Electrical installation
Power terminals
Motor holding brake connection
5
104
EDKCSEX064 DE/EN/FR 6.0
5.2.3 Motor holding brake connection
The motor holding brake
ƒ is connected to X25/BD1 and X25/BD2.
ƒ is supplied with low voltage via the terminals X6/B+ and X6/B−:
+23 ... +30 V DC, max.1.5 A
Stop!
ƒ Protect X6/B+ with an F 1.6 A fuse.
ƒ If no suitable voltage (incorrect amount, incorrect polarity) is
connected to the brake, it is applied and can overheat or be
destroyed by the continuously running motor.
5.2.3.1 Spark suppressor
The axis module comes with an integrated spark suppressor for protecting the
contacts of the integrated brake relay when the motor holding brake (inductive
load) is switched.
5.2.3.2 Monitoring the brake connection
The connection of the motor holding brake can be monitored for voltage failure
and cable breakage if monitoring is activated under C0602.
The monitoring system of the brake connection trips under the following
conditions:
Case 1, motor holding brake released (brake relay contact is closed):
ƒ Current via holding brake (I
B
) < 140 mA +/−10 % or
ƒ Voltage at X6/B+ and X6/B− (V
B
) < +4 V +/−10 %
Case 2, motor holding brake closed (brake relay contact is open):
ƒ Voltage at X6/B+ and X6/B− (V
B
) < +4 V +/−10 %
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