The BFD is a large 977.9 x 482.6 mm (38.5 x 19") LED display (128 x 64 pixel resolution) which is driven from the RS485 port of a G3. The BFD is built using 32 display boards in an 8 column by 4 row configuration. When used with a G303, the BFD will display the contents of the current G3 page. When used with larger G3s, the desired information is selected by using a "display primitive" on the current G3 page. Multiple BFDs can be driven from a single G3 (see Using Multiple BFDs with a single G3). The exact number is dependent upon the lengths of the individual wiring runs.
The display is housed in a welded steel enclosure and the display window (0.118" thick red acrylic) is sealed to the enclosure using a gasket and bezel strips. The gasketed rear panel is bolted to the enclosure. The ventilation slots and internal fan are designed to provide adequate cooling in a normal industrial environment. The enclosure is designed to hang from an overhead support. The BFD enclosure can be easily converted for indoor NEMA 4 operation using the optional BFD NEMA 4 conversion kit. The kit includes a sealed cover plate (to plug the vent hole), an external "cabinet cooler" (to replace the internal fan) and a DIN-rail mounted power supply to operate the "cabinet cooler".
Power to the BFD is provided by a universal AC input power supply. The AC power and the G3 RS485 cable enter the enclosure through separate conduit fittings. AC power connects to the power supply via a removable 3 position terminal block. The RS485 signal connects to the communication board via either an RJ45 modular plug or a removable 2 position terminal block.

Easy connect to EZPLC for extremely low cost stand-alone production monitoring system. Combination of EZPLC and EZMarquee make a terrific system which pays for itself in less than 90 days! Monitor rate per hour, up-time/down-time, pass rate, alarms and archive data.
Monitor 8 Analog Process Variables, Display on a Tri-color Marquee and Turn 4 Alarms ON
Let's read 4-20mA current signals from up to 8 different temperature/pressure flow gauges, scale the readings, display on a 2" red LED marquee, and activate up to 4 Relay outputs for your alarms and sirens when your process readings exceed programmed limits. The following stand alone system lets you take 4-20mA current inputs from up to 8 different analog signals. All these sensors will feed input signal to EZPLC which is connected to EZMarquee via RS232/485 communication port. EZPLC can be used to scale all the inputs and display them on a 2" red LED marquee and can also turn Relay outputs to trigger alarms/sirens etc. Take input feed from up to 8 Analog devices (pressure transducer, LVDT, etc), where you can display your process variables on a 2" EZMarquee via RS232/422/485. You also get 4 Relay outputs (AC/DC) to trigger sirens/alarms when your process variables go over your set points!