Installing and Operating Instructions
1592020022
1592020022 XR20CX GB ES m&M r1.1 05.03.2007.doc XR20CX 4/4
Display: 3 digits, red LED, 14,2 mm high; Inputs: Up to 4 NTC or PTC probes.
Digital input: free voltage contact
Relay outputs: compressor SPST 8(3) A, 250Vac; or 20(8)A 250Vac
Data storing: on the non-volatile memory (EEPROM).
Kind of action: 1B; Pollution grade: 2;Software class: A.;
Rated impulsive voltage: 2500V; Overvoltage 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): ±1 °C ±1
digit
16. CONNECTIONS
The X-REP output excludes the TTL output.. It’s present in the following codes:
XR20CX- xx2xx, XR20CX –xx3xx;
16.1 XR20CX – 8A COMPRESSOR
N.C.
12 3 6 7
9101112
Comp
Room
8
Hot Key/IV Probe
TTL or X-REP output
8(3)A250V
Line
12Vac/dc supply: connect to the terminals 7 and 8.
24Vac/dc supply: connect to the terminals 7 and 8.
120Vac supply: connect to the terminals 7 and 8.
16.2 XR20CX – 20A COMPRESSOR
456 7
9101112
Comp
Room
8
Hot Key/IV Probe
TTL or X-REP output
20(8)A250V
Line
12Vac/dc supply: connect to the terminals 7 and 8.
24Vac/dc supply: connect to the terminals 7 and 8.
120Vac supply: connect to the terminals 7 and 8.
17. DEFAULT SETTING VALUES
Labe
Name Range °C/°F
Set
Set point LS÷US 3.0/37 - - -
Hy
Differential
0,1÷25.5°C/ 1÷ 255°F
2.0/4 Pr1
LS
Minimum set point
-50°C÷SET/-58°F÷SET
-50/-58 Pr2
US
Maximum set point
SET÷110°C/ SET ÷ 230°F
110/230 Pr2
Ot
Thermostat probe calibration
-12÷12°C /-120÷120°F
0.0/0 Pr1
P3P
Third probe presence n=not present; Y=pres. n Pr2
O3
Third probe calibration
-12÷12°C /-120÷120°F
0.0/0 Pr2
P4P
Fourth probe presence n=not present; Y=pres. n Pr2
O4
Fourth probe calibration
-12÷12°C /-120÷120°F
0.0/0 Pr2
OdS
Outputs delay at start up 0÷255 min 0 Pr2
AC
Anti-short cycle delay
0 ÷ 50 min
1 Pr1
CCt
Continuos cycle duration 0.0÷24.0h 0.0 Pr2
CCS Set point for continuous cycle (-55.0÷150,0°C) (-67÷302°F)
3/37 Pr2
COn
Compressor ON time with faulty probe
0 ÷ 255 min
15 Pr2
COF
Compressor OFF time with faulty
probe
0 ÷ 255 min
30 Pr2
CH
Kind of action CL=cooling; Ht= heating cL Pr1
CF
Temperature measurement unit
°C ÷ °F
°C/°F Pr2
rES
Resolution
in=integer; dE= dec.point
dE /in Pr1
dLy Display temperature delay 0 ÷ 20.0 min (10 sec.) 0 Pr2
IdF
Interval between defrost cycles
1 ÷ 120 ore
8 Pr1
MdF
(Maximum) length for defrost
0 ÷ 255 min
20 Pr1
dFd
Displaying during defrost
rt, it, SEt, DEF
it Pr2
dAd MAX display delay after defrost 0 ÷ 255 min 30 Pr2
ALc
Temperat. alarms configuration
rE= related to set;
Ab = absolute
Ab Pr2
ALU
MAXIMUM temperature alarm
Set÷110.0°C; Set÷230°F
110/230 Pr1
ALL
Minimum temperature alarm
-50.0°C÷Set/ -58°F÷Set
-50/-58 Pr1
AFH
Differential for temperat. alarm
recovery
(0,1°C÷25,5°C) (1°F÷45°F)
½ Pr2
ALd
Temperature alarm delay
0 ÷ 255 min
15 Pr2
dAo
Delay of temperature alarm at start up
0 ÷ 23h e 50’
1.3 Pr2
AP2
Probe for temperat. alarm of
condenser
nP; P1; P2; P3; P4
P4 Pr2
AL2 Condenser for low temperat. alarm (-55 ÷ 150°C) (-67÷ 302°F) -40/-40 Pr2
AU2 Condenser for high temperat. alarm (-55 ÷ 150°C) (-67÷ 302°F) 110/230 Pr2
AH2
Differ. for condenser temp. alar.
recovery
[0,1°C ÷ 25,5°C] [1°F ÷
45°F]
5/4 Pr2
Ad2 Condenser temperature alarm delay 0 ÷ 254 (min.) , 255=nU 15 Pr2
dA2
Delay of cond. temper. alarm at start
up 0.0 ÷ 23h 50’
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
i1P
Digital input polarity oP=opening;CL=closing cL Pr1
i1F
Digital input configuration EAL, bAL, PAL, dor; dEF; Htr,
AUS
dor Pr1
did
Digital input alarm delay 0÷255min 15 Pr1
nPS Number of activation of pressure
switch
0 ÷15
15 Pr2
odc
Compress status when open door no; Fan; CPr; F_C no Pr2
rrd
Regulation restart with door open
alarm
n – Y
y Pr2
HES
Differential for Energy Saving (-30°C÷30°C) (-54°F÷54°F) 0/0 Pr2
Adr
Serial address 0÷247 1 Pr2
PbC
Kind of probe Ptc; ntc ntc Pr1
onF
on/off key enabling nu, oFF; ES ES Pr2
dP1
Room probe display -- -- Pr1
dP3
Third probe display -- -- Pr1
dP4
Fourth probe display -- -- Pr2
rSE
Real set point value actual set -- Pr2
rEL
Software release -- -- Pr2
Ptb
Map code -- -- Pr2
Dixell S.p.A. Z.I. Via dell’Industria, 27
32010 Pieve d’Alpago (BL) ITALY
tel. +39 - 0437 - 98 33 - fax +39 - 0437 - 98 93 13
E-mail: dixell@dixell.com - http://www.dixell.com
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