Fault Finding - Sevcon MillipaK 4QPM Manual

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Fault Finding

The MillipaK controller includes a number of features designed to help the user track down
operational faults, wiring faults or internal controller faults.
The Diagnostic LED mounted next to the calibrator connectors on the front of the controller
serves as a simple diagnostic tool as explained below:
ON No fault, normal condition
OFF Internal controller fault
1 flash Personality out of range
2 flashes Illegal start condition (Traction)
3 flashes MOSFET Short Circuit
4 flashes Contactor fault or Motor Open Circuit
5 flashes Not used
6 flashes Accelerator wire off fault
7 flashes Low or High battery voltage or BDI cutout operating
8 flashes Over temperature or timed cutback
10 flashes Power Up Autozero has not yet been completed
Table 10: Flash Fault Descriptions
In addition to the LED indication a more detailed description of any faults detected may be found
by using the calibrator. Menu item number 13.01 gives a code which corresponds to the following
detected faults:
ID Fault
0 System OK
1 Thermal Cutback
Timed Current Limit
2
Cutback
3 Accelerator Wire Off
Accelerator Pressed at
4
Power Up
5 Belly Fault
6 Seat Fault
7 Autozero Not Taken
8 FS1 Recycle
9 SRO Fault
MillipaK 4QPM Controller Manual
Description
Maximum power available to the motor has
been reduced due to excessive Heatsink
temperature.
Maximum power available to the motor has
been reduced by the Timed Current Limit
Cutback function.
Input wire from accelerator has been
disconnected.
Accelerator pedal pressed at power up
The Belly switch function has occurred
Drive selected and no seat switch closed.
No drive allowed until power up autozero has
been taken
FS1 switch remained closed during a direction
change
FS1 switch selected for greater the SRO delay
with Direction switches open.
Page 67
Fault Finding
Flash Fault
On
8
8
6
6
2
2
10
2
2
13/08/03