Lenze ECSCAxxx - Manual (Page 71)

Electrical installation
Power terminals
Motor holding brake connection
5
l
71 EDBCSXA064 EN 3.2
5.2.5 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.
5.2.5.1 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.
5.2.5.2 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 %