Rockwell Automation 284 ArmorStart User Manual - Manual (Page 444)

F-4 24V DC Control Design Considerations
System Design Considerations
When Using 16 AWG Control Wiring The use of #16 AWG requires more consideration when determining
the number and location of the power supplies since it is effectively
limited to 125 feet. Re-working example 1 using #16 AWG shows
that two power supplies will be required.
Figure F.4
Other System Design
Considerations To minimize the dc power ampacity requirements staggering the
starting (sequenced on) of the ArmorStarts is recommended but only
if the application does not require all the ArmorStarts to be
commanded to start at the same time.
The separation of the control power and DeviceNet™ power is
recommended as a good design practice. This minimizes the load on
the DeviceNet supply, and prevents transients which may be present
on the control power system from influencing the communication
controls.
Conveyor
Section 1
Conveyor
Section 2
Conveyor
Section 3
Conveyor
Section 4
Conveyor
Section 5
24 vDC
Power
Supply
# 16 AWG
# 16
AWG # 16 AWG # 16 AWG
24 vDC
Power
Supply
24V DC
Power
Supply 24V DC
Power
Supply
Distance 1 Distance 2 Distance 3 Distance 4 Distance 5 Wire Length
Run 1 25 ft (7.6 m)
= 25 ft
(7.6 m)
Run 2 25 ft (7.6 m)
= 25 ft
(7.6 m)
Run 3
50 ft
(15 m)
= 50 ft
(15 m)
Run 4 0 ft (0 m) * 2
+50 ft
(15 m)
= 50 ft
(15 m)