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9-16
Application Notes
9.10 Holding Brake (Option)
Brake control
Functional test
In normal operation, use the brake only when at a standstill and when
performing the drive-internal brake check. The motor holding brake is
required for holding the axle when the machine is in a de-energized state.
Dangerous movements! Persons endangered by
falling or descending axles!
⇒ Observe supplementary DIN and recommendations.
For European countries:
DANGER
- DIN EN 954 / 03.97 on security-related parts of
controllers.
- Instruction sheet for vertical axes
Editor:
Süddeutsche Metall-Berufsgenossenschaft
Fachausschuss Eisen und Metall II
Wilhelm-Theodor-Römheld-Str. 15
55130 Mainz, Germany
USA: See National Electric Code (NEC), National
Electrical Manufacturers Association (NEMA) as well
as local building regulations.
The following is generally valid: the national terms
must be observed!
⇒ The serially delivered motor holding brake does not
suffice to ensure protection of persons!
⇒ Ensure protection of persons by superordinate fail-
safe measures.
⇒ Cordon off the hazardous area by means of a safety
fence or a safety screen.
⇒ Additionally secure vertical axes to prevent them
from sinking or descending after having shutdown
the motor, for instance as follows:
– lock the vertical axes mechanically,
– provide an external braking / collecting / clamping
device, or
– ensure sufficient weight compensation of the axes.
- Miscellaneous suitable measures.
The brake's control mechanism must ensure this function in normal
operation. Under the worst load condition of the power supply with a
voltage of 24 V
+/- 10% must provided the motor. To identify a failure
DC
on time during operation, the power supply for the brakes must be
monitored by an undervoltage detection system.
Before startup and during operation specifications the brake function must
be tested with the "brake command" function. By applying a small amount
of motor torque, the brake is checked for slippage. Additional information
and specifications of this function may be found in the ECODRIVE
firmware functional descriptions.
Rexroth IndraDyn A
DOK-MOTOR*-MAD/MAF****-PR03-EN-P
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