Function description
Operating Manual PNOZ m EF 1MM
1003108-EN-11
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Sequence with standstill limit value for automatic STO:
t
v
t
STO
Standstill limit value
1
2
t
3
t
t
Delay
t
STO
STO
Legend
t
1
:
Monitoring function SS1-M is activated
t
2
:
Standstill limit value for automatic STO reached, safety function "Safe
torque off" (STO) is activated
t
3
:
Delay time elapses
t
Delay
:
Set delay time for controlled braking of motor
t
STO
:
Actual time from activation of monitoring function until STO is activated
4.3.6
Safe stop 2 monitoring
The
Safe stop 2 monitoring
function (SS2-M) monitors
}
Whether the set delay time has expired (until controlled braking of the motor) or the
standstill limit value for automatic SOS is below the limit value.
and
}
Whether the stop position ultimately remains within a configured tolerance window.
Reaction:
}
If the monitoring function SS2-M is triggered, the "Braking ramp" output switches off. The
drive controller's braking ramp is activated.
}
If the set delay time has elapsed or the value for the automatic SOS is below the limit
value, the stop position is monitored, the
Position monitoring
output switches on. If the
stop position is outside the tolerance window, the
Position monitoring
and
STO
outputs
switch off, the safety function
Safe torque off
(STO) is activated.
A maximum of 1 SS2-M element can be configured per axis in the PNOZmulti Configurator.
Please note:
This monitoring function cannot be used in conjunction with 2 proximity switches because
position detection is not possible.
