CJ1W-NC434 Omron, CJ1W-NC434 Datasheet - Page 155

• Manufacturer Part Number: CJ1W-NC434
• Description: High Speed Pulse Train 4 Axes
• Manufacturer: Omron

Specifications of CJ1W-NC434

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4-6 Absolute Encoder Origin Setting
CJ Position Control Units OPERATION MANUAL (CJ1W-NC214/234/414/434)
Outline of Operation
Applicable Servomotors
For the PCU of pulse-output type, the position control loop is at the driver side regardless of
whether the application is of semi-closed loop or full-closed loop method.
However, this PCU can input encoder feedback.
You can use either an incremental encoder or absolute encoder.
If you use an absolute encoder, the absolute data can be retained by the battery backup even
when the power supply to the CPU Unit (PCU) is shut OFF. You can determine the present
position by reading this absolute data from the absolute encoder when the power supply to the
CPU Unit (PCU) turns ON.
Unlike the case of using an incremental encoder, if the origin has been determined once, you
need not perform Origin Search after the power supply turns ON.
You can determine the origin of an absolute encoder system by Origin Search in the same
manner as when you use an incremental encoder.
Load the command position after the origin determination, and the offset of the mechanical
origin that was read from the absolute encoder, into the axis parameter [ABS Encoder Origin
Position Offset].
Accordingly, [ABS Encoder Origin Position Offset] is a read-only parameter.
The Servomotors which are equipped with an absolute encoder and connectable to the PCU
are listed below.
Manufacturer
OMRON
PCU
OMNUC G5 Series
OMNUC G series
OMNUC W series
ABS data
SEN signal
Battery
Series
Servo Drive
R88D-WTxxx
R88D-KTxxx
R88D-GTxxx
Servo Drive model
4-6 Absolute Encoder Origin Setting
Motor (ABS encoder)
M
Battery backup
R88M-KxxxxxS
R88M-KxxxxxT
R88M-KxxxxxC
R88M-GxxxxxS
R88M-GxxxxxT
R88M-WxxxxxS
R88M-WxxxxxT
Servomotor model
4-42
4