1592009630 XW570K GB r1.0 04.08.2015
XW570K
5/6
13.1
SILENCING BUZZER / ALARM RELAY OUTPUT
If “
tbA = y
”, once the alarm signal is detected 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.
Buzzer is mounted in the
T850
keyboards and it is an option.
13.2
“EE” ALARM
The Dixell instruments are provided with an internal check for the data integrity. Alarm “EE” flashes when a
failure in the memory data occurs. In such cases the alarm output is enabled.
13.3
ALARM RECOVERY
Probe alarms : “
P1
” (probe1 faulty), “
P2
” and “
P3
”; they automatically stop 10s after the probe restarts normal
operation. Check connections before replacing the probe.
Temperature alarms “
HA
” and “
LA
” automatically stop as soon as the thermostat temperature returns to normal
values or when the defrost starts.
Door switch alarm “
dA
” stop as soon as the door is closed.
External alarms “
EAL
”, “
BAL
” stop as soon as the external digital input is disabled “
PAL
” alarm is recovered by
switching OFF the instrument.
14.
TECHNICAL DATA
T850 keyboards
Housing:
self extinguishing ABS.
Case:
facia 38x185 mm; depth 23mm
Mounting :
panel mounting in a 150x31 mm panel cut-out with two screws.
3 x 2mm.
Distance between the holes 165mm
Protection:
IP20.
Frontal protection:
IP65 with frontal gasket mod RG-L. (optional)
Connections:
Screw terminal block
2,5 mm
2
heat-resistant wiring and 6,3mm
Power supply:
from
power module
Display
: 3 digits, red LED, 14,2 mm high.
Optional output:
buzzer
Power modules XW570K
Case:
“OS”
: open board 132x 94 mm; height: 40mm.
“OA”
: open board with aluminium protection 176x 123mm; height: 52mm.
“GS”
: case 155x114; height 70mm. Self extinguishing ABS. IP55
“PS”
: case 147x110; height 47mm. Self extinguishing ABS. IP55. UL approved
Connections:
Screw terminal block
2,5 mm
2
heat-resistant wiring and 6,3mm Faston
Power supply:
230Vac or. 110Vac
10%
Power absorption:
10VA max.
Inputs
: 3 NTC probes
Digital inputs
: 2 free voltage
Relay outputs:
Total current on loads MAX. 20A
compressor:
relay SPST 20(8) A, 250Vac
light:
relay SPST 16(3) A, 250Vac (or
optional
relay SPST 16(3) A, special for fluorescent lights)
fans:
relay SPST 8(3) A, 250Vac
defrost:
relay SPST 8(3) A, 250Vac
alarm:
SPST relay 8(3) A, 250Vac
auxiliary:
SPST relay 16(3) A, 250Vac
Other output :
Analogue output
4÷20 mA (optional)
Serial output :
TTL standard. RS485 optional
Communication protocol:
ModBUS - RTU
Data storing
: on the non-volatile memory (EEPROM).
Internal clock back-up:
24 hours
Kind of action:
1B.
Pollution grade:
normal
Software class:
A.
Operating temperature:
0÷60 °C.
Storage temperature:
-25÷60 °C.
Relative humidity:
20
85% (no condensing)
Measuring and regulation range:
NTC probe:
-40÷110°C (-58÷230°F)
Resolution:
0,1 °C or 1°C or 1 °F (selectable).
Accuracy (ambient temp. 25°C)
: ±0,5 °C ±1 digit
15.
CONNECTIONS
15.1
XW570K
Connector
number
Description
Connector
number
Description
HOT KEY
Hot key for programming
9 - 10
Door switch
RS485 (Optional)
RS485 direct output
11 - 12
Alarm relay
An.Out (Optional) 4÷20 mA analogue output
13 - 14
Compressor relay
KEY (+)
+ :connection for keyboard
15
Phase
KEY (-)
- : connection for keyboard
16
Neutral
1 – 2
Display probe
17 - 18
Light relay
3 - 4
Defrost probe
19 - 20
Defrost relay
5 - 6
Room probe
21 - 22
Fan relay
7 - 8
Configurable digital input
18 -19
Auxiliary relay
16.
DEFAULT SETTING VALUES
Label Name
Range
Default Level
REGULATION
°C/°F
XW570
Set
Set point
LS÷US
-5/23
Pr1
Hy
Differential
0,1÷25,5 °C / 1÷45°F
2/4
Pr1
LS
Minimum set point
-50,0°C÷SET / -58°F÷SET
-30/-22
Pr2
US
Maximum set point
SET ÷ 110°C / SET ÷ 230°F
20/68
Pr2
OdS Outputs activation delay at start up
0÷255 min.
1
Pr2
AC
Anti-short cycle delay
0÷30 min.
1
Pr1
CCt
Compressor ON time during fast freezing
0 ÷ 23h 50 min.
0
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
DISPLAY
CF
Temperature measurement unit
°C ÷ °F
°C/°F
Pr2
rES
Resolution (integer/decimal point)
in ÷ de
de
Pr1
Red Remote display
P1 ÷ 1r2
p1
Pr2
DEFROST
tdF
Defrost type
rE, rT, in
rE
Pr1
EdF Defrost mode
rtc, In, Sd
In
Pr2
SdF Set point for SMART DEFROST
-30 ÷ +30°C / -22÷+86°F
0
Pr2
dtE
Defrost termination temperature (1°Evaporator)
-50,0÷110°C /-58÷230°F
8/46
Pr1
IdF
Interval between defrost cycles
1÷120h
6
Pr1
MdF (Maximum) length for 1° defrost
0÷255 min.
30
Pr1
dFd
Displaying during defrost
rt, it, SEt, dEF, dEG
it
Pr2
dAd MAX display delay after defrost
0÷255 min.
30
Pr2
Fdt
Draining time
0÷60 min.
0
Pr2
dPO First defrost after start up
n ÷ y
n
Pr2
dAF Defrost delay after fast freezing
0 ÷ 23h 50 min.
2
Pr2
