EVCO EVX225N7 - Manual (Page 3)

EVCO S.p.A. • Code 104X225E104 • page 3/5
• if parameter u11 is set to 6, the condenser fan will oper-
ate in parallel with the condenser
When the problem that caused the alarm disappears, the instrument
returns to normal operation.
10
TECHNICAL DATA
10.1 Technical data
Case: open frame board.
Frontal protection degree: IP 00.
Connections: 6.3 mm faston connectors (0.248 in, power and
outputs), screw terminal board (inputs), 6-poles connector (serial port).
Operating temperature: from 0 to 55 °C (from 32 to 131 °F, 10 ...
90% relative humidity without condensaton).
Power supply: 230 VCA, 50/60 Hz or 115 VCA, 50/60 Hz.
Alarm buzzers: incorporated.
Measure inputs: 3 (room 1 probe, room 2 probe and condenser
probe) for NTC probe.
Digital inputs: 2 (high pressure switch and low pressure switch) for
normally open/normally closed contact (free contact, 5 V 1 mA).
Measurement field: from -40 to 105 °C (from -40 to 220 °F).
Resolution: 0.1 °C/1 °C/1 °F.
Digital outputs:
5 relays:
• compressor relay: 30 A res. @ 250
VCA (normally open contact)
• evaporator fan relay: 8 A res. @ 250
VCA (exchange contact)
• room 1 valve relay: 8 A res. @ 250
VCA (normally open contact)
• room 2 valve relay: from 8 A res. @
250 VCA (normally open contact)
• fifth output relay: from 5 A res. @
250 VCA (normally open contact).
The maximum load current allowed is 16 A.
Serial port: port for communicating with the programming key, the
set-up software system or the supervision system (through a serial in-
terface, via TTL, with a MODBUS communications protocol).
11 WORKING SETPOINT AND CONFIGURATION PARAMETERS
11.1 Working setpoint
MIN. MAX. U.M. DEFAULT
r1 r2 °C/°F (1) 10.0
r7 r8 °C/°F (1) 2.0
11.2 Configuration parameters
PAR.
MIN. MAX. U.M. DEFAULT
SP1 r1 r2 °C/°F (1) 10.0
SP2 r7 r8 °C/°F (1) 2.0
PAR. MIN. MAX. U.M. DEFAULT
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
P1 0 1 - - - - 1
P2 0 1 - - - - 0
P4 0 1 - - - - 1
P5 0 1 - - - - 0
P8 0 250 ds 5
PAR. MIN. MAX. U.M. DEFAULT
r0 0.1 15.0 °C/°F (1) 4.0
r1 -99.0 r2 °C/°F (1) -50.0
r2 r1 99.0 °C/°F (1) 50.0
r3 0 1 - - - - 0
r6 0.1 15.0 °C/°F (1) 4.0
r7 -99.0 r8 °C/°F (1) -50.0
r8 r7 99.0 °C/°F (1) 50.0
r9 0 1 - - - - 0
PAR. MIN. MAX. U.M. DEFAULT
C0 0 240 min 0
C1 0 240 min 5
C2 0 240 min 3
C3 0 240 sec 0
C4 0 240 min 10
C5 0 240 min 10
C6 0.0 199.0 °C/°F (1) 80.0
C7 0.0 199.0 °C/°F (1) 90.0
C8 0 15 min 1
C10 0 9.999 hr 0
PAR. MIN. MAX. U.M. DEFAULT
d0 0 99 hr 4
d3 0 99 min 20
d4 0 1 - - - - 0
d5 0 99 min 0
d6 0 1 - - - - 1
d7 0 15 min 2
d8 0 1 - - - - 0
PAR. MIN. MAX. U.M. DEFAULT
A1 -99.0 99.0 °C/°F (1) -10.0
A2 0 2 - - - - 1
A4 -99.0 99.0 °C/°F (1) 10.0
A5 0 2 - - - - 1
A6 0 240 min 120
WORKING SETPOINT
first working setpoint (room 1); see also r0
second working setpoint (room 2); see also r6
WORKING SETPOINT
first working setpoint (room 1); see also r0
second working setpoint (room 2); see also r6
MEASUREMENT INPUTS
offset room 1 probe
offset room 2 probe
offset condenser probe
Celsius degree decimal point (for size displayed during normal operation)
1 = YES
temperature unit of measurement (2)
0 = °C
1 = °F
enabling of condenser probe
1 = YES
temperature shown during the normal operation
0 = room 1 temperature
1 = room 2 temperature
delay in display of variations in temperature detected by the probes
MAIN REGULATOR
first working setpoint differential (room 1)
minimum first working setpoint (room 1)
maximum first working setpoint (room 1)
locking of first working setpoint calibration (using the procedure described in paragraph 5.1)
1 = YES
second working setpoint differential (room 2)
minimum second working setpoint (room 2)
maximum second working setpoint (room 2)
locking of second working setpoint calibration (using the procedure described in paragraph 5.2)
1 = YES
COMPRESSROR PROTECTION SYSTEM
delay in switching on of compressor after the insturment switches on (3)
minimum time between two consecutive compressor start-ups; also delay in compressor start-up after conclusion of room 1 (or room 2) probe error
(code “Pr1”) (4) (5)
minimum duration of compressor switch off time (4)
minimum duration of compressor switch on time
duration of room 1 valve (and room 2 valve) switch off during room 1 (or room 2) probe error (code “Pr1”); see also C5
duration of room 1 valve (and room 2 valve) switch on during room 1 (or room 2) probe error (code “Pr1”); see also C4
condenser temperature is higher than that at which the condenser overheating alarm is activated (code “COH”) (6)
condenser temperature is higher than the limit at which the compressor blocked alarm is activated (code “CSd”)
compressor alarm delay locked (code “CSd”) (7)
number of operating hours is higher than the limit at which the need for maintenance is signaled.
0 = function absent
DEFROSTING (it has effect on both the rooms and at the same time)
defrost interval (8)
0 = interval defrosting will never be activated
defrosting duration
0 = defrosting will not be activated
defrosting when instrument is switched on (3)
1 = YES
if d4 = 0, minimum time between switching on of instrument and activation of defrosting (3)
if d4 = 1, delay in activation of defrosting after instrument is switched on (3)
temperature displayed during defrosting
0 = room 1 (or room 2) temperature
1 = if at the time of defrosting activation, the room 1 (or room 2) temperature is lower than the “first working setpoint + r0” (or “second working
setpoint + r6)”, at most “first working setpoint + r0” (or “second working setpoint + r6”); if at the time of defrosting activation, the room 1 (or room
2) temperature is higher than the “first working setpoint + r0” (or “second working setpoint + r6”), at most the room 1 (or room 2) temperature
when defrosting is activated (9)
dripping duration (during dripping the compressor will remain switched off)
defrosting activation methods
0 = AT INTERVALS - defrosting will be activated once the instrument has altogether been running for time d0
1 = AT INTERVALS - defrosting will be activated once the compressor has altogether been switched on for time d0
TEMPERATURE ALARMS
temperature below that at which the first minimum temperature alarm is activated (room 1, code “AL1”); see also A2 and A19
type of minimum first temperature alarm (code “AL1”)
0 = alarm absent
1 = relative to working setpoint (that is “first working setpoint - A1”; consider A1 without sign)
2 = absolute (that is A1)
temperature higher than that at which the first maximum temperature alarm is activated (room 1, code “AH1”); see also A5 and A19
type of maximum first temperature alarm (code “AH1”)
0 = alarm absent
1 = relative to working setpoint (that is “first working setpoint + A4”; consider A4 without sign))
2 = absolute (that is A4)
delay in first maximum temperature alarm (room 1, code “AH1”) after the instrument is switched on (3)