07-02-12-02-EN-V1215.doc / Type: 638
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● Safety Instructions and Limitations
No Galvanic Separation of the Outputs
The galavanic separation does not occur through the starting lockout function. This
therefore does not in any way provide protection against an “electrical spike”.
For operation interruptions, maintenance, service and cleaning of the equipment, the
entire system must be definitively and galvanically separated from the power supply
at the main switch box and confirmation should be made that the system can not
restart (See EN 60204-1;5.3).
Potential Sudden Jerking or Movement under Fault Condition
In the event that two fault conditions appear at the same time in the power unit, it is
possible that unit may exhibit a sudden jerking or movement within a small angle of
rotation. This is dependent upon the number of pole pairs of the motor.
(Rotary Type:2-pole = 180°, 4-pole = 90°, 6-pole = 60°, 8-pole = 45°;
Linear Motors: 180° electric).
Malfunction during the Active Braking Phase with Stop Category 1; EN 60204-1
(controlled stop with reliable monitored time delay)
If a fault in the drive system occurs during the active braking phase, the axel can
coast to a stop, uncontrolled or in the worst case continue to operate until the
expiration of the predetermined shut-off time.
Hanging Loads or Influencing External Forces
In the event of a power failure the hanging loads can possibly fall in an uncontrolled
manner endangering people or equipment. The operation of hanging axes therefore
requires special attention relating to risk analysis and mitigation with hanging loads.
Not for Use in Drive Applications in Field Weakening Operation Ranges!
With motors which are employed in field weakening operation ranges, it is important
to note that the operation of the STO function can be adversely affected, specifically
involving an uncontrolled increase in rotational speed, life threatening over voltage
and explosion of the drive unit!
Minimal request of safety function
The safety function STO must activate for at least weekly.
Acknowledgement
The configurable acknowledgement is only permissible with category B.
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