Dixell
Operating instructions
1592002711
1592002711 XH260L-V GB r1.0 12.01.04
XH260L - XH260V
3/5
ALC = Ab , - 50°C or -58°F
÷
ALU
when this temperature is reached and after the ALd delay time, the LA alarm is enabled,.
ALU High temperature alarm setting:
ALC= rE, 0
÷
50°C or 90°F
ALC= Ab, ALL
÷
110°C or 230°F
when this temperature is reached and after the ALd delay time the HA alarm is enabled.
ALH Temperature alarm recovery differential: (0,1÷25,5°C; 1÷45°F) Intervention differential for
recovery of temperature alarm.
ALd Temperature alarm delay: (0÷255 min) time interval between the detection of an alarm condition
and the corresponding alarm signalling.
dAO Delay of temperature alarm at start-up: (0min÷23h 50min) time interval between the detection
of the temperature alarm condition after the instrument power on and the alarm signalling.
EdA Alarm delay at the end of defrost: (0
÷
255 min) Time interval between the detection of the
temperature alarm condition at the end of defrost and the alarm signalling.
dot Delay of temperature alarm after closing the door : (0
÷
255 min) Time delay to signal the
temperature alarm condition after closing the door.
HUMIDITY ALARMS
AHC Humidity alarm configuration: rE = High and Low alarms related to humidity Set Point
Ab = High and low alarms related to the “absolute” humidity.
AHL Low humidity alarm setting: (with AHC = rE:
0 ÷ 50
. With AHC = Ab:
Lci ÷ AHu)
when this humidity is reached and after the AHd delay time, the HLA alarm is enabled,.
AHu High humidity alarm setting: (with AHC = rE: 0÷50°C. with AHC = Ab:
AHL ÷ uci
when this humidity is reached and after the AHd delay time the HHA alarm is enabled.
AHH Humidity alarm recovery differential: (0.5÷20.0) Intervention differential for recovery of
humidity alarm.
AHd Humidity alarm delay: (0÷255 min) time interval between the detection of an alarm condition and
the corresponding alarm signalling.
dHo Delay of humidity alarm at start-up: (0min÷23h 50min) time interval between the detection of
the humidity alarm condition after the instrument power on and the alarm signalling.
doH Alarm delay at the end of defrost: (0
÷
255 min) Time interval between the detection of the
humidity alarm condition at the end of defrost and the alarm signalling.
doA Open door alarm delay:(0÷255 min) delay between the detection of the open door condition and
its alarm signalling: the flashing message “dA” is displayed.
nPS Pressure switch number: (0
÷
15) Number of activation of the pressure switch, during the “did”
interval, before signalling the alarm event (I2F= PAL).
If the nPS activation in the “did” time is reached, switch off and on the instrument to
restart normal regulation.
PROBE INPUTS
Ot Thermostat probe calibration: (-12.0
÷
12.0°C/ -21
÷
21°F) allows to adjust possible offset of the
thermostat probe.
OE Evaporator probe calibration: (-12.0
÷
12.0°C/ -21
÷
21°F) allows to adjust possible offsets of the
evaporator probe.
O3 Humidity probe calibration: (-10
÷
10 RH) allows to adjust possible offsets of the humidity probe.
P2P Evaporator probe presence: n= not present: the defrost stops only by time; y= present: the
defrost stops by temperature and time.
P3P Humidity probe presence: n= not present; y= present.
LCI Readout with 4 mA : (-999 ÷ 999). Adjustment of read out corresponding to 4mA signal.
UCI Readout with 20 mA : (-999 ÷ 999). Adjustment of read out corresponding to 20mA signal.
DIGITAL INPUTS
i1P Digital input polarity: CL : the digital input is activated by closing the contact;
OP : the
digital input is activated by opening the contact
i1F Digital input operating mode: configure the digital input function: EAL
= generic alarm;
bAL = serious alarm mode; PAL = Pressure switch; Ht = heating relay safety; dor = door switch
odc Outputs status when open door: on = normal; Fan = Fan OFF; oFF = all the loads off
rrd Outputs restarting after doA alarm: no = outputs not affected by the doA alarm; yES = outputs
restart with the doA alarm;
did Time interval/delay for digital input alarm:(0
÷
255 min.) Time interval to calculate the number of
the pressure switch activation when I1F=PAL. If I1F=EAL or bAL (external alarms), “did”
parameter defines the time delay between the detection and the successive signalling of alarms.
OTHER
oA1 Light relay configuration (XH260L terminals 3-4, XH260V terminals. 11-12): ALr = alarm;
dEH = dehumidifier; onF = on/off relay: close with instrument on, open with instrument off; Lig =
light, ESt, dEF not select
Adr RS485 serial address (0÷247) identifies the instrument within a control or supervising system.
Ptb Parameter table: (read only) it shows the original code of the
dIXEL
parameter map.
rEL Software release: (read only) Software version of the microprocessor.
Prd Probes display: (read only) display the temperature values of the evaporator probe Pb2.
Pr2 Access to the protected parameter list (read only).
8.
DIGITAL INPUT
One digital input is present configurable by user by means of the i1F parameter according to the
following descriptions.
8.1
DOOR SWITCH (I1F = dor)
It signals the door status and the corresponding relay output status through the “odc” parameter: no =
normal (any change); Fan = Fan OFF; oFF = all the loads are switched off.
Since the door is opened, after the delay time set through parameter “dOA”, the alarm output is
enabled and the display shows the message “dA”.
The status of loads depends on the “rrd” parameter:
with rrd=no outputs are not affected by the doA alarm;
with rrd=yES = outputs restart with the doA alarm;
The alarm stops as soon as the external digital input is disabled again. During this time and then for the
delay “dot” and “doH” after closing the door, the temperature and humidity 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 don’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 “bAL” 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 has reached the number of
activation of the “nPS” parameter, the “PAL” 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.
8.5
HEATING RELAY SAFETY (i1F=Ht)
With i1F=Ht as soon as the digital input is activated for “did” time heating relay is disabled.
The alarm will stop as soon as the digital input is de-activated.
8.6
DIGITAL INPUTS POLARITY
The digital input polarity depends on the “i1P” parameters.
CL : the digital input is activated by closing the contact.
OP : the digital input is activated by opening the contact
9.
INSTALLATION AND MOUNTING
Instruments XW240L shall be mounted on vertical panel, in a 150x31 mm hole, and fixed using two
screws
∅
3 x 2mm. To obtain an IP65 protection grade use the front panel rubber gasket (mod. RG-L).
Instrument XH260V shall be mounted on vertical panel, in a 72x56 mm hole, and fixed using screws
∅
3 x 2mm. To obtain an IP65 protection grade use the front panel rubber gasket (mod. RG-V).
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.
9.1
XH260V: CUT OUT
56
72
40
83
,5
9.2
XH260L: CUT OUT
165
150
31
+0.5
-0
+0.
5
-0
+1
-1
Ø3 x2
10.
ELECTRICAL CONNECTIONS
The instruments are provided with screw terminal block to connect cables with a cross section up to 2,5
mm
2
for the digital and analogue inputs. Relays and power supply have a Faston connection (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.
10.1
PROBE CONNECTIONS
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.
11.
HOW TO USE THE HOT KEY
11.1
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”
3.
Push “SET” key and the End will stop flashing.
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.
11.2
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.