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INSTRUCTION MANUAL
8.2 SERIOUS ALARM MODE (i1F or i2F = bAL)
When the digital input is activated, the unit will wait for "did" delay before signalling the "CA" alarm
message. The relay outputs are switched OFF. The alarm will stop as soon as the digital input is de-
activated.
8.3 PRESSURE SWITCH (i1F or i2F = PAL)
If during the interval time set by "did" parameter, the pressure switch has reached the number of
activation of
the "nPS" parameter, the "CA" pressure alarm message will be displayed. The
compressor and the regulation are stopped. When the digital input is ON the compressor is always
OFF. If the nPS activation in the did time is reached, switch off and on the instrument to
restart normal regulation.
8.4 DOOR SWITCH INPUT (i1F or i2F = dor)
It signals the door status and the corresponding relay output status through the "odc" parameter: no
= normal (any change); Fan = Fan OFF; CPr = Compressor OFF; F_C = Compressor and fan OFF.
Since the door is opened, after the delay time set through parameter "did", the door alarm is enabled,
the display shows the message "dA" and the regulation restarts is rtr = yES. The alarm stops as
soon as the external digital input is disabled again. With the door open, the high and low temperature
alarms are disabled.
8.5 START DEFROST (i1F or i2F = dEF)
It starts a defrost if there are the right conditions. After the defrost is finished, the normal regulation
will restart only if the digital input is disabled otherwise the instrument will wait until the "MdF" safety
time is expired.
8.6 SWITCH THE AUXILIARY RELAY (i1F or i2F = AUS)
With oA3 or oA4 = AUS the digital input switched the status of the auxiliary relay
8.7 INVERSION OF THE KIND OF ACTION: HEATING-COOLING (i1F or
i2F=Htr)
This function allows to invert the regulation of the controller: from cooling to heating and viceversa.
8.8 ENERGY SAVING (i1F = ES)
The Energy Saving function allows to change the set point value as the result of the SET+ HES
(parameter) sum. This function is enabled until the digital input is activated.
8.9 HOLIDAY DEFROST (i1F or i2F = HDF) –ONLY FOR MODELS WITH RTC
This function enabled the holiday defrost setting.
8.10 ON OFF FUNCTION (i1F or i2F = onF)
To switch the controller on and off.
8.11 DIGITAL INPUTS POLARITY
The digital input polarity depends on the "i1P" and "i2P" parameters.
i1P or i2P =CL: the input is activated by closing the contact.
i1P or i2P=OP: the input is activated by opening the contact
9. TTL SERIAL LINE – FOR MONITORING SYSTEMS
The TTL serial line, available through the HOT KEY connector, allows by means of the external
TTL/RS485 converter, XJ485-CX, to connect the instrument to a monitoring system ModBUS-RTU
compatible such as the X-WEB500/3000/300.
10. X-REP OUTPUT – OPTIONAL
As optional, an X-REP can be connected to the instrument, trough the dedicated
connector.
11. INSTALLATION AND MOUNTING
The controller XW70LHH, shall be mounted on vertical panel, in a 150x31 mm hole, and fixed using
the brackets supplied. The temperature range allowed for correct operation is 0 - 60 °C. Avoid places
subject to strong vibrations, corrosive gases, excessive dirt or humidity. The same recommendations
apply to probes. Let the air circulate by the cooling holes.
11.1 CUT OUT
12. ELECTRICAL CONNECTIONS
The instruments are provided with screw terminal block to connect cables with a cross section up to
2,5 mm
for the digital and analogue inputs. Relays and power supply have a Faston connection
2
(6,3mm). Heat-resistant cables have to be used. Before connecting cables make sure the power
supply complies with the instrument's requirements. Separate the probe cables from the power supply
cables, from the outputs and the power connections. Do not exceed the maximum current allowed on
each relay, in case of heavier loads use a suitable external relay.
N.B. Maximum current allowed for all the loads is 20A.
1592036010 XW70LH GB r1.0 14.02.2014.docx
J
.P. SELECTA s.a.u.
CODE 80412 REV 0
To connect the X-REP to the
instrument the following
connectors must be used
CAB/REP1(1m), CAB/REP2
(2m), CAB/REP5 (5m),
Autovía A-2 Km 585.1 Abrera 08630 (Barcelona) España
e-mail: selecta@jpselecta.es - website: http://www.grupo-selecta.com
12.1 PROBE CONNECTION
The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid
infiltration. It is recommended to place the thermostat probe away from air streams to correctly
measure the average room temperature. Place the defrost termination probe among the evaporator
fins in the coldest place, where most ice is formed, far from heaters or from the warmest place during
defrost, to prevent premature defrost termination.
13. HOW TO USE THE HOT KEY
13.1 HOW TO PROGRAM A HOT KEY FROM THE INSTRUMENT (UPLOAD)
1.
Program one controller with the front keypad.
2.
When the controller is ON, insert the "Hot key" and push o key; the "uPL" message
appears followed a by flashing "End"
Push "SET" key and the End will stop flashing.
3.
4.
Turn OFF the instrument remove the "Hot Key", then turn it ON again.
NOTE: the "Err" message is displayed for failed programming. In this case push again o key if you
want to restart the upload again or remove the "Hot key" to abort the operation.
13.2 HOW TO PROGRAM AN INSTRUMENT USING A HOT KEY
(DOWNLOAD)
1.
Turn OFF the instrument.
2.
Insert a programmed "Hot Key" into the 5 PIN receptacle and then turn the Controller ON.
Automatically the parameter list of the "Hot Key" is downloaded into the Controller memory,
3.
the "doL" message is blinking followed a by flashing "End".
4.
After 10 seconds the instrument will restart working with the new parameters.
5.
Remove the "Hot Key"..
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
"P4"
Fourth 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" 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.
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 76mm
Mounting : panel mounting in a 150x31 mm panel cut-out
Protection: IP20; Frontal protection: IP65
Connections: Screw terminal block
Power supply: 230Vac or. 110Vac or 24Vac
Power absorption: 5VA max.
Display: 3 digits, red LED, 14,2 mm high.
Display: 3 digits, red 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
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)
XW70LH
03/2021
Page: 22
Outputs
Compressor output acc. to par. "Con" and "COF"
Defrost end is timed
Outputs unchanged
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
2,5 mm
heat-resistant wiring and 6,3mm Faston
2
10%
Tel 34 937 700 877 Fax 34 937 702 362
4/5
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