Nidec SM-Applications Series User Manual

SM-Applications Modules & Motion Processors User Guide 95
Issue Number: 4
Safety
Information
Introduction Installation
Getting
Started
Parameters
DPL
Programming
Communications
Freeze and
Marker
CTSync
Inter-option
Synchronization
Diagnostics
Migration
Guide
Quick
Reference
Index
Figure 8-4 Apps Lite/Apps Lite V2 and Digitax St Indexer Feedback Freeze Input
The encoder revolution counter is cached into Pr 90.19 and the encoder position is
cached into Pr
90.20.
The freeze position of both the reference and feedback encoders can be captured on
the rising or the falling edge of the freeze pulse. This is determined by setting parameter
Pr
81.43 to either 0 (rising edge) or 1 (falling edge). Pr 81.42 enables the position to be
written to Pr
90.19 and Pr 90.29 and the revolution counters to be written to Pr 90.20
and Pr
90.30.
When a freeze input is seen Pr
90.18 and Pr 90.28 are set to 1 automatically so that the
position can be written to Pr
90.19 and Pr 90.29 and the revolution counters can be
written to Pr
90.20 and Pr 90.30. Pr 90.18 and Pr 90.28 must be reset to zero if the user
wants to update the data again on the next freeze pulse.
Feedback
encoder
E
Internal drive
encoder
position
counter
Freeze pulse
#81.43
#90.48
#90.18
#90.20
#90.19
0
1
0
1
0
1
Feedback encoder
freeze position
Position
Module
Detection
select
Set on detection
Reset to arm
freeze
Internal drive
encoder
revolution
counter
Feedback encoder
freeze turns

Nidec SM-Applications Series Specifications

General

Brand	Nidec
Model	SM-Applications Series
Category	Control Unit
Language	English