Danfoss ADAP-KOOL AK-LM 340, User Manual

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AK-LM 340 RS8GV202 © Danfoss 2016-06 41
Supply voltage
Supply voltage is only connected to the controller module. The
supply to the other modules is transmitted via the plug between
the modules. The supply must be 24 V +/-20%. One transformer
must be used for each controller. The power supply must be a
class II. The 24 V must
not
be shared by other controllers or units.
The analog inputs and outputs are not galvanically separated
from the supply.
The + and – 24V input
must not
be earthed.
Power supply size
The power consumption grows with the number of modules used:
Module Type Number á Effect
Controller 1 x 8 = 8 VA
Extension module 200-series _ x 5 = __ VA
Extension module 100-series _ x 2 = __ VA
Total ___ VA
12
Example continued:
Controller module 8 VA
------
Power supply size (least) 8 VA
Common pressure transmitter
If several controllers receive a signal from the same pressure trans-
mitter, the supply to the affected controllers must be wired so that
it is not possible to switch off one of the controllers without also
switching off the others. (If one controller is switched off, the sig-
nal will be pulled down, and all the other controllers will receive a
signal which is too low)