GE AF-650 GP Design Manual page 51

1. Activate the Safe Stop function by removing the 24 V DC voltage supply to the terminal 37.
2. After activation of Safe Stop (i.e. after the response time), the frequency converter coasts (stops creating a rotational field in the motor). The response
time is shorter than 10 ms for the complete performance range of AF-650 GP. For AF-650 GP up to 7.5 kW it is even shorter than 5 ms.
The frequency converter is guaranteed not to restart creation of a rotational field by an internal fault (in accordance with Cat. 3 of EN 954-1). After activation of
Safe Stop, the AF-650 GP display will show the text Safe Stop activated. The associated help text says "Safe Stop has been activated. This means that the Safe
Stop has been activated, or that normal operation has not been resumed yet after Safe Stop activation.
3
NB!
The requirements of Cat. 3 (EN 954-1) / PL "d" (ISO 13849-1) are only fulfilled while 24 V DC supply to terminal 37 is kept removed or low by a safety device which
itself fulfills Cat. 3 (EN 954-1) / PL "d" (ISO 13849-1).
In order to resume operation after activation of Safe Stop, first 24 V DC voltage must be reapplied to terminal 37 (text Safe Stop activated is still displayed), second
a Reset signal must be created (via bus, Digital I/O, or [Reset] key on inverter).
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).
The Safe Stop function can be set to an Automatic Restart behaviour by setting the value of par. E-07 Terminal 37 Safe Stop from default value [1] to value [3].
Automatic Restart means that Safe Stop is terminated, and normal operation is resumed, as soon as the 24 V DC are applied to Terminal 37, no Reset signal is
required.
IMPORTANT! Automatic Restart Behaviour is only allowed in one of the two situations:
1. The Unintended Restart Prevention is implemented by other parts of the Safe Stop installation.
2. A presence in the dangerous zone can be physically excluded when Safe Stop is not activated. In particular, the following paragraphs of standards under
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).
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AF-650 GP Design Guide