EElleeccttrriiccaal l ssyysstteemm 1100..7711
Is the battery voltage too low forIs the battery voltage too low for
normal operation? (Should be 33.6normal operation? (Should be 33.6
- 62.4V DC.)- 62.4V DC.)
YYeses
Charge the baCharge the battery.ttery.
NoNo
Measure the voltage between B-Measure the voltage between B-
and the E 4.7 and E 4.8and the E 4.7 and E 4.8
connections on the servo. Is theconnections on the servo. Is the
nominal battery voltage +48Vnominal battery voltage +48V
DC?DC?
NoNo
Check the fuses F18 and F19, andCheck the fuses F18 and F19, and
connection F2. B+ on the driveconnection F2. B+ on the drive
regulator.regulator.
YYeses
If faults arise, repair or replace theIf faults arise, repair or replace the
cabling.cabling.
Measure the voltage between B+Measure the voltage between B+
and the E 4.1 and E 4.2and the E 4.1 and E 4.2
connections on the servo. Is theconnections on the servo. Is the
nominal battery voltage +48Vnominal battery voltage +48V
DC?DC?
NoNo
If faults arise, repair or replace theIf faults arise, repair or replace the
cabling.cabling.
YYeses
Connect a new EPS 2001 to the E4Connect a new EPS 2001 to the E4
connector without dismantling theconnector without dismantling the
EPS 2001 unit.EPS 2001 unit.
If the LED lamp is lit, thisIf the LED lamp is lit, this
indicates that the new EPS 2001indicates that the new EPS 2001
unit has made an approved start-unit has made an approved start-
up.up.
Restart the truck. If the LED lampRestart the truck. If the LED lamp
is lit in the new EPS 2001 unit,is lit in the new EPS 2001 unit,
replace the unit.replace the unit.
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