FC 300 Instruction Manual
How to Install
" Electrical installation, control cables
Diagram showing
all electric al terminals. Terminal 37 i s not included in FC 301.
Very long con
trol cables and analog signals may in rare cases and depending on installation result
in 50/60 Hz ground loops due to noise from electrical supply cables.
If this occurs, you may have to break the screen or insert a 100 nF capacitor betwe en screen and chassis.
The digital and analog in- and outputs must be connected separately to the FC 300 common
inputs (terminal 20, 55, 39) to avoid ground currents from both groups affecting other groups. For
example
, switching on the digital input may disturb the analog input signal.
22
MG.33.A4.22 - VLT is a registered Danfoss trademark
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