Safe Stop Of Fc 302; It Line - Danfoss FC 300 Instruction Manual

FC 300 Instruction Manual

Safe Stop of FC 302

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The FC 302 can perform the Designated Safety Function Uncontrolled Stopping by removal of power. (as
defined by draft IEC 61800-5-2) or Stop Category 0 (as defined in EN 60204-1). It is designed and approved
suitable for the requirements of Safety Category 3 in EN 954-1. This functionality is called Safe Stop.
In order to install and use the Safe Stop function in accordance with the requirements of Safety
Category 3 in EN 954-1, the related information and instructions of the FC 300 Design Guide
MG.33.BX.YY must be followed! The information and instructions of the Instruction Manual are
not sufficient for a correct and safe use of the Safe Stop functionality!
General warning
Warning:
Touching the electrical parts may be fatal - even after the equipment has been
disconnected from the power supply.
Also make sure that other voltage inputs have been disconnected, such as load-sharing (linkage
of DC intermediate circuit), as well as the motor connection for kinetic backup.
Using VLT AutomationDrive FC 300: wait at least 15 minutes.
A shorter time is allowed only if indicated on the nameplate for the specific unit.
Leakage Current
The ground leakage current from the FC 300 exceeds 3.5 mA. To ensure that the ground cable
has a good mechanical connection to the ground connection (terminal 95), the cable cross-section
must be at least 3.9 in2 [10 mm2] or have 2 rated ground wires terminated separately.
Residual Current Device
This product can cause DC current in the protective conductor. If a residual current device (RCD)
is used for extra protection, only an RCD of Type B (time delayed) may be used on the supply
side of this product. See also RCD Application Note MN.90.GX.02.
Protective grounding of the FC 300 and the use of RCDs must always follow national and local regulations.

IT Line

Do not connect 400 V adjustable frequency drives with RFI filters to line power supplies
with a voltage between phase and ground of more than 440 V.
For IT line and delta ground (grounded leg), line voltage may exceed
440 V between phase and ground.
Par. 14-50 RFI 1 can be used on the FC 302 to disconnect the internal RFI capacitors 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.A6.22 - VLT is a registered Danfoss trademark
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