Safe Stop Commissioning Test - Danfoss FC 300 Design Manual

FC 300 Design Guide
sensor (such as emergency stop button, safety-guard switch, etc.) that activates safe stop. The
AND logic itself must conform to EN 954-1, Safety Category 3. The connection from the output of
the safe AND logic to safe stop terminal 37 must be short-circuit protected. See figure below:
3.7: Illustration of the essential aspects for installing a combination of a safe stop application and an MCB112
application. The diagram shows a Restart input for the external Safety Device. This means that in this in-
stallation parameter 5-19 might be set to value [7] or [8].
Parameter settings for safe stop in com-
bination with MCB112
If MCB112 is connected, then additional settings are possible for parameter 5-19: [1] (default)
and [3] are still available, but should not be set. They must be set if only safe stop is used. If [1]
or [3] are chosen and MCB112 is triggered, then the FC300 will react with an alarm "Dangerous
Failure [A72]" and stop the drive safely, without an automatic restart. [4] and [5] are then avail-
able, but should not be used. They must be used if only MCB112 is connected, and no other safety-
related sensor. If [4] or [5] are chosen and safe stop is activated, then the FC300 will react with
an alarm "Dangerous Failure [A72]" and stop the drive safely, without an automatic restart.
Choices [6], [7], [8] or [9] must be used for combination of safe stop and MCB112. IMPORTANT!
Choices [7] or [8] set safe stop to automatic restart.
This is only allowed in one of following two situations:
1.
2.

3.11.4. Safe Stop Commissioning Test

After installation and before first operation, perform a commissioning test of an installation or
application making use of FC 300 Safe Stop.
Moreover, perform the test after each modification of the installation or application, which the FC
300 Safe Stop is part of.
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 ® is a registered Danfoss trademark.
3. Introduction to FC 300
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