DM – Data Acquisition and Control Modules
DM – 1 for the supervision of dry contact inputs;
DM – 2 for the supervision of analog signal inputs;
DM – 3 with output contacts for load switching.
Functions and Characteristics:
– Communication with a remote data acquisition and control system through the RS-485 serial interface, with Modbus RTU protocol (standard) or DNP3.0 (optional);
– Remote monitoring of the status of dry contacts (alarms, trips, signalization, and contact actuation time-counting).
– Remote measurement of analog signals (outputs of transducers, gas monitors, levels, etc.).
– Remote activation of potential-free output contacts (on/off motors, lamps, etc.).
– Up to 31 DM´s can be interconnected to the same communication network.
– Communication distance up to 1,300 meters, measured between the extreme points of the network.
– Digital and analog input circuits, output contacts, and RS-485 interface with galvanic insulation.
– Interconnection of DM’s through a twisted pair cable or fibre optic cable using electro-optical converter.