Digital I/O module M500DMR

DIN rail mounted

The System Sensor M500DMR Analogue Addressable Dual Input, Dual Output Module supervises two input circuits from external switch devices and also provides two unmonitored single pole volt-free changeover contacts for external devices. Input channels are capable of both latched and analogue supervision: there are three separate latched states, normal, open circuit and combined alarm/short. The analogue supervision continuously monitors the supervised circuit, returning a signal proportional to the circuit resistance. The module may be mounted in either a wall box, on a DIN rail, or inside any type of enclosure. Irrespective of the chosen mounting method, the address switch is both visible and accessible for selection. To assist maintenance and fault-finding, both the LEDs and the address switches are visible without removing the surface mounting box cover. The M500DMR incorporates a loop isolator that isolates the loop in and loop out connections in the event of a short circuit on either loop connection. Features Dual Input, Dual Output Module Input 2 (I2) and Relay 2 (R2) may be disabled individually using module DIP switches Incorporates an Isolator for the Analogue Addressable Loop Uses 2, 3 or 4 module address spaces Common mechanical platform for box, panel and DIN rail mount versions Decade Address switches visible and selectable in two planes Wide angle LED visibility