Omron R88D-KN ML2 Sries User Manual

8-27
8-4 Analog Control Parameters
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
8
Parameters Details
 Select the external encoder type. Ensure that the setting conforms to the external encoder type
which is actually used.
Refer to "5-4 Full Closing Control (P.5-9)".
Explanation of Set Values
*1. The maximum input frequency means the feedback speed [pps] of the external encoder, which can
be processed by the Drive. Confirm the instruction manual of the external encoder for the maximum
output frequency on the external encoder.
*2. These are the directions that the Drive counts the Scale of 90 phase difference output type.
*3
For the external encoder connection direction, set the direction so that count-up occurs when the motor
shaft is rotating in the CCW direction, and count-down occurs when the motor shaft is rotating in the CW
direction If the connection direction cannot be selected due to installation conditions, etc., the count
direction can be reversed using External Feedback Pulse Direction Switching (Pn326).
Precautions for Correct Use
Take note that if Pn000 = 1, the encoder count direction becomes opposite to the count direction
used for monitoring the total external encoder feedback pulses, etc.
If Pn000 = 0, the count direction matches the count direction for monitoring.
Even when the speed command is within the Drive’s speed command range, an acceleration alarm
occurs if the speed command exceeds the maximum speed of motor shaft rotation.
Pn323
External Feedback Pulse Type Selection
Setting
range
0 to 2 Unit 
Default
setting
0
Data
attribute
R
Full closing
Set value Description Maximum input frequency
*1
090 phase difference output type
*2*3
0-4 Mpps (Multiplication  4)
1
Serial communications type
(Incremental encoder specifications)
0-400 Mpps
2
Serial communications type
(Absolute encoder specifications)
0-400 Mpps
Count-down direction Count-up direction
EXB is 90° ahead of EXA.
t1 > 0.25 μs
t2 > 1.0 μs
EXB is 90° behind EXA.
t1 > 0.25 μs
t2 > 1.0 μs
t1
t2
t1
t2
EXA
EXB
EXA
EXB

Omron R88D-KN ML2 Sries Specifications

General

Brand	Omron
Model	R88D-KN ML2 Sries
Category	Servo Drives
Language	English