Omron R88D-KN01L-ECT-L User Manual page 303

External Feedback Pulse Type Selection
3323 hex
Setting 0 to 2
range
Size 2 bytes (INT16)
• Select the type of the external encoder to be used.
• For the set value, refer to the external encoder specifications.
Explanation of Settings
Set value
0
90° phase difference output type
1 Serial communications type (Incremental type)
2 Serial communications type (Absolute type)
*1 The supported speed is the internal feedback pulse speed [external encoder pulse/s] of the external encoder
that can be processed by the Servo Drive.
Check the instruction manual of the external encoder for the speed range supported by your external encoder.
For example, the maximum speed of a serial communications external encoder with a resolution of 0.01 µm is
4 m/s.
0.01 [μm/pulse] × 400 [Mpulse/s] = 4 [m/s]
When a serial communications speed of 5 m/s is required, choose a serial external encoder with a resolution of
0.0125 µm or lower.
*2 These are the directions that the Drive counts a 90° phase difference output.
Count-down direction
EXA
EXB
EXB is 90° ahead of EXA.
Precautions for Correct Use Precautions for Correct Use
• If you set this object to 1 or 2 when an external encoder with a 90° phase difference output is
connected, an External Encoder Connection Error (Error No. 50.0) will occur.
• If you set this object to 0 when a serial communications external encoder is connected, a
Phase-A Connection Error (Error No. 55.0), Phase-B Connection Error (Error No. 55.1), or
Phase-Z Connection Error (Error No. 55.2) will occur.
G5-series Linear Motors/Servo Drives With Built-in EtherCAT Communications
Unit
External encoder type
t11 t12 t13 t14
t2
t11 to t14 > 0.25 μs
t2 > 1.0 μs
9 Servo Parameter Objects
– Default
setting
Access RW
*2
Count-up direction
t11 t12 t13 t14
EXA
EXB
t2
EXB is 90° behind EXA.
t11 to t14 > 0.25 μs
t2 > 1.0 μs
csp pp hm
0 Data
attribute
PDO map Not possible
*1
Supported speed
0 to 4 Mpps (Multiplication × 4)
0 to 400 Mpps
0 to 400 Mpps
R
9
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