Delta Electronics ASDA-B Series manual ALE 3 / ALE, ALE 4 / ALE, Pulse shift, ALE 5 / ALE

Chapter 10 TroubleshootingASDA-B Series
ALE 3 / ALE	: Undervoltage
Potential Cause		Checking Method	Corrective Actions
The main circuit voltage		Check whether the wiring of main circuit input	Reconfirm voltage wiring. Correct
is below its minimum		voltage is correct.	input wiring is needed.
specified value.
No input voltage at		Use voltmeter to check whether input voltage at	Reconfirm power supply, including
main circuit.		main circuit is normal.	switches.
Power input error.		Use voltmeter to check whether the input	Use correct power supply or
(Incorrect power input)		voltage is within the specified limit.	stabilizing power.
Servo drive hardware is		The servo drive hardware is damaged after the	Please contact your distributor for
		users have used voltmeter to check the input
damaged.		voltage falls within the rated input voltage.	assistance or contact with Delta.

ALE 4 / ALE	: Z Pulse shift
Potential Cause		Checking Method	Corrective Actions
Encoder is damage.		Check Encoder for the damage.	Repair or replace the motor.
Encoder is loose.		Examine the Encoder connector.	Install the motor again.
ALE 5 / ALE	: Regeneration error

„When the power is on:

Potential Cause	Checking Method	Corrective Actions
Servo drive hardware is	Please contact your distributor for assistance or contact with Delta.
damaged.

„When the motor is running:

Potential Cause	Checking Method	Corrective Actions
Regenerative resistor is	Check the wiring connection of regenerative	Reconnect regenerative resistor.
not connected.	resistor.
The transistor for	Check if the transistor for regeneration is short-	Please contact your distributor for
regeneration is
	circuited.	assistance or contact with Delta.
disabled.
Parameter setting is in	Confirm the parameter setting and	Correctly reset parameter again.
error.	specifications of regenerative resistor.
Servo drive hardware is	Please contact your distributor for assistance or contact with Delta.
damaged.

10-4 Revision January 2009