CT-600-2
63
AI no.
CN
Rating
Connection
Comment
sensor can only measure actual discharge pressure
when running and not at standstill.
AI 9
CN13 PT1000
Process
temperature
Optional signal from a process temperature sensor (not
delivered by BITZER). This signal must be connected
when the operating mode is “auto” and the regulator type
is “cold brine”. It is recommended to mount the
temperature sensor in the brine-outlet connection of the
evaporator, when used for capacity control.
AI 10
CN13 PT1000
Auxilary
temperature
Optional signal from an auxiliary temperature sensor (not
delivered by BITZER). The temperature signal is
recorded by the ACP LINK but no further functionality
related to this sensor is implemented yet.
AI 11
CN13 0-10V
Remote
setpoint 1 /
common
Signal from plant to the ACP LINK for remote control of
the capacity setpoint for the complete ACP unit (when
used with operating mode “Remote”) or for compressor
no. 1 only (when used with operating mode “Remote
individual”).
AI 12
CN13 0-10V
Remote
setpoint 3
Signal from plant to the ACP LINK for remote control of
the capacity setpoint for compressor no. 3. Only used
with operating mode “Remote individual”.
Also used as signal for
external capacity limiter
in
operating mode auto. When the signal is above 2V, the
external limiter wll be enabled (running in auto mode).
The amount of limitation is scaled linearly: 2V equals 0%
reduction and 10V equals 100% reduction of the
capacity setpoint.
