Omron ACCURAX G5 User Manual page 132

3-1 Driver Specifications
Encoder Outputs (Phases A, B and Z)
Pin 21: +A, 22: -A, 48: -B, 49: +B, 23: +Z, 24: -Z
Function
It outputs the phase A, phase B, and phase Z encoder signals for the Servomotor.
The encoder outputs conform to the RS-422 communication method.
You can use External Feedback Pulse Dividing Numerator Setting (Pn324) and External
Feedback Pulse Dividing Denominator Setting (Pn325) to set the dividing ratio.
The logical relation of phase B to the phase A pulse and the output source are set in the External
Feedback Pulse Direction Switching (Pn326).
The ground for the output circuit line driver is connected to the signal ground (SENGND). It is not
isolated.
3
The maximum output frequency is 4 Mpps (after quadruple multiplier).
The output frequency = the motor encoder resolution × (Pn324/Pn325) × 4 × motor rotation speed
(r/min)/60
The output phases are as shown below. (They are the same for both incremental and absolute
encoders.)
Phase A
Phase B
Phase Z
3-42
Synchronous
If the motor encoder
resolution × Pn324/Pn325
is a multiple of 4, phases Z
and A are synchronized.
Accurax G5 AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
Phase A
Phase B
Phase Z
Asynchronous
In cases except for the one
on the left, phases A and Z
are not synchronized.