Overview

The Automation & Electronics STRB was designed to provide turbine meter and pulse input expansion capability for Programmable Logic Controllers (PLCs). With a low power requirement and a wide operating temperature range, the STRB is ideal for use in remote 120 V_AC, 24 V_DC, or solar powered distributed I/O systems. It can also be used as a stand-alone MODBUS turbine meter and pulse input module.

The STRB is a microprocessor based four-channel accumulator card. This card is capable of accumulating pulses directly from either turbine meter magnetic pickups or dry contact closures. Jumpers are provided for each channel to select the type of pulse input being used. The onboard microprocessor accumulates these pulses, and makes them available to either host systems or master controllers via a serial data highway.

The data highway is implemented using the built in RS-485 serial port. All of the Smart Card series can be daisy chained together using these serial ports. Each Smart Card responds to MODBUS polls or commands from a master. An onboard address selector switch allows each card to be easily configured for any MODBUS address. This RS-485 data highway can then be used to create a scalable, flexible input / output expansion array.

Features