1592001850 XC660D GB r3.4 04.09.2017.docx XC660D
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d2d
Digital input set as oA2 or Co2 activation delay
(0÷255s), This delay it is considered
when i1F or i2F or i3F or i4F or i5F or i6F or i7F or i8F is set as oA2 or Co2
d3d
Digital input set as oA3 or Co3 activation delay
(0÷255s), This delay it is considered
when i1F or i2F or i3F or i4F or i5F or i6F or i7F or i8F is set as oA3 or Co3
d4d
Digital input set as oA4 or Co4 activation delay
(0÷255s), This delay it is considered
when i1F or i2F or i3F or i4F or i5F or i6F or i7F or i8F is set as oA4 or Co4
d5d
Digital input set as oA5 or Co6 activation delay
(0÷255s), This delay it is considered
when i1F or i2F or i3F or i4F or i5F or i6F or i7F or i8F is set as oA5 or Co6
d6d
Digital input set as oA6 or Co6 activation delay
(0÷255s), This delay it is considered
when i1F or i2F or i3F or i4F or i5F or i6F or i7F or i8F is set as oA6 or Co6
did
Liquid level alarm, signaling delay
: (enabled only if a digital input is set as LL)
0÷255min
didA
External alarm, signaling delay
: (enabled only if a digital input is set as EAL) 0÷255min
ALMr Manual reset of alarms for compressors and fans.
no
= automatic recover of alarm: regulation restart when the correspondent digital input
is disabled;
yES
= manual recover for the alarms of compressors and fans See also
par.23.1.2
17.4 Display and Measurement unit
The measurement unit of the parameters referred to temperature or pressure depends on the
parameters dEU, CF and PMu.
NOTE
: The controller automatically converts values of set points and parameters referred to the
pressure/temperature when the dEU parameter is changed. In any case check the value of the
parameters referred to temperature and pressure after changing dEU.
dEU
:
Selection of the kind of measurement unit: pressure or temperature
dEU = tMP:
the parameters referred to pressure/temperature will be expressed in
temperature according to the value of the CF parameter (°C or °F)
dEU = PrS:
the parameters referred to pressure/temperature will be expressed in
pressure according to the value of the PMU parameter (bar, PSI or KPA)
CF
Measurement unit for temperature:
it is used only with dEU = tMP, and it set the
measurement unit for parameters referred to temperature/pressure.
°C =
Celsius degree
°F =
Fahrenheit degree
PMU
Measurement unit for pressure:
it is used only with dEU = PrS, and it set the
measurement unit for parameters referred to temperature/pressure.
bar =
bar
PSI = PSI
PA = kPA
rES
Resolution for °C and bar
(
in
= integer;
dE
= decimal point)
dEU1 Default visualization for upper display: PrS
= Pressure;
tPr
= temperature
dSP2 Probe selection for lower display: nu =
display switched off
- P1 =
Probe 1
- P2 =
Probe
2
- P3 =
Probe 3
- P4 =
Probe 4
- StC1 =
Compressor Set
Point
- StC2 =
Compressor set
point for section 2
– SetF =
Fan set point
dEU2 Default visualization for lower display:
tPr
= temperature,
PrS
= Pressure;
17.5 Compressor regulation
Pbd
Proportional band or neutral zone width
(0.1÷5.0bar/0.5÷30°C or 1÷150PSI/1÷50°F)
The band (or zone) is symmetrical compared to the target set point, with extremes: set-
Pbd/2 ÷ set+Pbd/2. It is used as proportional band for PI algorithm.
The measurement unit depends on the dEU, CF, PMU par.
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