148 EN/06.2019/G57 © STULZ GmbH – all rights reserved
C7000 INSTRUCTIONS fOR a/C UNITS
6.11 ACT - Adaptive Cooling Technology
Commands:
enables ACT function
sets control mode in normal operation
(in the example: control according to room air)
sets time interval for communication monitoring (in
seconds)
Using the ACT, the temperature setpoint will be provided by the BMS. The connection to the BMS is moni-
tored. In case of a connection error an emergency operation is activated after an adjustable time has elapsed.
There are two operating modes: normal operation and emergency operation.
Normal operation
Normal operation is activated as soon as the C7000IOC receives a temperature setpoint from the BMS and
remains active as long as it receives a temperature setpoint within the adjusted time interval (command: act
time <1..255>).
The control mode is set by the BMS or can be adjusted at the C7000 controller (command: act control
<1..4>). The control mode adjusted in the C7000IOC, which is active at ACT activation, is not taken.
If the C7000IOC receives a temperature setpoint from the BMS, without that the control mode has been set,
the temperature is controlled according to the return air temperature.
Emergency operation
If the C7000IOC does not receive any temperature setpoint within the adjusted time interval from the BMS
and if the A/C unit is in normal operation, the controller changes into emergency operation.
Emergency operation is active right after switching on the C7000IOC. It will be quit as soon as the C7000IOC
receives a temperature setpoint by the BMS.
In emergency operation the air is conditioned according to the control mode and temperature setpoint which
are set in the C7000IOC.
option 6 1
act control 1
act time 60
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