1598024314 XR30CX VST GB r3.1 05.10.2015.doc
XR30CX
3/4
did
Digital input alarm delay when i1F=EAL or i1F=bAL: (0÷255 min) delay between
the detection of the external alarm condition and its signalling.
With i1F= dor: door open signalling delay.
With i1F=PAL: time for pressure switch function. It is the time
interval to calculate the number of the pressure switch activation.
nPS
Number of pressure switch activation: (0
15) Number of activation, during the
did interval, before signalling an alarm event (i2F=PAL).
If the nPS activation during did time is reached, switch off and on the instrument to
restart normal regulation.
odc
Compressor status when open door: (no; FAn; CPr;F_C;) no = normal;
FAn = normal; CPr = compressor OFF, F_C = compressor OFF.
rrd
Outputs restart after doA alarm: (n; Y) n = outputs not affected by the doA alarm;
Y = outputs restart with the doA alarm.
HES
Temperature increase during the Energy Saving cycle: (-30.0
30.0°C; -54
54°F) it sets the increasing value of the set point [SET+HES] during the Energy
Saving cycle.
OTHER
Adr
Serial address: (1÷244) identifies the instrument address when connected to a
ModBUS compatible monitoring system.
PbC
Type of probe: (ntC, CtC) it allows to set the kind of probe used by the instrument:
PtC = PTC probe, Pt1 = Pt1000 probe.
onF
On/Off key enabling: (nU; oFF; ES) nU = disabled; oFF = enabled; ES = not set it.
rSE
Real set point: it shows the set point used during the energy saving cycle or during
the continuous cycle.
rEL
Software release for internal use.
Ptb
Parameter table code: readable only.
8. DIGITAL INPUT
The free voltage digital input is programmable in different configurations by the i1F parameter.
8.1
DOOR SWITCH INPUT (i1F = dor)
It signals the door status and the corresponding relay output status through the odC parameter: no,
Fan = normal (any change); CPr, F_C = Compressor 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=Y. 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.
8.2
GENERIC ALARM (i1F = EAL)
As soon as the digital input is activated the unit will wait for did time delay before signalling the “EAL”
alarm message. The outputs status doesn’t change. The alarm stops just after the digital input is de-
activated.
8.3
SERIOUS ALARM MODE (i1F = 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.
8.4
PRESSURE SWITCH (i1F = PAL)
If during the interval time set by did parameter the pressure switch reaches the nPS number of
activation, the “CA” pressure alarm message will be displayed and the compressor and the regulation
will be 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.
8.5
START DEFROST (i1F = dFr)
A defrost will start 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 for MdF safety time to
expire.
8.6
INVERSION OF THE KIND OF ACTION: HEATING-COOLING (i1F = Htr)
This function allows to invert the regulation of the controller: from cooling to heating and viceversa.
8.7
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.
8.8
DIGITAL INPUTS POLARITY
The digital input polarity depends on the i1P parameter.
i1P=CL: the input is activated by closing the contact.
i1P=OP: the input is activated by opening the contact
9. TTL SERIAL LINE – FOR MONITORING SYSTEMS
It is possible to connect the instrument to a ModBUS-RTU compatible monitoring system (e.g.
X-WEB500/3000/300) by using the TTL serial line available on the HOTKEY connector. An external
adapter has to be used to connect the device to the network (e.g. a TTL/RS485 converter XJ485-
CX).
10. INSTALLATION AND MOUNTING
Instrument XR30CX shall be mounted on vertical panel, in a 29x71
mm hole, and fixed using the special bracket 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 air circulate by the cooling holes.
11. ELECTRICAL CONNECTIONS
The instrument is provided with screw terminal block to connect cables with a cross section up to
2.5mm
2
. 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.
11.1
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.
12. HOW TO USE THE HOT KEY
12.1
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 UP button; the “uPL” message
appears followed a by a flashing “End” label.
3.
Push SET button and the “End” will stop flashing.
4.
Turn OFF the instrument, remove the “HOT-KEY” and then turn it ON again.
NOTE: the “Err” message appears in case of a failed programming operation. In this case push again
button if you want to restart the upload again or remove the “HOT-KEY” to abort the operation.
12.2
HOW TO PROGRAM AN INSTRUMENT USING A HOT KEY (DOWNLOAD)
1.
Turn OFF the instrument.
2.
Insert a pre-programmed “Hot Key” into the 5-PIN receptacle and then turn the Controller
ON.
3.
The parameter list of the “Hot Key” will be automatically downloaded into the Controller
memory. The “doL” message will blink followed a by a flashing “End” label.
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.
13. ALARM SIGNALS
Message
Cause
Outputs
“P1”
Room probe failure
Compressor output acc. to par. Con and CoF.
“HA”
Maximum temperature alarm
Outputs unchanged.
“LA”
Minimum temperature alarm
Outputs unchanged.
“dA”
Door open
Compressor restart according to rrd.
“EA”
External alarm
Output unchanged.
“CA”
Serious external alarm (i1F=bAL) All outputs OFF.
“CA”
Pressure switch alarm (i1F=PAL) All outputs OFF
13.1
ALARM RECOVERY
Probe alarm “P1” starts 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” and “LA” 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.
13.2
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
noA No alarm recorded.
14. TECHNICAL DATA
Housing: self extinguishing ABS.
Case: XR30CX frontal 32x74mm; depth 60mm.
Mounting: XR30CX panel mounting in a 71x29mm panel cut-out.
Protection: IP20. Frontal protection: XR30CX IP65.
Connections: Screw terminal block
2.5 mm
2
wiring.
Model 7020346 and 7020345: fast-on tabs 6,3mm for loads and power supply; Disconnect able
screw terminal blocks for probe, digital input and
Power supply: according to the model: 100Vac
10%, 50/60Hz; or 230Vac
10%, 50/60Hz, or
120Vac
10%, 50/60Hz, or
Power absorption: 3VA max.
Display: 3 digits red LEDs, 14.2 mm high.
Digital input: free voltage contact.
Analogue Input: a PT1000 or PTC probe, set via parameter.
Relay outputs:
Compressor: 20(8)A, 250Vac.
Alarm: SPDT 8(3)A, 250Vac.
Connectors for external backup battery (only for battery-backup model).
Data storing: on the non-volatile memory (EEPROM).
Kind of action: 1B. Pollution degree: 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:
Pt1000 probe: -100÷100°C (-148÷212°F).
