Bitzer ACP Link - Page 75

CT-600-2 75
No. Function Description Related
alarms,
warnings
(see 14.1)
Related
param.
(see 13.1)
Related
timers
(see 13.2)
required capacity is below 1/3 of the
minimum capacity of the compressor.
3.3 Compressor
capacity
loading/unloadin
g
Control of correct loading and unloading
of the compressor, taking into account
regulation (CR/VSD), actual CR, actual
speed
131, 132,
133, 141,
142, 143
1, 43, 44,
46, 50,
51, 52
3.4 Capacity
regulation mode
selection
Selection of the regulation mode
(stopped, manual, auto, remote, remote
individual, service). The capacity
change rate is limited.
1, 4, 5,
21, 23,
24, 34, 39
3, 97
3.5 Capacity
distribution
compressors
Distribution of the required capacity
setpoint (depending on regulation
mode) over the available compressors.
The distribution tries to meet the
required capacity as close as possible
with the available compressors taking
into account several factors: best
possible efficiency, compressor
regulation type (CR/VSD), equalizing
running hours, start priority, ready
status. The first compressor to start will
require that the requested capacity is
1/3 above the minimum capacity of the
ACP. The last compressor will only stop
when the requested capacity is below
1/3 of the minimum capacity of the
ACP.
131, 132,
133, 141,
142, 143,
181, 182,
183, 191,
192, 193
0.3, 43,
44, 46,
49-52
3.6 Capacity limiter
- total
Capacity set point is limited in case of
certain warnings (low suction pressure,
high discharge pressure, high pressure
ratio, module power high, oil separator
load high, process temperature low). In
case of external capacity limiter, the
capacity setpoint is reduced by the
linear scaled value of the input M172-
1, 4, 5,
21, 23,
24, 28, 39
4 14