Mitsubishi Electric MR-J4-TM Instruction Manual page 524

17. APPLICATION OF FUNCTIONS
17.1.2 Scale measurement encoder
(1) Linear encoder
Refer to "Linear Encoder Instruction Manual" for usable linear encoders.
To use the scale measurement function in an absolute position detection system ([Pr. PA22] = "1 _ _ _"),
an absolute type linear encoder is required. In this case, you do not need to install an encoder battery to
the servo amplifier for backing up absolute position data on the load side. To use a servo motor in an
absolute position detection system ([Pr. PA03] = "_ _ _ 1"), you need to install an encoder battery to the
servo amplifier for backing up absolute position data on the servo motor side.
(2) Rotary encoder
When a rotary encoder is used as a scale measurement encoder, use either of the following servo
motors or synchronous encoder as an encoder.
To use the scale measurement function in an absolute position detection system ([Pr. PA22] = "1 _ _ _"),
you need to install an encoder battery to the servo amplifier for backing up absolute position data on the
load side. In this case, the battery life will be shorter because the power consumption is increased as the
power is supplied to the two encoders of motor side and load side.
(3) Configuration diagram of encoder cable
The following figure shows the configuration diagram of a servo amplifier and scale measurement
encoders. Cables to be used vary depending on each scale measurement encoder.
(a) Linear encoder
Refer to "Linear Encoder Instruction Manual" for encoder cables for linear encoders.
Servo amplifier
CN2
CN2L
POINT
Always use the scale measurement encoder cable introduced in this section.
Using other products may cause a malfunction.
For details of the scale measurement encoder specifications, performance, and
assurance, contact each encoder manufacturer.
Servo motors and synchronous encoder that can be used as an
MR-J4-_TM_
Encoder of rotary servo motor
Encoder cable
(Refer to "Linear Encoder Instruction Manual".)
encoder
HG-KR HG-MR
Linear encoder
17 - 3
Synchronous encoder
Q171ENC-W8
Scale
measurement
encoder