Rockwell Automation 1771-VHSC , D17716.5.74 Very High S - Manual (Page 33)

2–7 Installing the Very High-Speed Counter Module
Figure 2.4
Cable Grounding
17798
Ground Shield at
I/O chassis
mounting bolt
Shield and drain
twisted into single
strand
Field Wiring Arm
Refer to Wiring and Grounding Guidelines, publication 1770-4.1 for
additional information.
When installing your module in an I/O chassis:
1. First, turn off power to the I/O chassis:
!
ATTENTION: Remove power from the 1771 I/O
chassis backplane and wiring arm before removing or
installing an I/O module.
Failure to remove power from the backplane could
cause injury or equipment damage due to possible
unexpected operation.
Failure to remove power from the backplane or wiring
arm could cause module damage, degradation of
performance, or injury.
2. Place the module in the plastic tracks on the top and bottom of the
slot that guides the module into position.
3. Do not force the module into its backplane connector. Apply firm
even pressure on the module to seat it properly.
Installing the Module