Safe Stop Installation (Fc 302 And Fc 301 - A1 Enclosure Only); It Mains - Danfoss FC 300 Operating Instruction

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FC 300 Operating Instructions

Safe Stop Installation (FC 302 and FC

301 - A1 enclosure only)

To carry out an installation of a Category 0 Stop

(EN60204) in conformance with Safety Category

3 (EN954-1), follow these instructions:

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.

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 a regular

cable instead of a protected one.

The illustration below shows a Stopping Category 0 (EN 60204-1) with safety Cat. 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.

Illustration of the essential aspects of an installation to achieve a Stopping Category 0 (EN

60204-1) with safety Cat. 3 (EN 954-1).

Do not connect 400 V frequency converters with RFI-filters to mains supplies with a

voltage between phase and earth of more than 440 V.

For IT mains and delta earth (grounded leg), mains voltage may ex-

ceed 440 V between phase and earth.

Par. 14-50 RFI 1 can on FC 302 be used to disconnect the internal RFI capacitiors from the RFI

filter to ground. If this is done it will reduce the RFI performance to A2 level.

Safety Instructions and General Warning

MG.33.A7.02 - VLT is a registered Danfoss trademark

Bridge jumper between terminal 37 and 24 VDC

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