Operating instructions
cod. 1592001300
1592001300 XC440C gb r1.0 07.06.2004.doc
rel. 1.0
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LSE: Minimum set point: The measurement unit depends on dEU parameter. It sets the
minimum value that can be used for the set point, to prevent the end user from setting
incorrect values.
HSE: Maximum set point: The measurement unit depends on dEU parameter. It sets the
maximum acceptable value for set point.
12.6 Fans regulation
Pb
Proportional band zone width (00.10÷5.00bar/0.5÷30°C or 1÷80PSI/1÷50°F).
Set the dEU par. and the target set point for fans before setting this parameter. The
band is symmetrical compared to the target set point, with extremes: set+Pb/2 ... set-
Pb/2. The measurement unit depends on the dEU par.
ESF Energy saving value for fans: (-20÷20bar; -50÷50°C) this value is add to the fans set
point.
Fon: Time delay between the insertion of two different fans (0÷255sec).
FoF: Time delay between switching off of two different compressors (0÷255 sec)
LSF: Minimum set point for fans: The measurement unit depends on dEU parameter. It sets
the minimum value that can be used for the set point, to prevent the end user from
setting incorrect values.
HSF: Maximum set point for fans: The measurement unit depends on dEU parameter. It sets
the maximum acceptable value for set point.
12.7 Alarms – compressor section
PAo: Alarm probe exclusion at power on. it is the period starting from instrument switch on,
before an alarm probe is signalled. (0÷255 min). During this time if the pressure is out of
range all the compressor are switched on.
LAL: Low pressure (temperature) alarm – compressor section: The measurement unit
depends on dEU parameter. It’s always subtracted to the set point. When the value SET-
LAL is reached the A03C alarm is enabled, (possibly after the tAo delay time).
HAL: High pressure (temperature) alarm– compressor section: The measurement unit
depends on dEU parameter. It’s always added to the set point. When the value
SET+HAL is reached the A04C alarm is enabled, (possibly after the tAo delay time).
tAo: Low and High pressure (temperature) alarms delay– compressor section: (0÷255
min) time interval between the detection of a pressure (temperature) alarm condition and
alarm signalling.
Ser: Service request: (1÷9990 hours, res. 10h) number of running hours after that the “A14”
maintenance call is generated.
SPr: number of steps engaged with faulty probe. (0÷#compr).
PoPr capacity engaged with faulty probe (0÷100%) It’s used only if CtyP=dPo.
12.8 Alarms – fans section
LAF: Low pressure alarm – fans section: The measurement unit depends on the dEU
parameter. It’s always referred to fan set point When the value SETF-LAF is reached the
LA2 alarm is enabled, (possibly after the AFd delay time).
