Danfoss VLT AutomationDrive FC 301 Programming Manual page 12

Introduction
1 1
To avoid ground currents from both groups to affect other groups, connect the digital and analog inputs and outputs
separately to the common inputs (terminals 20, 55, and 39) of the frequency converter. For example, switching on the digital
input may disturb the analog input signal.
Input polarity of control terminals
12 13 18
Illustration 1.3 PNP (Source)
12 13 18
Illustration 1.4 NPN (Sink)
NOTICE
Control cables must be shielded/armored.
See the section Grounding of Shielded Control Cables in the
design guide for the correct termination of control cables.
10
VLT
PNP (Source)
Digital input wiring
19 27 29 32 33
NPN (Sink)
Digital input wiring
19 27 29 32 33
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AutomationDrive FC 301/302
20 37
Illustration 1.5 Grounding of Shielded/Armored Control Cables
20 37
1.5.1 Start/Stop
Terminal 18 = Parameter 5-10 Terminal 18 Digital Input [8]
Start.
Terminal 27 = Parameter 5-12 Terminal 27 Digital Input [0]
No operation (Default [2] Coast inverse).
Terminal 37 = Safe Torque Off (where available).
Speed
Start/Stop
[18]
Illustration 1.6 Start/Stop
12 13 18 19 27 29 32 33 20 37
Start/Stop Safe Stop
M0013101