Bulletin 100-50-6.3 –
Page 3
4 SIGNALS
4.1 Signals
LED EXPLANATION
LED compressor
if lit, the compressor will be turned on
if it flashes:
• the modification of the working setpoint will be running
• a compressor protection will be running
(parameters C0, C1, C2 and i7)
LED defrost
if lit, the defrost will be running
LED alarm
if lit, an alarm will be running
°C LED Celsius degree
if lit, the unit of measure of the temperatures will be degrees
Celsius (parameter P2)
°F LED Fahrenheit degree
if lit, the unit of measure of the temperatures will be degrees
Fahrenheit (parameter P2)
CODE EXPLANATION
Loc the keyboard and/or the working setpoint are locked
(parameter r3); also look at paragraph 2.6
- - - - no data available (for example because the probe is not enabled)
5 ALARMS
5.1 Alarms
CODE EXPLANATION
AL Low temperature alarm
AH High temperature alarm
id Door switch input alarm (only if parameter P4 has value 3
and parameter i0 has value 3)
iA Multipurpose input alarm (only if parameter P4 has value 3
and parameter i0 has value 0)
iSd Controller locked alarm (only if parameter P4 has value 3 and
parameter i0 has value 0)
COH Overheated condenser alarm (only if parameter P4 has value 2)
CSd Compressor locked alarm (only if parameter P4 has value 2)
When the cause of the alarm disappears, the controller restores to
normal operation, except for the controller locked alarm (code “
iSd”)
and the compressor locked alarm (code “
CSd”). These alarms can
only be reset by switching the power supply to the controller off/on.
8 WORKING SETPOINTS and CONFIGURATION PARAMETERS
8.1 Working setpoints
8.2 Configuration parameters
Minimum
Maximum U.M.
dEF.
Working Setpoints
r1
r2
°C/°F
0.0
working setpoints
Parameters
Minimum
Maximum U.M.
dEF.
Working Setpoints
SP
r1
r2
°C/°F
0.0
working setpoints
Parameters
Minimum
Maximum U.M.
dEF.
Temperature Inputs
CA1
-25.0
25.0
°C/°F
0.0
cabinet probe offset
CA3
-25.0
25.0
°C/°F
0.0
auxiliary probe offset (only if P4 = 1 or 2)
P0
0
1
—
1
kind of probe
0 = PTC
1 = NTC
P1
0
1
—
1
display decimal point value during normal operation (Celsius mode only)
1 = YES
6 INTERNAL DIAGNOSTICS
6.1 Internal diagnostics
CODE EXPLANATION
Pr1 Cabinet probe error
Pr3 Auxiliary probe error (only if parameter P4 has value 1 or 2)
When the cause of the alarm disappears, the controller restores to
normal operation.
7 TECHNICAL DATA
7.1 Technical data
Frontal bezel protection: IP 65.
Connections (use copper conductors only): extractable terminal
blocks (power supply, inputs and output), 6 pole connector (serial
port).
Working temperature: from 0 to 55°C (32 to 131°F, 10 to 90% of
relative humidity without condensate).
Power supply: 115 VAC/230 VAC, 50/60 Hz, 3 VA (approximate).
Insulation class: 2.
Alarm buzzer
Measure inputs: 1 (cabinet probe) for PTC/NTC probes.
Digital inputs: 1 (multipurpose/door switch) for NO/NC contact
(free of voltage, 5 V 1 mA) also configurable for measure input
(evaporator or condenser probe, for PTC/NTC probes).
Working range: from -50.0 to 150.0°C (-50 to 300°F) for PTC probe,
from -40.0 to 105.0°C (-40 to 220°F) for NTC probe.
Resolution: 0.1°C/1°C/1°F.
Digital outputs PSK221:
1 relay:
• compressor relay: 16 res. A @ 250 VAC,
5 FLA, 30 LRA (change-over contact).
Digital outputs PSK231:
1 relay:
• compressor relay: 30 res. A @ 250 VAC,
12 FLA, 72 LRA
(NO contact).
The maximum current allowed on the load is 10 A.
Serial port: port for communication with a management system
(through a serial interface, via TTL, with MODBUS communication
protocol) or with the programming key.
