Burford 2000 - Flow Chart 0-25 E146 Error Code

140 Chapter 7
Flow Chart 0-25 E146 Error Code
E146
BELT MOTOR FUSE BLOWN, MOTOR STALLED, OR BAD ENCODER
These error codes are set when the controller is trying to move the belt motor, but the motor either
isn't moving or the controller cannot tell that the motor is moving.
SAFETY WARNING:
The following troubleshooting procedure may require that tests be made with the electrical
enclosures open and power turned “ON”. These tests should only be conducted by authorized
personnel who are aware of the electrical and mechanical hazards present.
The most likely reason for this error is a mechanical obstruction or jam which is
preventing the belts from moving as needed. With power turned “OFF”, turn the
belts motor thru its complete range of motion, (MTR4) > 360° check for debris, is
a jam present?
Clear jam.
Replace F4.
Are belts initial direction
of travel wrong?
After checking for jams does motor:
A. not move at all?
B. move momentarily?
C. take off (racing) before faulting?
Replace
F4.
Is F4 on Aux
board blown?
Is DIP switch SW1 on the
Aux board set correctly?
Follow path
A.
Check wiring on Aux board
of belt(+) and (-) for correct
connections for RH and LH.
Check encoder LEDs belt PH A and PH B on FTB while
rotating motor by hand is LED sequence* good?
Replace
Aux board,
if issue
persists
replace
CPU.
Check wiring
connection, if wiring
good replace motor
encoder.
Is 5VDC present
on FTB across
J6(+) and J6(-)?
Replace FTB check Aux
board 96 PIN connector
for bent pins before
installing new FTB.
Is 5VDC present at
MTR4 encoder?
Encoder faulty, replace
encoder.
Faulty wiring, check
CBL1, PL1 and CBL2,
replace as necessary.
Yes No
A B C
Yes No Yes No
Yes
Missing
PH A
Or
PH B
Missing
both PH A
and PH B
Yes No
Yes No
Correct DIP
switch SW1
setting.
Yes No
OFF
ON
ON
OFF
OFF
OFF
OFF
ON
ON
OFF
When PH A LED is PH B LED should be
*FTB LED light sequence for MTR4
Read sequence
top to bottom
when turning
MTR in a
counter clock
wise direction.
Read sequence
bottom to top
when turning
MTR in a clock
wise direction.