Safe Stop Of The Fc - Danfoss FC 300 Design Manual

3. Introduction to FC 300

3.11.1. Safe Stop of the 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!
3
Example:
Type Code for FC 301 A1 with Safe Stop: FC-301PK75T4Z20H4TGCXXXSXXXXA0BXCXXXXD0
It is designed and deemed suitable for the requirements of Safety Category 3 in EN 954-1. This
function is called safe stop. Prior to integrating and using safe stop in an installation, a thorough
risk analysis must be carried out on the installation 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 24 V dcv supply to the Terminal 37. By
default, the safe stop function is set to unintended restart prevention behavior. This means that
in order to terminate the safe stop and resume normal operation, the 24 Vdc must first be reapplied
to Terminal 37. Subsequently, a reset signal must be given (via Bus, Digital I/O or [Reset] key).
The safe stop function can be set to automatic restart by setting the value of parameter 5-19 from
default value [1] to value [3]. If an MCB112 option is connected to the drive, automatic restart
behavior is set by values [7] and [8].
Automatic restart means that safe stop is terminated, and normal operation is resumed, as soon
as the 24 Vdc are reapplied to Terminal 37; no reset signal is required.
IMPORTANT! Automatic restart behavior is only allowed in one of the two following situations:
1.
2.
54
Unintended restart prevention is implemented by other parts of the safe stop installation.
A presence in the hazard zone can be physically excluded when safe stop is not activated.
In particular, the following standards paragraphs in the EU Machinery Directive must be
observed: 5.2.1, 5.2.2, and 5.2.3. of EN954-1:1996 (or ISO 13849-1:2006), 4.11.3 and
4.11.4 of EN292-2 (ISO 12100-2:2003).
MG.33.B9.22 - VLT
Stop Category 0
(as defined in EN 60204-1).
® is a registered Danfoss trademark.
FC 300 Design Guide
Safe Torque