-5-
JXC
※
-OMX0018
2. Product Outline
2.1 Outline of battery-less absolute encoder
(1) What is a Battery-Less Absolute Encoder?
The Battery-Less Absolute Encoder is an encoder which can detect the absolute position of multiple
rotations. The battery of this encoder does not back up the information of the multiple rotation whilst the
absolute encoder for single rotation does. Because of this, battery replacement is not required.
Detection of the absolute position enables the encoder to detect the actuator position when power is
supplied, so operation is available with no return to origin operation.
(2) When is the return to origin operation required?
1) When the power is applied for the first time.
2) When the actuator or motor is replaced.
3) When alarm
“
Group E
”
is cleared by re-applying the power.
(E.g.) When the encoder wiring is disconnected when the power is supplied.
- Encoder error (code: 01-192)
Warning
Do not use in an environment where a strong magnetic field is present.
A magnetic sensor is used in the encoder. Therefore, if the actuator motor is used in a strong magnetic field
environment, malfunction of failure may occur.
Do not expose the actuator motor to a magnetic field with a magnetic flux density of 1 mT or more.
Please read 16. Individual Precautions for Battery-Less Absolute Encoder.
Warning
Please check that there is no incorrect wiring or loose connections between the controller and
actuator.
If contact failure occurs in the motor power wiring, the motor power will be insufficient even in the Servo ON
state, which will reduce the holding force.
Because of this, the actuator moving part will fall downward in a vertical operation.
(In this operation, the lock function of the actuator with lock does not work).
The surge voltage generated by contact failure may damage the controller.
Please make sure that there is no incorrect wiring or loose connections between the controller and actuator
before use.
Caution
[Precaution when using the controller for the first time]
Reset the alarm.
Alarm
“
Absolute encoder ID Alarm error (code: 1-153)
”
will be generated when power is applied to the
controller for the first time and/or when the battery is replaced, so an alarm reset is necessary.
(Resetting the alarm registers the absolute encoder specific ID No. in the controller).
Conducting a Return to Origin operation after the alarm reset allows the use of the controller.
