The SDAU Digital Alarm Unit accepts two input signals (freely selectable from 1 to 5 V, mV, thermocouple and RTD), and six alarm detecting results are freely connected to AND or to OR. Then they are output to alarm relays (two points for standard). Each alarm detecting section detects upper and lower limits of absolute value, rate-of-change and deviation. Either a normally energized or de-energized is selectable for alarm output relays. Four points of alarm output, RS485 communication function or retransmission output can be optionally equipped. The display setter on the front panel can show input values and set/change parameters such as an alarm setpoint. The JHT200 Handy Terminal(*1) can also set/change parameters.

*1: The BT200 BRAIN Terminal can also be connected. The adapter for modular jack (E9786WH) is required for connecting the JHT200 or BT200 with SDAU.