Electrical Test Values; Test Values (Position Sensor); Test Values; Winding Resistance (Motor) - ABB LME620AI Service Instruction

8

Electrical Test Values

NOTICE Check wiring and proper terminal connections before you start the test procedure.
8.1

Test values (position sensor)

The in- / output signals are assigned to terminals of the electronic unit as follows:
Fig. 25: Signal terminal location
8.2

Test values

Brake voltage:
Motor voltage:
8.3

Winding resistance (motor)

STOP Disconnect the voltage supply and the actuator plug prior to any resistance measuring. Make sure that
switching off the actuator does not affect the process.
STOP
Depending on the actuator version proceed as follows:
8.3.1 LME620AI (integrated electronic unit)
- remove the plug
- remove the actuator hood with electronic unit
- check pins at pin carrier; see fig. 20 for pin reference
8.3.2 LME620AN (separate electronic unit)
- remove plug
- measure between pins at actuator plug; see fig. 17 + 19 for pin reference
20 Electrical Linear Actuators for Continuous Modulating Control LME620AI / LME620AN (Contrac)
term. 17:
signal terminals
term. 18:
term. 19:
term. 20:
term. 21:
term. 22:
term. 23:
term. 24:
(see fig. 25 for terminal position)
DC 135 V with AC 115/AC230 V mains supply
check for currents symmetry (i. e. with clip-on ammeter)
Electrical Test Values
DC +15 V; +/- 15% (supply); refer to
term 22
only used for cable length detection
with EAS822
clock
data
reference potential for position signal
reference potential for temp. signal
and supply voltage
position proportional voltage signal
(0.4... 4.4 V); refer to term. 21; end po-
sitions of actuator must be adjusted
temperature proportional voltage sig-
nal; refer to term. 22;
(∆ V approx. 22.4 mV / °C;
approx. 1.8 V at 20°C)
43/68-13 EN