Yaskawa A1000 - Manual (Page 6)

6 YASKAWA TM.A1000SW.064 Electronic Line Shaft with Alignment A1000 Custom Software Supplement
2 Electronic Line Shaft
2 Electronic Line Shaft
‹ Overview
The Electronic Line Shaft (ELS) function allows a drive to precisely follow the speed, direction, and phase of a master
encoder (PG) signal. The follower can match its position (phase angle) to the master within several quadrature encoder
counts.
The ELS function is used in applications where the machinery being driven requires two mechanically isolated and
motor-driven moving parts to maintain a constant position relationship. The gear ratio between the master and the
follower is infinitely adjustable.
NOTICE: Damage to equipment. Equipment damage may occur if the ELS function is used with two or more motors mechanically
coupled to drive the same load. Do not use Electronic Line Shaft functionality to drive two or more motors that are mechanically
coupled to the same driven load.
In addition, a gear ratio adjustment, or “draw”, can be added to the speed reference via parameter setting, analog input,
multi-function input MOP, or serial communication. It is also possible to run the drive in a pure speed follower mode for
applications that do not require matched position.
Figure 1
Figure 1 Typical Configuration Connection
Master Drive
A1000
PG-X3
M
M
PG
Input Channel
Pulse Monitor Output
Channel 2 Input
Channel 1 Input
PG
Follower Drive
A1000
PG-X3
PG-X3