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3.
Automatically the parameter list of the "Hot Key" is downloaded into the Controller memory,
the "doL" message is blinking followed a by flashing "End".
4.
After 10 seconds the instrument will restart working with the new parameters.
Remove the "Hot Key"..
5.
NOTE the message "Err" is displayed for failed programming. In this case turn the unit off and then on
if you want to restart the download again or remove the "Hot key" to abort the operation.
14. ALARM SIGNALS
Message
Cause
"P1"
Room probe failure
"P2"
Evaporator probe failure
"P3"
Third probe failure
"HA"
Maximum temperature alarm
"LA"
Minimum temperature alarm
"HA2"
Condenser high temperature
"LA2"
Condenser low temperature
"dA"
Door open
"EA"
External alarm
"CA"
Serious external alarm (i1F=bAL) All outputs OFF.
"CA"
Pressure switch alarm (i1F=PAL) All outputs OFF
"rtc"
Real time clock alarm
rtF
Real time clock board failure
14.1 SILENCING BUZZER / ALARM RELAY OUTPUT
If "tbA = y", the buzzer and the relay are is silenced by pressing any key.
If "tbA = n", only the buzzer is silenced while the alarm relay is on until the alarm condition recovers.
14.2 ALARM RECOVERY
Probe alarms P1", "P2", "P3" 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.
14.3 OTHER MESSAGES
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
15. TECHNICAL DATA
Housing: self extinguishing ABS.
Case: facia 38x185 mm; depth 48mm
Mounting : panel mounting in a 150x31 mm panel cut-out with two screws.
Distance between the holes 165mm
Protection: IP20; Frontal protection: IP65 with frontal gasket mod RG-L. (optional)
Connections: Screw terminal block
2,5 mm
≤
Power supply: 230Vac or. 110Vac or 24Vac
Display: 3 digits, red LED, 14,2 mm high; Inputs: Up to 3 NTC or PTC probes.
Digital input: 1 free voltage
Relay outputs: Total current on loads MAX. 20A
compressor: relay SPST 20(8) A, 250Vac
light: relay SPST 7 A, 250Vac
Other output : buzzer (optional)
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 grade: 2;Software class: A.;
Rated impulsive voltage: 2500V; Over voltage Category: II
Operating temperature: 0÷60 °C; Storage temperature: -30÷85 °C.
Relative humidity: 20÷85% (no condensing)
Measuring and regulation range: NTC probe: -40÷110°C (-40÷230°F);
PTC probe: -50÷150°C (-58÷302°F)
Resolution: 0,1 °C or 1°C or 1 °F (selectable); Accuracy (ambient temp. 25°C): ±0,7 °C ±1 digit
16. CONNECTIONS
16.1 XW20LS – DRY CONTACTS
Supply: 120Vac or 24Vac: connect to terminals 7-8
The X-REP output is optional
1592027320 XW20LS RTC GB r1.0 18.03.2015
Outputs
Compressor output acc. to par. "Con" and "COF"
Defrost end is timed
Outputs unchanged
Outputs unchanged.
Outputs unchanged.
It depends on the "Ac2" parameter
It depends on the "bLL" parameter
Compressor and fans restarts
Output unchanged.
Alarm output ON; Other outputs unchanged;
Defrosts according to par. "IdF" Set real time clock
has to be set
Alarm output ON; Other outputs unchanged;
Defrosts according to par. "IdF" Contact the service
3 x 2mm.
∅
heat-resistant wiring and 6,3mm Faston
2
10%; Power absorption: 5VA max.
±
16.2 XW20LS – DIRECT CONNECTIONS OF LOAD
Supply: 120Vac or 24Vac: connect to terminals 5-6
The X-REP output is optional
17. DEFAULT SETTING VALUES
Label
Name
Set Set point
rtc* Real time clock menu
Hy Differential
LS Minimum set point
US Maximum set point
Ot Thermostat probe calibration
P2P Evaporator probe presence
OE Evaporator probe calibration
P3P Third probe presence
O3 Third probe calibration
OdS Outputs delay at start up
AC Anti-short cycle delay
rtr P1-P2 percentage for regulation
CCt Continuous cycle duration
CCS Set point for continuous cycle
COn Compressor ON time with faulty probe
COF Compressor OFF time with faulty probe
CH Kind of action
CF Temperature measurement unit
rES Resolution
Lod Probe displayed
rEd
X-REP display
2
dLy Display temperature delay
dtr P1-P2 percentage for display
EdF* Kind of interval for defrost
dFP Probe selection for defrost termination
dtE Defrost termination temperature
IdF Interval between defrost cycles
MdF (Maximum) length for defrost
dFd Displaying during defrost
dAd MAX display delay after defrost
ALP Alarm probe selection
ALc Temperat. alarms configuration
ALU MAXIMUM temperature alarm
ALL Minimum temperature alarm
AFH Differential for temperat. alarm recovery
ALd Temperature alarm delay
dAO Delay of temperature alarm at start up
AP2 Probe for temperat. alarm of condenser
AL2 Condenser for low temperat. alarm
AU2 Condenser for high temperat. alarm
AH2 Differ. for condenser temp. alar. recovery
Ad2 Condenser temperature alarm delay
dA2 Delay of cond. temper. alarm at start up
bLL Compr. off for condenser low temper. alarm
AC2 Compr. off for condenser high temper alarm
i1P Digital input polarity (13-14)
i1F Digital input 1 configuration (13-14)
did Digital input alarm delay (13-14)
Nps Number of activation of pressure switch
odc Compress status when open door
rrd Regulation restart with door open alarm
HES Differential for Energy Saving
Hur* Current hour
Min* Current minute
dAY* Current day
Hd1* First weekly holiday
Hd2* Second weekly holiday
ILE* Energy Saving cycle start during workdays
dLE* Energy
Saving
cycle
workdays
ISE* Energy Saving cycle start on holidays
dSE* Energy Saving cycle length on holidays
Ld1* 1
workdays defrost start
st
Ld2* 2
workdays defrost start
nd
Ld3* 3
workdays defrost start
rd
Ld4* 4
workdays defrost start
th
Ld5* 5
workdays defrost start
th
XW20LS
Range
LS÷US
-
0,1÷25.5°C/ 1÷ 255°F
-50°C÷SET/-58°F÷SET
SET÷110°C/ SET ÷ 230°F
-12÷12°C /-120÷120°F
n=not present; Y=pres.
-12÷12°C /-120÷120°F
n=not present; Y=pres.
-12÷12°C /-120÷120°F
0÷255 min
0 ÷ 50 min
0 ÷ 100 (100=P1 , 0=P2)
0.0÷24.0h
(-55.0÷150,0°C) (-67÷302°F)
0 ÷ 255 min
0 ÷ 255 min
cL÷Ht
°C ÷ °F
in=integer; dE= dec.point
P1;P2
P1 – P2 – P3 – P4 – SEt – dtr
0 ÷ 20.0 min (10 sec.)
1 ÷ 99
rtc ÷in
nP; P1; P2; P3; P4
-50 ÷ 50 °C
1 ÷ 120 ore
0 ÷ 255 min
rt, it, SEt, DEF
0 ÷ 255 min
nP; P1; P2; P3; P4
rE= related to set;
Ab = absolute
Set÷110.0°C; Set÷230°F
-50.0°C÷Set/ -58°F÷Set
(0,1°C÷25,5°C) (1°F÷45°F)
0 ÷ 255 min
0 ÷ 23h e 50'
nP; P1; P2; P3; P4
(-55 ÷ 150°C) (-67÷ 302°F)
(-55 ÷ 150°C) (-67÷ 302°F)
[0,1°C ÷ 25,5°C] [1°F ÷ 45°F]
0 ÷ 254 (min.) , 255=nU
0.0 ÷ 23h 50'
n(0) - Y(1)
n(0) - Y(1)
oP=opening;CL=closing
EAL, bAL, PAL, dor; dEF; Htr, AUS
0÷255min
0 ÷15
no; Fan; CPr; F_C
n – Y
(-30°C÷30°C) (-54°F÷54°F)
0 ÷ 23
0 ÷ 59
Sun ÷ SAt
Sun÷ SAt – nu
Sun÷ SAt – nu
0 ÷ 23h 50 min.
length
during
0 ÷ 24h 00 min.
0 ÷ 23h 50 min.
0 ÷ 24h 00 min.
0 ÷ 23h 50 min. - nu
0 ÷ 23h 50 min. - nu
0 ÷ 23h 50 min. - nu
0 ÷ 23h 50 min. - nu
0 ÷ 23h 50 min. - nu
°C/°F
Level
3.0
- - -
-
Pr1
2.0
Pr1
-50.0
Pr2
110
Pr2
0.0
Pr1
Y
Pr1
0.0
Pr2
n
Pr2
0
Pr2
0
Pr2
1
Pr1
100
Pr2
0.0
Pr2
3.0
Pr2
15
Pr2
30
Pr2
cL
Pr1
°C
Pr2
dE
Pr1
P1
Pr2
P1
Pr2
0.0
Pr2
50
Pr2
in
Pr2
nP
Pr2
3
Pr1
8
Pr1
20
Pr1
it
Pr2
30
Pr2
P1
Pr2
Ab
Pr2
110,0
Pr1
-50,0
Pr1
2,0
Pr2
15
Pr2
1,3
Pr2
nP
Pr2
-40
Pr2
110
Pr2
5
Pr2
15
Pr2
1,3
Pr2
n
Pr2
n
Pr2
cL
Pr1
dor
Pr1
15
Pr1
15
Pr2
F-c
Pr2
y
Pr2
0
Pr2
-
rtc
-
rtc
-
rtc
nu
rtc
nu
rtc
0
rtc
0
rtc
0
rtc
0
rtc
6.0
rtc
13.0
rtc
21.0
rtc
0.0
rtc
0.0
rtc
4/5
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