Rockwell Automation 999 IMC S Class Compact Motion Controller (Cat. No. 4100-999-122) User Manual
Page 54

4-12
Installation and Hookup
Publication 999-122 - January 1997
Select the Encoder Power Voltage
The IMC-S/23x may be configured to provide either 5V or 12V DC
power (at 1 Ampere total maximum) for the axis feedback encoders via
switch SW5 on the power supply module. SW5-1 selects the encoder
power voltage for axes 0 and 1, and SW5-2 for axes 2 and 3. Regardless
of the encoder power voltage selected, however, the encoder outputs
must be 5V (TTL) level signals. The IMC-S/23x is shipped from the
factory configured for 5V encoder power for all axes (both switches
down), as shown below.
To select 12V encoder power voltage for either axes 0 and 1 or axes 2
and 3, carefully move SW5-1 or SW-2 (respectively) to its up position
using a pen, small screwdriver, etc. For example, the figure below shows
axes 0 and 1 configured for 12V encoder power and axes 2 and 3
configured for 5V encoder power.
Power Supply
Module
1
2
+12V
+5V
Axes Axes
0 &1 2 & 3
Axes
Axes
0 & 1 2 & 3
1
2
+12V
+5V
SW5
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