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Mess.
CPr Circuit
conFiG Error
AO1 And AO2
SAME
Function
no Probe For
SH
23.1.2 E01L, E02L Electronic Pressure switch alarm, suction 1 and 2
sections
Parameters
ELP (2ELP): Electronic pressure switch threshold, section 1 (and 2): (-50°C÷SETC; -
58°F÷SETC; PA04÷SETC); Pressure / Temperature value at which all the compressors are
switched off. It has to be set some degrees above the mechanical low pressure switch value, in
order to prevent mechanical low pressure activation.
Actions
Electronic low pressure: every time the suction temperature/pressure is less than ELP value all
the compressors are switched off. The instrument restarts the standard operating mode when
pressure/ temperature increases.
23.1.3 E0H1, E0L1, Pressure switch alarm, suction 1, and condensing
sections
Terminals
Low pressure switch 1 input: 9-10, high pressure switch input:
Parameters
iP05: Low pressure switch polarity: It establishes if the input is activated by giving (iP05=cL)
or by removing (iP05=oP) main voltage to the terminals.
iP06: High pressure switch polarity: It establishes if the input is by giving (iP06=cL) or by
removing (iP06=oP) main voltage to the terminals.
Actions
Low pressure: every time the inputs are activated all the compressors are switched off. The
instrument restart the standard operating mode when the input is disabled. If there are PEn
activation in the PEi time, only manual resetting is allowed, by pressing the DOWN key for 3s or
by turning off and on the instrument.
High pressure: every time the inputs are activated all the compressors are switched off and fans
are switched on. The instrument restart the standard operating mode when the input is disabled.
If there are PnF activation in the PiF time, only manual resetting is allowed, by pressing the DOWN
key for 3s or by turning off and on the instrument.
23.1.4 E0L2, Pressure switch alarm, suction 2
Terminals
WARNING: THESE TERMINALS FREE VOLTAGE CONNECTION
Set iF07 as low pressure switch 2 input: 33-34
1592001431 XC650CX GB r3.5 21.07.2020
Errata
The kind of outputs are
not compatible with the 2
suction circuits
AoF and 2AoF have the
same setting
One relay is set as hot
gas injection valve (oA2
or oA3 or oA4 = HGi), but
the probe to detected th
superheat is missed:
ASH9 = nP
Corrige
•
Check parameters oA(i) , CtyP and
set CtyP different from Scr.
•
Set AoF and 2AoF properly.
•
Set a probe to detect the superheat by
the parameter ASH9 = P3 or P4.
•
If the hot gas injection valve is not
present, set oA2 or oA3 or oA4
different from HGi.
[31-32].
XC650CX
44/56
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