Estun Summa Series - Encoder Divided Pulse Output

Summa Series Servodrive Product Manual
Application Functions
Document Version: V1.01
(Dec, 2019)
© 2019 ESTUN Automation Co., Ltd. All right reserved.
7-11
7.7.3 Encoder Divided Pulse Output
Encoder Divided Pulse Output Signals
The encoder divided pulse output is a signal that is output from the encoder and processed inside the
Drive. It is then output externally in the form of two phase pulse signals (phases A and B) with a 90°
phase differential. At the host controller, it is used as the position feedback.
Signal
Pin
Name
Remarks
PAO+
CN1-21
Encoder Divided Pulse
Output, Phase A
These encoder divided pulse output pins
output the number of pulses per Motor
resolution that is set in Pn200 (Pulse Numbers
for PG Frequency Division). The phase
difference between phase A and phase B is an
electric angle of 90°.
PAO-
CN1-22
PBO+
CN1-23
Encoder Divided Pulse
Output, Phase B
PBO-
CN1-24
PCO+
CN1-25
Encoder Divided Pulse
Output, Phase C
These pins output one pulse every Motor
rotation.
PCO-
CN1-26
ENC
Dividing
circuit
Serial data
Host contollerDrive
PAO
PBO
PCO
CN2 CN1
NOTE: Even for reverse operation (Pn001.0=1), the output phase form is the same as shown above.
The output phase form is as shown in Figure 7-2.
Figure 7-2 Output phase form
Forward rotation or movement
(phase B leads by 90°)
Phase A
t
90°
t
90°
Reverse rotation or movement
(phase A leads by 90°)
Phase B
Phase C
Phase A
Phase B
Phase C
IMPORTANT

If you use the Drive’s Phase-C pulse output for an origin return, rotate
the Motor two or more rotations before you start an origin return.

If an external encoder is used for the divided pulse output, the setting is
the same as above.