Safe stop
Instruction handbook b maXX BM4400, BM4600, BM4700
Document No.: 5.12008.07
345
of 358
E
or if S2 and S3 show the same switch state). A missing enable signal of the monitoring device
leads to a direct switching off of the converter by means of the control circuit. If the monitoring
circuit detected an error (for example different switch state of S1 and S2), this is displayed
and the commissioning of the drive is not possible until the error has to the operator and a
commissioning of the drive is not possible until the error is corrected.
n The position switches, which are used, must provide positively operated and mechanical con-
tacts. The position switches must provide a dual-protected connection (a combination of NC
contacts and of NO contacts). The mechanical operation at the safety device must be tamper-
resistant.
The connection cables between the safety relay inputs (X102-3/4; X103-3/4) as well as between
the pulse enable input (X3-5) and the control circuit may not be installed in a common cable
channel outside the control cabinet.
All information given in the instruction handbook of the converter, especially the chapters safety
instructions, installation and commissioning, must be complied with.
For the use and the installation of the safety devices the relevant legal and official requirements
of the Safety Authorities and of the EU Directives for safety-related requirements at installations
and machines (for example EN 60204-1, Safety of machinery - Electrical equipment of ma-
chines - Part 1: General requirements
and EN 292-2, Safety of machinery; basic concepts and
general principles for design; technical principles and specifications.
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