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MPH-02, MPB-02, MPD-02
Motor Holding Brake
Pertinent Parameters
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Motor, Mechanical Axis System, Measuring Systems
When this function is activated, the following diagnostic messages are
possible:
• E2051 Motor overtemp. prewarning
• F2019 Motor overtemperature shutdown
• F2021 Motor temperature monitor defective
Querying the current motor temperature (not in the case of the
characteristic temperature sensor number "1" or "4"):
• S-0-0383, Motor temperature
Brief Description
Motor holding brakes are used to hold axes with drive enable having been
switched off. This is particularly important for non-equilibrated vertical
axes. With IndraDrive controllers it is possible to control and monitor
motor holding brakes in a wear-resistant way.
Note:
Holding brakes at Rexroth motors normally aren't designed for
decelerating when in operation. Increased wear caused by
deceleration in operation can destroy the holding brake at an
early stage!
The following motor holding brake types are possible:
• electrically releasing brakes (self-holding)
• electrically holding brakes (self-releasing)
The motor holding brake can be directly mounted on the motor shaft, e.g.
in the case of Rexroth housing motors, or directly connected to the
mechanical axis system, e.g. in the case of linear kit motors.
IndraDrive controllers include application-specific holding brake controls
in order to minimize wear of the brake in the case of error:
• holding brake control for servo drives
• holding brake control for main drives
If the braking torque of holding brakes is too low due to wear and
corrosion, this can cause interruption of service in machines and
installations. IndraDrive controllers provide the advantage of monitoring
the effectiveness of the holding brake and, in the case of corrosion, re-
establishing the braking effect:
• automatically each time the drive enable is set and reset
• depending on the situation at a command of the control unit.
Control of the holding brake is linked with drive enable, considering
holding and releasing delays. In special cases it may be appropriate to
avoid this programmed link and release or apply the holding brake
independently. This, too, is possible with IndraDrive!
• S-0-0206, Drive on delay time
• S-0-0207, Drive off delay time
• S-0-0273, Maximum drive off delay time
• P-0-0525, Holding brake control word
5-5
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