1592027600 XW90LT RTC GB r1.1 10.02.2012.doc
XW90LT
5/6
15.
ALARM SIGNALS
Message Cause
Outputs
P1
Room probe failure
Compressor output acc. to par. Con and CoF
P2
Evaporator probe failure
Defrost end is timed
P3
Third probe failure
Outputs unchanged
P4
Fourth probe failure
Outputs unchanged
HA
Maximum temperature alarm
Outputs unchanged.
LA
Minimum temperature alarm
Outputs unchanged.
HA2
Condenser high temperature
It depends on the AC2 parameter
LA2
Condenser low temperature
It depends on the bLL parameter
dA
Door open
Compressor and fans restarts
EA
External alarm
Output unchanged.
CA
Serious external alarm (i1F=bAL) All outputs OFF.
CA
Pressure switch alarm (i1F=PAL) All outputs OFF
rtC
Real time clock alarm
Alarm output ON; Other outputs unchanged;
Defrosts according to par. idF Set real time clock
has to be set.
rtF
Real time clock board failure
Alarm output ON; Other outputs unchanged;
Defrosts according to par. idF. Contact the
service.
15.1
SILENCING BUZZER / ALARM RELAY OUTPUT
-
tbA=Y: the buzzer and the relay are is silenced by pressing any key.
-
tbA=n: only the buzzer is silenced while the alarm relay is on until the alarm condition
recovers.
15.2
ALARM RECOVERY
Probe alarms P1, P2, P3 and P4 start some seconds after the fault in the related probe; they
automatically stop some seconds after the probe restarts normal operation. Check connections before
replacing the probe.
Temperature alarms HA, LA, HA2 and“LA2 automatically stop as soon as the temperature returns to
normal values.
Alarms EA and CA (with i1F=bAL) recover as soon as the digital input is disabled.
Alarm CA (with i1F=PAL) recovers only by switching off and on the instrument.
15.3
OTHER MESSAGES
on
Keyboard enabled after automatic lock.
LOC Keyboard automatically locked
Pon Keyboard unlocked.
PoF Keyboard locked
noP
In programming mode: none parameter is present in Pr1
On the display or in dP2, dP3, dP4: the selected probe is nor enabled
16.
TECHNICAL DATA
Housing: self extinguishing ABS
Case: facia 38x185 mm; depth 76mm
Mounting: panel mounting in a 150x31 mm panel cut-out with the 2 metal brackets supplied
Protection: IP20
Frontal protection: IP65
Connections: screw terminal block
2.5 mm
2
heat-resistant wiring and 6.3mm Faston
Power supply: 230Vac or. 110Vac or 24Vac
10%
Power absorption: 5VA max
Display: 3 digits, white LED, 14.2 mm high
Inputs: Up to 4 NTC or PTC probes
Digital inputs: 2 free voltage
Relay outputs: Total current on loads MAX. 20A
Compressor: relay SPST 20(8) A, 250Vac
Light: relay SPST 8 or 16(3) A, 250Vac
Fans: relay SPST 8(3) A, 250Vac
Defrost: relay SPST 8(3) A, 250Vac
Auxiliary: SPST relay 8(3) A, 250Vac
Alarm: SPST relay 8(3) A, 250Vac
Other output: buzzer
Serial output: TTL standard
Communication protocol: Modbus - RTU
Data storing: on the non-volatile memory (EEPROM)
Internal clock back-up: 24 hours (only for model with RTC)
Kind of action: 1B
Pollution degree: 2
Software class: A
Rated impulsive voltage: 2500V
Over voltage Category: II
Operating temperature: 0 to 60 °C (32 to 140°F)
Storage temperature: -30 to 85°C (-22 to 185°F).
Relative humidity: 20 to 85% (not condensing)
Measuring and regulation range:
NTC probe: -40 to 110°C (-40 to 230°F)
PTC probe: -50 to 150°C (-58 to 302°F)
Resolution: 0.1°C or 1°C or 1°F (selectable)
Accuracy (ambient temp. 25°C): ±0.7°C ±1 digit
17.
CONNECTIONS
Supply: 120Vac or 24Vac: connect to terminals 11-12
The X-REP output is optional
The light relay can be also 16(5)A according to the model
18.
DEFAULT SETTING VALUES
Label Name
Range
°C/°F
Level
Set Set point
LS to US
-5.0
- - -
rtC* Real time clock menu
-
-
Pr1
Hy Differential
[0.1 to 25.5°C]
[1 to 45°F]
2.0
Pr1
LS Minimum set point
[-55°C to SET]
[-67°F to SET]
-50.0
Pr2
US Maximum set point
[SET to 150°C]
[SET to 302°F]
110
Pr2
ot Thermostat probe calibration
[-12 to 12°C]
[-21 to 21°F]
0.0
Pr1
P2P Evaporator probe presence
n=not present; Y=present
Y
Pr1
oE Evaporator probe calibration
[-12 to 12°C]
[-21 to 21°F]
0.0
Pr2
P3P Third probe presence
n=not present; Y=present
n
Pr2
o3 Third probe calibration
[-12 to 12°C]
[-21 to 21°F]
0
Pr2
P4P Fourth probe presence
n=not present; Y=present
n
Pr2
o4 Fourth probe calibration
[-12 to 12°C]
[-21 to 21°F]
0
Pr2
odS Outputs delay at start up
0 to 255 min
0
Pr2
AC Anti-short cycle delay
0 to 50 min
1
Pr1
Ac1 Second compressor start delay
0 to 255 sec
5
Pr2
rtr P1-P2 percentage for regulation
0 to 100 (100=P1 , 0=P2)
100
Pr2
CCt Continuous cycle duration
0.0 to 24h00min
0.0
Pr2
CCS Set point for continuous cycle
[-55.0 to 150.0°C]
[-67 to 302°F]
-5
Pr2
Con Compressor ON time with faulty probe
0 to 255 min
15
Pr2
CoF Compressor OFF time with faulty probe
0 to 255 min
30
Pr2
CF Temperature measurement unit
°C to °F
°C
Pr2
rES Resolution
in=integer; dE= dec.point
dE
Pr1
Lod Probe displayed
P1; P2
P1
Pr2
rEd
2
X-REP display
P1; P2; P3; P4; SEt; dtr
P1
Pr2
dLy Display temperature delay
0.0 to 20min00sec (10 sec)
0.0
Pr2
dtr P1-P2 percentage for display
1 to 99
50
Pr2
EdF* Kind of interval for defrost
rtC; in
in
Pr2
tdF Defrost type
EL=el. heater; in= hot gas
EL
Pr1
dFP Probe selection for defrost termination
nP; P1; P2; P3; P4
P2
Pr2
dtE Defrost termination temperature
-50 to 50°C
8
Pr1
idF Interval between defrost cycles
1 to 120 hours
6
Pr1
MdF (Maximum) length for defrost
0 to 255 min
30
Pr1
dSd Start defrost delay
0 to 99min
0
Pr2
dFd Displaying during defrost
rt; it; SEt; DEF
it
Pr2
dAd MAX display delay after defrost
0 to 255 min
30
Pr2
Fdt Draining time
0 to 120 min
0
Pr2
dPo First defrost after start-up
n=after idF; y=immed.
n
Pr2
dAF Defrost delay after fast freezing
0.0 to 23h50min
0.0
Pr2
Fnc Fan operating mode
C-n; o-n; C-y; o-Y
o-n
Pr1
Fnd Fan delay after defrost
0 to 255 min
10
Pr1
FCt
Differential of temperature for forced
activation of fans
0 yo 50°C
10
Pr2
FSt Fan stop temperature
[-50 to 50°C]
[-55 to 122°F]
2
Pr1
Fon Fan on time with compressor off
0 to 15 min
0
Pr2
FoF Fan off time with compressor off
0 to 15 min
0
Pr2
FAP Probe selection for fan management
nP; P1; P2; P3; P4
P2
Pr2
ACH Kind of action for auxiliary relay
CL; Ht
cL
Pr2
SAA Set Point for auxiliary relay
[-55.0 to 150°C]
[-67 to 302°F]
0,0
Pr2
SHy Differential for auxiliary relay
[0.1 to 25.5°C]
[1 to 45°F]
2,0
Pr2
ArP Probe selection for auxiliary relay
nP; P1; P2; P3; P4
nP
Pr2
Sdd Auxiliary relay operating during defrost
n(0); Y(1)
n
Pr2
ALP Alarm probe selection
nP; P1; P2; P3; P4
P1
Pr2
ALC Temperat. alarms configuration
rE= related to set;
Ab = absolute
Ab
Pr2
ALU MAXIMUM temperature alarm
[SET to 150.0°C]
[SET to 302°F]
110,0
Pr1
ALL Minimum temperature alarm
[-55.0°C to SET]
[-67°F to SET]
-50,0
Pr1
AFH Differential for temperat. alarm recovery
[0.1 to 25.5°C]
[1 to 45°F]
2,0
Pr2
ALd Temperature alarm delay
0 to 255 min
15
Pr2
dAo Delay of temperature alarm at start up
0.0 to 23h50min
1,3
Pr2
AP2 Probe for temperat. alarm of condenser
nP; P1; P2; P3; P4
P4
Pr2
AL2 Condenser for low temperat. alarm
[-55 to 150°C]
[-67 to 302°F]
-40
Pr2
AU2 Condenser for high temperat. alarm
[-55 to 150°C]
[-67 to 302°F]
110
Pr2
AH2 Differ. for condenser temp. alar. recovery
[0.1°C to 25.5°C]
[1°F to 45°F]
5
Pr2
Ad2 Condenser temperature alarm delay
0 to 254 min; 255=nU
15
Pr2
dA2 Delay of cond. temper. alarm at start up
0.0 to 23h50min
1,3
Pr2
bLL
Compr. off for condenser low
temperature alarm
n(0); Y(1)
n
Pr2
AC2
Compr. off for condenser high
temperature alarm
n(0); Y(1)
n
Pr2
tbA Alarm relay disabling
n(0); Y(1)
y
Pr2
