A 2FLA

12LRA

8 (4) A 8A 2FLA

12LRA

1 2 3 4 5 8 9 10 11 12

13 14 15

PROBES DI DI

12 12

R1 R2

R1 R2 R3

12 (2) A 12A 5FLA

30LRA

EN60730-1 UL 873

-10T60

POWER SUPPLY

250 V~

Corrente massima totale su terminale 3: 12 A Maximum current on terminal 3: 12 A

115...230 V~ 50 mA~ max

tLAN interface

SERIAL and KEY

IxxxF(0,7) H (N,C) (0,2)xx

Fig. 2.ab

6 7

8 (4) A 8A 2FLA

12LRA

8 (4) A 8A 2FLA

12LRA

1 2 3 4 5 8 9 10 11 12

13 14 15

PROBES DI DI

12 12

R1 R2

R1 R2 R3

12 (2) A 12A 5FLA

30LRA

EN60730-1 UL 873

-10T60

250 V~

Corrente massima totale su terminale 3: 12 A Maximum current on terminal 3: 12 A

Ixxxxx0xxxx: 12 V~ 300 mA~ max, 12...18 Vdc 300 mA dc max IxxxxxLxxxx: 12...24 V~ 300 mA~ max, 12...30 Vdc 300 mA dc max

tLAN interface

SERIAL and KEY

IxxxF(0,7) (0,L) (N,C) (0,2)xx

Fig. 2.ac

6 7

tLAN interface

8 (4) A 8A 2FLA

12LRA

1 2 3 4 5 8 9 10 11 12

PROBES DI DI

12 12

R1 R2

12 (2) A 12A 5FLA

30LRA

EN60730-1 UL 873

AUX

-10T60

250 V~

Corrente massima totale su terminale 3: 12 A Maximum current on terminal 3: 12 A

Ixxxxx0xxxx: 12 V~ 300 mA~ max, 12...18 Vdc 300 mA dc max IxxxxxLxxxx: 12...24 V~ 300 mA~ max, 12...30 Vdc 300 mA dc max

SERIAL and KEY

IxxxS(0,7) (0,L) (A,L) (0,2)xx

IxxxS(0,7) (0,L) (N,C) (0,2)xx senza/without R2

Fig. 2.v

Thermostats with 2/3 relays: compressor, defrost, AUX

PROBES DI

9 10 11 12

12 1

43 5 7 86

R1 R2

12 (2) A 12A 5FLA

30LRA

EN60730-1 UL 873

250 Vac

5 (1) A 5A 1FLA

6LRA

-10T60

POWER SUPPLY

250 V~

Corrente massima totale su terminale 5: 12 A Maximum current on terminal 5: 12 A

IxxxxxExxxx: 230 V~ 25 mA~ max IxxxxxAxxxx: 115 V~ 50 mA~ max

SERIAL and KE

IxxxY(0,7) (E,A) (P,S) (0,1,2,3,5)xx

Fig. 2.w

Corrente massima totale su terminale 1: 12 A Maximum current on terminal 1: 12 A

IxxxY(0,7) (E,A) (N,C) (0,1,2,3,5)xx senza/without R3 IxxxY(0,7) (E,A) (N,C) (0,1,2,3,5)xx

SERIAL and KEY

PROBES DI

9 10 11 12

12 1

AUX

L N

R3 R1 R2

8 (4) A 8A 2FLA

12LRA

5 (1) A 5A 1FLA

6LRA

1 3 4 5 6 7 8

R1 R2 R3

8 (4) A 8A 2FLA

12LRA

EN60730-1 UL 873

Fig. 2.x

6 7

8 (4) A 8A 2FLA

12LRA

8 (4) A 8A 2FLA

12LRA

1 2 3 4 5 8 9 10 11 12

13 14 15

PROBES DI DI

12 12

R1 R2

R1 R2 R3

12 (2) A 12A 5FLA

30LRA

EN60730-1 UL 873

AUX

-10T60

POWER SUPPLY

250 V~

Corrente massima totale su terminale 3: 12A Maximum current on terminal 3: 12 A

115...230 V~ 50 mA~ max

tLAN interface

SERIAL and KEY

xxxY(0,7) H (

A,L) (0,2)xx

IxxxY(0,7) H (N,C) (0,2)xx senza/without R3

Fig. 2.y

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

Thermostats with 3/4 relays: compressor, defrost, evap. fans, AUX

PBEVF(0,6)E(P,S)

Fig. 2.ah

PBEVF(0,6)H(A,L)

Fig. 2.ai

Thermostats with 4 relays: compressor, defrost, evap. fans, AUX

PBEVC(0,6)H(N,C)

Fig. 2.aj

Thermostats with 5 relays: compressor, defrost, evap. fans, AUX1, AUX2

PBEVH(0,6)H(N,C)

Fig. 2.ak

2.7 ir33+ small wide and easy small wide wiring diagrams

Thermostats with 1/2 relays: compressor, AUX

PBEVS(0,6)S(A,L)

Fig. 2.al

PBEVS(0,6)S(N,C)

Fig. 2.am

Thermostats with 4 relays: compressor, defrost, evaporator fans, AUX

6 7

8 (4) A 8A 2FLA

12LRA

8 (4) A 8A 2FLA

12LRA

8 (4) A 8A 2FLA

12LRA

1 2 3 4 5 8 9 10 11 12

13 14 15 16 17 18

PROBES DI DI

AUX

12 12

R3R1R4

R1 R2 R3 R4

12 (2) A 12A 5FLA

30LRA

EN60730-1 UL 873

-10T60

POWER SUPPLY

250 V~

Corrente massima totale su terminale 3: 12 A Maximum current on terminal 3: 12 A

115...230 V~ 50 mA~ max

tLAN interface

SERIAL and KEY

IxxxC(0,7) H (N,C) (0,2)xx

Fig. 2.ad

6 7

8 (4) A 8A 2FLA

12LRA

8 (4) A 8A 2FLA

12LRA

8 (4) A 8A 2FLA

12LRA

1 2 3 4 5 8 9 10 11 12

13 14 15 16 17 18

PROBES DI DI

AUX

12 12

R3R1R4

R1 R2 R3 R4

12 (2) A 12A 5FLA

30LRA

EN60730-1 UL 873

-10T60

250 V~

Ixxxxx0xxxx: 12 V~ 300 mA~ max, 12...18 Vdc 300 mA dc max IxxxxxLxxxx: 12...24 V~ 300 mA~ max, 12...30 Vdc 300 mA dc max

tLAN interface

SERIAL and KEY

IxxxC(0,7) (0,L) (N,C) (0,2)xx

Corrente massima totale su terminale 3: 12 A Maximum current on terminal 3: 12 A

Fig. 2.ae

Key

L Line N Neutral R1/R2/R3/R4 Digital output 1/2/3/4 (relay 1/2/3/4) AUX Auxiliary relay PROBES Probe 1/Probe 2 DI1/DI2 Digital input 1/ Digital input 2

2.6 ir33+ wide and easy wide wiring diagrams

Thermostats with 1/2 relays: compressor, AUX

PBEVS(0,6)E(V,Y)

Fig. 2.af

Thermostats with 3 relays: compressor, defrost, AUX

PBEVY(0,6)E(V,Y)

Fig. 2.ag

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

Warnings: avoid installing the controller in environments with the

following characteristics:

• relative humidity greater than 90% non-condensing;

• strong vibrations or knocks;

• exposure to continuous water sprays;

• exposure to aggressive and polluting atmospheric agents (e.g.: sulphur

and ammonia gases, saline mist, smoke) which may cause corrosion and/or oxidation;

• strong magnetic and/or radio frequency interference (for example ,

near transmitting antennae);

• exposure to direct sunlight and the elements in general.

The following warnings must be observed when connecting the controllers:

• incorrect connection of the power supply may seriously damage the

controller;

• use cable ends suitable for the corresponding terminals. Loosen each

screw and insert the cable ends, then tighten the screws and gently pull the cables to check their tightness. When tightening the screws, do not use automatic screwdrivers, rather adjust tool tightening torque to less than 0.5Nm;

• separate as much as possible (by at least 3 cm) the probe signal and

digital input cables from inductive loads and power cables, to avoid any electromagnetic disturbance. Never lay power cables and probe cables in the same cable conduits (including those for the electrical panels). Do not install the probe cables in the immediate vicinity of power devices (contactors, circuit breakers or the like). Reduce the length of the sensor cables as much as possible, and avoid spirals around power devices;

• only use IP67 guaranteed probes as end defrost probes; place the

probes with the vertical bulb upwards, so as to facilitate drainage of any condensate. Remember that thermistor temperature probes (NTC) have no polarity, so the order the ends are connected in is not important.

Important: for 12 Vac and 12/24 Vac versions. When connecting a series of units to the same timer, insulate all the contacts (digital inputs) galvanically, inserting an intermediate relay for each contact.

Cleaning the controller

When cleaning the controller do not use ethanol, hydrocarbons (petrol), ammonia and by-products. Use neutral detergents and water.

2.9 Programming key (copy set-up)

Programming key IROPZKEY00/A0

The programming key can load up to 7 di erent parameter con gurations onto the controller (the controller operating parameters plus 6 sets of customisable default parameters). The keys are plugged into the connector (4 pin AMP) available on the controllers. All the operations can be performed with the controller o .

Fig. 2.aq

The functions are selected by setting the two dipswitches, accessible by removing the battery cover.

Thermostats with 2/3 relays: compressor, defrost, AUX

PBEVY(0,6)S(A,L)

Fig. 2.an

Thermostats with 3 relays: compressor, defrost, evap. fans

PBEVF(0,6)S(N,C)

Fig. 2.ao

Thermostats with 3/4 relays: compressor, defrost, evap. fans, AUX

PBEVC(0,6)S(N,C)

Fig. 2.ap

Key

L Line N Neutral R1/R2/R3/R4/R5 Digital output 1/2/3/4/5 (relay 1/2/3/4/5) AUX Auxiliary relay PROBES Probe 1/Probe 2 DI1/DI2 Digital input 1/ Digital input 2

2.8 Installation

To install the controller, proceed as follows, with reference to the wiring diagrams shown in the previous paragraphs:

1. connect the probes and power supply: the probes can be installed up

to a maximum distance of 10 m from the controller, using shielded cables with a minimum cross-section of 1 mm. To improve immunity to disturbance, use probes with shielded cables (connect only one end of the shield to the earth on the electrical panel);

2. program the controller: as shown in the chapters “Commissioning” and

“User interface”;

3. connect the actuators: the actuators should only be connected after

having programmed the controller. Carefully check the maximum relay capacities, as indicated in the “technical speci cations”;

4. serial network connection: all controllers are  tted with a serial

connector for connection to the supervisor network via the serial interface (IROPZ485*0). The secondary of the transformers that supply the controllers must not be earthed. If connection to a transformer with earthed secondary winding is required, an insulating transformer must be installed in between.

Important: a separate transformer must be used for each controller,

- NEVER connect multiple controllers to the same transformer.

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

2.10 Remote display connection

To connect the remote display, use the dedicated cable (P/N PSTCON0*B0) and the tLAN interface card (P/N IROPZDSP00). See the following diagram. Also set a value >0 for parameter /tE, to display the reading on the remote display.

Par. Description Def Min Max UOM

/tE Reading on remote display 0 6 6 -

0 Not  tted 4 Probe 3 1 Virtual probe 5 Probe 4 2 Probe 1 6 Reserved 3 Probe 2

Tab. 2.b

2.11 Network connection

Warnings:

• the RS485 converter (IROPZ485x0) is sensitive to electrostatic

discharges and therefore must be handled with extreme care;

• check the documents on the IROPZ485x0 interface for connection

instructions, so as to avoid damaging the controller;

• fasten the converter properly so as to prevent disconnection;

• complete the wiring without power connected;

• keep the IROPZ485x0 interface cables separate from the power cables

(relay outputs and power supply).

The RS485 converter is used to connect the ir33+, ir33+ wide and easy wide controllers to the supervisor network for the complete management and monitoring of the connected controllers. The system allows a maximum of 207 units, with a maximum length of 1000 m. Connection requires the standard accessories (RS485-USB converter, CAREL P/N CVSTDUMOR0) and a 120  terminating resistor to be installed on the terminals of the last connected controller. Connect the RS485 converter to the controllers and make the connections as shown in the  gure. To assign the serial address, see parameter H0. See the instruction sheets on the converters for further information.

Fig. 2.ar

UPLOAD DOWNLOAD EXTENDED DOWNLOAD

• load the parameters from a controller onto the key (UPLOAD);

• copy from the key to a controller (DOWNLOAD);

• extended copy from the key to a controller (EXTENDED DOWNLOAD).

Important: The parameters can only be copied between controllers with the same part number. The UPLOAD operation can, however, always be performed.

Copying and downloading the parameters

The following operations are used for the UPLOAD and/or DOWNLOAD functions, simply by changing the settings of the dipswitches on the key:

1. open the rear cover on the key and position the 2 dipswitches

according to the desired operation;

2. close the rear cover on the key and plug the key into the connector

on the controller;

3. press the button and check the LED: red for a few seconds, then

green, indicates that the operation was completed correctly. Other signals or the  ashing of the LED indicates that problems have occurred: see the table below;

4. at the end of the operation, release the button, after a few seconds

the LED goes o ;

5. remove the key from the controller.

LED signal Error Meaning and solution

Red LED  ashing

Batteries discharged at start copy

The batteries are discharged, the copy operation cannot be performed. Replace the batteries.

Green LED  ashing

Batteries discharged during copy or at end of copy

During the copy operation or at the end of the operation the battery level is low. Replace the batteries and repeat the operation.

Red/green LEDs  ashing (orange signal)

Controller not compatible

The parameter set-up cannot be copied as the connected controller model is not compatible. This error only occurs for the DOWNLOAD function; check the controller P/N and run the copy only for compatible models.

Red and green LEDs on

Error in data being copied

Error in the data being copied. The EEPROM on the controller is corrupted, therefore the data cannot be copied to/from the key.

Red LED on steady

Data transfer error The copy operation was not com-

pleted due to a serious error when transferring or copying the data. Repeat the operation, if the problem persists check the key connections.

LEDs o Batteries disconnected Check the batteries.

Tab. 2.a

Note: the DOWNLOAD operation (normal or extended) is possible even if the operating and control parameters are incorrect; in this case, they will be recovered from the key. Be careful when recovering the unit parameters from a key, as these determine the low-level operation of the controller (unit model, type of interface, assignment of logical relay to physical relay, brightness of the display, level of modulation of the relay control signal …). The unit parameters from the original model must therefore be restored to ensure correct operation of the controller.

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

3. USER INTERFACE

The front panel contains the display and the keypad, made up of 4 buttons (ir33+), 8 buttons (easy wide, easy small wide) or 9 buttons (ir33+ wide, ir33+ small wide) that, when pressed alone or combined with other buttons, are used to program the controller. The optional remote display is used to display the temperature measured by a second probe.

User terminal Remote display

ir33+ IREVXGD000

AUX

Fig. 3.a Fig. 3.b

ir33+ wide, ir33+ small wide PST00VR100

Fig. 3.c Fig. 3.d

easy wide, easy small wide PST00VR100

aux

prg

mute

Fig. 3.a Fig. 3.b

3.1 Display

The user terminal display shows temperature in range -50 to +150°C.The temperature is displayed with resolution to the tenths between –19.9 and + 19.9 °C. In the event of alarms, the value of the probe is displayed alternating with the codes of the active alarms. During programming, the terminal shows the codes and values of the parameters. The remote display IREVXGD000 / PST00VR100 shows the temperature with resolution to the tenths between -9.9°C and19.9°C.

Note: the standard display on the user terminal and the remote

display can be selected by setting parameters /tI and /tE accordingly.

Icon Function Normal operation Start-up Notes

ON OFF Flashing

Compressor On O Awaiting activation Flashes when activation is delayed or inhibi-

ted by protection times

Fan On O Awaiting activation Flashes when activation is delayed by

protection times or other procedures in progress

Defrost Active - Awaiting Flashes when activation is delayed by

protection times or other procedures in progress

AUX output AUX output 1 or 2 active - Anti-sweat heater function active

Alarm On if delayed alarm from digital

input

- Alarms during normal operation (e.g. high/low temperature alarm) or in the event of malfunctions (on together with the spanner icon)

Clock On if a timed defrost has been set. If

the real time clock is  tted, the icon is displayed for a few seconds during the third stage of the start-up procedure

Clock alarm ON if RTC

available

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

Icon Function Normal operation Start-up Notes

ON OFF Flashing

Light Auxiliary output (1 and/or 2) con -

gured as light active

- Anti-sweat heater function active

Service Malfunctions, e.g. EEPROM errors

or faulty probes

HACCP HACCP function enabled - HACCP alarm saved (HA and/

or HF)

Continuous cycle

Continuous cycle function active - Function called Flashes when activation is delayed or inhibi-

ted by protection times

Tab. 3.c

3.2 ir33+ keypad

Button

Normal operation

Start-up

Pressing the button alone Pressing together with other buttons

PRG/MUTE

If pressed for more than 3 seconds, accesses the type “F” parameters (frequent) or the menu for setting the password to access the type “C” parameters (Con guration); if there is an active alarm: mutes the audible alarm (buzzer).

PRG+ON-OFF/UP: if pressed together for more than 3 seconds, resets any alarms with manual reset

if pressed and held for more than 5 seconds at start-up, activates the procedure for setting the default parameters

ON-OFF/

If pressed for more than 3 seconds, switches the controller OFF; if pressed for more than 1 s switches the controller ON; when setting the parameters, increases the value displayed or scrolls to the next parameter.

ON-OFF/UP+AUX/DOWN: if pressed together for more than 3 seconds, activates/deactivates the continuous cycle; ON-OFF/UP+ SET/DEF: if pressed together for more than 3 seconds, displays the temperature read by the defrost probe; ON-OFF/UP+ PRG/MUTE: if pressed together for more than 3 seconds, resets any alarms with manual reset.

AUX/

DOWN

If pressed for more than 1 s, activates/deactivates the auxiliary output; when setting the parameters, decreases the value displayed or scrolls to the previous parameter.

AUX/DOWN + ON-OFF/UP: if pressed together for more than 3 seconds, activates/deactivates the continuous cycle; AUX/DOWN + SET/DEF: if pressed together for more than 1 second, displays a submenu used to access the HACCP alarm parameters.

SET/DEF

If pressed for more than 1 s, displays and/or lets the user set the set point; if pressed for more than 5 s, starts a manual defrost.

SET/DEF+ AUX/DOWN: if pressed together for more than 1 second, displays a submenu used to access the parameters relating to the HACCP alarms; SET/DEF+ ON-OFF/UP: if pressed together for more than 3 seconds, displays the temperature read by the defrost probe.

Tab. 3.d

3.3 ir33+ wide, ir33+ small wide keypad

Button

Normal operation

Start-up

Pressing the button alone Pressing together with other buttons

PRG

If pressed for more than 3 seconds, accesses the type “F” parameters (frequent) or the menu for setting the password to access the type “C” parameters (Con guration)

PRG+UP/CC: if pressed together for more than 3 seconds, resets any alarms with manual reset

if pressed and held for more than 5 seconds at power on, activates the procedure for setting the default parameters

MUTE

Mutes the audible alarm (buzzer) and deactivates the alarm relay

MUTE+UP/CC: if pressed together for more than 3 seconds, resets any alarms with manual reset

ON-OFF

If pressed for more than 3 seconds, switches the controller ON/OFF

AUX

If pressed for more than 1 s, activates/deactivates the auxiliary output

DOWN/DEF

If pressed for more than 3 seconds, activates/deactivates the manual defrost

UP/CC

If pressed for more than 3 seconds, activates/deactivates the continuous cycle

UP/CC+MUTE or PRG+UP/CC: if pressed together for more than 3 seconds, resets any alarms with manual reset; UP/CC+SET: if pressed together for more than 3 seconds, displays the defrost temperature

SET

If pressed for more than 1 s, displays and/or sets the set point SET+UP/CC: if pressed together for more than 3 seconds, displays the defrost tem-

perature

LIGHT

If pressed for more than 1 s, activates/deactivates the auxiliary output 2

HACCP

Accesses the menu to display and delete the HACCP alarms

Tab. 3.e

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

3.4 easy wide, easy small wide keypad

Button

Normal operation

Start-up

Pressing the button alone Pressing together with other buttons

PRG/MUTE

If pressed for more than 3 seconds, accesses the type “F” parameters (frequent) or the menu for setting the password to access the type “C” parameters (Con guration); mutes the audible alarm (buzzer) and deactivates the alarm relay

PRG/MUTE+UP/CC: if pressed together for more than 3 seconds, resets any alarms with manual reset

If pressed for more than 3 seconds, at power on, activates the procedure for setting the default parameters

ON-OFF

If pressed for more than 3 seconds, switches the controller ON/OFF

AUX

If pressed for more than 1 s, activates/deactivates the auxiliary output

DOWN/DEF

If pressed for more than 5 s, activates/deactivates the manual defrost

UP/CC

If pressed for more than 3 seconds, activates/deactivates the continuous cycle

UP/CC+MUTE: if pressed together for more than 3 seconds, resets any alarms with manual reset; UP/CC+SET: if pressed together for more than 3 seconds, displays the defrost temperature

SET

If pressed for more than 1 s, displays and/or sets the set point

LIGHT

If pressed for more than 1 s, activates/deactivates the auxiliary output

HACCP

Accesses the menu to display and delete the HACCP alarms

Tab. 3.f

3.5 Programming

The operating parameters can be modi ed using the front keypad. Access di ers depending on the type: set point, frequently-used parameters (F) and con guration parameters (C). The type of parameter is speci ed in the table of parameters. Access to the con guration parameters is protected by a password for the con guration parameters that prevents unwanted modi cations or access by unauthorised persons. The password can be used to access and set all the control parameters.

Setting the set point

To change the set point St (default =0°C):

• press Set for more than 1 s: the display shows Set and then the current

value of St;

• press UP/DOWN until reaching the desired value;

• press Set to save the new value of St.



Setting type F parameters

Type F parameters include the set point, di erential, temperature monitoring interval, interval between defrosts, end defrost temperature, dripping time, alarm thresholds, alarm bypass times, etc. See the parameter table. Procedure:

1. press Prg/Mute one or more times to return to the standard display;

2. press Prg/Mute for more than 3 seconds (if an alarm is active, the

buzzer is muted): the display will show the code PS (Password) and the number 0;

3. press Set, the display shows parameter St;

4. press UP or DOWN until reaching the desired parameter: when

scrolling, an icon is displayed that represents the category the parameter belongs to (see the table below and the parameter table);

5. press Set to display the value of the parameter;

6. press UP/DOWN until reaching the desired value;

7. press Set to temporarily save the new value and display the parameter

code again;

8. Repeat steps 4) to 7) to set other parameters;

9. To permanently save the new values of the parameters, press Prg/

Mute for 5 seconds. This exits the parameter setting procedure.



Setting type C parameters

Type C parameters include the type F parameters plus all the other control parameters. Procedure:

1. press Prg/Mute one or more times to return to the standard display;

2. press Prg/Mute for more than 3 seconds (if an alarm is active, the

buzzer is muted): the display will show the code PS (Password) and the number 0;

3. press UP/DOWN and enter the password: 22. Press Set, the display

shows parameter /2;

4. press UP or DOWN until reaching the desired parameter: when

scrolling, an icon is displayed that represents the category the parameter belongs to (see the table below and the parameter table);

5. press the SET button to display the value of the parameter;

6. press UP/DOWN until reaching the desired value;

7. press Set to temporarily save the new value and display the parameter

code again;

8. repeat steps 4) to 7) to set other parameters;

9. to permanently save the new values of the parameters, press Prg/

Mute for 5 seconds. This exits the parameter setting procedure.



Important:

• If the controller is powered down before pressing Prg/mute, all the

changes made to the parameters will be lost;

• In the two parameter setting procedures (F and C), the new values are only

saved after having pressed Prg/mute for 5 seconds. When setting the set point, the new value is saved after con rming with Set.

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

5. To return to the list of main parameters, press Prg/mute and then

access parameter toF = o time;

6. To save the settings, press Prg/mute for 5 seconds and exit the

parameter setting procedure.

Note: only one on or o event can be programmed.

Setting the default parameters

To set the parameters to the default values:

• Power down the controller;

• Press Prg/mute;

• Power up the controller holding the Prg/mute button, until the

message “Std” is shown on the display, after 5 s.

Note: this will cancel any changes made and restore the original values set by the manufacturer, i.e. the default values shown in the parameter table.

Testing the display and keypad on start-up

To access test mode:

1. Switch the controller on;

2. Press Prg when the three segments on the display are all on (stage 3

in the table below).

Stage Display Keypad

First Display com-

pletely o for 5 seconds

Press Prg for 5 seconds to set the default values

Second Display comple-

tely on for 2 s

No e ect

Third 3 segments (“--

-”) on

Pressing each button lights up a speci c segment. Note: in this stage, the icon indicates the Real Time Clock (RTC) is  tted

Fourth Normal opera-

tion

Normal operation

Tab. 3.h

The sequence of buttons to be pressed to test the display in stage 3 is described below.

ir33+

Note:

• To move from the parameters in one category to another, when

displaying the parameter code, press Prg to show the category and UP and DOWN to move from one category to another;

• if no button is pressed for 10s, the display starts  ashing, and after 1

minute automatically returns to the standard display;

• to increase the scrolling speed, press and hold the UP/DOWN button for

at least 5 seconds;

• all the changes made to the parameters, temporarily stored in the

RAM, can be cancelled, by not pressing any button for 60 seconds, thus returning to the standard display. The values of the clock parameters (rtc), however, are saved when entered.

Parameter categories

Category Text Icon Category Text Icon

Probes Pro

Fan FAn

Control CtL

Con guration CnF

Compressor CMP

HACCP HcP

Defrost dEF

Clock rtc

Alarms ALM

Tab. 3.g

The following examples apply to models  tted with RTC.

Example 1: setting the current time/date

1. Access the type C parameters as described in the corresponding

paragraph;

2. Press UP/DOWN and select the parent parameter tc, or alternatively

press the PRG button to select the “rtc” parameter category and then the parameter tc;

3. Press Set: parameter y is displayed, followed by two digits that

indicate the current year;

4. Press Set and set the value of the current year (e.g.: 12=2012), press

Set again to con rm;

5. Press UP to select the next parameter - month, and repeat steps 3

and 4 for the following parameters:

6. M=month, d=day of the month, u=day of the week h=hour,

m=minutes;

7. To return to the list of main parameters, press Prg/mute and then

access parameters ton and toF (see the following paragraph), or alternatively:

8. To save the settings, press Prg/mute for 5 seconds and exit the

parameter setting procedure.

Example 2: setting the light/auxiliary output (aux) On/O time

1. Access the type C parameters as described in the corresponding

paragraph;

2. Press UP/DOWN and select the parent parameter ton = on time;

3. Press Set: parameter d is displayed , followed by one or two digits that

represent the on day, as follows: 0 = function disabled 1 to 7 = Monday to Sunday 8 = Monday to Friday 9 = Monday to Saturday 10 = Saturday & Sunday 11 = every day;

4. Press Set to con rm and go to the on time parameters h/m=hours/

minutes;

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

Defrost

To activate a defrost, the defrost probe must measure a temperature less than the end defrost temperature (par. dP1).

ACTIVATION: press for 5 seconds:

ir33+

DEF

ir33+ wide / Easy wide

After 5 seconds, the display shows the start defrost signal (dFb) for 3 s. The controller enters defrost mode, with the corresponding icon shown on the display, together with the message “dEF” if set accordingly by parameter d6. The defrost relay is also activated.

Par. Description Def Min Max UoM

d6 Terminal display during defrost0 = Tempera-

ture alternating with dEF1 = Display disabled2 = dEF

102-

Tab. 3.i

Example: defrost activation on ir33+.

DEACTIVATION: press for 5 seconds:

ir33+

DEF

ir33+ wide / Easy wide

After 5 seconds, the display shows the end defrost signal (dFE). The controller exits defrost mode, returning to the standard display.

Example: defrost deactivation on ir33+.

On/O

To switch the controller o from the keypad:

• press On-O for 3 seconds.

The display shows the text O  ashing for 3 seconds, and then on steady. Finally, the text O alternates with the standard display. Any active output relays are deactivated.

To switch the controller on from the keypad:

• press On-O for 1 s.

The display shows the text On for 1 s and then returns to the standard display. Any output relays are activated again.

Continuous cycle

For the explanation of the continuous cycle function, see chapter 6. To activate the continuous cycle, the value of parameter cc must be >0.

ACTIVATION: press the button or combination of buttons for 5 seconds

ir33+

ir33+ wide Easy wide

The message “cc”  ashes on the display for 3 seconds, and subsequently, if the conditions are suitable, the controller shows the start continuous cycle message “ccb” and the corresponding icon on the display.

ir33+ wide, ir33+ wide small

easy wide, easy wide small

aux

prg

mute

aux

prg

mute

aux

prg

mute

aux

prg

mute

aux

prg

mute

aux

prg

mute

prg

mute

aux

prg

mute

aux

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

Example: continuous cycle activation for ir33+



DEACTIVATION: press the button or combination of buttons for 3 s:

ir33+

ir33+ wide Easy wide

The message “cc”  ashes on the display for 3 seconds, and subsequently the controller shows the end continuous cycle message, “ccE”.

ir33+



Display defrost probe

To display the value measured by the defrost probe:

• press Set and UP together for 3 s;

• the code of parameter d/1 is displayed  ashing;

• continue holding the buttons until the value measured by the defrost

probe is displayed;

• release the buttons;

• the standard display is shown again after 10 s.

ir33+



Auxiliary/light output activation

Activation from the keypad: for automatic activation from scheduler see the second example in paragraph 3.5. To activate the auxiliary (H1 = 2) and/or light output (H1 = 3) from the keypad:

• press AUX and/or if present;

• the message AUX  ashes on the display for 1 s:

• press and hold until activating the output and the corresponding icon

on the display, which then shows the standard display.

Auxiliary output active

Light output active

Press AUX to deactivate the AUX or light output.

Probe calibration

Parameters /c1 to /c4 are used are used to calibrate the  rst, second, third and fourth temperature probe respectively. Access the parameters and then set the required values. When pressing Set, after having entered the value, the display does not show the parameter, but rather immediately shows the new value of the probe reading being calibrated. This means the result of the setting can be checked immediately and any adjustments made as a consequence. Finally, press Prg for 5 seconds to save the value of the parameter.

HACCP menu

The controller must be  tted with the RTC (real time clock). To enter the HACCP menu:

• press the combination/button shown the table below for 1 s;

• press UP/DOWN to display the parameters in the HACCP category;

• press PRG for 5 seconds to return to the standard display.

ir33+

ir33+ wide Easy wide

ir33+



ir33+ wide / ir33+ small wide

Minimum and maximum temperature monitoring

The controller can record the minimum and maximum temperature measured by the control probe over a period of up to 999 hours (more than 41 days). To enable monitoring:

• enter programming mode as explained in the corresponding

paragraph;

• set r5=1;

• select rt;

press:

ir33+

DEF

ir33+ wide Easy wide

This displays how long minimum and maximum temperature monitoring has been active, (if recording has just been enabled, rt=0);;

• to restart temperature recording, press for more than 5 s:

ir33+

ir33+ wide Easy wide

The message “rES” indicates that the log has been deleted. The controller resets the total hours and restarts monitoring;

• press Set to return to the list of parameters;

• to display the maximum temperature measured by the probe, read the

value associated with parameter rH;

• to display the minimum temperature measured by the probe, read the

value associated with parameter rL.

Note: after the maximum time of 999 hours, minimum and maximum temperature monitoring continues, while the time interval remains  xed at 999.

Important: the values of parameters rt, rL and rH are saved to the controller’s memory every hour. If the controller is not connected to an uninterruptible power supply, a temporary blackout may mean the values of rt, rL and rH measured in the last hour will be lost. When power returns, the controller automatically restarts monitoring from the previously saved values.

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

4. COMMISSIONING

4.1 Con guration

The con guration parameters are set when commissioning the controller, and involve:

• date/time setting, if the clock is  tted (RTC – real time clock);

• analogue probe measurement stability;

• probe display stability;

• standard display shown on the controller, and on the remote display,

and the decimal point;

• serial address for the supervisor network connection;

• temperature unit of measure (°C / °F);

• lock keypad, disable buttons and buzzer;

• display during the defrost.

Date/time setting

See example 1 in par. 3.5.

Analogue probe measurement stability

De nes the coe cient used to stabilise the temperature measurement,  ltering the reading based on two algorithms:

• limitation of variation: the maximum variation the value is limited, so as

to reduce impulsive disturbance;

• moving average: this limits the e ect of any noise superimposed over

the temperature measurement that may negatively a ect control

performance. Low values assigned to this parameter allow a prompt response of the sensor to the temperature variations; the reading however become more sensitive to disturbance. High values slow down the response, but guarantee greater immunity to disturbance, that is, a more stable and more precise reading.

Par. Description Def Min Max UOM

/2 Probe measurement

stability

4 1 15 -

Tab. 4.a

Probe display stability

Important: this parameter only applies to the temperature shown

on the display, and not the reference control temperature.

Par. Description Def Min Max UOM

/3 Probe display stability

0 = Disabled 1 = Fast update… 15 = Slow update

0 0 15 -

Tab. 4.b

This parameter is used to set the rate at which the temperature display is updated. The temperature shown on the display tends to follow rapid deviations away from the set point very slowly, and vice-versa, moves very quickly in the event where the temperature displayed is approaching the set point. In the table the delay of display based to the setting.

/3 Display delay /3 Display delay

0 Disabled 8 50 s 1 5 s 9 60 s 2 10 s 10 75 s 3 15 s 11 90 s 4 20 s 12 105 s 5 25 s 13 120 s 6 30 s 14 150 s 7 40 s 15 180 s

Tab. 4.c

If the control temperature exceeds the high or low temperature thresholds and a high/low temperature alarm (AH/AL) is activated, or if the maximum number of  ltering steps is exceeded, the  ltering would immediately be bypassed and the temperature displayed would be the temperature e ectively measured, until all the alarms are reset. Example: in the case of bottle coolers, typically used in supermarkets where the doors are opened frequently, due to the greater thermal inertia of the liquids compared to the air (and the fact that the probe is positioned in the air and not directly on the products), the controller

measures a temperature that is higher than e ective temperature of the soft drinks, thus displaying an “unrealistic” temperature. Setting parameter /3 to a value other than 0, any abrupt variations in temperature are “ ltered” on the display, showing a temperature trend that is “closer” to the actual trend of product temperature.

Display on user terminal and remote display

The user terminal (controller display) can either display the value of the virtual control probe (see the chapter on control), the reading of probes 1-4 or the set point. Similar displays can be selected on the remote display, except for the set point.

Par. Description Def Min Max UOM

/tI Display on user terminal

1 Virtual probe 5 Probe 4 2 Probe 1 6 Reserved 3 Probe 2 7 Set point 4 Probe 3

117-

/tE Reading on remote display

0 Terminal not  tted 4 Probe 3 1 Virtual probe 5 Probe 4 2 Probe 1 6 Reserved 3 Probe 2

006-

Tab. 4.d

Serial address (parameter H0)

H0 assigns the controller an address for the serial connection to a supervisory and/or telemaintenance system.

Par. Description Def Min Max UOM

H0 Serial address

1 0 207 -

Tab. 4.e

Temperature unit of measure and decimal point display

The following settings are available:

• choose the temperature unit of measure, between degrees Celsius (°C)

and Fahrenheit (°F);

• enable/disable the decimal point on the display and the buzzer.

Par. Description Def Min Max UOM

/5 Temperature unit of measure

0 =°C, 1 =°F

001-

/6 Display decimal point

0/1 = yes/no

001-

H4 Buzzer

0/1=enabled/disabled

001-

Tab. 4.f

Lock keypad and disable buttons

Certain functions regarding the use of the keypad can be disabled, for example parameter and set point settings if the controller is accessible to the public. In addition, an individual button or group of buttons can be disabled.

Par. Description Def Min Max UOM

Disable keypad functions

106-

Terminal keypad lock con guration 0 = all buttons enabled

0 0 255 -

Tab. 4.g

Functions that can be disabled on the keypad

Important: if setting H2 ≠ 1, 3, the type F parameters cannot be set, but rather only their values can be displayed. Type C parameters, being password-protected, can always be set on the keypad following the procedure described in chap. 3. If “set point” and “F parameter” setting is disabled, the set point and the type F parameters cannot be set, but rather only their values can be displayed.

Note: Y = can be activated / enabled; N = cannot be activated /

enabled

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

ir33+, ir33+ wide, easy wide

par. H2

FUNCTION 0123456

LIGHT Y Y Y Y Y Y Y AUX YYYYYYY ON/OFF Y Y Y Y N N Y HACCP YYYYYYY PRG/MUTE (mute) Y Y Y Y Y Y Y UP+DOWN (continuous cycle) Y Y Y Y N N N SET/DEF (defrost) Y Y Y Y N N N SET (set point) setting N Y N Y Y N N “F” parameter setting N Y N Y N N N

Tab. 4.h

Disable buttons

Using the individual bits, the functions relating to the buttons on the keypad can be enabled or disabled, according to the relationships shown in the table below: to calculate the value to be assigned to parameter H6, simply sum the values assigned to the functions that should be disabled.

Note: the functions disabled using parameter H6 are added to

those disabled using parameter H2.

Disable buttons

Bit Value

par. H6

ir33+ button

ir33+ function ir33+wide

button

easy wide button

Description

Display defrost temp. procedure; access HACCP; defrost

Display defrost temp. procedure

Activate AUX output 1, continuous cycle

Defrost

Up, On-O Continuous

cycle

Mute alarms Mute alarms

416 - -

Access HACCP

532 - -

Activate/ deactivate aux output 1

664 - -

On/O

7 128 - -

Activate/ deactivate aux output 2, light

Tab. 4.i

4.2 Loading the sets of parameters

Up to 6 sets of custom parameters can be selected on the controller, after having been loaded using the VPM programming tool (Visual Parameter Manager, see appendix 1) and the programming key.

Procedure:

• power down the controller;

• power up while holding Prg/mute;

• the display will show the  rst set: bn0;

• press UP/DOWN to select set bn1 to bn6. For example, select bn2;

• press Set to con rm the selected set: the controller will load the set

of parameters called bn2 and then will return to the standard display.

Par. Description Def Min Max UOM

Hdn Number of default parameter sets available 0 0 6 -

Tab. 4.j

Note: bn0 is the default set of parameters on the controller, i.e. the default con guration. When one of sets bn1 to bn6 is loaded, bn0 is overwritten with the new set and is consequently erased.

4.3 Preparing for operation

Once having completed the installation, con guration and programming procedures, before starting the controller, check that:

• the wiring has been completed correctly;

• the programming logic is suitable for controlling the unit and the

system being managed;

• if the controller is  tted with RTC (clock), set the current time and date,

and the on and o times for the light/auxiliary output;

• set the standard display;

• set the “probe type” parameter based on the probe available and the

type of control (NTC, NTC-HT, PTC); note that the controllers that use PTC probes may have di erent part numbers from those that only use NTC probes;

• set the type of defrost: heater or hot gas;

• set the temperature unit of measure (°C or °F);

• the protection functions (delay at start-up, rotation, minimum on and

o times for the outputs) are active.

Note: all the alarms with manual reset can be reset by pressing the Prg and UP buttons together for more than 5 seconds. See the chapter on “Alarms”.

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

5. FUNCTIONS

5.1 Probes (analogue inputs)

The ir33+ platform controllers feature a maximum of 4 analogue inputs, which are used for NTC, high temperature NTC (NTC Enhanced Range) or PTC temperature sensors (see the note below). Probes S3 and S4 can also be con gured as digital inputs. Probe S1 is the control probe and its function cannot be changed; the functions of probes S2, S3, S4 can be selected using parameters /A2, /A3, /A4. The probes can be calibrated to adjust their readings. In particular, parameters /c1 to /c4 are used to increase or decrease the values read by the probes connected to inputs S1, S2, S3 and S4 across the entire the range of measurement. For the calibration procedure, see paragraph 3.5.

Par. Description Def Min Max UOM

/P Type of probe

0 = NTC Standard Range -50T90°C 1 = NTC Enhanced Range -40T150°C 2 = PTC Standard Range -50T150°C

002-

/c1 Probe 1 calibration 0 -20 20 /c2 Probe 2 calibration 0 -20 20 /c3 Probe 3 calibration 0 -20 20 /c4 Probe 4 calibration 0 -20 20 -

Tab. 5.a

min max

Fig. 5.a

Key

T1 Temperature read by the probe T2 Value calibrated by T1 A Calibration value min, max Range of measurement

Note: the controllers that use PTC probes may have di erent part numbers from those that only use NTC probes. Example:

Model P/N Probes available

ir33+ IREV*7******* NTC/PTC ir33+ wide PBEV*6******* PTC easy wide

Tab. 5.b

Assigning the functions of probes S2, S3, S4

The controller, inside the refrigerated cabinet or cold room, can use the following probes:

• defrost, located on the evaporator, preferably where ice remains the

longest;

• condenser, used to protect the compressor against high pressure

when the condenser is o or the condenser fan is malfunctioning;

• frost protection, to activate the corresponding alarm.

Note:

• to con gure probes 3 and 4 as digital input 1 and 2 respectively, set

parameters /A3 e /A4 =0;

• if multiple probes have been con gured with the same operating

mode, the controller will use the  rst probe in increasing order with that con guration.

Par. Description Def Min Max UOM

/A2 Probe 2 con guration (S2) (M models) 0 0 4 /A2 Probe 2 con guration (S2)

0 Absent 1 Product (display only) 2 Defrost 3 Condenser 4 Frost

204-

/A3 Probe 3 con guration (S3)

0 Digital input 1 (DI1) 1 Product (display only) 2 Defrost 3 Condenser 4 Frost

003-

/A4 Probe 4 con guration (S4/ DI2)

0 Digital input 2 (DI2) 1 Product (display only) 2 Defrost 3 Condenser 4 Frost

004-

Tab. 5.c

5.2 Digital inputs

Digital inputs DI1 and DI2 respectively can be enabled in the place of probes S3 and S4. Digital inputs 1, 2 must  rst be enabled (par. /A3 and / A4 = 0) and then assigned to a speci c function (par. A4 and A5). Finally, an external contact can be connected to the multifunction input to activate various types of functions, such as alarms, curtain/door switches, start defrost, etc. See the table below.

Important: to ensure unit safety in the event of serious alarms, the unit must be  tted with all the electromechanical safety devices needed to guarantee correct operation..

Note: (applies to all settings of par. A4 and A5): if 2 digital inputs are con gured in the same way, for example to enable defrost, the disable event is generated when at least one of the inputs is open, while the enable event is generated when at both inputs are closed.

Digital input functions

PARAMETERS A4, A5

Setting Contact

OPEN CLOSED

0 = not active - 1 = immediate external alarm active not active 2 = delayed external alarm active not active 3 = select probe (ir33M) see /tI  rst probe

enabled (/A2,

/A3, /A4, /A5) 3 = enable defrost (all other models) not enabled enabled 4 = start defrost not active active 5 = door switch with compressor and evapo-

rator fans o

door open door closed

6 = remote ON/OFF OFF ON 7 = curtain switch curtain open curtain closed 8 = low pressure switch low pressure

status

normal status

9 = door switch with fans o door open door closed 10 = direct/reverse operation direct mode reverse mode 11 = light sensor light o light on 12 = activate aux output deactivated activated 13 = door switch with compressor and fans

o and light not managed

door open door closed

14 = door switch with fans o and light not managed

door open door closed

Tab. 5.d

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

The following parameters are involved in the explanation of the settings for A4 and A5.

Par. Description Def Min Max UOM

A4 Multifunction digital input 1 con guration

(DI1) See the previous table

0/3 (IR33M)

014-

A5 Multifunction digital input 2 con guration

(DI2) See the previous table

0 0 14 -

A6 Stop compressor on external alarm

0 = compressor always o ; 100 = compressor always on

0 0 100 min

A7 Digital alarm input delay0 = control

outputs unchanged

0 0 250 min

Ado Light management with door switch 0 0 1 c7 Maximum pump down time (PD)

0 = Pump down disabled

0 0 900 s

d5 Defrost delay at start-up (if d4=1) or from DI0 0 250 min

d8 High temperature alarm bypass time after

defrost (and door open)

1 0 250 hr/

min d8d Alarm bypass time after door open 0 0 250 min dI Maximum time between consecutive

defrosts - 0 = defrost not performed

8 0 250 hr/

min

Tab. 5.e

1 = Immediate external alarm

Application: external alarm that requires immediate action (for example high pressure alarm or compressor thermal overload). When the alarm is activated:

1. the following actions occur:

• a signal is shown on the display (‘IA’);

• the icon  ashes;

• the buzzer is activated, if enabled;

• the alarm relay is activated, if selected;

2. and the actuators behave as follows:

• compressor: operates depending on the values assigned to

parameter ‘A6’ (stop compressor on external alarm).

• fans: continue operating according to the fan parameters (“F”).

Note when the compressor stops, the minimum compressor on

time (“c3”) is ignored.

2 = Delayed external alarm

The delayed external alarm is equivalent to the immediate external alarm, however with the addition of a delay A7 before the signal (“dA”).

Application: this con guration is especially useful for managing the low pressure alarm. In fact, when starting for the  rst time, the unit often detects a low pressure alarm due to the environmental conditions rather than a unit malfunction. Setting a delay for the alarm (par. A7) will avoid false signals. In fact, by suitably calculating the delay, if the low pressure is due to environmental conditions (low temperature), the alarm will be automatically reset before the delay has elapsed.

Note if “A7”=0 activation of the alarm does not cause the compressor to operate according to the values assigned to parameter ‘A6’ (stop compressor on external alarm); on the other hand, the “dA” signal is

displayed, the icon

 ashes, the buzzer and the alarm relay (if selected)

are activated; the delayed external alarm is thus signal-only.

3 = Probe shown on the display (IR33M models)

On thermometer-only models, this setting selection is used to exploit the digital input in order to show, on the display, the probe selected by parameter “/tI” or the  rst enabled probe (see parameters “/A2”,”/A3”,”/A4”). In practice, if the contact is open, the probe selected by parameter “/tI” is shown, whereas, if the contact is closed, the  rst enabled probe is shown.

Note: if more than one digital input is con gured as the probe selection, the probe selected by parameter /tI is displayed when at least one of the inputs is open.

3 = Enable defrost (all other models)

Application: any defrosts called when the contact is open remain pending until the contact closes. The various possibilities are shown below.

A4 = 3 Contact Defrost

Open Not enabled Closed Enabled Closed without request from the controller

Not performed

Closed with in progress

When the digital input opens, the defrost is immediately stopped and the unit restarts normal operation (without performing the dripping or post-dripping stages). The

LED starts  ashing to indicate that the defrost call is pending, awaiting the next enabling signal (closing of the contact), when the defrost will be performed completely.

Tab. 5.f

Note this function is useful to prevent defrosts on units accessible to

the public during opening times.

4 = Start defrost from external contact

Application: this function is useful for performing defrosts in real time. To perform the defrosts, connect a cyclical, mechanical or electronic timer to the selected digital input: a series of units can be connected to the same timer, setting di erent values for parameter d5 (defrost delay from multifunction input) to avoid simultaneous defrosts.

Important: for 12 Vac and 12/24 Vac versions. When connecting a series of units to the same timer, the best solution is to insulate all the contacts galvanically, inserting an intermediate relay for each contact.

OFF

TIMER

OFF

dP(2)dP(1)

d5(2)

DEFROST

UNIT 1

UNIT 2

UNIT 3

DEFROST

OFF

DEFROST

dP(3)

d5(1)=0

d5(3)

Fig. 5.b

Key

dP Maximum defrost duration d5 Defrost delay from

digital input

UNIT 1…3 Unit 1-3 t Time

5 = Door switch with compressor and evaporator fan o

Parameter d8 de nes the high temperature alarm bypass time after the defrost ends (or the door is opened).

Parameter d8d is the alarm bypass time after the door is opened. If d8d=0, the alarm delay after door open coincides with the value of parameter d8. Setting “A4”=5 manages the cold room door switch. The behaviour of the door switch depends on the status of the light when the door is opened:

1. light o ;

2. light on.

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

Case 1: light o when opening the door

If the door is opened with the light OFF:

• the compressor and the evaporator fans are switched o ;

• the light is switched on (only on models  tted with at least 1 auxiliary

relay programmed as a light output);

• the reading displayed and the icon  ash;

• the temperature alarms are disabled.

If the door remains open for a time longer than “d8” (d8d), the controller resumes normal operation:

• the compressor and the evaporator fan are switched on, if needed;

• the light is switched o ;

• the reading on the display  ashes;

• the buzzer and the alarm relay are activated;

• the temperature alarms are enabled with the delay “Ad”.

To stop the reading from  ashing, close the door. When the door closes, the controller resumes normal operation, switching o the light and enabling the temperature alarm after the delay time “d8”. The compressor is re-started, after any set protection times (see the “C” parameters).

Case 2: light on when opening the door

The

icon is on. If the door is open with the light on, it is assumed the user enters the cold room, turning on the light before entering, closing the door behind him, and then exits the room, closing the door a second time.

When the door is opened the  rst time:

• the compressor and the evaporator fans are switched o ;

• the light stays on (only on models  tted with at least 1 auxiliary relay

programmed as a light output);

• the reading is displayed and the icon  ashes;

• the temperature alarms are disabled.

When the door is closed the  rst time, the controller maintains the previous situation:

• the compressor and the evaporator fans stay o ;

• the light stays on;

• the reading is displayed and the icon  ashes;

• the temperature alarms are disabled.

Door opened the second time: no change.

When the door is closed the second time, the controller resumes normal operation, switching o the light and enabling the temperature alarm after the delay time “d8”. When the compressor re-starts, any set protection times must elapse  rst (see the “C” parameters).

If, after opening, the door remains open for a time longer than “d8” or “d8d”, the controller resumes normal operation:

• compressor and evaporator fan switched on if needed;

• light o ;

• the reading on the display  ashes;

• the buzzer and the alarm relay are activated;

• the temperature alarms are enabled with the delay “Ad”;

• when the door closes, the high temperature alarm bypass time after

door open d8 is not set.

To stop the reading from  ashing, close the door.

If, after being closed for the  rst time, the door remains closed for longer than time “d8” or “d8d”, the controller resumes normal operation:

• compressor and evaporator fan switched on if needed;

• light o ;

• the temperature alarms are enabled with the delay “d8”;

• the high temperature alarm bypass time after door open d8 is set.

If, after the door is closed for the  rst time, the light is switched o manually, the controller resumes normal operation:

• compressor and evaporator fan switched on if needed;

• light o ;

• the temperature alarms are enabled with the delay “d8”;

• the high temperature alarm bypass time after door open d8 is set.

Note:

• if the light was previously switched on manually, when the door is

closed for the second time, it is automatically switched o ;

• even if the evaporator fan is managed by the “fan controller” (see the F

parameters), the fans are forced to stop when the door is open.

This algorithm resolves any problems relating to faults or malfunctions of the door switch.

Door-switch

Fig. 5.c

Note: if more than one digital input is con gured as a door switch,

the door is considered open when at least one of the inputs is open.

6 = Remote On/O

The digital input may be programmed also as remote ON/OFF. When the control is in OFF:

• the temperature is displayed alternating with the message “OFF”;

• the internal timer for parameter “dI” is updated. If “dI” expires when the

unit is OFF, a defrost is performed when the unit is switched on again;

• the auxiliary relay set as auxiliary and light output is active, the other

auxiliary outputs are o ;

• the buzzer and the alarm relay are deactivated;

• the controller does not perform the control functions, defrosts,

continuous cycle, signal temperature alarms and all other functions;

• the compressor protection times are observed;

When the controller is switched back on, all the functions are re-activated, with the exception of:

• defrost on start-up;

• compressor and fan delay at power on.

Note: the ON/OFF from external digital input has priority over the

keypad and the supervisor;

7 = Curtain switch

If the input is selected as a curtain switch, the controller modi es the set point when the contact closes, adding the value of parameter “r4”; the new value is then used for all the functions relating to the set point (e.g. relative high and low temperature alarms, control with dead band, control with two compressor steps etc.). For example when “r4”=3.0 (default value), the set point is increased by 3 degrees from the value used when the curtain is open.

Par. Description Def Min Max UOM

r4 Automatic night-time set point variation 3 -20 20 °C/°F

Tab. 5.g

OFF

DI OPEN

CMP/FAN

OFF

DI CLOSED

CMP/FAN

Fig. 5.d

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

Key

St Set point rd Di erential CMP Compressor FAN Fan Sv Virtual probe r4 Automatic night-time set point variation

Note: if one of the auxiliary outputs is used to manage the light, lowering the curtain automatically switches the light o , while raising it switches the light on.

8 = Low pressure switch input for pump down

See par. 6.4. Setting “A4”=8 manages the low pressure switch. The low pressure alarm “LP” is signalled when the low pressure switch is activated:

• during normal control (c7=0) with the compressor on, or alternatively

• with pump-down function con gured (c7 >0), if the pump down valve

is open and the compressor is on.

The low pressure alarm signal is delayed by the time set for parameter “A7”. The low pressure alarm “LP” stops the compressor.

ir33+





OFF

CMP

LOW

Pressure switch

Pump down valve

HIGH

OFF

ON LP Alarm

Fig. 5.e

Key

CMP Compressor Pump down valve Pump down valve Pressure Switch Pressure

switch

LP alarm Low pressure alarm

t Time A7 Alarm signal delay

Note: this parameter, together with c7, c8, c9 and H1, H5, allows

management of the “pump-down” algorithm (see par 6.3).

9 = Door switch with fan o only

Same as for option “A4”=5, with the di erence being that when opening the door only the evaporator fan is switched o .

10 = Direct/reverse operation

Important: when A4 = 10, the status of digital input has priority

over the setting of parameter r3 (direct/reverse operating mode).

When the contact is open, the controller operates in “direct” mode (cooling), when the contact is closed, in “reverse” mode (heating). A switch can therefore be connected to select heating or cooling operation.

OFF

DI OPEN

CMP/FAN

r3 = 0, 1, 2

DIRECT

OFF

DI CLOSED

CMP/FAN

r3 = 0, 1, 2

REVERSE

Fig. 5.f

Key

St Set point Sv Virtual probe rd Di erential CMP Compressor FAN F an

11 = Light sensor

The digital input is used to read a light sensor (P/N PSOPZLHT00, actually an analogue input, from which a digital signal is taken using the parameter or threshold of the light sensor).

The light sensor can be located:

• in the door jamb (ref. A);

• inside the cold room or cabinet (ref. B).

Par. Description Def Min Max UOM AF Light sensor OFF time

0 Sensor in the door jamb > 0 Sensor inside the cold room or cabinet

0 0 250 s

Tab. 5.h

Fig. 5.g

A (AF=0) B (AF = 1)

Light sensor signal

The sensor signals the opening and closing of the door

The sensor signals the opening of the door and detects light inside the cabinet/cold room. The sensor also signals

closing of the door Inside light: on With the door open If the sensor detects light Inside light: o With the door

closed, minimum o time of 5 s, to avoid rapid, successive impulses of the light relay

Closing of the door is measured by

time, as the inside light will illuminate

the sensor. After the time AF (>0) the

inside light is switched o for 5 secon-

ds. If the light sensor signals darkness,

the door must be closed and the light

will therefore remain o ;

if it signals light: the door is open and

the light will be switched on again.

Tab. 5.i

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

12 = Auxiliary output

Set H1 and/or H5 = 2 to activate the auxiliary output.

See the table at the start of this paragraph for details on the activation/ deactivation logic.

13 = Door switch with compressor and fan o , light not managed

Operation is similar to A4=5, with the di erence that the light output is not modi ed.

Note: the light management algorithm depends on parameter Ado – “Light management with door switch” (masked parameter accessible from VPM).

Ado Light when ope-

ning the door

Algorithm Description

0o normal open-close

on extended open-close-open-close

1o extended open-close-open-close

on normal open-close

Tab. 5.j

If the digital input is selected to not manage the light (A4, A5, A9 =13 or

14), the algorithm is modi ed as follows:

Ado Light when ope-

ning the door

Algorithm Description

0o normal open-close

on extended open-close-open-close

1o normal open-close

on normal open-close

Tab. 5.k

See the table at the start of this paragraph for details on the activation/ deactivation logic.

14 = Door switch with fan o only, light not managed

Operation is similar to A4=9, with the di erence that the light output is not modi ed.

Note: the light management algorithm depends on parameter Ado, as shown in the previous table.

See the table at the start of this paragraph for details on the activation/ deactivation logic.

5.3 Digital outputs

The parameters in question concern the minimum on or o times of the same output or di erent outputs, so as to protect the loads and avoid swings in control.

Important: for the times set to become immediately operational, the controller needs to be switched o and on again. Otherwise, the timers will become operational when the controller is next used, when the internal timer is set.

Relay output protectors (parameters c7,c8,c9)

Par. Description Def Min Max UOM

c0 Compressor, fan and AUX start delay at power on0 0 15 min

c1 Minimum time between successive compres-

sor starts

0 0 15 min

c2 Minimum compressor o time 0 0 15 min c3 Minimum compressor on time 0 0 15 min

Tab. 5.l

• c0: when the controller is powered on, the compressor, evaporator

fans and auxiliary relay in neutral zone control (‘H1’=11 or ‘H5’=11) are started after a delay (in minutes) equal to the value assigned to this parameter. The delay is used to protect the compressor against repeated starts in the event of frequent power failures;

• c1 de nes the minimum time between two consecutive starts of the

compressor;

• c2 de nes the minimum compressor o time;

• c3 de nes the minimum compressor on time;

Other relay output protectors (parameter c11)

Par. Description Def Min Max UOM

c11 Second compressor start delay 4 0 250 s

Tab. 5.m

• c11 de nes the activation delay between the  rst and second

compressor (or between the  rst and the second compressor step).

OFF

STEP1

STEP2

c3 c2

c11

POWER_ON

Fig. 5.h

Key

Step1 Compressor step 1 Step2 Compressor step 2 t time

Functions assigned to AUX1/AUX2

Outputs AUX1 and AUX2 can be assigned di erent functions, such as alarm signal, auxiliary output, light output, pump down valve, condenser fan, reverse output with neutral zone, second compressor, second compressor with rotation. For details, see the chapter on control.

Par. Description Def Min Max UOM

H1 AUX1 output con guration 1 0 13 -

0 = normally energised alarm 1 = normally de-energised alarm 2 = auxiliary 3 = light 4 = auxiliary evaporator defrost 5 = pump down valve 6 = condenser fan 7 = delayed compressor 8 = auxiliary with deactivation when OFF 9 = light with deactivation when OFF 10 = no function 11 = reverse with neutral zone 12 = second compressor step 13 = second compressor step with rotation

H5 AUX2 output con guration

See H1

3 0 13 -

Tab. 5.n

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

6. CONTROL

6.1 Switching the controller On/O

The controller can be switched ON/OFF from a number of sources; keypad, supervisor and digital input. In this operating mode, the display will be show the temperature selected for parameter /tI, alternating with “OFF”. The digital input can be used to switch the controller on/o , setting parameter A4/A5 to “6”. Switching on/o from digital input has priority over the same function from the supervisor and the keypad.

Source Priority Note

Digital input 1 Disable On/O from keypad and supervisor Keypad 2 Supervisor 3

Tab. 6.a

6.2 Virtual probe

The control output is the compressor output, which in most cases is also associated with the evaporator fan output. The control probe is probe S1, while probes S2, S3, S4 can be assigned functions such as product probe (display only), defrost probe, condenser probe or frost protection probe. For vertical display cases, the virtual probe (Sv) should be de ned as the control probe; this represents the half-way point between the display case outlet and intake probes, and the reading is thus a ected by the environmental conditions. During the day, the display case light is on and the curtain is open to allow customers to take out the products store, at night the curtain is closed and the light is o . Due to the lower heat load at night, the night-time set point is increased by the value of parameter r4.

Par. Description Def Min Max UOM

St Set point 0 r1 r2 °C/°F r4 Automatic night-time set point variation 3.0 -20 20 °C/°F /4 Virtual probe composition

0 = control probe S1 100 = probe S2

0 0 100 -

Tab. 6.b

Parameter /4 is used to determine the virtual probe (Sv) as the weighted average of control probe S1 and probe S2, according to the following formula:

Sv =

[ S1*(100 - /4) + S2*/4

100

DAY: set point = -13°C

NIGHT: set point = -10°C

Sv=(S1+S2)/

/4=50

Fig. 6.a

Key

S1 Outlet probe Sv Virtual probe S2 Intake probe

6.3 Set point

The reference output is the compressor output (CMP). The controller can operate in 3 di erent modes, as selected by parameter r3:

• direct with defrost control;

• direct;

• reverse.

Par. Description Def Min Max UOM

St Set point 0 r1 r2 °C/°F rd Di erential 2.0 0.1 20 °C/°F

rn Neutral zone 4.0 0.0 60 °C/°F rr Reverse di erential 2.0 0.1 20 °C/°F r1 Minimum set point -50 -50 r2 °C/°F r2 Maximum set point 60 r1 200 °C/°F r3 Operating mode

0 = Direct with defrost control (cooling) 1 = Direct (cooling) 2 = Reverse (heating)

002-

Tab. 6.c

OFF

CMP

REVERSE

OFF

CMP

DIRECT

Fig. 6.b

Key

St Set point rd Di erential Sv Virtual probe CMP Compressor

If the second compressor output is activated (H1, H5 = 12) on the AUX output, the compressor output is activated at St±rd/2 and the AUX output at St±rd, as illustrated in the following  gure.

OFF

CMP

OFF

rd/2

AUX

rd/2

REVERSE

OFF

rd/2

CMP

OFF

rd/2

AUX

DIRECT

Fig. 6.c

Key

St Set point rd Di erential Sv Virtual probe AUX Auxiliary output

CMP Compressor

The neutral zone is activated on the controller only if the reverse output is activated with neutral zone control, H1 = 11. The  gure below shows direct operation (r3 =0, 1), with 1 compressor output (CMP) and 2 compressor outputs (CMP and AUX2).

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

r3=0,1

OFF

CMP

rr rn/2 rn/2

AUX

Fig. 6.d

r3=0,1

OFF

CMP

rr rn/2

AUX

rd/2 rd/2

AUX2

Fig. 6.e

Reverse operation (r3 =2), with 1 compressor output (CMP) and 2 compressor outputs (CMP and AUX2).

r3=2

OFF

CMP

rn/2

AUX

rn/2rr

Fig. 6.f

r3=2

OFF

CMP

rn/2

rd/2

AUX

rn/2

AUX2

rd/2

Fig. 6.g

Key

St Set point rd Di erential rn Neutral zone rr Reverse di erential

6.4 Pump down

The pump down function has the purpose completely emptying the evaporator of refrigerant on reaching the set point. The controller  rst deactivates the pump down valve and then, after a certain time, the compressor. The application diagram shows the pump down valve and the low pressure switch. When the controller restarts the compressor, if protection times c1 and c2 have elapsed, the pump down valve is opened, and after the time c8 the compressor is activated. The parameters involved are listed below.

Par. Description Def Min Max

UOM

c7 Maximum pump down time (PD)

0 = pump down disabled

0 0 900 s

c8 Compress. start delay after opening PD valve 5 0 60 s c9 Autostart in pump down 001-

0 = Disabled 1 = Pump down whenever closing pump down

valve & following low pressure switch activation with no cooling demand

c10 Pump down by time or pressure

0/1 = pressure/time

001-

Tab. 6.d

Note: c8 is a masked parameter, and can be made visible using the

VPM tool.

PDV

CMP

ir33+

Fig. 6.h

Key

CMP Compressor P Low pressure switch C Condenser F Filter-drier L Liquid receiver E Evaporator V2 Thermostatic expansion valve S Liquid gauge PDV Pump down valve

Pump down can be selected:

• by pressure (pressure switch required): when the pump down valve

closes, the compressor continues operating until the pressure switch measures the de ned low pressure value. The compressor is then stopped. If the pressure switch does not measure the de ned value before c7 elapses, the “Pd” alarm - pump down ended by timeout - is activated;

• by time (pressure switch optional): when the valve closes, the

compressor continues operating for the time c7 or until reaching the low pressure value. The “Pd” alarm - pump down ended by timeout - is not activated.

c10 = 0: Pump down by pressure

Pressure switch activated before c7 Pressure switch activated after c7

OFF

CMP, FAN

VPD

PRESSURE SWITCH

OFF

ALARM Pd

OFF

Fig. 6.i

Key

CMP, FAN Compressor, fan c7 Maximum pump down time VPD Pump down valve Pd Pump down alarm Pressure switch Pressure switch t Time Sv Virtual probe

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

6.5 Autostart in pump down

As seen in the previous paragraph, on reaching the set point, the controller closes the pump down valve and then the pressure switch signals low pressure. If, due to valve tightness problems, the pressure switch is activated again, the compressor can be restarted by the Autostart function.

Par. Description Def Min Max UOM

c9 Autostart in pump down

0 = Disabled 1 = Pump down whenever closing pump down valve & following low pressure switch activation with no cooling demand

001-

Tab. 6.e

OFF

CMP, FAN

VPD

PRESSURE SWITCH

OFF

AtS

OFF

Fig. 6.j

Key

CMP, FAN Compressor, fan St Set point VPD Pump down valve c7 Maximum pump down time Pressure switch Pressure switch t Time Sv Control probe AtS Autostart in pump down

Note:

• in the compressor autostart function, the protection times c1 and c2

are applied, but not c3;

• The message “AtS” is reset automatically when the next pump down

cycle terminates correctly.

Important: in the event of “Pd” alarms, the autostart function is

deactivated.

6.6 Continuous cycle

For information on activating the continuous cycle from the keypad, see chapter 3. The value of parameter cc must be >0. During operation in continuous cycle, the compressor continues to operate, independently of the controller, for the time cc, so as to lower the temperature even below the set point. The continuous cycle is stopped after the time “cc” or when reaching the minimum speci ed temperature, corresponding to the minimum temperature alarm threshold (“AL”). If, after the end of the continuous cycle, the temperature falls by inertia below the minimum temperature threshold, the low temperature alarm signal can be ignored by suitably setting parameter c6: alarm bypass after continuous cycle.

Par. Description Def Min Max UOM

cc Continuous cycle duration 0 0 15 hour c6 Low temperature alarm bypass time after

continuous cycle

2 0 250 hr/

min

Tab. 6.f

6.7 Anti-sweat heater

When the unit is powered on, the compressor is activated in cooling mode and the AUX and light outputs are disabled until the control probe measures a value less than St + Hdh. The aim is to prevent the light or the heater connected to the AUX output from adding heat and contrasting the work done by the compressor. When the function is active, the display shows the corresponding icon,  ashing.

Par. Description Def Min Max UOM

Hdh Anti-sweat heater o set

0 = anti-sweat heater function disabled (°C) 32 = anti-sweat heater function disabled (°F)

0 -50 200 °C/°F

Tab. 6.g

The following example refers to the con guration where Hdh = 2 and St = 0, with activation of the auxiliary output (H1 = 2)

CMP, FA N

St+ Hdh

AUX,

LIGHT

OFF

Fig. 6.k

Key

CMP, FAN Compressor, fan LIGHT Light AUX Auxiliary output Sv Virtual probe St Set point Hdh O set t Time

ir33+



Note:

• when alarms “HI”, “IA”, “dA”, “CHt”, “EE”, “EF” ,”rE” are active of the controller

is OFF, the anti-sweat heater function is still enabled;

• at the end of the anti-sweat heater function, the outputs con gured

as light or auxiliary can be controlled by the user from the keypad, supervisor or digital inputs.

• if AUX1 or AUX2 is con gured as a light or auxiliary output at power on,

the output retains the same status as when previously powered down. If the anti-sweat heater function is activated, this is no longer true: the output at power on remains OFF while the function is active. When the control temperature (virtual probe) reaches the value of “St+Hdh”, the function ends, activating the light output and auxiliary output irrespective of their status when previously powered down.

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

6.8 Light and Aux outputs

If AUX1 or AUX2 is con gured as a light or auxiliary output at power on, the output retains the same status as when previously powered down.

The light or AUX output can be activated by the scheduler: this is set using parameter H8. For the on/o day and time settings, see chapter 3.

Par. Description Def Min Max UOM

H8 Output switched with scheduler

0 = Light; 1= AUX

001-

H9 Set point variation with scheduler

0/1 = no/yes

001-

St Set point 0.0 r1 r2 °C/°F r4 Automatic night-time set point variation 3.0 -20 20 °C/°F ton Light/aux on time - - - toF Light/aux o time - - - -

Tab. 6.h

SET

CMP, FA N

OFF

ton toF

St+rd

St + r4

H9=1

Fig. 6.l

Key

CMP, FAN

Compressor, fan r4 Automatic night-time set point

variation St Set point Sv Virtual probe ton Light/aux on time toF Light/aux o time t Time

6.9 Defrost

Introduction

Parameters td1 to td8 can be used to set up to 8 defrost events, managed by the controller’s clock (RTC).

Press Set to set the sub-parameters, as shown in the table:

Par. Description Def Min Max UOM

td1…8 Defrost 1 to 8 (press Set) - - - d__ Defrost 1 to 8 – day 0 0 11 day h__ Defrost 1 to 8 – hour 0 0 23 hour n__ Defrost 1 to 8 – minute 0 0 59 minute

Tab. 6.i

Remember that sub-parameter “d_” of td1(td2) de nes the defrost day as follows:

d_ = Defrost– day 0 = event disabled 9 = Monday to Saturday 1…7 = Monday to Sunday 10 = Saturday & Sunday 8 = Monday to Friday 11 = every day

ir33+ can manage the following types of defrost, based on the setting of parameter d0:

0. heater (located near the evaporator) by temperature;

1. hot gas by temperature;

2. heater by time;

3. hot gas by time;

4. heater by time with temperature control. The defrost can end by temperature, in which case the defrost probe Sd must be installed, or by time. In the  rst case, the defrost ends when

the defrost probe Sd exceeds the end defrost value dt1 or the time dP1 has elapsed, in the second case when the defrost procedure exceeds the maximum time dP1. At the end of the defrost, the dripping stage may begin (if dd>0), during which the compressor and the fans are o , followed by the post-dripping stage (if Fd>0), during which control resumes with the fans o . The type of display on user terminal and the remote display during the defrost can be selected by setting parameter d6.

Par. Description Def Min Max UOM

d0 Type of defrost 0 0 4 -

0 = Heater by temperature 1 = Hot gas by temperature 2 = Heater by time (Ed1, Ed2 not shown) 3 = Hot gas by time (Ed1, Ed2 not shown) 4 = Heater by time with temperature control

(Ed1, Ed2 not shown) dt1 End defrost temperature probe 2 4 -5 200 °C/°F dt2 End defrost temperature probe 3 (aux eva-

porator)

4 -5 200 °C/°F

dt3 End defrost temperature probe 4 4 -5 200 °C/°F dP1 Maximum defrost duration 30 1 250 min/s dP2 Maximum aux evaporator defrost duration 30 1 250 min/s d6 Terminal display during defrost

0 = Temperature alternating with dEF

1 = Display disabled

2 = dEF

102-

Tab. 6.j

Note: dt3 is as masked parameter, and can be made visible using

the VPM tool.

OFF

DEF

dt1

dP1

d0 = 0, 1

d0 = 2, 3

d0 = 4

OFF

DEF

OFF

DEF

Fig. 6.m

Key

t Time Sd Defrost probe dt1 End defrost temperature

probe 2

d0 Type of defrost

dP1 Maximum defrost duration DEF Defrost

Heater defrost by time with temperature control (d0=4) is used to activate the defrost output only if the evaporator temperature (Sd) is less than value of the parameter dt1, and ends after the time de ned by dP1. This function is useful for energy saving.

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

1. Heater defrost (d0 = 0, 2, 4): duty cycle

The duty cycle refers to the default values of parameters F2 and F3.

CMP

V_Pd

ir33+

Fig. 6.n

OFF

CMP

V_Pd

OFF

FAN

OFF

RES

REFRIG PUMP

DOWN

DEF DRIP

(dd)

POST DRIP (Fd)

REFRIG

Fig. 6.o

Key

CMP Compressor Refrig Cooling V_Pd Pump down valve Pump down Pump down stage FAN Evaporator fan Def Defrost RES Heater Drip Dripping E Evaporator Post drip Post-dripping C Condenser S2 Defrost probe V2 Thermostatic expansion valve L Liquid receiver F Filter-drier S Liquid gauge t Time

Note:

• in pump down mode, the behaviour of the fan is determined by F2;

• in defrost, the behaviour of the fan is determined by F3.

2. Hot gas defrost (d0 = 1, 3): duty cycle

The duty cycle refers to the default values of parameters F2 and F3.

CMP

V_Pd

V_def

ir33+

Fig. 6.p

Note: the defrost output (DEF) is used to control the hot gas valve

V_def.

OFF

CMP

V_Pd

OFF

FAN

OFF

V_def

(HOT GAS)

REFRIG PUMP

DOWN

DEF DRIP POST

DRIP

REFRIG

Fig. 6.q

Key

CMP Compressor Refrig Cooling V_Pd Pump down valve Pump down Pump down stage FAN Evaporator fan Def Defrost V_def Hot gas valve Drip Dripping E Evaporator Post drip Post-dripping C Condenser S2 Defrost probe V2 Thermostatic expansion valve L Liquid receiver F Filter-drier S Liquid gauge t Time

The defrost starts:

• by setting the event and the start mode, with a maximum of 8 defrosts

each day (parameters td1 to td8). The real time clock (RTC) must be available;

• from the supervisor, which sends the defrost call to each controller via

the serial line;

• from the keypad.

The defrost ends:

• when the defrost probe measures a temperature greater than the end

defrost temperature dt1;

• when no defrost probe is used, the defrost ends after a maximum time,

set by parameter dP1.

Maximum time between consecutive defrosts

Par. Description Def Min Max UOM dI Maximum time between consecutive defrosts

0 = defrost not performed

8 0 250 hr/

min

Tab. 6.k

Parameter dI is a safety parameter used to perform cyclical defrosts every “dI” hours, even without the Real Time Clock (RTC). It is also useful if the RS485 serial network is disconnected. At the start of each defrost, irrespective of the duration, an interval starts being counted. If this interval exceeds dI without a defrost being performed, one is started automatically. The count is always active even if the controller is OFF.

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

Example: if there is an RTC fault, the defrost programmed by td3 is not performed, and after the safety time dI a new defrost starts.

OFF

DEF

td1

td2

td3

Fig. 6.r

Key

dI Maximum time between consecutive defrosts DEF Defrost td1…td3 Programmed defrosts t Time

Note:

• if dI expires when the controller is OFF, a defrost will be performed

when next switched on;

• to ensure regular defrosts, the interval between defrosts must be

greater than the maximum defrost duration, plus the dripping time and post-dripping time;

• if “dI”=0 and no timed defrosts have been set, defrosts can only be

performed at power on, from digital input, from the supervisor and from the keypad.

Other defrost parameters

Par. Description Def Min Max UOM

d3 Defrost activation delay 0 0 250 min d4 Defrost at start-up

0/1=disabled/enabled

001-

d5 Defrost delay at start-up (if d4=1) or from dI 0 0 250 min dd Dripping time after defrost (fans o ) 2 0 15 min d8 High temperature alarm bypass time after

defrost (and door open)

1 0 250 min

d9 Defrost priority over compressor protectors 0/1

= yes/no

001-

d/1 Display defrost probe 1 - - - °C/°F d/2 Display defrost probe 2 - - - °C/°F dC Time base for defrost

0 = dI in hours, dP1 and dP2 in minutes 1 = dI in minutes, dP1 and dP2 in seconds

001-

Tab. 6.l

• d3 determines the time that must elapse, when the defrost is activated,

between the stopping of the compressor (heater defrost) or the starting of the compressor (hot gas defrost), and the activation of the defrost relays on the main and auxiliary evaporators;

• d4 determines whether to activate a defrost when switching controller

on. The defrost call at start-up has priority over activation of the compressor and the continuous cycle. Defrosting when switching controller on may be useful in special situations.

Example: there are frequent power failures in the system. In the event of a power failure, the instrument resets the internal clock that calculates the interval between two defrosts, starting from zero again. If the frequency of the power failure were, in an extreme case, greater than the defrost frequency (e.g. a power failure every 8 hours, against a defrost every 10 hours) the controller would never perform a defrost. In a situation of this type, it is preferable to enable defrost on start-up, above all if the defrost is controlled by temperature (probe on the evaporator), therefore avoiding unnecessary defrosts or at least reducing the running times. For systems with a large number of units, if selecting defrosts at start-up, after a power failure, all the units will start a defrost. This may cause voltage overloads.

To overcome this, parameter ‘d5’ can be used, which adds a delay before the defrost; the delay must obviously must be di erent for each unit.

• d5 represents the time that must elapse between the start-up of the

controller and the start of the defrost on start-up;

• dd is used to force the stop of the compressor and of the evaporator

fan after a defrost so as to assist the dripping of the evaporator same.

• d8 indicates the high temperature alarm signal bypass time after

the end of a defrost or when opening the door, if the digital input is connected to the door switch;

• d9 overrides the compressor protection times c1, c2, c3 at the start of

the defrost;

• d/1 and d/2 are used respectively to display the values read by defrost

probe 1 and 2;

• dC is used to change the unit of measure (hours or minutes) used to

count the times for parameters dI (defrost interval, hours or minutes,), dP1 and dP2 (defrost duration).

6.10 Evaporator fans

The evaporator fans can be managed according to the temperature measured by the defrost and control probes. The deactivation threshold is equal to the value of parameter F1, and the hysteresis is equal to the value of A0.

Note: during the dripping time and post-dripping time, if set, the

evaporator fans are always o

Below are the parameters involved in managing the evaporator fans, and an example of the trend based on the di erence between the evaporator temperature and the value of the virtual probe (F0=1). If F0=2, activation depends solely on the evaporator probe temperature.

Par. Description Def Min Max UOM

F0 Evaporator fan management

0 = always on 1 = activation based on Sd-Sv (di erence between virtual probe and evaporator temperature) 2 = activation based on Sd (evaporator temperature)

002-

F1 Fan activation temperature (only if F0 = 1

or 2)

5.0 -50 200 °C/°F

A0 Alarm and fan di erential 2.0 0.1 20 °C/°F

Tab. 6.m

F0=1

OFF

FAN

Sd - Sv

F1-A0

F0=2

OFF

FAN

F1-A0

Fig. 6.s

Key

Sd Defrost probe A0 Di erential FAN Evaporator fans t Time F1 Fan activation temperature Sv Virtual probe

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

The fan can be switched o in the following situations:

• when the compressor is o (parameter F2);

• during the defrost (parameter F3).

During the dripping period (parameter dd > 0) and the post-dripping period (parameter Fd > 0) the evaporator fans are always o . This is useful to allow the evaporator to return to temperature after defrosting, thus avoiding blowing warm hot and moist air into the refrigerator. The evaporator fans can be forced on during normal control (parameter F2) and during defrost (parameter F3).

Par. Description Def Min Max UOM

dd Dripping time after defrost (fans o ) 2 0 15 min F2 Evaporator fans with compressor o

0 = See F0 1 = Always o

101-

F3 Evaporator fans during defrost

0/1=on/o

101-

Fd Post-dripping time (fans o ) 1 0 15 min

Tab. 6.n

6.11 Condenser fans

The condenser fans are activated based on parameters F4 and F5. After the compressor is  rst started, the condenser fans are activated at F4+0.2 degrees to o set any rapid temperature increases that the probe cannot keep up with. Subsequently, the fans are switched on and o at F4+F5 and F4.

Par. Description Def Min Max UOM

F4 Condenser fan deactivation temperature 40 -50 200 °C/°F F5 Condenser fan activation di erential 5.0 0.1 20 °C/°F

Tab. 6.o

OFF

FA N

F4 + F5

F4 + 0.2

First switch-on

Fig. 6.t

Key

Sc Condenser probe Sv Virtual probe FAN Condenser fans t Time F4 Deactivation temperature F5 Di erential

Note: if no condenser probe is selected, the condenser fan output is

deactivated.

6.12 Duty setting (par. c4)

If alarm “rE” (virtual control probe fault) is activated, this parameter is used to ensure operation of the compressor until the fault is resolved. As the compressor is no longer able to operate based according to the temperature (due to the probe fault), it is made to run cyclically with a running time equal to the value assigned to parameter c4 and a  xed OFF time of 15 minutes.

Par. Description Def Min Max UOM

c4 Compressor running time with duty setting 0 0 100 min

OFF

CMP

Fig. 6.u

6.13 Running time defrost (par. d10, d11)

Running time is a special function that determines when the refrigeration unit needs defrosting. In particular, it is assumed that if the evaporator temperature measured by probe Sd remains continuously below a certain set threshold (d11) for a certain time (d10), the evaporator may be frozen and a defrost is activated. The time is reset if the temperature returns above the threshold.

Par. Description Def Min Max UOM

d10 Defrost time in “Running time” mode

0 = function disabled

0 0 250 hour

d11 Running time defrost temperature threshold 1 -20 20 °C/°F

Tab. 6.p

OFF

DEF

d11

dt1

d10

Fig. 6.v

Key

Sd Defrost probe t time DEF Defrost

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

7. PARAMETER TABLE

Key:

Parameter type: Variable type: Noted:

C = Con guration, A = analogue,

• MSYFCH = parameter visible on models IREVM%, IREVS%, IREVY%, IREVF%, IREVC% and PBEVH%;

F = frequent I = integer,

• The grey rows in the table denote masked parameters

D = digital

User Par. Description Models Def Min Max UOM Type CAREL SVP ModBus® R/W

Pro

C /2 Probe measurement stability MSYFCH 4 1 15 - I 15 115 R/W C /3 Probe display stability

Value Display delay (s) Value Display delay (s) 0 disabled 8 50 15 960 210 1075 315 1190 4 20 12 105 5 25 13 120 6 30 14 150 7 40 15 180

MSYFCH 0 0 15 - I 16 116 R/W

C /4 Virtual probe composition

0 = Control probe S1 100 = Probe S2

MSYFCH 0 0 100 - I 17 117 R/W

C /5 Temperature unit of measure: 0 = °C; 1 = °F MSYFCH 0 0 1 - D 40 40 R/W C /6 Display decimal point: 0/1=no/yes MSYFCH 0 0 1 - D 41 41 R/W C /tI Display on user terminal

1 Virtual probe 5 Probe 4 2 Probe 1 6 Reserved 3 Probe 2 7 Set point 4 Probe 3

MSYFCH 1 1 7 - I 18 118 R/W

C /tE Reading on remote display

0 Not  tted 4 Probe 3 1 Virtual probe 5 Probe 4 2 Probe 1 6 Reserved 4 Probe 3

MSYFCH 0 0 6 - I 19 119 R/W

C /P Type of probe

0 = NTC Standard Range -50T90°C 1 = NTC Enhanced Range -40T150°C 2 = PTC Standard Range -50T150°C

MSYFCH 0 0 2 - I 20 120 R/W

C /A2 Probe 2 con guration (S2)

0 Absent 3 Condenser 1 Product (display only) 4 Frost 2 Defrost

YFCH

200044--Il21

121

R/W

C /A3 Probe 3 con guration (S3/ DI1)

0 Digital input 1 3 Condenser 1 Product (display only) 4 Frost 2 Defrost

MSYFCH 0 0 4 - I 22 122 R/W

C /A4 Probe 4 con guration (S4/ DI2)

0 Digital input 2 3 Condenser 1 Product (display only) 4 Frost 2 Defrost

MSYFCH 0 0 4 - I 23 123 R/W

C /c1 Probe 1 calibration MSYFCH 0.0 -20 20 - A 11 11 R/W C /c2 Probe 2 calibration MSYFCH 0.0 -20 20 - A 12 12 R/W C /c3 Probe 3 calibration MSYFCH 0.0 -20 20 - A 13 13 R/W C /c4 Probe 4 calibration MSYFCH 0.0 -20 20 - A 14 14 R/W

User Par. Description Models Def Min Max UOM Type CAREL SVP ModBus® R/W

Ctl

F St Set point MSYFCH 0.0 r1 r2 °C/°F A 16 16 R/W F rd Di erential SYFCH 2.0 0.1 20 °C/°F A 17 17 R/W C rn Neutral zone SYFCH 4.0 0.0 60 °C/°F A 34 34 R/W C rr Reverse di erential SYFCH 2.0 0.1 20 °C/°F A 35 35 R/W C r1 Minimum set point MSYFCH -50 -50 r2 °C/°F A 18 18 R/W C r2 Maximum set point MSYFCH 60 r1 200 °C/°F A 19 19 R/W

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

C r3 Operating mode

0 = Direct with defrost control (cooling) 1 = Direct (cooling) 2 = Reverse (heating)

SYFCH 0 0 2 - I 25 125 R/W

C r4 Automatic night-time set point variation MSYFCH 3.0 -20 20 °C/°F A 20 20 R/W C r5 Enable temperature monitoring: 0/1=no/yes MSYFCH 0 0 1 - D 42 42 R/W F rt Duration of current max and min temperature monitoring session MSYFCH 0 0 999 hour I 26 126 R F rH Maximum temperature read MSYFCH - - - °C/°F A 21 21 R F rL Minimum temperature read MSYFCH - - - °C/°F A 22 22 R

User Par. Description Models Def Min Max UOM Type CAREL SVP ModBus® R/W

CMP

C c0 Compressor, fan and AUX start delay at power on SYFCH 0 0 15 min I 27 127 R/W C c1 Minimum time between successive compressor starts SYFCH 0 0 15 min I 28 128 R/W C c2 Minimum compressor o time SYFCH 0 0 15 min I 29 129 R/W C c3 Minimum compressor on time SYFCH 0 0 15 min I 30 130 R/W C c4 Compressor running time with duty setting SYFCH 0 0 100 min I 31 131 R/W C cc Continuous cycle duration SYFCH 0 0 15 hour I 32 132 R/W C c6 Low temperature alarm bypass time after continuous cycle SYFCH 2 0 250 hr/

min

I 33 133 R/W

C c7 Maximum pump down time (PD)

0 = Pump down disabled

SYFCH 0 0 900 s I 34 134 R/W

C c8 Compressor start delay after opening PD valve SYFCH 5 0 60 s I 35 135 R/W C c9 Autostart in pump down

0 = Disabled 1 = Pump down whenever closing pump down valve & following low pressure switch activation with no cooling demand

SYFCH 0 0 1 - D 43 43 R/W

C c10 Pump down by time or pressure

0/1= pressure/ time

SYFCH 0 0 1 - D 44 44 R/W

C c11 Second compressor start delay SYFCH 4 0 250 s I 36 136 R/W

User Par. Description Models Def Min Max UOM Type CAREL SVP ModBus® R/W

dEF

C d0 Type of defrost

0 = heater by temperature 1 = hot gas by temperature 2 = heater by time (Ed1, Ed2 not shown) 3 = hot gas by time (Ed1, Ed2 not shown) 4 = heater by time with temperature control (Ed1, Ed2 not shown)

SYFCH 0 0 4 - I 37 137 R/W

F dI Maximum time between consecutive defrosts

0 = defrost not performed

SYFCH 8 0 250 hr/min I 38 138 R/W

F dt1 End defrost temperature probe 2 SYFCH 4 -50 200 °C/°F A 23 23 R/W F dt2 End defrost temperature probe 3 (aux evaporator) SYFCH 4 -50 200 °C/°F A 24 24 R/W F dt3 End defrost temperature probe 4 SYFCH 4 -50 200 °C/°F A 38 38 R/W F dP1 Maximum defrost duration SYFCH 30 1 250 min/s I 39 139 R/W F dP2 Maximum aux evaporator defrost duration SYFCH 30 1 250 min/s I 40 140 R/W C d3 Defrost activation delay SYFCH 0 0 250 min I 41 141 R/W C d4 Defrost at start-up: 0/1=disabled/enabled SYFCH 0 0 1  ag D 45 45 R/W C d5 Defrost delay at start-up (if d4=1) or from dI SYFCH 0 0 250 min I 42 142 R/W C d6 Terminal display during defrost

0 = Temperature alternating with dEF 1 = Display disabled 2 = dEF

SYFCH 1 0 2 - I 43 143 R/W

F dd Dripping time after defrost (fans o ) SYFCH 2 0 15 min I 44 144 R/W F d8 High temperature alarm bypass time after defrost (and door open) SYFCH 1 0 250 hr/min I 45 145 R/W C d8d Alarm bypass time after door open SYFCH 0 0 250 min I 139 239 R/W C d9 Defrost priority over compressor protectors

0/1 = yes/no

SYFCH 0 0 1 - D 46 46 R/W

F d/1 Display defrost probe 1 MSYFCH - - - °C/°F A 1 1 R F d/2 Display defrost probe 2 MSYFCH - - - °C/°F A 2 2 R C dC Time base for defrost

0 = dI in hours, dP 1 and dP2 in minutes 1 = dI in minutes, dP1 and dP2 in seconds

SYFCH 0 0 1 - D 47 47 R/W

C dC1 Time base for c6 and d8: 0/1 = hours/minutes SYFCH 0 0 1 - D 65 65 R/W C d10 Defrost time in “Running time” mode0 = function disabled SYFCH 0 0 250 hour I 46 146 R/W C d11 Running time defrost temperature threshold SYFCH 1.0 -20 20 °C/°F A 25 25 R/W C d12 Advanced defrosts

d12 Skip defrost Automatic variation of dI

0 Disabled Disabled 1 Disabled Enabled 2 Enabled Disabled 3 Enabled Enabled

SYFCH 0 0 3 - I 47 147 R/W

C dn Nominal defrost duration SYFCH 65 1 100 - I 48 148 R/W C dH Proportional factor for variation of dI SYFCH 50 0 100 - I 49 149 R/W

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

User Par. Description Models Def Min Max UOM Type CAREL SVP ModBus® R/W

ALM

C A0 Alarm and fan di erential MSYFCH 2.0 0.1 20 °C/°F A 26 26 R/W C A1 Alarm thresholds (AL, AH) relative to set point or absolute

0/1=relative/absolute

MSYFCH 001- D48 48 R/W

F AL Low temperature alarm threshold

If A1= 0, AL=0: alarm disabled If A1= 1, AL=-50: alarm disabled

MSYFCH 0.0 -50 200 °C/°F A 27 27 R/W

F AH High temperature alarm threshold

If A1= 0, AL=0: alarm disabled If A1= 1, AL=200: alarm disabled

MSYFCH 0.0 -50 200 °C/°F A 28 28 R/W

F Ad High and low temperature alarm delay MSYFCH 120 0 250 min I 50 150 R/W C A4 Digital input con guration 1 (DI1)

0 = not active 1 = immediate external alarm 2 = delayed external alarm 3 = select probes (ir33M) / enable defrost 4 = start defrost 5 = door switch with compressor and evaporator fans o 6 = remote ON/OFF 7 = curtain switch 8 = low pressure switch 9 = door switch with fans o 10 = direct/reverse operation 11 = light sensor 12 = activate aux output 13 = door switch with compressor and fans o and light not managed 14 = door switch with fans o and light not managed

SYFCH 0 0 14 - I 51 151 R/W

C A5 Digital input con guration 2 (DI2)

See A4

MSYFCH 0 0 14 - I 52 152 R/W

C A6 Stop compressor on external alarm

0 = compressor always o ; 100 = compressor always on

SYFCH 0 0 100 min I 53 153 R/W

C A7 Digital alarm input delay

0 = control outputs unchanged

SYFCH 0 0 250 min I 54 154 R/W

C A8 Enable alarms Ed1 and Ed2 (end defrost by timeout)

0 = alarms disabled

SYFCH 001- D49 49 R/W

C Ado Light management with door switch

Ado Light when ope-

ning the door

Algorithm Description

0o

Extended normal Open-close Open-

close-open-close

1o

normal

extended

MSYFCH 001- D50 50 R/W

C Ac High condenser temperature alarm threshold SYFCH 70.0 0 200 °C/°F A 29 29 R/W C AE High condenser temperature alarm di erential SYFCH 10.0 0.1 20 °C/°F A 30 30 R/W C Acd High condenser temperature alarm delay

0 = Immediate alarm

SYFCH 0 0 250 min I 56 156 R/W

C AF Light sensor OFF time

0 = Sensor in the door jamb > 0 = Sensor inside the cold room or cabinet

SYFCH 0 0 250 s I 57 157 R/W

C ALF Frost protection alarm threshold MSYFCH -5.0 -50 200 °C/°F A 36 36 R/W C AdF Frost protection alarm delay MSYFCH 1 0 15 min I 136 236 R/W

User Par. Description Models Def Min Max UOM Type CAREL SVP ModBus® R/W

FAn

C F0 Evaporator fan management

0 = always on 1 = activation based on Sd-Sv (di erence between virtual probe and evaporator temperature) 2 = activation based on Sd (evaporator temperature)

FCH 0 0 2 - I 58 158 R/W

F F1 Fan activation temperature (only if F0 = 1 or 2) FCH 5.0 -50 200 °C/°F A 31 31 R/W C F2 Evaporator fans with compressor o

0 = See F01 = Always o

FCH 1 0 1 - D 51 51 R/W

C F3 Evaporator fans during defrost: 0/1=on/o FCH 1 0 1 - D 52 52 R/W F Fd Post-dripping time (fans o ) FCH 1 0 15 min I 59 159 R/W C F4 Condenser fan deactivation temperature MSYFCH 40 -50 200 °C/°F A 32 32 R/W C F5 Condenser fan activation di erential MSYFCH 5.0 0.1 20 °C/°F A 33 33 R/W

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

User Par. Description Models Def Min Max UOM Type CAREL SVP ModBus® R/W

CnF

C H0 Serial address MSYFCH 1 0 207 - I 60 160 R/W C H1 AUX output con guration

CH 1 0 13 - I 61 161 R/W

C H2 Disable keypad functions MSYFCH 1 0 6 - I 62 162 R/W C H4 Buzzer: 0/1=enabled/disabled MSYFCH 0 0 1 - D 53 53 R/W C H5 AUX2 output con guration: see H1 H 3 0 13 - I 64 164 R/W C H6 Terminal keypad lock con guration

0 = all buttons enabled

MSYFCH 0 0 255 - I 65 165 R/W

C H7 Keypad: 0 = standard; 1 = modi ed MSYFCH 0 0 1 - D 54 54 R/W C H8 Output switched with scheduler 0 = Light; 1= AUX MSYFCH 0 0 1 - D 60 60 R/W C H9 Set point variation with scheduler 0/1 = no/yes MSYFCH 0 0 1 - D 61 61 R/W C Hdn Number of default parameter sets available MSYFCH 0 0 6 - I 137 237 R/W C Hdh Anti-sweat heater o set

0 = anti-sweat heater function disabled (°C) 32 = anti-sweat heater function disabled (°F)

MSYFCH 0 -50 200 °C/°F A 37 37 R/W

C HrL Remote light relay status on Master: 0 = disabled MSYFCH 0 0 1 - D 62 62 R/W C HrA Remote AUX relay status on Master: 0 = disabled MSYFCH 0 0 1 - D 63 63 R/W C HSA Remote controller alarms on Master: 0 = disabled MSYFCH 0 0 1 - D 64 64 R/W C In Type of unit

0 = Normal 1 = Master 2…6 = Slave 1 to 5

MSYFCH 0 0 6 - I 138 238 R/W

User Par. Description Models Def Min Max UOM Type CAREL SVP ModBus® R/W

HcP

C HAn Number of HA alarms MSYFCH 0 0 15 - I 67 167 R C HA…

HA2

HA HACCP alarms activated (press Set) MSYFCH - - - - - - - R

y__ Alarm 1 to 3 - Year - 0 0 99 years I 70/76/82 170 R M__ Alarm 1 to 3 - Month - 0 1 12 month I 71/77/83 171 R d__ Alarm 1 to 3 - Day of the month - 0 1 7 day I 72/78/84 172 R h__ Alarm 1 to 3 - Hour - 0 0 23 hour I 73/79/84 173 R n__ Alarm 1 to 3 - Minute - 0 0 59 minute I 74/80/85 174 R

t__ Alarm 1 to 3 - Duration - 0 0 99 hour I 75/81/86 175 R C HFn Number of HF alarms MSYFCH I 68 176…181 R C HF…HF2 HF HACCP alarms activated (press Set) MSYFCH - - - - I - - R

y__ Alarm 1 to 3 - Year 0 0 99 years I 88/94/100 188 R

M__ Alarm 1 to 3 - Month 0 1 12 month I 89/95/101 189 R

d__ Alarm 1 to 3 - Day of the month 0 1 7 day I 90/96/102 190 R

h__ Alarm 1 to 3 - Hour 0 0 23 hour I 91/97/103 191 R

n__ Alarm 1 to 3 - Minute 0 0 59 minute I 92/98/104 192 R

t__ Alarm 1 to 3 - Duration 0 0 99 hour I 93/99/105 193 R C Htd HACCP alarm delay

0 = Monitoring disabled

MSYFCH 0 0 250 min I 69 169 R/W

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

User Par. Description Models Def Min Max UOM Type CAREL SVP ModBus® R/W

rtc

C td1…8 Defrost 1 to 8 (press Set) SYFCH - - - - - - R/W

d__ Defrost 1 to 8 - day 0 0 11 day I 106/109/…/127 206/209/…/227 R/W h__ Defrost 1 to 8 - hour 0 0 23 hour I 107/110/…128 207/210/…/228 R/W n__ Defrost 1 to 8 - minute 0 0 59 min I 108/111/…129 208/211/…/229 R/W

C ton Light/aux on time SYFCH - - - - - - R/W

d__ Day 0 1 7 day I 130 230 R/W h__ Hour 0 0 23 hour I 131 231 R/W n__ Minute 0 0 59 minute I 132 232 R/W

C toF Light/aux o time SYFCH - - - - - - - R/W

d__ Day 0 1 7 day I 133 233 R/W h__ Hour 0 0 23 hour I 134 234 R/W n__ Minute 0 0 59 minute I 135 235 R/W

C tc Date/time (press Set) MSYFCH - - - - R/W

y__ Date/time: year 12 0 99 year I 1 101 R/W m__ Date/time: month 8 1 12 month I 2 102 R/W d__ Date/time: day of the month 1 1 31 day I 3 103 R/W u__ Day of the week 1 1 7 day I 4 104 R/W h__ Date/time: hour 0 0 23 hour I 5 105 R/W n__ Date/time: minute 0 0 59 minute I 6 106 R/W

7.14 Variables only accessible via serial connection

Description Type CAREL SVP Modbus R/W

Virtual probe A 3 3 R Probe 1 reading A 4 4 R Probe 2 reading A 5 5 R Probe 3 reading A 6 6 R Probe 4 reading A 7 7 R Number of parameter sets available I 137 237 R Digital input 1 status D 6 6 R Digital input 2 status D 7 7 R Virtual probe fault alarm D 9 9 R Probe alarm 1 D 10 10 R Probe alarm 2 D 11 11 R Probe alarm 3 D 12 12 R Probe alarm 4 D 13 13 R Compressor status relay D 1 1 R Defrost relay status D 2 2 R Fan relay status D 3 3 R AUX 1 relay status D 4 4 R AUX 2 relay status D 5 5 R Digital input 1 status D 6 6 R Digital input 2 status D 7 7 R Defrost status D 31 31 R Defrost call command D 34 34 RW Continuous cycle status D 35 35 R Continuous cycle call command D 36 36 RW Door status D 37 37 R AUX activation command D 57 57 RW Light activation command D 58 58 RW Controller ON/OFF D 59 59 RW Password I 14 114 RW Virtual probe fault alarm D 9 9 R Probe 1/2/3/4/5 fault alarm D 10/11/12/13/14 10/11/12/13/14 R Low temperature alarm D 15 15 R High temperature alarm D 16 16 R Immediate external alarm D 17 17 R Delayed external alarm D 18 18 R Evaporator 1 defrost timeout alarm D 19 19 R Evaporator 2 defrost timeout alarm D 20 20 R Pump down timeout alarm D 21 21 R Low pressure alarm D 21 21 R High condenser temperature alarm D 24 24 R Door open for too long alarm D 25 25 R RTC error D 26 26 R Control parameter EEPROM error D 27 27 R Operating parameter EEPROM error D 28 28 R HA HACCP alarm D 29 29 R HF HACCP alarm D 30 30 R Alarm autostart in pump down D 32 32 R

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

8. SIGNALS AND ALARMS

8.1 Signals

Signals are messages shown on the display to notify the user of the control procedures in progress (e.g. defrost) or con rm the controls from the keypad or remote control.

Code Icon Description

--- - Probe not enabled dEF

Defrost running dFb Start defrost call dFE End defrost call cc

Continuous cycle ccb Start continuous cycle call ccE End continuous cycle call HcP

Access HACCP menu

Ed1 - Defrost on evaporator 1 ended by timeout Ed2 - Defrost on evaporator 2 ended by timeout On - Switch ON OFF - Switch OFF rES - Reset alarms with manual reset

Reset HACCP alarms

Reset temperature monitoring AUX - Auxiliary output activation call d/1 Display defrost probe 1

Tab. 8.a

8.2 Alarms

There are two types of alarms:

• system: EEPROM, communication, HACCP, high (HI) and low (LO)

temperature;

• control: pump down ended by timeout (Pd), low pressure (LP).

The EE/EF data memory alarms shutdown the controller. The auxiliary digital outputs AUX1, AUX2 can be con gured to signal the alarm status, normally open or normally closed. See chapter 5. The controller indicates alarms due to faults on the controller itself, on the probes or in network communication. An alarm can also be activated from an external contact, immediate or delayed. See paragraph 5.2. The display shows “IA” or “dA” and at the same time the bell icon  ashes and the buzzer is activated. If more than one error occurs, these are displayed in sequence.

Example: display after HI error on ir33+:

Note: to mute the buzzer press Prg/mute.

8.3 Reset alarms

All the alarms with manual reset can be cleared by pressing Prg/mute and UP together for more than 5 seconds. Example: manually reset the frost protection alarm (AFr).

ir33+



ir33+ wide/ ir33+ small wide



easy wide/ easy small wide

aux

prg

mute



aux

prg

mute

8.4 HACCP alarms and display

To activate monitoring, see par. 8.6. (HACCP = Hazard Analysis and Critical Control Point). HACCP allows control of the operating temperature, recording any anomalies due to power failures or an increase in the temperature due to other causes (breakages, extreme operating conditions, user errors, etc.). Two types of HACCP event are managed:

• type HA alarms, high temperature during the operation;

• type HF alarms, high temperature after power failure (blackout).

When an alarm is recorded, the HACCP LED  ashes, the display shows the alarm code, the alarm is saved and the alarm relay and buzzer are activated.

Example: display after HA error on ir33+ and alarm reset:

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

To display the HA and HF alarms:

• enter the HACCP menu by pressing:

ir33+

ir33+ wide Easy wide

• scroll the list of alarms by pressing UP and DOWN;

• press Set to select the required alarm (HA, HA1, HA2/HF, HF1, HF2);

• use UP or DOWN to see the description of the alarm: year, month, day,

hours, minutes and duration in minutes of the selected alarm;

• press Prg/mute again to return to the previous list.

In addition, the HACCP alarm menu allows the following operations:

• delete the HACCP alarm signal by pressing, for 5 seconds:

ir33+

ir33+ wide Easy wide

• delete the HACCP alarm and all the alarms saved by pressing, for 5

seconds:

ir33+

+ +

ir33+ wide

Easy wide

This procedure displays the message rES, deletes the entire memory of alarms and reinitialises monitoring of the HACCP alarms.

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

Code

display

Cause of the alarm Icon  ashing

on display

Alarm

relay

Buzzer Reset PD valve Compressor Defrost Evaporator

fans

Condenser

fans

Continuous

cycle

AUX

neutral

zone

AUX light

Anti-sweat

AUX

auxiliary

Anti-sweat

AUX second

step

rE Virtual control probe fault

ON ON autom. duty setting (c4) duty setting (c4) - - - - OFF OFF OFF duty setting

(c4)

E0 Probe S1 fault

OFF OFF autom. duty setting

(c4)

duty setting (c4) - - - - OFF OFF OFF duty setting

(c4)

E1 Probe S2 fault

OFF OFF automatic - - - - - - - - - -

E2 Probe S3 fault

OFF OFF autom. - - - - - - - - - -

E3 Probe S4 fault

OFF OFF autom. - - - - - - - - - -

LO Low temperature alarm

ON ON autom. - - - - - - - - - -

HI High temperature alarm

ON ON autom. - - - - - - - OFF OFF -

AFr Frost protection alarm

ON ON manual OFF OFF - - - - - - - OFF

IA Immediate alarm from external

contact

ON ON automatic duty setting (A6) duty setting (A6) - - - - OFF OFF OFF duty setting

(A6)

dA Delayed alarm from external

contact

ON ON automatic duty setting (A6) - - - - - OFF if

A7≠0

OFF if A7≠0 OFF if

A7≠0

duty setting

(A6) if A7≠0

Pd Alarm maximum pump down

time

ON ON automatic/ manual - - - - - - - - - -

LP Low pressure alarm

ON ON automatic/ manual OFF OFF - - - - - - - OFF

AtS Autostart in pump down

ON ON automatic/ manual - - - - - - - - - -

cht High condenser temp. pre-alarm - OFF OFF automatic/ manual - - - - - - - - - -

CHt High condenser temperature

alarm

ON ON manual OFF OFF - - - - - OFF OFF OFF

dor Door open for too long alarm

ON ON automatic - - - - - - - - - -

Etc Real time clock fault

OFF OFF automatic/ manual - - - - - - - - - -

EE Unit parameter EEPROM error

OFF OFF automatic OFF OFF not run OFF OFF not run OFF OFF OFF OFF

EF Operating parameter EEPROM

error

OFF OFF automatic OFF OFF not run OFF OFF not run OFF OFF OFF OFF

HA Type HA HACCP alarm

OFF OFF manual - - - - - - - - - -

HF Type HF HACCP alarm

OFF OFF manual - - - - - - - - - -

n1...n6

indicate unit alarm ON 1...6 in

network

ON OM automatic - - - - - - - - - -

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

8.5 Alarm parameters

Alarm parameters and activation

AAL (AH) is used to determine the activation threshold for the low (high) temperature alarm LO (HI). The value set for AL (AH) is continuously compared against the value measured by the control probe. Parameter Ad represents the alarm activation delay, in minutes; the low temperature alarm (LO) is activated only if the temperature remains below the value of AL for a time greater than Ad. The alarm may relative or absolute, depending on the value of parameter A1. In the former case (A1=0), the value of AL indicates the deviation from the set point and thus the activation point for the low temperature alarm is: set point - AL. If the set point changes, the activation point also changes automatically. In the latter case (A1=1), the value of AL indicates the low temperature alarm threshold. The low temperature alarm active is signalled by the buzzer and LO shown on the display. The same applies to the high temperature alarm (HI), with AH instead of AL.

Par Description Def Min Max UOM

A0 Alarm and fan di erential 2.0 0.1 20.0 °C/°F A1 Alarm thresholds (AL, AH) relative to set

point or absolute 0/1=relative/absolute

001-

AL Low temperature alarm threshold

If A1= 0, AL=0: alarm disabled If A1= 1, AL=-50: alarm disabled

0 -50.0 200 °C/°F

AH High temperature alarm threshold

If A1= 0, AL=0: alarm disabled If A1= 1, AL=200: alarm disabled

0 -50.0 200 °C/°F

Ad High and low temperature alarm delay 120 0 250 min A6 Stop compressor on external alarm

0 = compressor always o ; 100 = compressor always on

0 0 100 min

A7 Digital alarm input delay

0 = control outputs unchanged

0 0 250 min

Tab. 8.a

Note:

• alarms LO and HI have automatic reset. A0 represents the hysteresis

between the alarm activation value and deactivation value;

• if Prg/mute is pressed when the value measured is above one of the

thresholds, the buzzer is immediately muted, while the alarm code and the alarm output, if set, remain active until the value measured is outside of the activation threshold. For delayed alarms from digital input (A4=2, code dA), the contact must remain open for a time greater than A7. In the case of an alarm event, a counter starts and generates an alarm when reaching the minimum time A7. If during the count the value measured returns within the threshold or the contact closes, the alarm is not signalled and the count is reset. When a new alarm condition occurs, the count starts from 0 again. Parameter A6 has a similar meaning to parameter c4 (duty setting). If an external alarm occurs (immediate or delayed) the compressor works for a time equal to the value set for A6 and remains o for a  xed time of 15 minutes.

OFF

ALARM

Fig. 8.a

Key

LO Low temperature alarm S1 Control probe HI High temperature alarm

8.6 HACCP alarm parameters and monitoring

HA alarms

The alarm queue can be displayed by accessing parameters HA to HA2. The type HA alarm is generated if during normal operation the temperature read by the control probe exceeds the high temperature threshold for the time Ad+Htd. Consequently, compared to the normal high temperature alarm already signalled by the controller, the type HA HACCP alarm is delayed by a further time Htd speci cally for HACCP recording. The order of alarms listed is progressive, HA is the most recent alarm. A maximum of 3 errors are saved, in a FIFO list (HA to HA2): FIFO (First In First Out) management means the  rst error recorded is the  rst to be cancelled when the list is full and needs to be updated. The last error saved is displayed for parameter HA. HAn indicates the number of type HA alarms activated.

Par. Description Def Min Max UOM

HAn Number of HA alarms 0 0 15 HA…HA2 HA HACCP alarms activated (press

Set)

----

y__ Alarm 1 to 3 - Year 0 0 99 year M__ Alarm 1 to 3 - Month 0 1 12 month d__ Alarm 1 to 3 – Day of the month 0 1 31 day h__ Alarm 1 to 3 – Hour 0 0 23 hour n__ Alarm 1 to 3 – Minute 0 0 59 minute

--- Alarm 1 to 3 – Duration 0 0 240 hour Htd HACCP alarm delay

0 = Monitoring disabled

0 0 240 min

Tab. 8.b

OFF

ALARM

Ad Htd

Fig. 8.b

Key

S1 Virtual probe Ad High and low temperature

alarm delay

St Set point Htd HACCP alarm delay

0 = monitoring disabled

AH High temperature alarm

threshold

t Time

ALARM HA HACCP alarm

HF alarms

The type HF HACCP alarm is generated following a power failure for an extended time (> 1 minute), if when power returns the temperature read by the control probe exceeds the AH high temperature threshold. HFn indicates the number of type HF alarms activated.

Par. Description Def Min Max UOM

HFn Number of HF alarms 0 0 15 HF…HF2 HF HACCP alarms activated (press Set) - - - y__ Alarm 1 to 3 - Year 0 0 99 year M__ Alarm 1 to 3 - Month 0 1 12 month d__ Alarm 1 to 3 – Day of the month 0 1 31 day h__ Alarm 1 to 3 – Hour 0 0 23 hour n__ Alarm 1 to 3 – Minute 0 0 59 minute

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

OFF

ALARM

black out

Fig. 8.c

Key

S1 Control probe Ad High and low temperature alarm

delay

AH High temperature alarm

threshold

Htd HACCP alarm delay

0 = monitoring disabled ALARM HF HACCP alarm t Time St Set point

8.7 High condenser temperature alarm

The condenser temperature can be monitored and high temperature situations signalled, most likely when the condenser is blocked. The following  gure describes the signal.

Par Description Def Min Max UOM

Ac High condenser temperature alarm threshold 70 0 200 °C/°F AE High condenser temperature alarm di erential 10 0.1 20 °C/°F Acd High condenser temperature alarm delay

0 = Immediate alarm

0 0 250 min

Tab. 8.c

OFF

cht

Ac - AE

Ac - AE/2

OFF

CHT

Acd

Fig. 8.d

Key

t Time Ac High cond. temperature alarm

threshold Acd Alarm delay cht High cond. temperature pre-alarm Sc Condenser probe CHT High condensing temperature alarm AE High condensing temperature alarm di erential

8.8 Frost protection alarm

The frost protection alarm is only active if a probe has been set as the frost protection probe. If this probe measures a temperature less than the threshold ALF for a time greater than AdF, the alarm “AFr” (manual reset) is shown. See the parameter table.

Par Description Def Min Max UOM

ALF Frost protection alarm threshold -5 -50 200 °C/°F AdF Frost protection alarm delay 1 0 15 min

Tab. 8.d

OFF

ALARM

AFr

ALF

AdF

Fig. 8.e

Key

t Time AdF Frost protection alarm

delay

AFr Frost protection alarm threshold

8.9 Defrost ended by timeout alarm

Alarms Ed1 and Ed2 signal that a defrost has ended when reaching the maximum defrost duration. This can be disabled by setting A8 = 0.

Par Description Def Min Max UOM

A8 Enable alarms Ed1 and Ed2 (end

defrost by timeout) 0 = alarms disabled

0 0 250 min

Tab. 8.e

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

9. TECHNICAL SPECIFICATIONS

9.1 ir33+ technical speci cations

Power supply Model Voltage Power

IREVxxExxxx 230 V~, 50/60 Hz 3 VA, 25mA ~ max IREVxxAxxxx 115 V~, 50/60 Hz 3 VA, 50mA ~ max IREVxxHxxxx 115/230 V~, 50/60 Hz 6 VA, 50mA ~ max IREVxxLxxxx 12 to 24 V ~, 50/60 Hz, 12/30 Vdc 3 VA, 300 mA ~/ mAdc max IREVxx0xxxx 12 V ~, 50/60 Hz, 12/18 Vdc Only use SELV power supply

Insulation guaranteed by the power supply

IREVxxExxxx IREVxxAxxxx

insulation from extra low voltage parts reinforced, 6 mm clearance, 8 mm creepage, 3750V insulation

IREVxxHxxxx insulation from relay outputs basic, 3 mm clearance, 4 mm creepage, 1250V insulation IREVxxLxxxx insulation from extra low voltage parts to be guaranteed externally by safety transformer (SELV) IREVxx0xxxx insulation from relay outputs reinforced, 6 mm clearance, 8 mm creepage, 3750 V insulation

Inputs S1 (probe 1) NTC (IRxxx0xxxxx) or NTC and PTC (IRxxx7xxxxx)

S2 (probe 2) NTC (IRxxx0xxxxx) or NTC and PTC (IRxxx7xxxxx) DI1 voltage-free contact, contact resistance < 10 , closing current 6 mA S3 NTC (IRxxx0xxxxx) or NTC and PTC (IRxxx7xxxxx) DI2 voltage-free contact, contact resistance < 10 , closing current 6 mA S4 NTC (IRxxx0xxxxx) or NTC and PTC (IRxxx7xxxxx) Maximum distance between probes and digital inputs less than 10 m Note: in the installation it is recommended to separate the power and load connections from the probe, digital input, display and supervisor cables.

Probe type Std. Carel NTC 10k at 25°C, range from –50T90°C

measurement error: 1°C in the range –50T50°C

3°C in the range +50T90°C High temperature NTC

50k at 25°C, range –40T150°C

measurement error: 1.5°C in the range –20T115°C

4°C in the range outside of -20T115°C Standard Carel PTC 985 at 25°C, range from -50T150°C

measurement error 2°C in the range from –50T50°C4°C in the range from +50T150°C

Relay outputs

depending on the model EN60730-1 UL 873 model relay 250 V~ operating cycles 250 V~ operating cycles

IRxxxx(E,A)(P,Q,S,U,V,X,Y,Z)xxx R2(*) 5 (1) A 100000 5 A res 1 FLA

6 LRA C300

30000

IRxxxx(E,A)(N, R, C, B,A,M,L, T)xxx R3(*) 5 (1) A 100000 5 A res 1 FLA

6 LRA C300

30000

IRxxxx(E,A)(N, R, C, B, A, M, L, T)xxx R1, R2 8 (4)A N.O. 6(4) A N.C. 100000 8 A res 2 FLA 30000 IRxxxx(0, L, H)(N, R, C, B, A, M, L, T)xxx R2, R3, R4 (*) 2(2) A N.O./N.C. 12 LRA C300 IRxxxx(E,A)(P, Q, S, U, V, X, Y, Z)xxx R1 12 (2)A N.O./ N.C. 100000 12 A res 5 FLA 30000 IRxxxx(0, L, H)(N, R, C, B, A, M, L, T)xxx R1 12 (2)A N.O./ N.C. 100000 30 LRA C300 insulation from extra low voltage parts reinforced, 6 mm clearance, 8 mm creepage, 3750 V insulation insulation between independent relay outputs basic, 3 mm clearance, 4 mm creepage, 1250 V insulation

SSR outputs Max output voltage 12 Vdc

Output resistance 600 

Max output current 20 mA Connections Cable cross-section from 0.5 to 2.5 mm2 max current 12 A (*): Relay not suitable for  uorescent loads (neon lights, etc.) that use starters (ballasts) with phase shifting capacitors. Fluorescent lamps with electronic controllers or without phase shifting capacitors can be used, depending on the operating limits speci ed for each type of relay. The correct sizing of the power and connection cables between the instrument and the loads is the installer’s responsibility. Depending on the model, the maximum current at common terminals 1, 3 or 5 is 12 A. If using the controller at maximum operating temperature and at full load, the cables used must be suitable for operation at least up to 105 °C.

Clock error at 25° C ±10 ppm (±5 min/year)

error at 25° C -10T60 °C -50 ppm (27 min/year) Operating temperature -10T60 °C for all versions Operating humidity < 90% RH non-condensing Front panel ingress protection assembly on smooth and indeformable panel with IP65 gasket Environmental pollution 2 (normal situation) PTI of insulating materials printed circuits 250, plastic and insulating materials 175 Period of stress across the insulating parts long Heat and  re resistance category category D and category B (UL 94-V0) Class of protection against voltage surge category II Type of action and disconnection 1.B relay contacts (microswitching) Construction of the control device built-in, electronic Classi cation according to protection against electric shock class II when appropriately integrated Maximum distance between interface and display 10 m Programming key available on all models Safety standards compliant with relevant European standards

Tab. 9.a

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

9.2 ir33+ wide, ir33+ small wide, easy wide, easy small wide technical speci cations

Power supply

Model Voltage Power PBEVxxExxxx 230 V~(+10/-15%), 50/60 Hz 230 V~(+10/-10%), 50/60 Hz (16 A, 8 A, 8 A version) 3 VA, 25mA ~ max PBEVxxAxxxx 115 V~(+10/-15%), 50/60 Hz 115 V~(+10/-10%), 50/60 Hz (16 A, 8 A, 8 A version) 3 VA, 50mA ~ max PBEVxxHxxxx 115/230 V~, 50/60 Hz 6 VA, 50mA ~ max IREVxxLxxxx 12 to 24 V ~, 50/60 Hz, 12/30 Vdc 3 VA, 300 mA ~/ mAdc max IREVxx0xxxx 12 V ~, 50/60 Hz, 12/18 Vdc Only use SELV power supply

Insulation guaranteed by the power supply

IREVxxExxxx insulation from extra low voltage parts reinforced, 6 mm clearance, 8 mm creepage, 3750V insulation IREVxxAxxxxIREVxxHxxxx

insulation from relay outputs basic, 3 mm clearance, 4 mm creepage, 1250V insulation

IREVxxLxxxx insulation from extra low voltage parts to be guaranteed externally by safety transformer (SELV) IREVxx0xxxx insulation from relay outputs reinforced, 6 mm clearance, 8 mm creepage, 3750 V insulation

Inputs S1 (probe 1) NTC (PBxxx0xxxxx) or NTC and PTC (PBxxx7xxxxx)

S2 (probe 2) NTC (PBxxx0xxxxx) or NTC and PTC (PBxxx7xxxxx) DI1 voltage-free contact, contact resistance < 10 Ω, closing current 6 mA S3 NTC (PBxxx0xxxxx) or NTC and PTC (PBxxx7xxxxx) DI2 voltage-free contact, contact resistance < 10 Ω, closing current 6 mA S4 NTC (PBxxx0xxxxx) or NTC and PTC (PBxxx7xxxxx) Maximum distance between probes and digital inputs less than 10 m Note: in the installation it is recommended to separate the power and load connections from the probe, digital input, display and supervisor cables.

Probe type Std. Carel NTC 10k at 25°C, range from –50T90°C

measurement error: 1°C in the range –50T50°C

3°C in the range +50T90°C High temperature NTC

50kΩ at 25°C, range –40T150°C

measurement error: 1.5°C in the range –20T115°C

4°C in the range outside of -20T115°C Standard Carel PTC 985Ω at 25°C, range from -50T150°C

measurement error 2°C in the range from –50T50°C

4°C in the range from +50T150°C

Relay outputs depending on the model EN60730-1 UL873

Model relay 250 V~ operating cycles 250 V~ operating

cycles PBEVxx(E,A)(P,S,V,Y)xxx 5A(*) 5(1) A 100000 5A res. 1FLA 6 LRA C300 30000 PBEVxx(E,A)(N,C,A,L)xxx PBEVxx(O,H)(N;C;A;L)xxx

8 A(*) 8(4)A N.O. 6(4)A

N.C.2 (2)A N.O./N.C.

100000 8 A res. 2FLA 12 LRA C300 30000

PBEVxx(E,A)(P,S,V,Y)xxx 16 A(*) 10(4)A N.O.(up to

60°C) 12 (2) A

100000 12 A res. 5 FLA 30 LRA C300 30000

2 HP 10(10)A 100000 12 A res. 12 FLA 72 LRA 30000 Insulation from extra low voltage parts Reinforced, 6 mm clearance, 8 mm creepage, 3750 V insulation Insulation between independent relay outputs

Basic, 3 mm clearance, 4 mm creepage, 1250 V insulation

Connections Cable cross-section from 0.5 to 2.5 mm2 max current 12 A (*): Relay not suitable for  uorescent loads (neon lights, etc.) that use starters (ballasts) with phase shifting capacitors. Fluorescent lamps with electronic controllers

or without phase shifting capacitors can be used, depending on the operating limits speci ed for each type of relay. The correct sizing of the power and connection cables between the instrument and the loads is the installer’s responsibility. If using the controller at maximum

operating temperature and at full load, the cables used must be suitable for operation at least up to 105 °C.

Clock error at 25°C ±10 ppm (±5.3 min/year)

error in the range -10T60°C -50 ppm (27 min/year) Operating temperature -10T65°C for all versions Operating humidity < 90% RH non-condensing Storage temperature -20T70°C Storage humidity < 90% RH non-condensing Front panel ingress protection Assembly on smooth and indeformable panel with gasket: IP65 Environmental pollution 2 (normal situation) PTI of insulating materials Printed circuits 250 and insulating materials 175 Period of stress across the insulating parts long Heat and  re resistance category Category D and category B (UL 94 – V0) Class of protection against voltage surge Category II Type of action and disconnection 1.B relay contacts (microswitching) Construction of the control device Built-in, electronic Classi cation according to protection against electric shock Class II when appropriately integrated Maximum distance between interface and display 10 m Programming key Available on all models

Safety standards: compliant with the relevant European standards

Tab. 9.b

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

9.3 ir33+ part numbers

Features

IREVM00* IREVM0E* IREVS0* IREVS0L* IREVS0E* IREVY0* IREVY0L* IREVY0E* IREVC00* IREVC*L* IREVC*H* IREVF*E*

Power supply

12Vac/Vdc (-15/+10%), 50/60 Hz

  

12/24 Vac (-15/+10%), 50/60 Hz

 

230 Vac (-15/+10%), 50/60 Hz

 

115/230 Vac (-15/+10%), 50/60 Hz



Power consumption 4 VA 3 VA 4 VA 4 VA 3 VA 4 VA 4 VA 4 VA 4 VA 4 VA 6 VA 3 VA

Precision

Standard Carel NTC: -50T50°C

-50T90°C

1°C

3°C High temperature NTC: -20T115°C 1.5°C (outside this range 4°C) Standard Carel PTC: -50T50°C

-50T150°C

2°C

4°C Control / defrost / product probe

Standard Carel NTC (10 kΩ at 25°C), -50T90°C



High temp. NTC (50 kΩ at 25°C), -40T150°C



PTC (985 kΩ at 0°C), -50T150°C Only on IR33*7* models

User interface

display 3 digit LED plus icons Keypad ergonomic 4-button

Outputs

compressor 8 A, 16 A, 2 HP 16 A, 2 HP 16 A, 2 HP 8 A, 2 HP defrost 16 A, 8 A 8 A 8 A fan 8 A 5 A aux/light 8 A on model IR33S0EA* 5A on model IRYS0EP* 8 A

Programming

keypad



key



Special functions

HACCP/ Real Time Clock Function can be enabled when Real Time Clock option available, models: IR*(C,B,L,T,S,U,Y,Z)*

and on IR33 power models: IR*(E,F.0,W)*

Buzzer



repeater display standard for models with 12 Vac, 12/24 Vac, 115/230 Vac power supply. Important: models

with 230 Vac or 115 Vac power supply (internal transformer) do not support the repeater display

decimal point



Carel network serial interface



Other

Quality and precision: in-circuit testing



UL marking



VDE marking



EN 13485 (thermometer standard)



Note: = standard Relay rating to EN60730-1: 8 A, 8(4)A 16 A, 12(2) A 2 HP, 10(10) A (*) up to 60°C ambient temperature

Tab. 9.c

9.4 ir33+ power part numbers

Features IREV0EHA0 IREVY0EHA0 IREVF0EHA0 IREVF0EFA0

Power supply 230 Vac

Outputs

compressor 2 HP, 12(10)A defrost 8 A 8 A 8 A evaporator fans 5 A 5 A

Inputs

room temperature



defrost temperature



digital input/probe 3



Pluses

HACCP



programming key



high e ciency display



buzzer



real time clock



RS485 option



Relay rating to EN60703-1: 8 A, 8(4) A; 16 A, 12(2) A; 2 HP, 10(10) A

Tab. 9.d

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

9.5 ir33+ wide part numbers

Features PBEVY0EVLG PBEVC0HNLG PBEVH0HNHG PBEVH0HNHW PBEVC0SNNG PBEVC0SNNW

Power supply

230 Vac, (-15/+10%), 50/60 Hz



115/230 Vac, (-15/+10%), 50/60 Hz



 (small)  (small)

Precision

Standard Carel NTC: -50T50°C

-50T90°C

1°C 3°C

High temperature NTC -40T-20°C

-50T115°C 115T150°C

4°C

1.5 °C 4° C

Standard Carel PTC -50T50°C (only on IREV*7* models) 50T150°C

2°C

4°C User interface (display (3 digit LED plus icons)) green white green white Keypad ergonomic 8-button

Outputs

compressor 16 A 2 HP 2 HP 2 HP 30 A 30 A defrost 8 A 16 A 16 A 16 A 8 A 8 A evaporator fan 8 A 8 A 8 A 5 A 5 A aux1 8 A 8 A 8 A 8 A 5 A 5 A aux2 8 A 8 A

Programming

keypad and key



Special functions

HACCP/ Real Time Clock Function can be enabled when Real Time Clock available (models: PBEV*(C, L, S, Y)*) buzzer



repeater display



For models with 12 Vac, 12/24 Vac, 115/230 Vac power supply. The models with internal transformer (115 Vac or 230 Vac) do not support the repeater display

decimal point



CAREL serial network interface



Note: = standard

Tab. 9.e

9.6 easy wide part numbers

Features

PBEVS0EAAA

PBEVY0EVD0

PBEVC0HND0

PBEVC0HNBA

PBEVC0HCAA

PBEVH0HNAA

PBEVH0HNB0

PBEVH0HNBW

PBEVS0SAFA

PBEVC0SNFA

PBEVC0SNFW

Power supply

230 Vac (-15/+10%), 50/60 Hz



115/230 Vac (-15/+10%), 50/60 Hz



small small small

Precision

Standard Carel NTC: -50T50°C

-50T90°C

1°C 3°C

High temperature NTC -40T-20

-20T115°C 115T150 °C

4°C

1.5 °C 4°C

Standard Carel PTC -50T50°C (only on PBEV*7* models): -50T150°C

2°C 4°C

User interface

Display (3 digit LED plus icons) blue red red blue blue blue red white blue blue white Keypad ergonomic 4-button Outputs compressor 8 A 16 A 2 HP 2 HP 2 HP 2 HP 2 HP 2 HP 30 A 30 A 30 A defrost 8 A 16 A 16 A 16 A 16 A 16 A 16 A 8 A 8 A evaporator fan 8 A 8 A 8 A 8 A 8 A 8 A 5 A 5 A aux1 8 A 8 A 8 A 8 A 8 A 8 A 8 A 8 A 8 A 5 A 5 A aux2 8 A 8 A 8 A

Programming

keypad



key



Special functions

HACCP/ Real Time Clock Function can be enabled when Real Time Clock available

Models: PBEV*(C,L,S,Y)*

buzzer



repeater display standard for models with 12 Vac, 12/24 Vac, 115/230 Vac power supply. The models with inter-

nal transformer (115 Vac or 230 Vac) do not support the repeater display

decimal point



Carel network serial interface



Note:  = standard

Tab. 9.f

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

10. APPENDIX 1: VPM VISUAL PARAMETER MANAGER

10.1 Installation

Go to http://ksa.carel.com and select the following path: Software & Support  Con guration & Updating Softwares  Parametric

controller software

then select Visual Parametric Manager.

A dialogue box is opened, with the possibility to download 3  les:

1. VPM_CD.zip: for burning a CD/DVD;

2. Upgrade setup;

3. Full setup: this is the complete program.

For  rst installations, select Full setup, for upgrades select Upgrade setup. The program is installed automatically by running setup.exe.

Important: if deciding to run the complete installation (Full setup),

uninstall any previous versions of VPM.

10.2 Opening the program

Programming can be performed using the key (IROPZKEYA0), connected to the computer via the converter (IROPZPRG00). When opening the VPM program, choose the device to be con gured: ir33. The Home page is displayed, with the options to create a new project or open an existing project. Choose new project and enter the password, which can be set as desired by the user the  rst time. Select the OEM pro le.

Fig. 10.a

Then:

1. upload the control parameters to the key, as described in chapter 2;

2. read the parameters from the key.

10.3 Computer - key connection

To connect the computer to the key:

• Select the list of parameters on the E2PROM key as the source;

Fig. 10.b

• Select the key connection port using the guided procedure (Wizard);

Fig. 10.c

• Connect the programming key to the converter..

10.4 Programming

Go to the “Con gure device” page and select “Read”

Fig. 10.d

Fig. 10.e

A progress bar is displayed. When reading the data, the LEDs on the converter  ash, and at the bottom right the message “ONLINE” is displayed.

Fig. 10.f

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

At the end, the list of parameters read is displayed.

Fig. 10.g

10.5 Modify a parameter

Move the cursor to the “Written” column and double click the cell: enter the new value.

Fig. 10.h

10.6 Add a set of parameters

Up to 6 set of parameters can be added to Set0: Set0, Set1, Set2, Set3, Set4, Set5, Set6. To do this:

• move the cursor to Set0 and click the right button; choose “Add set” for

each additional set;

Fig. 10.i

• Set1 is displayed

Fig. 10.j

Note:

• on the controller, Set0, Set1, …, Set6 are named bn0 to bn6 respectively;

• Set0 is the default set on the controller, i.e. the default con guration.

When loading a di erent set (Set1...Set6), Set0 is overwritten with the new set and is consequently erased.

10.7 Write parameters

To write the parameters to the controller:

• Write the parameters to the key by selecting “Write”;

Fig. 10.k

• Transfer the parameters from the key to the controller using the

“Download” function, as described in the chapter on “Installation”.

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

11. APPENDIX 2: ADVANCED FUNCTIONS

11.1 Skip defrost

This algorithm is used to determine whether the shorter duration of a defrost allows subsequent defrosts to be skipped. To enable the function, set d12 = 2 or 3.

Par. Description Def Min Max UOM

d12 Advanced defrosts

d12 Skip defrost Automatic variation of dI 0 Disabled Disabled 1 Disabled Enabled 2 Enabled Disabled 3 Enabled Enabled

00 3 -

dn Nominal defrost duration 65 1 100 % dH Proportional factor for variation of dI 50 0 100 dP1 Maximum defrost duration 30 1 250 min/s dP2 Maximum aux evaporator defrost duration 30 1 250 min/s

Tab. 11.a

The nominal defrost times on evaporator 1 and evaporator 2 (auxiliary evaporator) are determined based on parameter dn and the parameters that set the maximum defrost duration for evaporators 1 and 2, according to the following formulae:

dn1 =

100

dP1

dn2 =

100

dP2

The algorithm keeps a counter of the defrosts to be skipped:

• if the defrost ends after a time less than dn1, the counter of defrosts to

be skipped is increased by 1;

• if the defrost ends normally, the next defrost is performed;

• when the counter reaches a total of 3, 3 defrosts are skipped and then

the counter returns to 1;

• when powering on the controller, 7 defrosts are completed without

increasing the value, after which the counter is enabled (starting from the eighth defrost).

Note: if there are two evaporators, the defrost duration used to determine the defrosts to be skipped is the longer nominal defrost duration.

Possible operating sequence (for example, if d12 = 2):

Start count Skip count Current count Defrost Outcome

7 0 0 Performed Not tested 6 0 0 Performed Not tested 5 0 0 Performed Not tested 4 0 0 Performed Not tested 3 0 0 Performed Not tested 2 0 0 Performed Not tested 1 0 0 Performed Not tested 0 0 0 Performed > “dn” 0 0 0 Performed > “dn” 0 0 0 Performed > “dn” 0 0 0 Performed > “dn” 0 0 0 Performed < “dn” 0 1 1 Skipped 0 1 0 Defrost > “dn” 0 0 0 Performed > “dn” 0 0 0 Performed > “dn” 0 0 0 Performed < “dn” 0 1 1 Skipped 0 1 0 Defrost < “dn” 0 2 2 Skipped 0 2 1 Skipped 0 2 0 Defrost > “dn” 0 0 0 Performed > “dn” 0 0 0 Performed > “dn” 0 0 0 Performed > “dn” 0 0 0 Performed < “dn” 0 1 1 Skipped 0 1 0 Defrost < “dn” 0 2 2 Skipped 0 2 1 Skipped 0 2 0 Defrost < “dn” …

Tab. 11.b

11.2 Variation of the defrost interval

This algorithm is used to adjust the defrost interval based on the duration of the previous defrost. To enable this, set d12 = 1 or 3.

The nominal defrost times on evaporator 1 and evaporator 2 are determined based on parameter dn and the parameters that set the maximum defrost duration for evaporators 1 and 2, according to the following formulae:

dn1 =

100

dP1

dn2 =

100

dP2

With running the defrost, depending on the duration “dE”, the defrost interval “dI” is adjusted by the value “dI”, calculated using the algorithm.

If there are two evaporators, the defrost duration considered is the longer nominal defrost duration.

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

11.3 Defrost with 2 evaporators

Up to 3 defrost probes and up to 2 evaporator outputs can be con gured. The controller recognises the basic con guration shown in the table below (probe 1 is the control probe and cannot be con gured).

DEFROST PROBE AND EVAPORATOR OUTPUT CONFIGURATION

Case Defrost probes Evaporator

outputs

Notes

1 Probe 2 Evap. 1 Probe 2 acts on evap. 1 2 Probe 2 Evap. 1

and 2

Probe 2 acts on evap. 1 and 2

3 Probe 2 Evap. 1 Probes 2 and 3 act on evap. 1 (start

and end defrost refer to the probe with the lower value)

Probe 3

4 Probe 2 Evap. 1 Probes 2, 3, 4 act on evap. 1 (start and

end defrost refer to the probe with the lower value)

Probe 3 Probe 4

5 Probe 2 Evap. 1 Probe 1 acts on evap. 1

Probe 3 Evap. 2 Probe 2 acts on evap. 2

6 Probe 2Probe 4 Evap. 1 Probe 2 and 4 act on evap. 1 (end de-

frost if all probes > end defrost threshold.)

Probe 3Probe 4 Evap. 2 Probe 3 and 4 act on evap. 2 (end de-

frost if all probes > end defrost threshold.)

Tab. 11.c

Case 6 refers to the con guration with 1 probe on each evaporator and 1 probe in common.

CASE 6: probe 2, probe 4 on evaporator 1, probe 3, probe 4 on evaporator 2.

CMP

ir33+

Fig. 11.a

Key

E1/2 Evaporator 1/2 S2/3/4 Defrost probe 2, 3, 4 C Condenser CMP Compressor V1/2 Electronic expansion valve 1/2 F Filter-drier L Liquid receiver S Liquid gauge V1/2 Thermostatic expansion valve 1/2

The following situations may occur if the outputs are not con gured or there are probe alarms.

DEFROST BY TEMPERATURE

Defrost probe / evap. output con g.

Situation E ect

Probe 2 defrost output 1 No probe Defrost ends by timeout

(dP1) Probe available, probe error

Defrost ends by timeout

(dP1)

Probe 3 defrost output 2

No probe AUX1 con gured Defrost ends by timeout

(dP1) AUX2 con gured Defrost ends by timeout

(dP2) AUX1 and AUX2 not con gured

Not performed

Probe available, probe error

Defrost ends by timeout

(dP2) Probe available and AUX1 and AUX2 not con gured

Defrost performed on

defrost output

Probe 4 together with probe 2 and probe 3defrost output 1 and defrost output 2

No probe, not managed Cases 4, 6 not reco-

gnised Probe available, probe error

Defrost ends by timeout

Tab. 11.d

DEFROST BY TIME

Defrost probe / evap. output con g.

Situation E ect

Defrost output 1 AUX1 con gured Defrost ends by timeout (dP1)

AUX2 con gured Defrost ends by timeout (dP2) AUX1 and AUX2 not con gured

Defrost not performed

Tab. 11.e

Note: AUX1 and AUX 2 con gured as evaporator outputs are not

equivalent..

11.4 Second compressor with rotation

Second compressor output with two step control and rotation. The role of main and secondary compressor are alternated whenever the compressor stops, so that when next called to start (or stop), the output not involved in the previous start (stop) will be activated (deactivated).

Par. Description Def Min Max UoM H1/H5 AUX/AUX2 output con guration

0 = normally energised alarm … 13 = second compressor step with rotation

1/3 0 13 -

Tab. 11.f

OFF

CP1

CP2

OFF

St+rd

St+rd/2

Fig. 11.b

ENG

ir33plus +0300028EN rel. 1.1 - 05.05.2017

CP1

OFF

rd/2 rd/2

CP2

OFF

Fig. 11.c

Key

Sv Virtual probe CP2 Compressor 2 CP1 Compressor 1 rd Di erential t time St Set point

Examples of operation:

OFF

REQ2

CP1

CP2

REQ1

OFF

EXAMPLE 1

Fig. 11.d

OFF

REQ2

CP1

CP2

REQ1

OFF

EXAMPLE 2

Fig. 11.e

OFF

REQ2

CP1

CP2

REQ1

OFF

EXAMPLE 3

Fig. 11.f

OFF

REQ2

CP1

CP2

REQ1

OFF

EXAMPLE 4

Fig. 11.g

Key

REQ1 compressor 1 call CP1 compressor 1 REQ2 compressor 2 call CP2 compressor 2 t time

CAREL INDUSTRIES - Headquarters

Via dell’Industria, 11 - 35020 Brugine - Padova (Italy) Tel. (+39) 049.9716611 - Fax (+39) 049.9716600 e-mail: carel@carel.com - www.carel.com

Agenzia / Agency:

ir33plus +0300028EN rel. 1.1 - 05.05.2017

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