Mitsubishi Electric MR-J4W2-0303B6, Instruction Manual

Page: 456 / 588

17. APPLICATION OF FUNCTIONS
17 - 67
17.2.2 Scale measurement encoder
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.
(1) Linear encoder
Refer to "Linear Encoder Instruction Manual" for usable linear encoders.
To use the scale measurement function in the absolute position detection system ([Pr. PA22] = 1_ _ _),
an absolute position linear encoder is required. In this case, you do not need to install the encoder
battery to the servo amplifier for backing up the absolute position data of the load side. To use a servo
motor in the absolute position detection system ([Pr. PA03] = _ _ _1), the encoder battery must be
installed to the servo amplifier for backing up the absolute position data of the servo motor side.
(2) Rotary encoder
When a rotary encoder is used as a scale measurement encoder, use the following servo motor as the
encoder.
Servo motors used as encoders
HG-KR HG-MR
MR-J4W2-_B
Use a two-wire type encoder cable. Do not use MR-EKCBL30M-L, MR-EKCBL30M-H, MR-EKCBL40M-
H, or MR-EKCBL50M-H as they are four-wire type.
When an encoder cable of 30 m to 50 m is needed, fabricate a two-wire type encoder cable according to
app. 9.
To use the scale measurement function in the absolute position detection system ([Pr. PA22] = 1_ _ _),
the encoder battery must be installed to the servo amplifier for backing up the absolute position data of
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.