B3: DIXELL OPERATING INSTRUCTIONS
dIXEL
Operating instructions
1592002701
1592002701 XH240L-V GB r1.0 12.01.2004 *
XH240L - XH240V
3/4
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
y
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
y
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
y
12.0°C/ -21
y
21°F) allows to adjust possible offset
of the thermostat probe.
O3 Humidity probe calibration:
(-10
y
10 RH) allows to adjust possible offsets of the humidity
probe.
P3P Humidity probe presence: yES=
probe present;
no=
probe absent, only the temperature
control is perfomed.
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 are switched 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
y
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
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.
Pr2 Access to the protected parameter list
(read only).
7.
DIGITAL INPUT
One digital input is present configurable by user by means of the i1F parameter according tothe
following descriptions.
7.1
DOOR SWITCH (12F = 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.
7.2
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 st
atus don’t change. The alarm stops just after the digital
input is de-activated.
7.3
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.
7.4
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.
7.5
HEATING RELAY SAFETY (i1F=Ht)
With
i1F=Ht
as soon as the digital input is activated for “
did
” time heating relay is disactivated.
The alarm will stop as soon as the digital input is de-activated.
7.6
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
8.
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
XH240V
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.
8.1
XH240V: CUT OUT
56
72
40
83
,5
8.2
XH240L: CUT OUT
165
150
31
+0.5
-0
+
0.
5
-0
+1
-1
Ø3 x2
9.
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.
9.1
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.
10.
HOW TO USE THE HOT KEY
10.1
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.
10.2
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.
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