The modular hardware of the Process Supervisor comprise a chassis, a Connect Module and up to two Processor Modules.

Connect Module
All external connections to the Processor Module are via the Connect Module, allowing the removal of a processor unit without any disturbance to the external cable interface. All the communication connectors and termination plug-ins are RJ45 format. The RJ45 connectors on the front panel can be wired for ALIN, Modbus RTU or Profibus DPV1 use, according to specification at the time of order. The pairs of RJ45 connectors on the left-hand side of the module are assigned to the left-hand processor and the right-hand connectors to the right-hand module. Each pair of connectors is wired in parallel to facilitate easy daisy chaining. Each processor has two 24V-supply connections. Additionally, a separate connector allows external battery, watchdog, and two software configurable alarm relays.

Processor Module
Up to two Processor Modules can be installed on a chassis and can operate either independently (simplex), or in redundant mode. In redundant mode, one of the processors acts as a primary which is backed-up by the secondary in case of failure.

All external interfaces to the Processor Modules are via the Connect Module.

Processor modules can be supplied by two external 24V-power supplies to ensure operation in the event of power failure. The LEDs on the front panel of the Processor Modules provide comprehensive status indication, allowing for rapid verification and diagnostics.

The start-up mode of the module is selected from the front panel switch.

Inside the processor, a plug-in memory module holds both control strategies and operating software, enabling their rapid transfer to a spare instrument.

Remote I/O
The Process Supervisor is designed to work with EurothermSuite Process Interface (2500) units. Up to 16 Process Interface units may be multi-dropped from the Process Supervisor and it can work with any third party I/O which supports Profibus DPV1 or Modbus RTU.