Maxsine EP3 AC Series, User Manual

Page: 112 / 246

Chapter 4 Running
102
4.10.3 The initialization of absolute encoder
In the following situation, the absolute encoder must be initialized.
The first time to start machine
“Alarm for encoder battery (Err48)” happens
“Alarm for encoder internal fault (Err41)” happens
“Alarm for motor overheating (Err49)” happens
When it needs to set the rotating number of the absolute encoder as zero
Initiate through Fn36. Steps should refer to section 3.6.1.
4.10.4 Receiving and sending order of absolute encoder
Next it will explain the sequence from receiving the output of absolute encoder to the
absolute data sent to the upper position by servo unit.
（
1
）
Summary for absolute signal
As the following picture shows, the serial data of absolute encoder outputted by servo unit
and pulse are outputted from ‘OA, OB, OZ’
Signal
name
conditi
on
Signal contents
OA+
OA-
Initial
period
Serial data
Initial incremental pulse
Usually
period
incremental pulse
OB+
OB-
initializ
ation
Initial incremental pulse
Usually
period
incremental pulse
CZ Usually
period
Origin pulse
OZ+
OZ-
2
）
The sending order and contents of absolute data