Pilz PSS SB HYD, Basic license - Manual (Page 170)

6-108 Modular Block System: Hydraulic Presses
Standard Function Blocks
INFORMATION
The purpose of synchronisation time monitoring is to detect
mechanical errors on the gate switches when the gate closes.
The synchronisation time should be set to a time within which
the signals from the gate switches should both supply a 1-
signal when closing. If this time is exceeded, it is an indication
that the gate switches are no longer switching synchronously
when closing, due to mechanical reasons.
• MRun: Machine is running
MRun = 0: Machine is still
MRun = 1: Machine is running
MRun = 1/0 pulse edge: Function test must be performed.
This parameter can force the operator to carry out a function
test of the gate (gate open/closed). With a 1/0 pulse edge, the
enable is reset and a function test must be performed.
• STPD: Hazardous machine functions are stopped.
STPD = 0: Hazardous machine functions are not stopped
STPD = 1: Hazardous machine functions are stopped.
WARNING!
The signal ‘Hazardous machine functions are stopped’ ( STPD)
must be formed safely. It must correspond to the category of
the safety device. This can be guaranteed by checking the 2
signals from 2 diverse standstill monitors for feasibility, for
example. This feasibility check can be performed using the
approved block SB063 E-STOP, for example.
• RQST: Request to open/lock the gate.
RQST = 0: No request
RQST = 1: Request to open/lock the gate
• ARSt: Automatic restart/reset lock
ARSt = 0: Reset lock (reset is required)
ARSt = 1: Automatic restart/no reset lock
(see also under “Operating modes”)
SB075