Maintenance/repair7
j | BA 14.0168 | 10/2013
50
7.3.4 Release / voltage
Danger!
The running rotor must not be touched.
Danger!
Live connections must not be touched.
1. Observe the brake function during operation of the drive. The armature plate must be
attracted and the rotor must move without residual torque.
2. Measure the DC voltage at the brake.
– The DC voltage measured after the overexcitation time (see bridge/half-wave
rectifier) must be half the voltage indicated on the nameplate. A 10 % deviation is
permissible.
7.3.5 Adjusting the air gap
Danger!
The brake must be free of residual torque.
Stop!
Please observe when mounting the flange with additional screws:
Behind the threaded holes for the screws in the flange there must be clearing
holes in the endshield. Without clearing holes the minimum r otor thickness
cannot be used. Under no circumstances may the screws be pressed against
the endshield.
1. Unbolt screws (Fig. 9).
2. Screw the threaded sleeves into the stator by using a spanner.
1
/
6
revolution reduces
the air gap by approx. 0.15 mm.
3. Tighten screws, torques 15.
4. Check air gap ”s
L
” near the screws using a feeler gauge, ”s
LN
” 15.
5. If the difference between the measured air gap and ”s
LN
” is too large, repeat the
readjustment.
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