Baldor mn1854 Section Troubleshooting, Additional Information General, 1Operation Indicators

Section 7

Troubleshooting

Overview	The system troubleshooting procedures involve observing the status of the LED’s.
	The tables in this section provide information related to the indications provided by
	these devices.

Table 7-1Operation Indicators

LED	Color	Status	Comments
Power	Green	Indicates that AC power is applied and the	LED’s will flash during power up tests but only
		supplies are operating.	the Power LED should remain on.
Regen	Yellow	On during Regen activity.	Should remain off. On when Regen circuit is
			active to dump excess bus energy.
OverVoltage/	Red	Regen circuit cannot handle excess energy or	This fault condition is reset by cycling power.
INTLK		Interlock circuit is open.
Temperature	Red	On when internal heatsink temperature exceeds	This fault condition is reset by cycling power.
		158° F (70° C).	Install a fan kit, reduce the load, reduce ambient
			temperature, use the Standby current setting.
		Table 7-2Axis 1 and 2 Indicators
Stepping	Green	Indicates LinStep+ is sending CW (right LED) or	Above several steps per second the LED
		CCW (left LED) step pulses.	becomes continuously illuminated.
Disable/Short	Yellow	On when the Shutdown input is activated by an	This fault condition is reset by cycling power.
		external control. The Shutdown signal also	To isolate the problem, disconnect and insulate
		activates the Short output, but does not turn on	the motor leads from the drive connector, but
		the Short LED.	leave the Interlock jumper installed. Apply
		Short LED indicates that a Short Circuit or	power and step pulses. If the drive does not
		Undervoltage condition has occurred. A short	invoke the short circuit fault, then it is likely that
		circuit problem can occur because of shorted	the defect is in the motor, wires or the
		or miswired motor leads, or internal fault.	connections at the drive.

Note: The fault LED and fault Output do NOT activate the same. The fault Output indicates that one of several fault conditions has occurred. The fault LEDs provide a means of resolving the source of the fault.

Additional Information (General)

Symptom	Possible Cause	Possible Remedies
The keypad is blank	The keypad is not receiving +5VDC.	Verify all wiring is correct.
with no backlight.		Verify that the +5VDC is between 4.8 and 5.2V.
Display is difficult to	Contrast ratio is incorrectly set	Adjust the contrast with the pot on the back of the keypad.
read
The ON LED is yellow.	FLASH memory is corrupt.	The operating system and user programs must be reloaded.
The ON LED is red.	A Fault has occurred.	The fault can be determined with the keypad or by using
		serial status commands (SS, SA, SD).
Motor moves the wrong	Wrong Gear Ratio.	Check distance units
distance
	Motor stalled.	Check motor current, inductance, anti–resonance settings
		Check Speed Torque required for move, reduce
		acceleration.
Motor stalls	Acceleration and/or velocity too high.	Reduce acceleration and/or velocity.
	Motor configured incorrectly.	Check motor current, inductance and anti–resonance
		settings.
Motor direction is wrong	The motor phases are miswired.	Verify connections, or swap A+ with A–.
	The system real direction is reversed.	Change the control’s direction parameter.
The control does not re-	The keypad is disabled.	Check the switch settings on the back of the keypad.
spond to keypad input.
The motor “whines”	The inductance or anti–resonance	Verify the Inductance setting. Operation is best with motors
	setting is incorrect.	4 mH or above. Otherwise, verify the anti–resonance setting.

MN1854 Troubleshooting 7-1