Drive Error List - Mitsubishi

Display	Name	Definition	Cause	Action
AL.10	Under-Voltage	Power supply  voltage dropped to 160VAC or less.	1. Power supply voltage is low	Check the power supply.
			2. There was an instantaneous control power failure of 60ms or longer.
			3. Shortage of power supply capacity caused the power supply voltage to drop at start, etc.
			4. The bus voltage dropped to 200VDC.
			5. Faulty parts in the servo amplifier	Change the servo amplifier.
AL.12	Memory Error 1	RAM, memory fault	Faulty parts in the servo amplifier	Change the servo amplifier.
AL.13	Clock Error	Printed board fault
AL.15	Memory Error 2	EEP-ROM fault	1. Faulty parts in the servo amplifier	Change the servo amplifier.
			2. The number of write times to EEP-ROM exceeded 100,000.
AL.16	Encoder Error 1	Communication error  occurred between encoder and servo amplifier.	1. Encoder connector (CN2) disconnected.	Connect correctly.
			2. Encoder fault	Change the servo motor.
			3. Encoder cable faulty (Wire breakage or shorted)	Repair or change cable.
AL.17	Board Error	CPU/Parts Fault	1. Faulty parts in the servo amplifier	Change the servo amplifier.
		The output terminals U, V, W of the servo amplifier and the input terminals U, V, W of the servo motor are not connected.	2. The wiring of U, V, W is disconnected or not connected.	Correctly connect the output terminals U, V, W of the servo amplifier and the input terminals U, V, W of the servo motor.
AL.19	Memory Error 3	ROM memory fault	Faulty parts in the servo amplifier	Change the servo amplifier.
AL.1A	Motor Combination  Error	Wrong combination of servo amplifier and servo motor.	Wrong combination of servo amplifier and servo motor connected.	Use correct combination.
AL.20	Encoder Error 2	Communication error occurred between encoder and servo amplifier.	1. Encoder connector (CN2) disconnected.	Connect correctly.
			2. Encoder fault	Change the servo motor.
			3. Encoder cable faulty (Shorted or broken wire)	Repair or change cable.