9
05.01
9.5 Start inhibit in the drive modules
9-243
Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
9.5.5 Checking the start inhibit
The following checks must always be made at the first start–up and when
possible must be repeated at certain intervals during the operating lifetime.
A check should also be made after longer production standstills. Each individual
drive as well as the NE module must be checked.
The check must be made by qualified personnel taking into account the
necessary safety measures:
S The drive pulses must be inhibited by withdrawing the voltage at terminal
663. Furthermore, the acknowledge contact AS1/AS2 of the start inhibit
must close. The drive then coasts down.
S Disabling the protective devices, e.g. opening the protective doors while the
drive is running. The drive must be braked as quickly as possible and then
powered down. This must not result in a hazardous condition.
S All possible fault situations, which could occur, must be individually
simulated in the signal lines between the acknowledge contacts and the
external control as well as the signal evaluation functions of this control e.g.
by disconnecting the start inhibit monitoring circuit at terminals AS1–AS2.
S The monitoring circuit AS1 – AS2 must be disconnected.
For all of the simulated fault situations, the line contactor must disconnected
all of the machine or plant drives from the line supply.
If there is a connection between the power supply NE or monitoring module,
terminal 500/M500 to the power DC link P600/M500, this must be safely and
reliably disconnected at the same time with the line contactor, e.g. using
contactors.
9 Important Circuit Information
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