
Rockwell Automation Publication 8720MC-RM001K-EN-P - September 2018
71
Connect the 8720MC-RPS Unit
Chapter 5
Install Ribbon Cables
For a single units or for leader unit when multiple units are connected in
parallel, the regulator board is connected to the power interface board (PIFS)
with a ribbon cable. Also, ribbon cable is used for connecting between the
power interface boards of the leader unit and the follower unit and between the
power interface boards of the follower units.
• Ribbon cable connects between the regulator board (BDSR) and power
interface board (PIFS)
• Ribbon cable connects between power interface boards (PIFS).
Figure 39 - Connecting Ribbon Cables (series #)
Figure 40 - Connecting Ribbon Cables (series B)
BDSR
PIFS
CN1
CN2
CN1
CN2
CN3
Unit 1 (leader unit)
Unit 2 (follower unit 1)
Unit 3 (follower unit 2)
PIFS
CN1
CN2
CN3
PIFS
CN1
CN2
CN3
Parallel Connection
of 3 Units
(8720MC-RPS065BS or 8720MC-RPS190BS)
Parallel Connection
of 2 Units
(8720MC-RPS065BS or 8720MC-RPS190BS)
Single Unit
(8720MC-RPS065BS or 8720MC-RPS190BS)
RST PRG ENT
㻾㻱㻭㻰㼅
㻲㻭㼁㻸㼀
㻼㻾㻻㻳㻾㻭㻹
㻭
㼂
㼗㼃
Regulator Board (BDSR)
PIFS
3
N
C
2
N
C
CN1
Unit 1 (leader unit)
Unit 2 (follower unit 1)
Unit 3 (follower unit 2)
Parallel Connection
of 3 Units
(8720MC-RPS065BS or 8720MC-RPS190BS)
PIFS
3
N
C
2
N
C
CN1
PIFS
CN2
CN3
CN1
CN2
CN1
Parallel Connection
of 2 Units
(8720MC-RPS065BS or 8720MC-RPS190BS)
Single Unit
(8720MC-RPS065BS or 8720MC-RPS190BS)