Danfoss VLT Automation Drive FC 300 Operating Instructions Manual page 10

2. Safety Instructions and General Warning
2.1.7. Safe Stop Installation
To carry out an installation of a Category 0 Stop (EN60204) in conformity with Safety Category 3 (EN954-1), follow these instructions:
1. The bridge (jumper) between Terminal 37 and 24 V DC must be removed. Cutting or breaking the jumper is not sufficient. Remove it entirely
to avoid short-circuiting. See jumper on illustration.
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2. Connect terminal 37 to 24 V DC by a short-circuit protected cable. The 24 V DC voltage supply must be interruptible by an EN954-1 Category 3
circuit interrupt device. If the interrupt device and the frequency converter are placed in the same installation panel, you can use an unscreened
cable instead of a screened one.
Illustration 2.1: Bridge jumper between terminal 37 and 24 VDC
The illustration below shows a Stopping Category 0 (EN 60204-1) with safety Category 3 (EN 954-1). The circuit interrupt is caused by an opening door
contact. The illustration also shows how to connect a non-safety related hardware coast.
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MG.33.U2.02 - VLT ® is a registered Danfoss trademark
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VLT Automation Drive FC 300
Operating Instructions High Power