F
Operating instructions
cod. 1592001330
1592001330 XC642C GB r1.0 07.06.2004.doc
rel. 1.0
Pa. 17 / 21
the label A12 is shown on the upper display, while the lower display signals what wrong setting has created
the error:
The following table contains the displayed messages:
Mess.
Errata
Corrige
nLod
Number of loads higher than
loads available in the controller
•
Check number of oAi set as load, this number
has to be lower of equal to the 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
AOP2
P2 probe not available for the
4÷20mA output
•
P2 probe not available P2P =no. Enable the
probe setting: P2P =yES
•
The second probe P2 is used to control the
temperature of the engine of screw
compressors. Check CtyP and set it different
from Scr.
dSP2
P2 probe not available for the
dynamic set point function
•
P2 probe not available P2P =no. Enable the
probe setting: P2P =yES
•
The second probe P2 is used to control the
temperature of the engine of screw
compressors. Check CtyP and set it different
from Scr.
CSP2
P2 probe not available for screw
compressor
•
Check CtyP and set it different from Scr.
P2CF
Wrong second probe
configuration (EI.: If Cty= Scr P2
ha to be PTC)
•
Set P2P = yES and PbC2 = PTC
20.1.2
E0H, E0L Pressure switch alarm, suction and condensing sections
Terminals
Low pressure switch input: 9-10, high pressure switch input: HP.
Parameters
SEP: Low pressure switch polarity:
It establishes if the input is activated by closing (SEP=cL) or by
opening (SEP=oP) the terminals.
HPP: High pressure switch polarity:
It establishes if the input is activated by closing (HPP=cL) or by
opening (HPP=oP) 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.
20.1.3
EA1÷EA4: Compressors safeties alarm
Terminals
WARNING: THESE TERMINALS REQUIRE A FREE OF VOLTAGE CONNECTION.
The terminals (from 10, 11, 12, 13, 14+ ID5) 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.
