Rockwell Automation 2097-Vxxx Kinetix 300 EtherNet/IP Indexing Servo Drive User Manual - Manual (Page 143)

Rockwell Automation Publication 2097-UM001D-EN-P - November 2012 143
Configure and Start Up the Kinetix 300 Drive Chapter 6
Master Gearing Mode
Examples When using a Bulletin MPL encoder for master gearing, the Kinetix 300 planner
treats the 128 and 1024 pulse encoders as having 262,144 interpolated counts per
revolution for the purpose of calculating the gearing ratios.
User units in the MotionView software, General category, is not used in Master
Gearing mode, therefore any transmission ratio besides 1:1 needs to be
configured in the master-to-system units.
Master Gearing Example 1
A Bulletin MPL multi-turn motor is connected to the slave drive and outputs
128 pulses per revolution (ppr). A master encoder outputs 128 ppr TTL to the
master gearing inputs on the Kinetix 300 slave drive. A 1:1 master encoder to
motor revolution is required.
The drive interpolated counts are 262,144 counts/rev and the master encoder is
128 x 4 (512) counts/rev. The [Master] parameter is 1 and the [System]
parameter is 262,144/512 or 512.
Master Gearing Example 2
A Bulletin MPL multi-turn motor is connected to the slave drive and outputs
1024 ppr. A master encoder outputs 2048 ppr TTL to the master gearing inputs
on the Kinetix 300 slave drive. A 1:1 master encoder to motor revolution is
required.
The drive interpolated counts are 262,144 counts/rev and the master encoder is
2048 x 4 (8192) counts/rev. The [Master] parameter is 1 and the [System]
parameter is 262,144/8192 or 32.
Master Gearing Example 3
The same configuration as used in example 2 exists, however, the slave motor that
generates the 1024 ppr is connected to a 5:1 gear box. Therefore, 1 revolution of
the gear box requires 5 motor revolutions.
The drive interpolated counts are 262,144 counts/rev x 5 motor rev/1 output
gear box revolution. The master encoder is 2048 x 4 (8192) counts/rev. The
[Master] parameter is 1 and the [System] parameter is 262,144 x 5/8192 or 160.
Configure Master Gearing Mode
This procedure assumes that you have configured your Kinetix 300 drive for
Master Gearing mode, configured your Logix Ethernet module, and applied
power to the system.