EVCO EVK204N9 - Manual (Page 3)

Evco S.p.A. • Code 104K204E05 • page 3/5
8 INTERNAL DIAGNOSTICS
8.1 Internal Diagnostics
CODE MEANING
Pr1 Cabinet probe error
Remedies:
• see parameter P0
• check probe integrity
• check probe-device connection
• check the cabinet temperature
Main consequences:
• the activity of the compressor will depend on param-
eters C4 and C5
• defrosting will never be activated
• if parameter u1 is set to 4, the alarm output will be acti-
vated
• if parameter u1 is set to 5 or 6, the fourth output will be
deactivated
Pr2 Evaporator probe error
Remedies:
• the same as for the previous case, but in relation to the
evaporator probe
Main consequences:
• if parameter P3 is set to 1, defrosting will last for the du-
ration established by parameter d3
• if parameter P3 is set to 1 and parameter d8 is set to 2, the
device will operate as though parameter d8 was set to 0
• if parameter F0 is set to 3 or 4, the device will operate as
though the parameter was set to 2
• if parameter u1 is set to 4, the alarm output will be acti-
vated
Pr3 Auxiliary probe error (only if parameter P4 is set to 1 or 2)
Remedies:
• the same as for the previous case, but in relation to the
auxiliary probe
Main consequences:
• if parameter u1 is set to 4, the alarm output will be acti-
vated
When the cause of the alarm is resolved, the device restores normal
operation.
PT • 47/10
9 TECHNICAL DATA
9.1 Technical data
Case: grey self-extinguishing.
Front panel protection classification: IP 65.
Connections (use copper conductors only): screw terminal
blocks (power supply, inputs and outputs), 6 pin connector (serial
port; by request), 4 pin connector (to remote indicator; by request);
spring extractable terminal blocks (power supply, inputs and outputs)
Operating temperature: from 0 to 55ºC (from 32 to 131ºF, 10 ...
90% relative humidity, without condensation).
Power supply: 12 VAC/DC (or 12-24 VAC/DC), 50/60 Hz, 3.5 VA
(approximate) or 115 ... 230 VAC, 50/60 Hz, 5 VA (approximate).
If the instrument is supplied at 115 ... 230 VAC, protect the power
supply with a fuse rated 250 V, 1.25 A, 6.7 I2t.
Insulation class: 2.
Alarm buzzer: available by request.
Sensor inputs: 2 (cabinet probe and evaporator probe) for PTC/
NTC probes.
Digital inputs: 1 (microport) for NA/NC contact (clean contact, 5 V,
1 mA); fourth input can be configured as sensor input (display probe
or condenser probe, for PTC/NTC probes) or digital input
(multifunction, clean contact, 5 V, 1 mA).
Sensor range: from -50.0 to 150.0ºC (from -50 to 300ºF) for PTC
probes, from -40.0 to 105.0ºC (from -40 to 220ºF) for NTC probes.
Sensitivity: 0.1ºC/1ºC/1ºF.
Digital outputs: 4 relays:
• compressor relay: 16 A res. @ 250 VAC,
5 FLA, 30 LRA (exchange contacts)
• defrost relay: 8 A res. @ 250 VAC, 2 FLA,
12 LRA (exchange contacts)
• evaporator fan relay: 8 A res. @ 250 VAC,
2 FLA, 12 LRA (NA contacts)
• fourth output: 8 A res. @ 250 VAC, 2 FLA,
12 LRA (exchange contacts).
The maximum permitted current on loads is 10 A.
Serial port: port for communicating with the monitoring system (by
means of a serial interface, via TTL, using the MODBUS communica-
tion protocol) or with the programming key; by request.
10 OPERATIONAL SETPOINT AND CONFIGURATION PARAMETERSE
10.1 Operational setpoint
MIN. MAX. U.O.M. DEF.
r1 r2 °C/°F (1) 0,0
10.2 Configuration paramaters
PARAM. MIN.
MAX. U.O.M. DEF.
SP r1 r2 °C/°F (1) 0,0
PARAM. MIN. MAX. U.O.M. DEF.
CA1 -25,0 25,0 °C/°F (1) 0,0
CA2 -25,0 25,0 °C/°F (1) 0,0
CA3 -25,0 25,0 °C/°F (1) 0,0
P0 0 1 - - - - 1
P1 0 1 - - - - 1
P2 0 1 - - - - 0
P3 0 2 - - - - 1
P4 0 3 - - - - 3
P5 0 4 - - - - 0
P6 0 4 - - - - 0
PARAM. MIN. MAX. U.O.M. DEF.
r0 0,1 15,0 °C/°F (1) 2,0
r1 -99,0 r2 °C/°F (1) -50,0
r2 r1 99,0 °C/°F (1) 50,0
r3 0 1 - - - - 0
r4 0,0 99,0 °C/°F (1) 0,0
PARAM. MIN. MAX. U.O.M. DEF.
C0 0 240 min 0
C1 0 240 min 5
C2 0 240 min 3
C3 0 240 s 0
C4 0 240 min 10
OPERATIONAL SETPOINT
operational setpoint
OPERATIONAL SETPOINT
operational setpoint
INGRESSI DI MISURA
cabinet probe offset
evaporator probe offset
auxiliary probe offset (only if P4 = 1 or 2)
probe type
0 = PTC
1 = NTC
degree Celsius decimal point (for the quantity displayed during normal operation)
1 = YES
unit of temperature measurement (2)
0 = °C
1 = °F
evaporator probe function
0 = no probe
1 = defrosting probe and evaporator fan thermostat probe
2 = evaporator fan thermostat probe
fourth input function
0 = no probe
1 = sensor input (auxiliary probe, display probe)
2 = sensor input (auxiliary probe, condenser probe)
3 = digital input (multifunction input)
quantity displayed during normal operation
0 = cabinet temperature
1 = operational setpoint
2 = evaporator temperature
3 = "cabinet temperature - evaporator temperature"
4 = temperature detected by the auxiliary probe (only if P4 = 1 or 2)
quantity displayed by the remote indicator
0 = cabinet temperature
1 = operational setpoint
2 = evaporator temperature
3 = "cabinet temperature - evaporator temperature"
4 = temperature detected by the auxiliary probe (only if P4 = 1 or 2)
MAIN CONTROLLER
operational setpoint differential
minimum operational setpoint
maximum operational setpoint
block operational setpoint change (with the procedure indicated in paragraph 3.1)
1 = YES
temperature increase during Energy Saving function (only if P4 = 3 and i5 = 2 or 3)
COMPRESSOR PROTECTIONS (3)
compressor delay from device power on (4)
minimum time between two successive compressor operations; also compressor delay on resolution of cabinet probe error (5) (6)
minimum compressor shut-down time (5)
minimum compressor start-up time
duration of compressor shut-down during cabinet probe error; see also C5
Other communication ports: port for communicating with the
remote indicator; by request.