The Multi-Feeder Selector Unit  is designed to allow communications with several Code of Practice 3 & 5 electricity meters via one telephone line. It operates by monitoring the communications from an attached modem. When it detects a command sequence, the required channel relay closes allowing communications with the meter on that channel.

With the addition of a plug-in module, the unit provides pulse summation facilities, allowing for example summated kVAh to be calculated across a two feeder site with relay output. The summation characteristics are programmable allowing upto 6 input channels and 2 output relays.

Features:

• The unit is designed to operate from either 110V or 230V supply via selectable links.
• Simple RS232 3 wire operation, provides DCD signal to meters if required.
• Selected RS232 rate option, 1200, 2400, 4800 or 9600 baud.
• Simple configuration via RS232 terminal eg. Windows Hyperterminal
• Watchdog monitor to ensure reliable remote operations.
• Can be cascaded to allow 8 metering devices on one PSTN line.
• All connections to the unit are by a two-part PCB plug/socket arrangement with screw terminals for ease of installation.
• Visual indication of selected channel to assist in communications diagnostics.
• Unit designed for long term remote operations with diagnostic capability.