Elkhart Brass Vulcan 8593-xx EXT - Manual (Page 10)

Page 10
C. RF Receiver/Control Module
The RF Receiver/Control Module uses a state-of-the-art PIC (Programmable Integrated Circuit)
chip design. This device allows numerous control features while keeping circuit board size to a
minimum. Relays within this box provide motor reversing control for the Up/Down, Left/Right
and Straight Stream/Fog functions.
All functions are sent to the RF Receiver/Control Module via an encoded radio frequency link.
The radio link reduces the number of control wires down to just the two power leads,
dramatically simplifying the installation procedure. The link also allows wireless control from
up to ¼ mile away using a battery powered handheld transmitter.
An encoder, part of the horizontal motor, provides horizontal motion control feedback. The
encoder allows the user to set limits at any combination of angles on the Vulcan RF monitor.
The counter in combination with the PIC controller enables the monitor to oscillate between
limits that are set directly from the remote transmitter. No mechanical stops to adjust. The
Vulcan RF aerial monitor does not have field programmable travel limits.
The encoder enables the PIC controller to remember a home or stow position. This stow position
can be used as a storage position for the monitor during transport. Once the “Stow” feature is
activated, the monitor will automatically return to the home or stow position.
The control system also provides secondary motor protection with the use of electronic current
sensing circuitry. If the monitor encounters an obstruction before reaching a limit, this circuitry
quickly senses motor stall current and automatically shuts off power to the motor. As soon as the
control switch is released, the circuit resets to allow subsequent operation of the monitor.
Caution:
Any modification of the enclosure will destroy the NEMA 4 rating and will void the warranty
coverage of the RF Receiver/Control Module.
The following additional functions/features are provided in the RF Receiver/Control Module:
Reverse Polarity Protection: If battery connections are reversed, this feature
prevents power from being applied to circuits, and prevents damage to electronic
components.
Circuit Board Moisture Protection: The circuit board and circuit components
are protected from moisture by an acrylic resin conformal coating. All relays
have sealed covers.
DC to DC Converter Function: An optional 24 to 12VDC converter board can be added
to the RF receiver control module to allow 24 VDC power to the monitor. The converter
will supply enough 12VDC power to the monitor to run all motors simultaneously. It is
reverse voltage protected and meets SAE J1113-11 (Immunity to Conducted Transients
on Power Leads) requirements.