Section 6

Troubleshooting

Overview

The system troubleshooting procedures involve observing the status of the “Ready” LED, the “DB On” LED and the “Monitor” 7 segment display. The tables in this section provide information related to the indications provided by these devices.

Note: The “Ready” LED can display RED, YELLOW or GREEN color.

Table 6-1Operating Mode Indications

Ready

Monitor

Status

Cause

OFF

OFF

Control Disabled

No Fault.

Green

Decimal

Control Enabled

Normal operating mode. No Fault.

 

Point

 

 

Red

1

Over-voltage fault (DC Bus)

Missing, damaged or wrong REGEN resistor.

 

 

 

Input voltage too high.

Red

3

Over-current fault.

Motor leads shorted or control failure.

 

 

(More than 2X peak current)

Load exceeds motor rating (too much

 

 

 

current).

 

 

 

Accel time set too short.

 

 

 

 

Red

4

Over or Under-voltage fault.

Internal 15VDC supply fault.

Red

5

Encoder fault (or encoder fault).

Encoder or cable short circuit or encoder not

 

 

 

connected (open circuit).

Red

6

Electronic fusing

Control current over-load detected by

 

 

(also see fault 7)

software.

Red

7

I2t limit reached. After a fault is detected,

Cycle time between Acceleration and

 

 

control will run at nominal output current for

Deceleration is too short.

 

 

2.5 seconds then stop. The control is disabled

 

 

 

and the Monitor will first display “7” fault then

 

 

 

the “6” fault.

Control should be relocated to cooler area.

 

 

Control Over-Temperature

 

 

 

Add fans or air conditioning to control

 

 

 

cabinet.

Red

9

User defined fault (see PLC).

 

Red

0

Processor “Watchdog” timeout

Reset control (turn off AC power, wait 1

 

 

 

minute then turn power on).

Green

Move Command not accepted.

More than two move commands have been

 

 

sent to the control. To return to normal

 

 

 

status, send a “Quit” or a new move

 

 

 

command to the control.

 

 

 

A non-initialized buffer line has been called

 

 

 

by the Machine inputs. To return to normal

 

 

 

status, call an initialized buffer line by

 

 

 

MA1-4 or send a “Quit” to the control.

Green

-l

CW Enable switch activated.

CW limit reached. Check X3-10 input.

 

 

 

 

Green

l-

CCW Enable switch activated.

CCW limit reached. Check X3-11 input.

Note: To protect the internal fuse, allow at least 1 minute after power down before turning power on (power Off/On cycle).

MN1851

Troubleshooting 6-1

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Baldor manual Section Troubleshooting, Overview, 1Operating Mode Indications, MN1851 Troubleshooting