Examples – Pilz PSS SB HYD, Basic license User Manual

Page 284

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Examples

Modular Block System: Hydraulic Presses

Safety gate monitoring with guard locking, automatic start and manual
restart, category 4

Block used: SB075/GRD_LCK

Cyclical function test on the gate:
The following application does not require a cyclical function test on the
gate.
However, if you need this requirement, the “Machine running” signal
should be assigned to the input parameter

MRun.

Set operating mode:
The following operating mode is set in this application:

ARSt = 0: Reset lock activated (manual restart)

The operator must acknowledge each opening of the safety gate
(input parameter

RSET).

NoFT = 1

No function test on the gate when the PSS is cold/warm started,
when the I/O-Group is started or each time the gate is unlocked

AuSt = 1

No start-up disabler (automatic start)

WARNING!
When a safety-related device provides a start or restart signal, the start or
restart shall take place automatically only if a hazardous situation cannot
exist (EN 954, 03/97).

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