Connecting axis-specific discrete i/o – Rockwell Automation 999 IMC S Class Compact Motion Controller (Cat. No. 4100-999-122) User Manual
Page 67
 
Installation and Hookup
4-25
Publication 999-122 - January 1997
Connecting Axis-Specific 
Discrete I/O
The IMC-S/23x provides home and overtravel limit switch inputs and 
a drive fault input for each axis. These axis-specific discrete inputs are 
optically isolated and filtered to eliminate switch bounce. In addition, 
the IMC-S/23x provides a normally open relay contact drive enable 
output for each axis. 
Connect axis-specific I/O to the IMC-S/23x using a separate 
4100-CCAxxF pre-engineered cable assembly for each axis as shown 
below.
The I/O power supply connected to the IMC-S/23x (see Connect the 
I/O Power Supply later in this section) provides 24V DC at up to 3 
Amperes total maximum for powering the axis-specific discrete I/O. 
This power is available on the Red and Black conductors in the 
4100-CCAxxF cable assembly as shown above. Note that a user- 
supplied terminal block (TB) is generally required to connect the I/O 
devices to the 4100-CCAxxF cable assembly.