Omron VARISPEED F7

6-134
6
 Speed Follower Function
The speed follower function allows a slave drive to precisely follow the speed of a master encoder or drive.
The speed ratio between the master and the follower is infinitely adjustable. In addtion, a gear ratio adjustment
can be added to the speed reference via parameter, analogue input, multi-funtion digital input (MOP) or serial
communication.
Fig 6.92 Connection for Typical Configuration
Related Parameters
Parameter
No.
Name
Factory
Setting
Change
during
Opera-
tion
Control Methods
V/f
V/f with
PG
Open
Loop
Vector
Closed
Loop
Vector
S1-01 Follower Mode Selection 0 No Q Q Q Q
S1-02 Master Encoder PPR 1024 No Q Q Q Q
S1-03 Ratio Numerator (Upper 4 digits) 1000 Yes Q Q Q Q
S1-04 Ratio Denominator (Upper 4 digits) 1000 Yes Q Q Q Q
S1-05 Ratio Numerator (Lower 4 digits) 0 Yes A A A A
S1-06 Ratio Denominator (Lower 4 digits) 0 Yes A A A A
S2-01 Digital Ratio Adjsutment 0.00 % Yes A A A A
S2-02 MOP Adjust Time 50.0 sec Yes A A A A
S2-03 Gear Ratio Adjustment Ramp Time 10.0 sec Yes A A A A
S2-04 PG Monitor Channel Selecction 1 Yes A A A A
S2-05 Ratio Change Speed Agree Width 0.5 Hz Yes A A A A
PG-X2
F7
PG
M
PG-Z2
F7
PG
M
PG-Z2
F7
PG
M
Master Drive
Slave Drive 1
Slave Drive n
Pulse Monitor Output
Input Channel
Pulse Monitor Output
Input Channel 1
Input Channel 1
Input Channel 2
Input Channel 2