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BA492401-en
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1.11
Safety Features
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1.11.1
Locking Device
The locking device serves to prevent inadvertent lowering motions
caused by gear, load nut or lifting screw failure. The carriage is
blocked by safety wedge (1) and counterwedge (2).
1.11.2
Braking Motor
The motors are equipped with AC spring pressure brakes. Once
the motors are switched off, the brakes prevent any further
movements.
1.11.3
Phase Sequence Relay
The phase sequence relay in the power supply unit ensures safe
and independent operation.
1.11.4
Thermal Overload Protection
Overload protection via electronically monitored thermoswitches.
1.11.5
Safety Shutdown after Motor Overload
The motor load is permanently monitored by the control PCB. If an overload of
≥
15 % occurs, the system will switch off automatically. In this case the lift cannot
be raised any more, but it can be normally lowered to bottom position.
1.11.6
Warning and Information Labels
Do not change or remove the warning and information labels. Order replacement
for defective labels.
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