The Harmony DCU is a microprocessor-based control unit that interfaces with local frame-mounted or Profibus network-connected S800/S900 I/O for monitoring and controlling a process on a standalone basis. Also available are interfaces to serial connected I/O such as Modbus and Allen Bradley DF1 protocols.
Designed for batch, sequential, and regulatory control, the Harmony DCU includes a full range of digital and analog control functions implemented by Controlware II application software. The Harmony DCU supports a redundant Ethernet process highway, with each Harmony DCU capable of interfacing with more than 1,000 I/O points.
- Redundant processors with automatic switchover
- Redundant power supplies with current sharing
- Redundant Ethernet network interface
- Interface to flexible, distributed I/O, including intrinsically safe options