Lem Sensor And Internal Contactor - JLG X390AJ-X14J Supplement Manual

LEM Sensor and Internal Contactor

The BMS manages the battery pack through two devices:
1. LEM Sensor: LEM Sensor recognizes the amount
of current passing through the batteries when
charging or the current supply to the electrical
motor. See below for LEM Sensors of different
Generation BMS.
Figure 2-8. 1st Generation LEM Sensor
Figure 2-9. 2nd Generation LEM Sensor
Figure 2-10. 3rd Generation LEM Sensor
NOTE: 1st Generation, 2nd Generation and 3rd Generation
LEM sensors are not interchangeable.
NOTE: The LEM sensor has a direction of installation. Care-
fully install the LEM sensor in correct direction.
31215460
MAF11510
MAF11520
MAF12770
SECTION 2 - SERVICE PROCEDURE
Figure 2-11. LEM Sensor wires connections
MAF16870
2-9