5.24 Absolute Encoders
5.24.1 Connecting an Absolute Encoder
5-74
5.24
Absolute Encoders
The absolute encoder records the current position of the stop position even when the power
supply is OFF.
With a system that uses an absolute encoder, the Controller Section can monitor the current
position. Therefore, it is not necessary to perform an origin return operation when the power
supply to the system is turned ON.
There are three types of encoders for Rotary Servomotors. The usage of the encoder is speci-
fied in Pn002 = n.
X
.
Refer to the following manual for encoder models.
Σ
-7-Series Rotary Servomotor Product Manual (Manual No.: SIEP S800001 36)
•
Parameter Settings When Using an Incremental Encoder
•
Parameter Settings When Using a Single-Turn Absolute Encoder
•
Parameter Settings When Using a Multiturn Absolute Encoder
5.24.1
Connecting an Absolute Encoder
You can get the position data from the absolute encoder with MECHATROLINK communica-
tions.
Refer to the following section for information on connecting absolute encoders.
3.4.3 Wiring the SERVOPACK to the Encoder
Parameter
Meaning
When
Enabled
Classification
Pn002
n.
0
(default setting)
Use the encoder as an incremental encoder.
A battery is not required.
After restart
Setup
n.
1
Use the encoder as an incremental encoder.
A battery is not required.
n.
2
Use the encoder as a single-turn absolute encoder.
A battery is not required.
Parameter
Meaning
When
Enabled
Classification
Pn002
n.
0
(default setting)
Use the encoder as a single-turn absolute encoder.
A battery is not required.
After restart
Setup
n.
1
Use the encoder as an incremental encoder.
A battery is not required.
n.
2
Use the encoder as a single-turn absolute encoder.
A battery is not required.
Parameter
Meaning
When
Enabled
Classification
Pn002
n.
0
(default setting)
Use the encoder as a multiturn absolute encoder.
A battery is required.
After restart
Setup
n.
1
Use the encoder as an incremental encoder.
A battery is not required.
n.
2
Use the encoder as a single-turn absolute encoder.
A battery is not required.
NOTICE
Install a battery at either the host controller or on the Encoder Cable.
If you install batteries both at the host controller and on the Encoder Cable at the same time,
you will create a loop circuit between the batteries, resulting in a risk of damage or burning.
