Mighty Module MM1800 Potentiometer Position Input Single Limit Alarm
MM1800 Potentiometer Position Input Single Limit Alarm
The MM1800 monitors the slide position of a potentiometer and trip a dpdt, 5 A relay when the input exceeds the desired level. Normal operation has the relay energized for the non-alarm condition and de-energized for an alarm condition. This provides a fail-safe alarm condition for loss of power to the module. The alarm has a set of red/green LEDs to indicate alarm status.
A deadband adjustment allows a deadband of 0.5% to 100% of span to be set into the module. The deadband is symmetrical about the setpoint.
With the latching option, the alarm has no deadband control. Once the limit has been reached the alarm latches and power to the module must be momentarily interrupted to reset the alarm.
The module includes filtering and conditioning to reduce susceptibility to transients and noisy operations. It also utilizes a stable 1 V power supply to excite the potentiometer. Any value potentiometer from 100 ohms to 100 kilohms can be used.
Tank level, valve or actuator control, monitoring or warning.
The module is designed to plug into a standard 11-pin relay socket. Part number MP011 is a molded plastic socket suitable for mounting on a flat surface or 2 3/4 inch wide PVC snap track (TRK48). Use CLP-1 hold down clip if needed. A Killark HK Series explosion-proof housing with dome and 11-pin socket is available (HKB-HK2D-11). A DIN rail mounted socket (P/N DMP011) is available for 35mm symmetrical rail.