Honeywell CC-PCNT02

Product Brief Introduction

Standby redundant backup central processing unit module exclusively paired with CC-PCNT01 primary controller module for Honeywell C200 fault-tolerant redundant rack architecture, continuously synchronizes all control logic, process data and alarm state with primary controller, automatically takes over full system control execution upon primary module hardware or communication failure to achieve zero production downtime operation.

Category: Honeywell

Description

Technical Specifications

Main Processor Core: 32-bit industrial real-time RISC microprocessor, 333 MHz fixed clock speed
On-Board System RAM: 128 MB ECC error correction SDRAM memory
Non-Volatile Flash Storage: 64 MB flash memory for control logic, system configuration and firmware images
Redundant Data Sync Cycle Interval: 2ms continuous bidirectional data synchronization with primary CC-PCNT01
Control Scan Cycle Compatibility: Matches full range 10ms – 1000ms user-configurable primary controller scan rates
Local I/O Slot Support: Synchronizes all data for up to 8 rack local I/O modules
Fieldbus Compatibility: Fully compatible with CC-PCF901 CF901 remote I/O fieldbus communication protocol
Operating Supply Voltage: 24VDC nominal, allowable operating range 20.4VDC – 28.8VDC
Power Consumption: Max 5.1W standby synchronized operational load
Isolation Rating: 1500 VAC processor core to backplane galvanic isolation
EMC Compliance: IEC 61000-6-2, IEC 61000-6-3 Class A industrial EMC standard
Certifications: CE, UL 508, CSA C22.2 No.142

Functional Features

2ms ultra-fast bidirectional data synchronization with primary CC-PCNT01 controller for identical real-time process state replication
ECC error correction RAM prevents memory corruption during long-term standby redundant operation
Battery-backed real-time clock maintains synchronized system timestamp matching primary controller clock value
Full passive backplane I/O data mirroring of all local analog and digital I/O module measurement and output values
Automatic seamless control takeover within maximum 20ms upon primary controller fault detection (hardware failure, power loss, communication disconnect)
Complete rack system diagnostic mirroring matching primary controller fault monitoring logic
Front panel multi-color LED indicators for standby sync status, run mode, fault condition and communication activity
Remote firmware update capability via Experion PKS engineering station without physical module removal from rack

Performance Parameters

Max Supported PID Control Loop Synchronization Capacity: 800 control loops matched to primary CC-PCNT01 limits
Alarm Record Mirror Buffer Capacity: 10,000 historical alarm records fully synchronized with primary controller
Max Primary-to-Secondary Control Transfer Latency: 20ms maximum switchover time
Operational Ambient Temperature Range: 0°C to +60°C; storage temperature -40°C to +85°C
Relative Humidity Operating Range: 5% – 95% non-condensing
Vibration Resistance: 10–150Hz, 1g sinusoidal vibration compliant with IEC 60068-2-6

Material Composition

Main Multilayer PCB: FR-4 high Tg flame retardant fiberglass substrate, lead-free industrial soldering process
Front Panel Housing: UL94 V-0 flame retardant ABS plastic enclosure
Rack Mount Support Frame: Cold rolled steel black electrostatic anti-rust coating
Backplane Connector Contacts: Copper alloy with 1.2μm gold plating for high-speed synchronization data transmission
Internal Electronic Components: Wide-temperature RISC CPU, ECC SDRAM, industrial flash memory, lithium RTC backup battery, differential synchronization transceivers

Structural Characteristics

Double-width rack module dimensions: 45mm (W) × 130mm (H) × 135mm (D)
Front panel multi-color LED array: SYNC amber standby synchronization LED, RUN green operational LED, FAULT red fault indicator LED, COMM blue fieldbus communication LED
Rear dual gold-plated edge connectors for full C200 backplane bus communication and 24VDC power supply input
Front-panel externally accessible lithium real-time clock battery compartment for field replacement without rack module extraction
Dual heavy-duty anti-vibration locking latches for stable rack mounting under continuous industrial vibration

Working Principle

CC-PCNT02 receives synchronized 24VDC rack power supply alongside primary CC-PCNT01 controller module. Upon system power initialization, secondary module establishes 2ms interval bidirectional high-speed synchronization communication link with primary controller via proprietary backplane redundant sync bus. Secondary processor continuously mirrors all primary controller data including analog/digital I/O measurement values, PID loop calculation states, sequential batch logic progress, alarm event records and user setpoint outputs within ECC SDRAM memory. Real-time clock values are synchronized automatically between primary and secondary units to maintain consistent event timestamps. During normal operational standby state, CC-PCNT02 does not execute independent control logic; all output commands remain transmitted exclusively by primary controller module. Continuous hardware and communication fault monitoring circuits compare primary controller operational health status at 1ms sampling intervals. Upon detection of unrecoverable primary controller fault, internal logic immediately terminates synchronization link and activates full independent control execution within maximum 20ms transfer latency, utilizing pre-mirrored process data and control logic stored within local flash memory and RAM. Secondary module assumes all backplane I/O communication, fieldbus remote I/O data exchange and HMI communication responsibilities until primary controller fault resolution and manual redundant sync restoration by maintenance personnel.

Advantage Highlights

2ms ultra-fast redundant synchronization ensures zero data state mismatch between primary and standby controller
20ms maximum seamless control switchover eliminates unplanned process shutdown during primary controller hardware failure
Passive full I/O data mirroring maintains identical process state without control loop disturbance during failover
Front-panel accessible RTC battery enables on-site clock battery replacement without rack module disassembly
Remote firmware upgrade capability reduces system maintenance downtime for control program version updates
ECC memory technology eliminates risk of control state corruption during multi-year standby redundant operation
Full fault diagnostic mirroring provides identical system health monitoring visibility to primary controller for maintenance troubleshooting

Applicable Industries

Critical hazardous chemical processing plants, offshore oil & gas production platforms, combined cycle power generation facilities, continuous pulp & paper production lines, pharmaceutical sterile batch manufacturing systemsAll modules belong to Honeywell Experion C200 Controller System (CC Series Control I/O Modules)

Format Rule: Each model independent block, all text English, core labels & parameters bolded, full structured technical archive data, zero speculative vocabulary

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