Encoder Output Pulses - YASKAWA SGMJV User Manual

4.4.4 Encoder Output Pulses

The encoder pulse output is a signal that is output from the encoder and processed inside the SERVOPACK. It
is then output externally in the form of two phase pulse signal (phases A and B) with a 90° phase differential.
It is used as the position feedback to the host controller.
Signals and output phase form are as shown below.
(1) Signals
Signal
Type
Name
PAO
/PAO
PBO
Output
/PBO
PCO
/PCO
Serial
data
ENC
(2) Output Phase Form
Forward rotation (phase B leads by 90°)
Phase A
Phase B
Phase C
Note: The pulse width for phase C (origin pulse) changes according to the setting of the encoder output pulses (Pn212) and
becomes the same as that for phase A.
Even in reverse rotation mode (Pn000.0 = 1), the output phase form is the same as that for the standard setting
(Pn000.0 = 0) above.
Connector
Pin Number
CN1-17
Encoder output pulse: phase A
CN1-18
CN1-19
Encoder output pulse: phase B
CN1-20
CN1-21
Encoder output pulse: phase C
CN1-22
SERVOPACK
CN2
Dividing
Converts serial
circuit
data to pulse.
(Pn212)
90°
t
If using the SERVOPACK's phase-C pulse output for a zero point return, rotate the ser-
vomotor two or more times before starting a zero point return. If the servomotor cannot
be rotated two or more times, perform a zero point return at a motor speed of 600 min
or below. If the motor speed is faster than 600 min
put correctly.
Name
These encoder pulse output pins out-
put the number of pulses per motor
revolution that is set in Pn212. Phase
A and phase B are different from
each other in phase by an electric
angle of 90°.
One pulse is output per motor rota-
tion.
Host controller
CN1
PAO
PBO
PCO
Reverse rotation (phase A leads by 90°)
90°
Phase A
Phase B
Phase C
-1
, the phase-C pulse may not be out-
4.4 Trial Operation
Remarks
t
-1
4-27
4