Honeywell HC900 Functional Overview

Functional Overview 

- Supports split-rack redundancy 

- Supports Honeywell FDM (Field Device Manager) with HART IP 

- Supports HART function blocks (Commands 3 and 48) 

Note: HART support requires a UIO module 

- Non-redundant and redundant architectures 

- Sequence of Events Support (SOE) 

Note: Supported only in non-redundant UIO configurations.

- Redundant and Non-Redundant Safe General Purpose IOs 

- PID control with advanced Accutune III auto-tuning 

- Secure peer-to-peer communication between ControlEdge HC900 controllers 

- External watchdog timer with independent clock to detect unexpected CPU lockups 

- Adjustable recipe pool memory allocates memory for recipes, SP profiles, sequences, and schedules to meet your needs 

- Up to 4608 points can be connected via remote I/O 

- Boolean logic programming. powerful combination of over 100 algorithms

- Advanced floating-point maths functions.

- Extensive alarm and event monitoring 

- Up to 2304 galvanically isolated analogue input points 

- Up to 1008 redundant UIO points 

- New I/O voting and output verification function blocks.

- Remote I/O racks with wires for extended distances.

- Star or ring topology on the IO network using recommended switches 

- Scanners and I/O plugged in and out while powered 

- LED on/off indicators on digital I/Os 

- Graphical Function Block Configuration 

- Open 10MB or 10/100MB Ethernet interface using Modbus/TCP. Point-to-point communication via Ethernet 

- Priority email alarm/event messages

- Ramp/soak setpoint programmer 

- Setpoint scheduler with multiple outputs 

- Sequencer with 16 outputs each 

- Modbus read/write parameters can be assigned to fixed or custom addresses for HMI or monitoring software access.

- Modbus TCP Initiator 

- Gas flow function block compliant with American Gas Association specifications. (Non-safety configurations only).

- Calendar module for triggering events 

- Non-intrusive process/safety worksheets to handle both process and safety configurations.

- Built-in version control 

- Quick update - 10 ms digital update and UIO (900U02-xxxx) 100 ms analogue update 

Note: Low level AI update time is 0.5 seconds.