SEW-Eurodrive MOVISAFE DCS21B

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Manual – MOVIDRIVE® MDX61B Safety Module Option MOVISAFE® DCS..B
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Safety functions
Integrated Safety Technology
3.2.6 SOS – Safe Operating Stop
The SOS function prevents the motor from deviating from the stop position by more than
a specified value. The drive inverter delivers the power to keep the motor in position. If
the specified value is exceeded, the safety function will be disabled and an error re-
sponse (usually STO or SS1) will be triggered.
3.2.7 SLA – Safely Limited Acceleration
The SLA function prevents a movement from exceeding a specified acceleration value.
If the permitted acceleration limit is exceeded, the safety function will be disabled and
an error response will be triggered (usually STO or SS1).
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Safety function monitors
Safety function trips
v=Velocity
t=Time
t
1
= Point of time when SOS is triggered
t
2
= Point of time when SOS is deactivated
t
1
t
2
t
V
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Safety function monitors
Safety function trips
v=Velocity
t=Time
t
1
= Point of time when SLA is activated
t
2
= Point of time when SLA is deactivated
t
1
t
2
t
V
P
i
f
kVA
Hz
n