Syn-Tech Systems FuelMaster FMU-2500 Classic Installation Manual page 115

9. Refer to the wiring diagram in Figure 4-34, and the wire connections noted in step 9 under Mounting
the Pedestal. Connect the Master FMU/EIU communications cable routed from the EIU Pedestal
Cover and Wiring Assembly to a 5-pin connector of the I/O Silver Board receptacle selected in step 6:
a. Connect the wire from J2, pin 1 (Brn), to IN+.
b. Connect the wire from J2, pin 2 (Red), to IN-.
The GND pin is for connection of a cable drain. It is connected on one end (either end) only. The other
end is bent back over the cable and taped (not connected).
c. Connect the drain to GND on one end only.
d. Connect the wire from J2, pin 4 (Yel) to OUT+.
e. Connect the wire from J2, pin 5 (Gray) to OUT-.
10. Plug the 5-pin connector into the receptacle selected in step 6.
11. Verify jumpers are installed on S1, SATELLITES INSTALLED JUMPERS, in the upper right corner of
the Satellite I/O Control Board for each corresponding RS-422 connection to the I/O Silver Board.
12. Re-install both electrical access covers in the Master FMU pedestal.
13. Close and lock the Master FMU pedestal and upper cabinet doors.
Wire Connections at Accessory Controller
Selecting a 0 second momentary will result in no momentary being applied. Any other selection will
provide a momentary equal to the duration selected. A 5 second momentary performs well for most
applications.
The EIU activates the accessory controller by providing a momentary power signal to the circuit that
normally activates a starter relay. This is sometimes illustrated as the contacts for a momentary
pushbutton switch. The momentary is selectable in the length of time it is applied to the starter relay.
Selectable lengths of time are: 0, 1, 5, 8, 11, 14, 17, and 20 seconds. Selecting a 0 second momentary
will result in no signal.
Two 14-AWG THHN wires were routed to the accessory controller from the EIU in Pulling Wires and
Finishing Conduit. One of these wires (orange) is constantly hot. The other (blue) is the switched wire
that carries the activation signal to the accessory controller after EIU activation. Perform the following:
1. Connect the orange 14-AWG wire from the EIU to a power junction in the accessory controller.
2. Connect the blue 14-AWG wire from the EIU to the accessory controller starter relay input.
Configure Master FMU for EIU
The EIU will not function until the Master FMU is configured to control it. Configuring the Master FMU is a
startup function covered in Section V, Initialization.
FuelMaster
®
Installation Manual
NOTE
NOTE
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