Absolute value data of the 16-bit serial encoder built in GYC/GYS type motor are lost, detected only when ABS (absolute system) is selected by setting of system para. 99. The manual's first action is: “This alarm is detected only when ABS (absolute system) is selected by setting of system para. 99. Use an absolute system upon presetting the current position. This alarm detection cannot be reset by alarm reset [RST] signal. (i) Mount a battery (WSB-S type) on the amplifier or supply power to the control input/output terminal on CN1. (ii) Connect the encoder wiring from CN2 to the encoder wires of motor. The current position information is destroyed if approx. 1 [h] elapses at a status where the encoder wiring is not connected. (iii) Preset the current position in the test running mode [Fn003]. Executing the position preset simultaneously resets the alarm detection.”
- Model
- RYS MHT260a
- Display shows
- AL AL
- Type
- Alarm code
- Source
- Manual p. 248
What AL AL means
Absolute value data of the 16-bit serial encoder built in GYC/GYS type motor are lost. p. 248
Common causes
- Absolute value data of the 16-bit serial encoder built in GYC/GYS type motor are lost. p. 248
What to do
- This alarm is detected only when ABS (absolute system) is selected by setting of system para. 99. Use an absolute system upon presetting the current position. This alarm detection cannot be reset by alarm reset [RST] signal. (i) Mount a battery (WSB-S type) on the amplifier or supply power to the control input/output terminal on CN1. (ii) Connect the encoder wiring from CN2 to the encoder wires of motor. The current position information is destroyed if approx. 1 [h] elapses at a status where the encoder wiring is not connected. (iii) Preset the current position in the test running mode [Fn003]. Executing the position preset simultaneously resets the alarm detection. p. 248
Before you service the product, read the safety instructions in the manual p. 3.
If AL AL is still not resolved
- Contact Fuji for special systems or applications such as atomic-energy control, aerospace use, medical use, and traffic control. p. 4 “Customers, who want to use the products introduced in this manual for special systems or devices such as for atomic-energy control, aerospace use, medical use, and traffic control, are requested to consult the Fuji.”
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