7
Inspection/maintenance
Notes on the BZ.. brake
Operating Instructions – CM3C63 – 100
98
12. Install the encoder cover. Tighten the screws with a tightening torque of 6.8 Nm.
Measuring the working air gap for brakes without manual brake release with single-cable technology
or terminal box
1.
WARNING!
Risk of injury!
De-energize the motor and brake and safeguard the drive against unintentional
power-up.
2. If installed, remove the forced cooling fan.
3. Remove the encoder cover.
4. Insert the stud (for information on sizes and tightening torques, refer to chapter
"Recommendations for studs" (→
99)) into the holes of the manual brake re-
lease [3] of the brake.
[3]
32324591755
[3] Holes of the manual brake release
5. Connect the brake to the voltage supply.
6. Release and apply the brake electrically. Measure the motion ΔH of the pressure
plate at the studs. This motion ΔH corresponds to the working air gap.
7. If the dimension ΔH is >
0.6 mm
, the brake lining carrier or the brake must be re-
placed. The working air gap cannot be adjusted.
8. Remove the studs from the holes of the manual brake release [3].
9. Install the encoder cover. Tighten the screws with a tightening torque of 6.8 Nm.
26870460/EN – 05/2021