Rockwell Automation FlexPak 3000 DC Drive Version 4.3 - Manual (Page 86)

B-14 FlexPak 3000 DC Drive Hardware Reference Version 4.3
B.5.6.3 Pulse Encoder and AC Tachometer Feedback Kits (Model Numbers 907FK0101
and 907FK0301)
The tachometer cables for these kits must be run as screened cable or in a continuous
conductive conduit. A ground wire must be run with the tachometer wires and
terminated to ground at both ends. The screen or conduit must be terminated at both
ends to ground as discussed above and shown in figure B.10.