74
CT-600-2
No.
Function
Description
Related
alarms,
warnings
(see 14.1)
Related
param.
(see 13.1)
Related
timers
(see 13.2)
2.38 PID regulator
error
A warning is issued when the internal
PID regulator has an error and the
regulation mode is "auto". This error
can only be reset by power cycling the
PLC.
66
2.39 Start priority
zero
A warning is issued when the start
priority of the compressor is zero.
191, 192,
193
0.3
2.40
Capacity
request too low
A warning is issued when the requested
capacity is lower than the minimum
capacity to start the first compressor.
27
97
2.41
Compressor oil
filter pressure
drop high
A warning is issued when the pressure
drop over the oil filter in the oil line to
the OS.A95 compressor is too high.
The warning is surpressed during start
of each compressor and at start of first
compressor.
97, 98, 99 79
25, 36
2.42
External
capacity limiter
A warning is issued when the input
value on M172-AI12 is at least 20% (>
2V) and operating mode is auto.
28
12.4
Control functions
No.
Function
Description
Related
alarms,
warnings
(see 14.1)
Related
param.
(see 13.1)
Related
timers
(see 13.2)
3.1
Compressor
start
Control of start of compressor. CR
compressor starts fully unloaded (25%)
for a certain time. VSD compressor
starts fully unloaded (25%) and with
defined start-up speed for a certain
time.
131, 132,
133, 141,
142, 143,
181, 182,
183
1, 49, 60
32, 35
3.2
Compressor
stop
Control of stop of compressor.
Compressor is stopped when the
131, 132,
133, 141,
142, 143
43, 44,
50, 51
32, 33
