Installation manual

FuelMaster
®
Installation Manual
100

Equipment Interface Unit (EIU) Installation
EIUs provide secure access to accessory devices such as
gate openers, car washes, or door openers. They do not
directly control these devices, but activate them by
providing a 1, 5, 8, 11, 14, 17, or 20 second momentary
power signal to the accessory controller. The accessory
controller must be capable of activation through a
momentary input signal.
EIUs cannot operate independently. Like Satellite FMUs,
they are dependent upon connection to a Master FMU.
The Master FMU must be accessed with a serial
connection to enable EIU operation. Section V,
Initialization, contains procedures for enabling EIU
operation.
EIUs are accessible with a Prokee
®
, or with an ID number
programmed into the Master FMU. They are not
accessible with Smartcards or AIM2™. A controlling
access point will perform the same functions as an EIU
through AIM2™ activation.
EIUs have an internal heater. With the heater on, an EIU
consumes about 0.15 amp at 120 VAC. The heater draws
over 75% of the maximum power consumption, and will
not be on during warm weather. An EIU can control a
maximum load of 5 amps. Motors cannot be controlled
directly by the EIU.
EIUs have three major components (see Figure 4-25): a Cabinet, a Pedestal Cover and Wiring Assembly,
and a Pedestal. EIUs are constructed of lightweight, corrosion resistant aluminum.
There are no access panels in the EIU Pedestal. Wires in conduit must enter the Pedestal from the
bottom of the mount plate, and connect to the Pedestal Cover and Wiring Assembly at the top of the
Pedestal.
Inside dimensions of the EIU Pedestal are 3-1/2 inch x 3-1/2 inch. It may be necessary to bundle the three
conduit together to fit inside the Pedestal. See Figure 4-26 for EIU footprint dimensions.
Pulling Wires and Finishing Conduit
Verify that all required conduit are in place. Refer to Section III, Site Planning and Preparation, for
conduit requirements. There should be three conduit: one for incoming AC power from a circuit breaker,
one for communications from the Master FMU, and one to control the designated accessory.
1. Pull all wires:
a. AC Power. Pull three 12 AWG THHN wires to the EIU from the circuit breaker panel; black for
hot, white for neutral, and green for ground. If the distance from the power source to the EIU
exceeds 400 feet, increase the size of the power wires to 10 AWG. Ensure
approximately 3 feet of excess wire is extending from the conduit to facilitate wire
connections after EIU installation.
b. Master FMU/EIU Communications. Pull two twisted pair with drain 18 AWG shielded RS-422
cable from the Master FMU to the EIU. If the cable length is under 150 feet, 22 AWG cable with
the same specifications may be used. At the EIU end, ensure approximately 3 feet of excess
cable is extending from the conduit to facilitate wire connections to the EIU. At the Master FMU
sufficient cable will be necessary to make connections to an I/O Silver Board mounted over the
Figure 4-25.
EIU Components
276