Safe Stop Installation - Fc 302 Only (And Fc 301 In Frame Size A1); It Mains - Danfoss VLT AutomationDrive FC 300 Operating Instructions Manual

2 Safety Instructions and General Warning

2.1.7 Safe Stop Installation - FC 302 only (and FC 301 in frame size A1)

To carry out an installation of a Category 0 Stop (EN60204) in
conformance with Safety Category 3 (EN954-1), follow these
instructions:
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1. The bridge (jumper) between Terminal 37 and 24 V DC must be
removed. Cutting or breaking the jumper is not sufficient. Re-
move it entirely to avoid short-circuiting. See jumper on illus-
tration.
2. Connect terminal 37 to 24 V DC by a short-circuit protected ca-
ble. The 24 V DC voltage supply must be interruptible by an
EN954-1 Category 3 circuit interrupt device. If the interrupt de-
vice and the frequency converter are placed in the same instal-
lation panel, you can use a regular cable instead of a protected
one.
3. The Safe Stop function only fulfills EN 954-1 Category 3 if it is
protected by an enclosure with protection class IP 54 or higher.
Therefore, FC 302s, with a protection class lower than IP54,
must be mounted inside a housing (cabinet) that provides IP54
protection. FC 302s with protection class IP54 or higher need no
further protection. FC 302 A1 is only delivered with an IP21 en-
closure and must therefore always be mounted in a cabinet.
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.
Illustration 2.2: Illustration of the essential aspects of an installation to achieve a Stopping Category 0 (EN 60204-1) with safety Category 3 (EN 954-1).

2.1.8 IT Mains

RFI Filter
par. 14-50 can be used to disconnect the internal RFI capacitors from the RFI filter to ground in the 380 - 500 V frequency converters. If this
is done it will reduce the RFI performance to A2 level. For the 525 - 690 V frequency converters, par. 14-50
cannot be opened.
10
Illustration 2.1: Bridge jumper between terminal 37 and 24 VDC
MG.33.AC.02 - VLT is a registered Danfoss trademark
®
VLT AutomationDrive FC 300 Operating
RFI Filter
has no function. The RFI switch
Instructions