Safe Stop Of Fc - Danfoss VLT AutomationDrive FC 300 Design Manual

3. Introduction to FC 300
If the overload is excessive, a current may occur that makes the frequency converter cut out after
approx. 5-10 s.
Operation within the torque limit is limited in time (0-60 s) in par. 14-25.
3.10.1. Motor Thermal Protection
3
The motor temperature is calculated on the basis of motor current, output frequency, and time
or thermistor. See par. 1-90 in the Programming Guide.

3.11.1. Safe Stop of FC 300

The FC 302, and also the FC301 in A1 enclosure, can perform the safety function
Off
(As defined by IEC 61800-5-2) or
FC 301 A1 enclosure: When Safe Stop is included in the drive, position 18 of Type Code must be
either T or U. If position 18 is B or X, Safe Stop Terminal 37 is not included!
Example:
Type Code for FC 301 A1 with Safe Stop: FC-301PK75T4Z20H4TGCXXXSXXXXA0BXCXXXXD0
It is designed and approved suitable for the requirements of Safety Category 3 in EN 954-1. This
functionality is called Safe Stop. Prior to integration and use of Safe Stop in an installation, a
thorough risk analysis on the installation must be carried out in order to determine whether the
Safe Stop functionality and safety category are appropriate and sufficient.
Activation and Termination of Safe Stop
The Safe Stop function is activated by switching off the 24Vdcv supply to the Terminal 37. By
default the Safe Stop functions is set to an Unintended Restart Prevention behaviour. This means,
in order to terminate Safe Stop and resume normal operation, first the 24Vdc must be reapplied
to Terminal 37. Subsequently, a reset signal must be given (via Bus, Digital I/O, or [Reset] key).
50
Stop Category 0
(as defined in EN 60204-1).
MG.33.B9.02 - VLT ® is a registered Danfoss trademark
FC 300 Design Guide
Safe Torque