Lenze g500-S Series - Page 58

Maintenance work at the spring-applied brake
NOTICE
▶
Brakes with defecve armature plates, springs or anges must be completely replaced.
▶
Before carrying out maintenance work, idenfy the brake and motor protecon type from
the nameplate.
4Nameplates ^ 12
Before working on the brake, remove the integral fan cover or blower cover on
the motor.
How to remove the fan cover:
1.
Loosen and remove screws at the cover circumference.
2.
If necessary, disconnect the connecng cable on the blower cover.
3.
Remove fan cover.
Release brake and check voltage
DANGER!
Risk of injury due to rotary parts.
▶
Do not touch rotang components.
DANGER!
Risk of injury by electric shock.
▶
Do not touch live connecons.
1.
Check the funcon of the brake while the drive is running: The armature plate must be
ghtened and the rotor must move free of residual torque.
2.
Measure the DC voltage on the brake.
-
Compare the measured DC voltage with the voltage specicaon on the nameplate. A
deviaon up to ±10 % is permissible.
-
When using bridge/half-wave recers: Aer switching over to one-way voltage, the
measured DC voltage may drop to 45% of the voltage indicated on the nameplate.
Maintenance
Maintenance work
58