E1 Series Servo Drive User Manual Basic Function Settings Before Operation
6-28 HIWIN MIKROSYSTEM CORP.
6.12 Setting encoder
When a system installed with absolute encoder is used for the first time, the absolute encoder must be
initialized. Therefore, AL.800 (Encoder data backup error) may occur when the power of the servo drive is
turned on for initialization. After the absolute encoder has been initialized, encoder data and related
alarms will be reset. In the following occasions, absolute encoder must be initialized.
(1) Tuning for the first time after a machine is installed
(2) AL.800 (Encoder data backup error) occurs.
(3) Multi-turn absolute encoder is reset.
After multi-turn absolute encoder has been initialized, the home position of the machine will change. Therefore,
the home position must be readjusted. If the home position is not readjusted, false operation may occur and
cause injury or damage to the machine.
6.12.1 Precautions for initialization
(1) Initialize encoder when servo off.
(2) When AL.800 (Encoder data backup error) occurs, the absolute encoder must be initialized.
(3) AL.8 alarms cannot be cleared by alarm reset input (ALM-RST) signal. Turn off and turn on the
servo drive to clear the alarm.
In the following occasions, there will be no multi-turn data (The multi-turn data is
usually 0.). Initializing absolute encoder is not required. Alarms related to absolute
encoder (AL.800) will not occur.
(1) Use single-turn absolute encoder.
(2) Use multi-turn absolute encoder as single-turn absolute encoder (Pt002 =
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