Kendrion 76 14P10B00, Руководство по эксплуатации

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Kendrion Binder Magnete GmbH Operating Instructions 76 ..P..B00 Last updated: 30 Dec. 2009 Page 22
7. Troubleshooting
Fault Cause Corrective actions
Brake release failure
•
Air gap too large
Check the air gap. Install a new friction disc, if necessary.
•
No voltage applied to brake
Check the electrical connection and correct faults, if found.
•
Voltage applied to field coil too low
Check the field coil supply voltage and correct faults, if found.
•
Armature plate blocked mechanically
Eliminate mechanical blocks.
•
Damaged rectifier
Check the rectifier and replace it, if necessary.
•
Damaged field coil
Check the field coil resistance. Install a new brake, if
necessary.
•
Friction disc thermally overloaded
Install a new friction disc or a new brake, if necessary.
Delayed brake
release
•
Air gap too large
Check the air gap. Install a new friction disc, if necessary.
•
Voltage applied to field coil too low
Check the field coil supply voltage and correct faults, if found.
Brake engagement
failure
•
Voltage applied to field coil in unpowered
condition too high (residual voltage)
Check whether residual voltage is applied to the field coil and
correct faults, if found.
•
Armature plate blocked mechanically
Eliminate mechanical blocks.
Delayed brake
engagement
•
Voltage applied to field coil too high
Check the field coil supply voltage and correct faults, if found.
Machine (e.g. motor)
start-up failure
•
Adjustment error of microswitch
switching point (only brakes with
microswitch)
Check the microswitch switching behaviour and replace the
switch, if necessary.
•
Damaged microswitch (only brakes with
microswitch)
Check the microswitch. Install a new switch, if necessary.
Brake torque too low
•
Air gap too large
Check the air gap. Install a new friction disc, if necessary.
•
Axial armature movement blocked by
hand release feature
Check the air gap. Install a new friction disc, if necessary.
•
Oily or greasy friction surfaces
Check the friction surfaces. Install a new friction disc, if
necessary.
•
Broken compression spring
Check the spring force. Install a new brake, if necessary.
Table 22/1: Possible faults, causes and corrective actions (list not exhaustive)