Sequence And Procedure When Using The Start Inhibit - Siemens SIMODRIVE 611 Planning Manual

9 Important Circuit Information
9.5 Start inhibit in the drive modules
9.5.4
9
9-242
Notice
The start inhibit relay has maximum pull–in and drop–out delay times of 40 ms.
Any external wiring connected at terminals AS1/AS2 must be short–circuit
proof.

Sequence and procedure when using the start inhibit

The drives must be shut down before terminal 663 is inhibited and the drive
inhibit is activated.
The drives can be shutdown, e.g. by decelerating them in a controlled fashion
using the NC program, by inhibiting the drive enable terminal 64 or the axis–
specific controller enable terminal 65.
If a fault occurs when actuating the start inhibit, then this fault must be removed
before the mechanically isolating protective devices to the working zone of the
machine or plant are opened. After the fault has been removed, this procedure
must be repeated for the start inhibit. Under fault conditions, all of the drives,
machine and plant must be shut down.
If one of the following faults should occur with terminal 663 de–energized and
the protective devices withdrawn, then the EMERGENCY STOP must be imme-
diately initiated:
S
The acknowledgement contact AS1/AS2 remains open, the start inhibit is
not activated.
S
There is a fault in the external control circuit itself.
S
There is a fault in the signal lines of the acknowledge contact.
All of the drives associated with the machine/plant must be disconnected and
isolated from the line supply through the line contactor.
If the start inhibit control has been correctly integrated into the external safety–
related drive control and has been checked to ensure correct functioning, then
the drives in the separate working zone of the machine are protected against
undesirable starting, and personnel can enter or intervene in the hazardous
zone which has been defined.
Notice
The relevant regulations for setting–operation must be taken into account.
 Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
05.01