Honeywell CC-TCNT01 Timer/Counter module

Introduction
The Honeywell CC-TCNT01 is a high-performance Timer/Counter module designed for use with Honeywell’s Experion PKS (Process Knowledge System) and ControlEdge control platforms. As a key component of the Series C I/O subsystem, this module provides essential timing and counting functionality for industrial automation and process control applications. It is engineered to interface seamlessly with the C300 controller, enabling precise measurement and control of events such as production line cycles, batch processing sequences, and equipment operation times.
The CC-TCNT01 features a modular design that supports hot-swappable installation, allowing for maintenance or replacement without interrupting the overall system operation. It offers multiple independent channels that can be configured for either timer or counter functions, providing flexibility to adapt to diverse application requirements. With built-in diagnostics and robust isolation, the module ensures reliable performance even in harsh industrial environments characterized by electromagnetic interference and voltage fluctuations. It is widely used in sectors such as oil and gas, chemical processing, power generation, and manufacturing, where accurate event monitoring and control are critical for operational efficiency and safety.

Technical Specifications
General Characteristics
The CC-TCNT01 is part of Honeywell’s Series C I/O family, specifically designed for integration with the Experion PKS system and C300 controller. It is housed in a standard Series C I/O module form factor, designed for rack mounting in a control cabinet. The module supports redundant configurations to maximize system availability and uptime.
Channel Configuration and Functionality
The module is equipped with 16 independent channels. Each channel is software-configurable to operate as either a Timer or a Counter, providing versatile functionality for different control strategies.
– Timer Mode: When configured as a timer, channels can perform functions such as On-Delay (TON), Off-Delay (TOF), Pulse Generation, and One-Shot operations. The time base is selectable, allowing for precise timing control ranging from milliseconds to hours.
– Counter Mode: When configured as a counter, channels can count up, count down, or perform bidirectional counting. They support high-speed event counting, making them suitable for monitoring fast-moving processes or equipment speeds.
Input Signal Specifications
For counter operations, the CC-TCNT01 accepts discrete input signals. The standard input voltage is 24VDC (sinking or sourcing), compatible with typical industrial sensors and switches. The module features a high-speed input capability, with a maximum counting frequency of up to 100 kHz per channel (depending on the specific configuration and model variant). This allows it to accurately capture rapid events in high-speed automation processes.

Accuracy and Resolution
The module delivers high precision for both timing and counting tasks. It features a 32-bit counting resolution, ensuring that even large counts are tracked accurately without rollover issues. The timing accuracy is typically ±0.1% of the set value, ensuring reliable and repeatable control of process sequences.
Isolation and Protection
To ensure signal integrity and protect the control system, the CC-TCNT01 incorporates robust electrical isolation. It provides isolation between the field inputs and the logic side, as well as between individual channels. The isolation voltage rating is typically 2500VAC, which effectively guards against ground loops, electromagnetic interference (EMI), and radio frequency interference (RFI) common in industrial settings. This isolation also protects the controller from voltage surges or transients present in the field wiring.
Power Requirements
The module receives its operating power from the Series C I/O backplane. The typical operating voltage is 24VDC. The power consumption is low, ensuring efficient use of the system’s power budget. The module includes protection against overvoltage and reverse polarity to prevent damage from incorrect wiring or power supply anomalies.
Environmental Ratings
The CC-TCNT01 is designed to withstand the harsh conditions of industrial environments. It operates within a temperature range of 0°C to 60°C (32°F to 140°F). The storage temperature range is -40°C to 70°C (-40°F to 158°F). It can operate in relative humidity conditions ranging from 5% to 95% (non-condensing). The module is also resistant to vibration and shock, meeting standard industrial durability requirements.
Diagnostics and Maintenance
The module features comprehensive built-in diagnostics. Front-panel LED indicators provide visual status feedback for power, communication, and individual channel activity or faults. This allows maintenance personnel to quickly identify issues such as signal loss or module failures. The hot-swappable design enables the module to be removed and replaced while the system is running, minimizing process downtime and facilitating easy maintenance.