dixell xc440c - EA1÷EA4: Compressors or fans Safeties Alarm.; P1: Probe Failure Alarm; HA, LA, HA2, LA2 High and Low Pressure (Temperature) Alarms

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Operating instructions cod. 1592001300
1592001300 XC440C gb r1.0 07.06.2004.doc rel. 1.0
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controller number of relay of the controller.
cStP
Load (step) configuration
error
•
A relay oA(i) has been set as compressor
without a previous relay oA(i-1) has been set
as compressor. EI oA1 = StP
FAP2
P2 probe not available for
fan regulation
•
Some relays have been set as compressors
(oAi = CPr) some others have been set as
fans (oAi = FAn). Set all the oAi as
compressors or fans.
CSP2
P2 probe not available for
screw compressor
•
Check CtyP and set it different from Scr.
18.1.2 EA1÷EA4: Compressors or fans safeties alarm.
Terminals
WARNING: THESE TERMINALS REQUIRE A FREE OF VOLTAGE CONNECTION.
The terminals (6-11, 7-11, 8-11, 9-11) really used depends on the number of loads. The
protections regarding the compressors and fans are connected to these inputs. If one of these
protections is enabling (E.I. for lack of oil or overheating, etc,) the corresponding load is turn off.
Parameters
ALIP:
It establishes if the input is activated by closing (ALIP = cL) or by opening (ALIP = oP)
the terminals.
Actions
Every time one input is activated the corresponding output is turned off.
Recovery
Recovery depends on
ALMr
parameter:
With
ALMr
=
no
The instrument restart the standard operating mode when the input is
disabled.
With
ALMr
=
yES
manual recover for the alarms of compressors and fans. Push the
DOWN
key for 3s.
18.1.3 P1: probe failure alarm
It is generated by failure in the probe P1.
Parameters
According to the configuration of the controller one of the following parameters is used:
SPr
:
number of steps engaged with faulty probe
. (0÷# oAi = cPr or StP).
PoPr
:
capacity engaged with faulty probe
(0÷255) It’s used only if CtyP=dPo.
FPr
:
Number of fans engaged with faulty probe
. (0÷# oAi = FAn)
Recovery
Automatic as soon as probe restarts working.
18.1.4 HA, LA, HA2, LA2High and low pressure (temperature) alarms
This alarm signals that the pressure (temperature) is out of limits established by parameters
LAL and HAL for compressors and LAF –HAF for fans.
The
tAo
and
AFd
parameters set the delay between alarm condition and alarm signalling.