General Information
1-6 Rev 2/01
1.4.1 Options and Accessories
The EF-Series Unit supports the following options and accessories:
♦
Communications Cards for host communications.
♦
Bracket for internally-mounted radio.
♦
Local Operator Interface (LOI) cable.
♦
Batteries.
♦
Solar Panels.
A variety of plug-in communication cards are available that allow you to customize the EF-Series
Unit installation for most communications requirements. The communication cards provide an
interface for the host communications port. These cards permit serial communication protocols, as
well as dial-up modem communications. One card of the following types can be accommodated:
♦
EIA-232 (RS-232) for asynchronous serial communications.
♦
EIA-485 (RS-485) for asynchronous serial multi-drop communications.
♦
Dial-up modem for communications over a telephone network.
Stand-offs on the Main Electronics Board allow the communications cards to be added easily. Refer to
Section 3 for more information.
A radio with an integral modem can also be mounted inside the enclosure using the optional radio
bracket (see Section 1.6). The radio bracket allows a radio up to 2.25 inches high to be mounted
securely in the battery compartment inside the enclosure. Power for the radio can be controlled
through the EIA-232 communications card. Clearance is provided for the radio antenna cable to exit
the bottom of the enclosure.
The local operator interface (LOI) port provides for a direct, local link using an Operator Interface
Cable between the EF-Series Unit and a personal computer. With the personal computer running the
ROCLINK Configuration Software, you can configure the functionality of the unit and monitor its
operation. The Operator Interface Cable is available as an accessory.
The EF-Series Unit enclosure can hold up to four sealed lead-acid batteries. The 12-volt batteries
provide approximately 7 amp-hours each, resulting in up to 28 amp-hours of backup capacity. The
batteries are mounted behind the electronics swing-out panel and are retained by the panel when it is
secured. The batteries are connected to a wiring harness that allows the batteries to be changed
without removing power from the unit. Refer to Section 1.7.5 for more information.
A solar panel can be installed to recharge the backup batteries; it connects to the POWER charge
inputs on the Main Electronics Board. Circuitry on the Main Electronics Board monitors and regulates
the charge based on battery voltage, charging voltage, and temperature. The typical panels used are
12-volt panels with output ratings of 5 or 10 watts. The panels are typically bracket-mounted on a pole
or pipe, and the wiring is brought into the bottom of the enclosure through a liquid-tight fitting.
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