Safe Stop - Danfoss VLT Decentral Drive FCD 302 Operating Manual

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Installation
VLT Decentral Drive FCD 302
CAUTION
The USB connection is galvanically isolated from the
2 2
supply voltage (PELV) and other high-voltage terminals.
The USB connection is not galvanically isolated from
protection earth. Use only isolated laptop/PC as
connection to the USB connector on frequency converter
or an isolated USB cable/converter.

2.4.16 Safe Stop

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The VLT Decentral Drive FCD 302 provides safe stop
functionality via control terminal 37. Safe stop disables the
control voltage of the power semiconductors of the
frequency controller output stage. This in turn prevents
generating the voltage required to rotate the motor. When
the Safe Stop (T37) is activated, the frequency converter
issues an alarm, trips the unit, and coasts the motor to a
stop. Manual restart is required. The safe stop function can
be used for stopping the frequency converter in
emergency stop situations. In the normal operating mode
when safe stop is not required, use the regular stop
function of the frequency converter instead.
Illustration 2.27 Jumper between Terminal 13 and 37
26 Danfoss A/S © 05/2016 All rights reserved. MG04F402