Danfoss VLT AutomationDrive FC 360 Programming Manual page 10

Introduction
1 1
3) Single DC choke in J1–J5; Dual DC choke in J6–J7.
4) Switch S801 (bus terminal) can be used to enable termination on the RS485 port (terminals 68 and 69).
5) No BR for J6–J7.
In rare cases, long control cables and analog signals could
result in 50/60 Hz ground loops due to noise from mains
supply cables. If this occurs, break the shield or insert a
100 nF capacitor between shield and chassis.
The digital and analog inputs and outputs must be
connected separately to the common inputs (terminal 20
and 55) of the frequency converter to avoid ground
currents from both groups to affect other groups. For
example, switching on the digital input could disturb the
analog input signal.
Input polarity of control terminals
12 13
Illustration 1.3 PNP (Source)
8
VLT
PNP (Source)
Digital input wiring
18 19 27 29 32 33
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®
AutomationDrive FC 360
12 18
55
Illustration 1.4 NPN (Sink)
NOTICE
Control cables must be shielded/armored.
See the section Using Shielded Control Cables in the design
guide for the correct termination of control cables.
Illustration 1.5 Grounding of Shielded/Armored Control Cables
NPN (Sink)
Digital input wiring
19 27 29 31 32 33 55
MG06C702