Arctiko LTF 225, Operating Instructions Manual, Page: 11 / 20

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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 with door open:
no, Fan = normal; CPr;
F_C =
Compressor OFF.
rrd Outputs restart after doA alarm: no =
outputs not affected by the doA alarm;
yES =
outputs restart
with the doA alarm;
HES Temperature increase during the Energy Saving cycle:
(-30,0°C÷30,0°C/-22÷86°F) it sets the
increasing value of the set point during the Energy Saving cycle.
Adr Serial address
(1÷244): Identifies the instrument address when connected to a ModBUS compatible
monitoring system.
PbC Type of probe:
it allows to set the kind of probe used by the instrument: PtC = PTC probe, Pt1 =
Pt1000 probe.
onF on/off key enabling:
nu = disabled; oFF = enabled; ES = not set it.
rSE Real set point:
(readable only), 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.
DIGITAL INPUT
The free voltage digital input is programmable in different configurations by the “i1F” parameter.
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 = 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.
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.
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.
OTHER
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.