Motor Installation; Brake Adjustment - ABB PME120-AI Service Instruction

PME120-AI / PME120-AN (Contrac) ELECTRICAL ROTARY ACTUATOR | SEI/PME120-EN REV. A
Installation
1 Sleeve
2 Sealing ring
3 Flange
4 Oil
Figure 15: Installation
1. Grease the new sealing ring and press it in the flange as
shown in Figure 15.
2. Make sure that the 'open' part of the sealing ring points
towards the oil; see Figure 15.
3. Use appropriate squeezer or similar device to press the
sealing ring uniformly into the flange (see right part of
Figure 15).

Motor installation

1. Put the stator into the actuator housing.
2. Make sure, the hose protected cables are within the groove
(see Figure 16 on page 13).
3. Put the rotor with the brake body into the stator housing.
4. Tighten the 4 motor screws.
5. Tighten the 4 grub screws to tense rotor / stator housing.
6. Use appropriate retainer (DELO-ML 5228 or LOCTITE 243;
both medium-firm; detachable) to secure the grub screws.
(Refer to Figure 12 and Figure 13 on page 12 for reference no.)
5 Squeezer
6 Gearbox
7 Mounting sleeve
Brake

Brake adjustment

WARNING
Risk of injury
Note that the actuator position may be changed accidentally
by the external load on the drive when the
brake is released or the motor is removed.
In automatic mode the brake is permanently released. Therefore,
it is not exposed to wear and does usually not require any
readjustment.
A Thickness gauge
B Groove
Figure 16: Brake (rubber cap removed)
However, if you want to check the brake gap, proceed as follows:
1. Disconnect the actuator from mains supply.
2. Remove hood (PME120AI incl. electronic unit).
3. Remove the rubber cover of the motor.
4. Unscrew the two grub screws
5. Put two thickness gauges (0.15 mm / 0.0059 in)
diametrically opposed between the two plates
6. Press plate 1 down.
7. Tighten the two grub screws
13
1 .
2 and 3
1
.