The ETR Smarter Logic plus PID micropro-cessor-based controller series incorporates a single, easy-to-read, 4-digit LED display, indicating process value or set point value. The Smarter Logic technology enables a process to reach a predetermined set-point in the shortest possible time, with minimum overshoot during powerup or external load disturbance. These units are powered by universal 90-250 Vdc/Vac supply. Up to three outputs are avail-able for control and alarm. The second output may be used as cooling control, or an alarm. Output selections are relay, triac, 5 V logic out-put, linear current, or linear voltage to drive an external device. There are six types of alarms, plus a dwell timer.
Digital communications RS-485 or RS-232 are available as an additional option. These options allow the units to be integrated with a supervisory control system and software.A programming port is available for automatic configuration, calibration and testing without the need to access the keys on front panel.By using proprietary Smarter Logic PID auto tuning technology,temperature overshoot and undershoot is minimized.