Brake Adjustment; Electrical Connection; General - ABB LME620AI Service Instruction

5.3

Brake adjustment

STOP 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
STOP
In automatic mode the brake is permanently
released. Therefore, it is not exposed to
wear and does usually not require any re-
adjustment.
However, if you want to check the brake
gap, proceed as follows
- disconnect the actuator from mains sup-
ply
- remove hood (LME620AI incl. electronic
unit)
- remove the rubber cover of the motor
- unscrew the two grub screws (1)
- put two thickness gauges (0.15 mm /
0.0059") diametrically opposed between
the two plates (3 + 4)
- press plate 1 down
- tighten the two grub screws (1)
6

Electrical Connection

6.1

General

The cable between actuator and electronic unit is connected to the electronic unit via terminals and to
the actuator via a plug. The plug housing may contain a carrier for terminals or for the cable ends with
crimp sockets.
male
carrier
Fig. 10: Exemplary illustration of cable connection to the actuator; plug housing may contain alternatively a terminal car-
rier or a crimp carrier.
STOP Disconnect the actuator and electronic unit from the mains supply before you start working at the elec-
trical components. Make sure that switching off the actuator does not affect the process!
STOP
43/68-13 EN Electrical Linear Actuators for Continuous Modulating Control LME620AI / LME620AN (Contrac)
female
(68de0049)
socket
carrier
2
3
Fig. 9: Brake (rubber cap removed)
terminal carrier
or
plug
housing
Electrical Connection
thickness
gauge
4
groove
(68de0017)
cables with
cable end
sleeve
(68d_0157)
crimp carrier
cables with
crimp pins
(68d_0156)
1
11