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4. OPERATION AND FUNCTIONS
4.5 Absolute position detection system
An ABS type linear scale is necessary to configure an absolute position detection system under full closed
control using a linear scale.
In this case, absolute value data are backed up on the linear scale side, and therefore, the encoder battery
(MR-BAT) need not be installed to the servo amplifier.
POINT
When configuring an absolute position detection system with this servo
amplifier under semi closed control, the encoder battery (MR-BAT) must
be installed to the servo amplifier like the standard amplifier.
At this time, the option cable (MR-J2SCLCBL02M-P-H) cannot be used.
Connect the encoder cable of the motor encoder directly to the servo
amplifier.
[Precautions]
Make setting to make Absolute position detection valid in the servo parameter (Pr. 1
0001). The system
can be used in the following limited conditions.
(1) Using conditions
1) Use an absolute type linear scale with the full closed encoder.
2) Select Always full closed (Pr. 62
1).
(2) Absolute position detection range using encoder
Encoder Type Absolute Position Detection Enabled Range
Linear scale
(Serial I/F)
Movable distance range of scale
(within 32-bit absolute position data)
(3) Alarm detection
The absolute position-related alarm (25) and warnings (92, 9F, E3) are not detected.
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