76 CT-600-2
No. Function Description Related
alarms,
warnings
(see 14.1)
Related
param.
(see 13.1)
Related
timers
(see 13.2)
AI12 (20% input corresponds to 0%
reduction and 100% input corresponds
to 100% reduction, in operating mode
“auto” only).
3.7 Capacity limiter
- CR only
Slide valve position (CR) is limited in
case of certain warnings (high suction
pressure, low differential pressure, low
lubricating pressure, high motor current)
2, 6, 7,
40, 151,
152, 153
1, 43-45,
47, 48,
50-52, 60
3.8 PID regulator PID regulator function for regulation
mode auto. Four regulators, each with
two set points. Set point can be
changed with digital external signal.
Regulators are for suction pressure,
cold brine (both cooling mode),
discharge pressure and hot water (both
heating mode).
66 88-137
3.9 External output
shutdown and
ready signal
External digital output for "shutdown" is
set, when all compressors have an
active alarm and cannot operate. The
external output is fail safe (high = no
shutdown).
External digital output for "ready for
operation" is set, when at least one
compressor is ready for operation (or
running).
"all"
3.10 External output
alarm signal
External digital output for "alarm" is set,
when at least one alarm is active (any
kind). The external output is fail safe
(high = no alarms).
"all"
3.11 External output
running signal
External digital output for "running" is
set, when at least one compressor is
running.
3.12 Start permission
HP-LP
For booster systems only. External
digital output for "start permission HP
LP" is set, when at least one
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