dIXEL
Installing and Operating Instructions
PRELIMINARY
MANUAL RNC 2007 053 PRELIMINARY T66 + XW60K.doc
T66 – XW60K
3/4
ALL Minimum temperature alarm
: (-50.0 ÷ SET°C; -58÷230°F when this
temperature is reached the alarm is enabled, after the “ALd” delay time.
ALd Temperature alarm delay
: (0÷255 min) time interval between the detection
of an alarm condition and alarm signalling.
dAO Exclusion of temperature alarm at startup
: (from 0.0 min to 23.5h) time
interval between the detection of the temperature alarm condition after
instrument power on and alarm signalling.
CONFIGURABLE RELAY
oA2 Relay 5-6 configuration:
ALr
: alarm;
LHt =
light;
onF
: always on;
dEF:
do not select it!.
; FAn:
do not select it!.
DIGITAL INPUT: depends on the jumper present on the keyboard.
With jumper inserted (digital input disabled) set i1P = oP.
i1P Digital input polarity: oP:
the digital input is activated by opening the
contact;
CL:
the digital input is activated by closing the contact.
i1F Digital input configuration: EAL
= external alarm: “EA” message is
displayed;
bAL
= serious alarm “CA” message is displayed.
PAL
=
pressure switch alarm, “CA” message is displayed;
dor
= door switch
function;
dEF
= activation of a defrost cycle;
LHt
=not enabled;
Htr
= kind
of action inversion (cooling – heating).
did
:
(0
÷
255 min)
with
i1F= EAL or i1F = bAL digital input alarm delay:
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:
time interval to calculate the number of the
pressure switch activation.
Lio = door switch turning light on.
with
Lio
= y light relay is switched on when the door is open (i1F=dor, oA2
= Lht)
with
Lio
= n the status of the door switch doesn’t influence the status of
the light relay.
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.
odc Compressor status when open door:
no,
Fan
= normal;
CPr, F_C
=
Compressor OFF
OTHER
PbC Type of probe:
it allows to set the kind of probe used by the instrument:
PbC
= PBC probe,
ntC =
NTC probe.
dP1 First probe display
dP2 Second probe display
rEL Software
release
for internal use.
Ptb
Parameter table code:
readable only.
8. DIGITAL INPUT:
******Digital input is available only if the jumper, present in the keyboard, is
not inserted.*****
If the jumper is inserted, please set i1P = op
The free contact digital input is programmable in five 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
. 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 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 “
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 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.
8.5 START DEFROST (I1F = DFR)
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 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 DIGITAL INPUTS POLARITY
The digital input polarity depends on the “
i1P
” parameter. If the digital input is not
used (jumper inserted) set i1P = oP.
i1P=CL
: the input is activated by closing the contact.
i1P=OP
: the input is activated by opening the contact
9. INSTALLATION AND MOUNTING
9.1 T66 SHALL BE MOUNTED ON VERTICAL PANEL, CUT
OUT
10. ELECTRICAL CONNECTIONS
The instrument is provided with screw terminal block to connect cables with a
cross section up to 2,5 mm
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.
10.1 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.
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.
3. Automatically
the
parameter list of the
“Hot Key”
is downloaded into the
Controller memory, 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.
12. ALARM SIGNALS
Message
Cause
Outputs
“P1”
Room probe failure
Compressor output according
to par. “Con” and “COF”
“P2”
Evaporator probe failure
Defrost end is timed
“HA” Maximum
temperature alarm
Outputs unchanged.
“LA”
Minimum temperature alarm
Outputs unchanged.
“dA”
Door open
Regulation restarts
“EA”
External alarm
Output unchanged.
“CA”
Serious external alarm (i1F=bAL)
All outputs OFF.
“CA”
Pressure switch alarm (i1F=PAL)
All outputs OFF
12.1 ALARM RECOVERY
Probe alarms “
P1
” and “
P2
” 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
” and “
LA
” automatically stop as soon as the thermostat
temperature returns to normal values and when defrost starts.
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. TECHNICAL DATA
T66 keyboard
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)
