Franklin Fueling Systems TS-DTU Noise Suppression Cables TS-DRK - Manual (Page 5)

5
Installation
A new Noise Reduction DTU cable may need to be installed if there seems to be low DTU Quality problems. This cable
consist of two ferrites (magnetic rings) that isolate loading issues from either power line filters or switching power supplies.
This cable is to be installed at the incoming power connection so it isolates all the electronics in the dispenser.
Note: Take special notice that the power to the DTU does not go through the ferrites, it should branch before the ferrites.
Incoming 120VAC Power
from field junction box in
lower area of dispenser
Original Dispenser Power
Cable/Connector
New Dispenser Power
Cable/Connector extention
Wayne Power Supply
Board
Incoming 120VAC Power
from field junction box in
lower area of dispenser
Original Dispenser Power
Cable/Connector
Original INCON Dispenser
Power Cable/Connector
Wayne Power Supply
Board
Power to dispenser
sensitive electronics
Power to dispenser
soleniods and other
devices
New Installation Method
Original Installation Method
Power Line Filter
Power to dispenser
soleniods and other
devices
Power Line Filter
Power to dispenser
sensitive electronics
All circuits in shaded area
are isolated from DTU
signal
Figure 8: DTU Power Cable Installation in Wayne Dispenser