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

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