3. SIGNALS AND WIRING
3 - 30
(3) Output signal
Encoder A-
phase pulse
(differential line
driver)
The encoder output pulses set in [Pr. PA15] are outputted in the
differential line driver type.
In CCW rotation of the servo motor, the encoder B-phase pulse lags the
encoder A-phase pulse by a phase angle of π/2.
The relation between rotation direction and phase difference of the A-
phase and B-phase pulses can be changed with [Pr. PC19].
Encoder B-
phase pulse
(differential line
driver)
Encoder Z-
phase pulse
(differential line
driver)
The encoder zero-point signal is outputted in the differential line driver
type. One pulse is outputted per servo motor revolution. This turns on
when the zero-point position is reached. (negative logic)
The minimum pulse width is about 400 μs. For home position return using
this pulse, set the creep speed to 100 r/min or less.
Encoder Z-
phase pulse
(open-collector)
The encoder zero-point signal is outputted in the open-collector type.
This is used to output the data set in [Pr. PC14] to between MO1 and LG
in terms of voltage.
Output voltage: ±10 V
Resolution: 10 bits or equivalent
This signal outputs the data set in [Pr. PC15] to between MO2 and LG in
terms of voltage.
Output voltage: ±10 V
Resolution: 10 bits or equivalent
These are terminals for RS-422/RS-485 communication.
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