KIOUR REF-FR Series Manual Download Page 1

KIOUR

          

Type REF-FR       Model REF-FR-SM        V2.0

 

                                      

 

Electronic digital refrigerator controller (Compact) with ON-OFF function, level water 
control, dfrost control (valve or resistance), fan, ON-OFF relay and buzzer ALARM.  

Range -45 -+150 °C/°F.

 

  Electronic  controller 

REF-FR 

is a compact unit for refrigerator’s control. It is ideal for 

ventilated refrigerator rooms of low temperatures with dfrost control.

 

It is provided with 5 

relays: compressor (30 A, 2HP), fan (5A), valve or resistance (12A), level control (5A), ON-
OFF relay and a buzzer ALARM.  
   It controls two temperatures with its two sensors in range of -45 - +150 °C/°F, while it has 
an 

Off state, 

in which

 

all relays are off and 

OFF 

is displayed. Also it is provided with one input 

for level control (Patent No.1004976) and one input for open door. If the door opens the fan 
stops. After four minutes the compressor also stops and the ALARM of the open door is 
displayed, while the buzzer is ON. 

 

MANAGING THE UNIT 

 

By pressing 

 

the parameter’s menu is displayed.

 

df

 

:

 By pressing 

df

 for five minutes, a dfrost cycle is forced.

 

T2

 

:

 By pressing 

Τ

2

,

 

the temperature of the evaporator is displayed. 

 

RESET 

 

By pressing 

 

for 1 sec, the setup °C or °F is displayed.

 

:

 By pressing

 RESET

, the display of the ALARM and the buzzer stops. 

:

 By pressing 

 

for 3 sec, the state changes from 

OFF to ON

 or from 

ON to OFF

MANAGING THE PARAMETERS

 

1. 

By pressing 

, the first parameter SPo (Set Point) is displayed and with the arrow buttons we can see the other parameters 

as they appear in the table below. 

2. 

By pressing 

SET

, we can see the value of the parameter and with the arrow buttons we can change the value. We confirm 

the new value with the enter (

↵),

 while the name of the parameter is displayed. If we press 

SET

, we cancel the new value and 

the name of the parameter is displayed. 

3.

 To exit the parameters, we press 

NOTE: For security reasons, we can’t see all the parameters. To access them all, we enter the value 22 to the Cod parameter. 

OPTICAL SIGNS - ALARMS 
ALo 
AHi 
LF1 

Low temperature of room 

:

 High temperature of room 

Malfunction of the room’s sensor 

LF2   
dor  

 

:

 Malfunction of the evaporator’s sensor

 

Open door. If the door remains open for 4 minutes, the 

compressor stops, an ALARM is displayed and the buzzer is ON. 

SERIAL INPUT 

Via serial input the instrument is connected to the memory backup (key) or to a network. 
1.  

Memory backup (key): 

With the key we save the setup of the parameters. We connect the key to the instrument and: 

    a. By pressing SET and the UP button, the instrument connects to the key and the message 

Eo

 is displayed. 

    b. By pressing UP button, the instrument reads the parameters from the key and the message 

ro = read O.K. 

or 

rF = read     

        Fail 

is displayed. 

    b. By pressing DOWN button the instrument writes the parameters to the key and the messages 

Yo = Write o.K.

 or 

YF =  

        Write Fail 

is displayed

.

 The key can be connected to various types of instruments. If you try to read the parameters of a  

        different instrument, a message 

rF = read Fail

 is displayed. 

    At all instruments and at any time we can perform the write operation. After 10 sec, the key is disconnected automatically. 

2.

 

Connect to network:

 The device can be connected to the 

CAMIN

 net (RS485 Modbus protocol) though an interface, 

NET-IN-1

CAMIN

 is an application designed to collect information, watch and fully control a net of devices. The maximum length of the 

net can be 1000 meters. 

 

TECHNICAL SPECIFICATIONS 

 

Power supply: 12 VAC/DC  

 

Accuracy: 0.5 % ±1 digit  

 

Connection: TAB 6,3 mm (DIN46247) 

 

Relay 250 VAC 30 A Resistive Load 2 HP 

 

Relay 250 VAC 12 A  Resistive Load

 

 

Two relay 250 VAC 5 A Resistive Load

 

 

Operating temperature: -10 - 60°C 

 

Storage temperature: -20 - +80°C 

 

Mounted through panel hole  

 

Security power supply: 0,5 A 

 

Maximum power consumption: 3 Watt 

 

Connection for two sensors 

ATTENTION

: It is necessary to prevent electrostatic discharges at the ventilation openings. Also prevent insertion of pointed 

elements.  

CONNECTION DIAGRAMS - DIMENSIONS 

 

                    

                                                                

 

 

28

mm

76 mm

 

 

 

 

 

                                                                                             

 

                                                                                  
 
 
 
 
 
 
 

28

mm

70 mm

2

1

3

4

5

6

7

8

9 10 11 12 13

POWER

SUPPL

12

15%

Y

V AC/

±

DC

KIOUR

REFRIGERATOR CONTROLLER   Type REF-FR
Model REF-FR-SM.  Range -50 - +150  C/ F  

 

o

V2.0

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V

VA

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5A

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A

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MA

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Patent No.
1004976

Co

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12

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KIOUR

o

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REF-FR

ALARM

RESET

T2

dF

PTC

dFros

PTC

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WA

T

E

R

LEV

E

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INP

U

T

DO

O

R

t Ro m

   

  

S

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IA

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SET

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