Lenze g500-S Series - Page 59

Check and adjust air gap
DANGER!
Risk of injury due to rotary parts.
▶
The motor must not be running when checking the air gap.
Spring-applied brake ABR IP65/66 Spring-applied brake HBR IP54/55
Spring-applied brake ABR IP54/55
5
1
2
3
4
s
L
1 Stator 4 Sleeve bolt with hexagon
2 Armature plate 5 Sealing plug
3 Cheese head screw s
L
Air gap
How to check the air gap:
1.
Do not energize the brake.
2.
For brake ABR IP65/66: Lever out the sealing plug (5) on the circumference of the brake
and check the air gap s
L
through the bore. Aer checking, push the sealing plug back in,
taking care not to lt the plug.
3.
Measure the air gap s
L
between stator (1) and armature plate (2) in the vicinity of the cap
screws (3) using a surface feeler gauge.
4.
Compare the air gap with the value for the maximum permissible air gap s
L,max
.
5.
Set air gap to s
L,N
.
How to set the air gap on the ABR IP54/55 brake
1.
Loosen cheese head screws (3) with an Allen key.
2.
Screw the sleeve bolts (4) further into the stator (1) using an open-end wrench.
1/6 revoluon reduces the air gap by approx. 0.15 mm.
3.
Tighten the cheese head screws (10) to the prescribed torque.
Maintenance
Maintenance work
59