User Manual

Preventive Maintenance and
Troubleshooting Common Drive Problems
Appendix B
B-8
1. The motor will not run -- No fault is displayed.
Is rated input voltage present at terminals
R
/
L1
,
S
/
L2
, and
T
/
L3
? Check input side for circuit breaker trip, contactor coil malfunction, blown
fuse,
etc.
No
Is the decimal point in the mode display lit?
Yes
The drive is in the programming mode. Give the drive a valid stop command
and press the lock switch. The decimal point in the mode display will light and
the local or remote control source currently controlling the drive will be
displayed.
Parameter 8 settings.
0 = Local start/stop control without maintained external stop.
1 =
Remote 2wire start/stop control at the Control and Signal Wiring
Terminal Block.
2 = Local start/stop control with maintained external stop.
3 =
Remote 3wire start/stop control at the Control and Signal Wiring
Terminal Block.
Is Parameter 8 set correctly?
Parameter 9 settings.
0 = Local speed control.
1, 2 or 3 = Remote speed control only at the Control and Signal Wiring
Terminal Block -- T
erms 1, 2 and 3.
1 = External speed pot or 05V DC.
2 = External speed pot or 010V DC.
3 = External speed pot or 420mA.
Is Parameter 9 set correctly?
Are Parameters 6 and 7 set correctly? If Parameter 6 is set to a value other than 0, Parameter 7 is active. Parameter
7 must then be set to the motors nameplate current rating.
Verify and change connections if necessary.
Are the motor leads securely connected to drive output terminals
U
/
T1
,
V
/
T2
and
W
/
T3
?
Contact your nearest AB representative for application assistance.
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No