A/B/Z-Phase Differential Output Linear Encoder - Mitsubishi Electric MELSERVO MR-J4-B Series Instruction Manual

1. LINEAR ENCODER

1.6 A/B/Z-phase differential output linear encoder

This section explains the connection of the A/B/Z-phase differential output linear encoder. Prepare the MR-
J3CN2 connector set for the encoder cable and fabricate it according to the wiring diagram in (3) of this
section.
(1) A/B/Z-phase differential output linear encoder specifications
Each signal of the A, B, and Z-phase of the linear encoder is provided in the differential line driver
output. It cannot be provided in the collector output.
The phase differences of the A-phase and B-phase pulses and the pulse width of the Z-phase pulse
need to be 200 ns or more.
The output pulse of A-phase and B-phase of the A/B/Z-phase differential output linear encoder is in the
multiply-by-four count method.
The linear encoder without Z-phase cannot make a home position return.
The tolerable resolution range is between 0.001 µm and 5 µm. Please select a linear encoder within the
range.
Linear encoder
Am26LS31 or
equivalent
(2) Connection of servo amplifier and A/B/Z-phase differential output linear encoder
Servo amplifier
LA, LB, LZ
LAR, LBR, LZR
CN2
Thermistor of linear servo motor
CN2L
Connector set
MR-J3CN2 (option)
LA
LAR
LB
LBR
LZ
LZR
1 - 46
Phase difference: 200 ns or more
1 pulse of Z-phase = 200 ns or more
A/B/Z-phase differential output linear encoder