Rockwell Automation 8720MC 8720MC Regenerative Power Supply User Manual - Manual (Page 70)

4-32 Wiring
Sequence Signal Wiring
Sequence Signal Wiring
Verify the following when installing sequence signal wiring:
• Twisted pair wires of 0.2 to 0.5 mm 2 should be used for the
signal line.
• Verify that the sequence signal wiring is separated from the
power wiring (main power supply wiring, control power wiring
and DC bus power wiring). Malfunction of the 8720MC-RPS
Regenerative Power Supply is possible if the control wires
are separated from the AC and DC power wires.
• Use a separate duct for the sequence signal wiring. It is
recommended to use a dedicated duct for the sequence signal
wiring.
• Do not route the sequence signal wiring near any equipment
which is producing electromagnetic interference.
Figure 4.11 shows a typical connection of sequence control signals.
Figure 4.11
Typical Connection of Sequence Control Signals
MC
1K
1K
1K
4.7K
4.7K
4.7K
RST
PWR
0V
24V
COM
IP IP
RDY RDY
FR
FR
4.64K
4.64K
4.64K
Load Equipment
Terminal Block TB3 of 8720MC-RPS
Regenerative Power Supply Unit Unit
8720MC-RPS Unit
+VC
0VC
To an external error detection sequence circuit