8.5 Operating Using Speed Control with Analog Reference
8
Operation
8-45
8.5.7 Encoder Signal Output
Encoder feedback pulses processed inside the SERVOPACK can be output externally.
The following signals are added when using an absolute encoder.
* SG (CN1-1, 2): Connect to 0 V on the host controller.
If using the SERVOPACK’s phase-C pulse output for a zero point return, rotate the servomotor twice or
more before starting a zero point return. If the configuration prevents the servomotor from rotating the ser-
vomotor or more, perform a zero point return at a motor speed of 600 min
-1
or below. If the motor speed is
faster than 600 min
-1
, the phase-C pulse output may not be output correctly.
1 Dividing
The dividing means that the divider converts data into the number of pulses based on the pulses of the encoder installed on
the servomotor, and outputs it. The setting unit is the number of pulses/revolution.
Type
Signal
Name
Connector
Pin Number
Name
Output
PAO
CN1-33
Encoder output phase A
/PAO
CN1-34
Encoder output phase /A
Output
PBO
CN1-35
Encoder output phase B
/PBO
CN1-36
Encoder output phase /B
Output
PCO
CN1-19
Encoder output phase C (zero-point pulse)
/PCO
CN1-20
Encoder output phase /C (zero-point pulse)
* Even in reverse rotation mode (Pn000.0 = 1), the dividing
1
output phase form is the same as that for the standard setting
(Pn000.0 = 0).
Output Phase Form
PG
SERVOPACK
CN2
CN1
Encoder
Host controller
These outputs explained here.
Phase A (PAO)
Phase B (PBO)
Phase C (PCO)
Serial data
Frequency
dividing
circuit
*
Note: The width of the zero-point pulse varies
depending on the setting of the dividing ratio
(Pn201). The width of zero-point pulse and
phase A are identical.
Phase A
Phase B
Phase C
90˚
t
Phase A
Phase B
Phase C
90˚
t
Forward rotation (phase B leads by 90˚) Reverse rotation (phase A leads by 90˚
Type
Signal
Name
Connector
Pin Number
Name
Input
SEN
CN1-4
SEN Signal Input
SG
CN1-2
Signal Ground
BAT (+)
CN1-21
Battery (+)
BAT (-)
CN1-22
Battery (-)
Output
SG
∗
CN1-1
Signal Ground
IMPORTANT
TERMS
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