621-6575RC Honeywell Redundant Controller IPC 620

The 621-6575RC is Honeywell's redundant-capable CPU module for the IPC 620 distributed control system. With hot-standby architecture, it delivers:

• Bumpless switch-over < 10 ms
• 32 MB user memory for complex batch & continuous strategies
• IEC 61131-3 languages (LD, FBD, ST, SFC)
• On-board Ethernet, RS-485 and Modbus master/slave
• SD card slot for firmware upgrades and data logging

Ideal for power generation, chemical plants, oil & gas platforms that require fault-tolerant control with no process interruption.

• Hot-standby redundancy - zero process bump on failure
• 32 MB memory - handles 10,000+ I/O tags
• Native Modbus & OPC UA - plug into any DCS/SCADA
• SD card - firmware updates without a laptop
• Web diagnostic page - remote health view
• Class I Div 2 - safe for hazardous areas
• Same slot size as standard 621-6575 - easy upgrade

• Power-generation turbine control
• Refinery unit operations
• Offshore platform process & safety systems
• Chemical batch reactors
• Water/waste-water treatment DCS upgrades

• Rack: IPC 620 (4, 7, 10 slots)
• I/O: any IPC 620 digital, analog, HART modules
• Partner CPU: 621-6575RC (second slot for redundancy)
• Programming: Honeywell Control Builder R610 or later

• 621-6575RC controller
• Removable terminal plugs (Ethernet & serial)
• SD card 4 GB (pre-installed)
• Redundancy sync cable (order separately: 51305876-100)
• Calibration & conformance certificate
• Quick-start guide