Honeywell TK-CCR014 Redundant Net Interface

This redundant net interface module provides fault-tolerant network connectivity for Honeywell Experion systems. The TK-CCR014 connects the plant control network to critical I/O subsystems with dual communication paths. It automatically switches to the backup path during network failures or maintenance activities. System engineers select this module for applications requiring maximum network reliability and uptime. Its compact form factor fits into standard Honeywell chassis positions.

Technical Specifications Summary

Parameter	Specification
Network Interface	Redundant I/O Net (dual channels)
Communication Protocol	Honeywell proprietary I/O Net protocol
Transmission Speed	10 Mbps per channel
Network Redundancy	Active/standby with automatic failover
Failover Time	< 10 ms for seamless switching
Data Exchange Capacity	2048 bytes input, 2048 bytes output
I/O Modules Supported	Up to 64 per network segment
Communication Ports	2x RJ-45 connectors per channel
Diagnostic Interface	RS-232-C for configuration and monitoring
Redundancy Logic	Integrated voting and synchronization
Status Indicators	Power, primary link, secondary link, and fault
Dimensions (H x W x D)	130 mm x 40 mm x 120 mm
Weight	0.4 kg
Power Consumption	4.5 W from +5 V DC backplane
Operating Temperature	0 °C to +55 °C
Storage Temperature	-40 °C to +85 °C
Relative Humidity	5% to 95% non-condensing

Redundant Network Architecture and Failover Logic

The module implements a fully redundant network interface with two independent communication paths. Each path operates as a complete I/O Net channel with its own physical layer. The TK-CCR014 maintains both channels active, with one serving as the primary link. It continuously monitors the health and integrity of the active connection. When the primary channel fails, the module switches to the backup channel instantly. This failover occurs in under 10 milliseconds without interrupting I/O operations. The module synchronizes data between both channels for seamless transitions. This architecture ensures continuous connectivity for critical control applications.

Data Exchange and I/O Capacity

The module facilitates high-capacity data exchange between controllers and I/O subsystems. It transfers up to 2048 bytes of input data and 2048 bytes of output data. The TK-CCR014 supports up to 64 I/O modules on a single network segment. This capacity accommodates substantial I/O configurations for large process units. The module manages both cyclic and acyclic data exchanges effectively. It handles time-critical I/O updates alongside less time-sensitive diagnostic data. This comprehensive data management ensures responsive control and monitoring.

Communication Ports and Physical Connectivity

The module provides dedicated RJ-45 connectors for each redundant network channel. Two ports serve the primary communication path, and two ports serve the backup path. The TK-CCR014 enables daisy-chain connections through its IN/OUT port arrangement. This configuration simplifies field wiring and reduces cable runs substantially. A separate RS-232-C port supports configuration and diagnostic functions. Engineers connect a laptop to this port for initial setup and troubleshooting. LED indicators display the status of each network link, power, and fault conditions.

Diagnostics and Health Monitoring

The module offers comprehensive diagnostic features for network troubleshooting and maintenance. It continuously monitors cable integrity, link status, and communication quality. The TK-CCR014 performs automatic channel testing to verify backup readiness. It logs communication errors and network events for post-event analysis. Users can retrieve diagnostic data through the RS-232-C port or the host controller. The module reports its operational status to the Experion system for central monitoring. These diagnostic capabilities facilitate proactive maintenance and rapid fault resolution.

Mechanical Construction and Installation Process

The module occupies a single slot in the Honeywell Experion chassis. It measures 130 millimeters high, 40 millimeters wide, and 120 millimeters deep. The unit weighs 0.4 kilograms for straightforward handling during installation. Power consumption draws 4.5 watts from the +5 V DC backplane supply. The module inserts directly into the I/O rack without special mounting hardware. All network connections are accessible from the front panel for convenient cabling. The robust metal housing protects internal electronics from physical damage.

Environmental Specifications and System Reliability

Industrial environments require equipment that performs reliably under varied conditions. The TK-CCR014 operates effectively from 0 °C to 55 °C ambient temperatures. Storage conditions extend from -40 °C to 85 °C for shipping and warehousing. Humidity tolerance covers 5% to 95% without condensation affecting operations. The module includes transient suppression on all network connections. Quality components ensure a long service life with minimal maintenance. These features make the module suitable for critical process applications.