EP Equipment 508000003143, Руководство по эксплуатации

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62
TH.
PROTEC
TION
The temperature of the controller
base plate is above 85 °C. The
maximum current is proportionally
decreased with the temperature
excess from 85 °C up to 105 °C.
At 105 °C the current is limited to
0 A.
It is necessary to improve the controller
cooling. To realize an adequate cooling in
case of finned heat sink important factors
are the air flux and the cooling-air
temperature. If the thermal dissipation is
realized by applying the controller base
plate onto the truck frame, the important
factors are the thickness of the frame and
the planarity and roughness of its surface.
If the alarm occurs when the controller is
cold, the possible reasons are a
thermal-sensor failure or a failure in the
logic board. In the last case, it is
necessary to replace the controller.
65
MOTOR
TEMPER
AT.
This warning occurs when the
temperature sensor is open (if
digital) or if it has overtaken the
MAX. MOTOR TEMP. threshold (if
analog) (see paragraph 8.2.3).
1- Check the temperature read by the
thermal sensor inside the motor
through the MOTOR TEMPERATURE
reading in the TESTER function.
2- Check the sensor ohmic value and the
sensor wiring.
3- If the sensor is OK, improve the cooling
of the motor.
4- If the warning is present when the motor
is cool, replace the controller.
66
BATTER
Y LOW
Parameter BATTERY CHECK is
other than 0 (SET OPTION) and
battery charge is evaluated to be
lower than BATT.LOW
TRESHLD (ADJUSTMENTS).
1- Check the battery charge and charge it if
necessary
2- If the battery is actually charged,
measure the battery voltage through a
voltmeter and compare it with the BATTERY
VOLTAGE reading in the TESTER function.
If they are different, adjust the ADJUST
BATTERY parameter (ADJUSTMENTS list)
with the value measured through the
voltmeter.
3- If the problem is not solved, replace the
logic board.
Error Message
Possible cause Fault elimination
Error
Error text