Product Overview

The Honeywell CC-GDIL21 is a high-performance 8-channel Digital Input Module designed for integration within the Experion PKS and Fail-Safe Control (FSC) architectures. This module serves as a robust interface for 24 VDC discrete signals, converting field-side binary states into actionable data for the control system. Engineered for high-availability environments, the CC-GDIL21 excels in both standard status monitoring and high-speed pushbutton pulse detection, providing a versatile solution for industrial signaling.

With a focus on system integrity, this module features a galvanically isolated design that creates a physical barrier between field wiring and sensitive logic electronics. Its ability to operate in hazardous locations via non-incendive power configurations makes it an essential component for distributed control systems (DCS) in the oil, gas, and chemical sectors.

Key Technical Characteristics

• Dual Operational Modes: Supports standard "Status" monitoring for steady-state ON/OFF conditions and "Pushbutton" mode for detecting and counting momentary switch actuations.

• Precision Signal Thresholds: Optimized for 24 VDC nominal inputs with a clear ON state transition between 18 and 26.4 VDC and a guaranteed OFF state at 5.0 VDC or less.

• Rapid Signal Processing: Delivers high-speed response times with status updates in 8 ms or less and pushbutton detection requiring a minimum 20 ms pulse duration.

• Integrated Safety Diagnostics: Features advanced open-wire detection to identify field circuit failures immediately, automatically invalidating affected channels to prevent logic errors.

• High Electrical Isolation: Provides 2 kV AC of withstand voltage between field signals and the system backplane, offering superior protection against high-voltage transients.

• Flexible Field Powering: Includes internal excitation power to eliminate the need for external marshalling power supplies, though it remains compatible with external power sourcing if required.

• Optional Redundancy: Compatible with redundant IOTA (Input Output Termination Assembly) configurations to ensure zero-downtime operation in critical safety loops.

Technical Specifications

• Manufacturer: Honeywell

• Model Number: CC-GDIL21

• Input Channels: 8 Isolated Channels

• Signal Voltage: 24 VDC Nominal (Max 30.0 VDC)

• On-State Voltage: 18.0 to 26.4 VDC

• Off-State Voltage: 0 to 5.0 VDC

• Isolation Voltage: 2 kV AC

• Update Rate: <8 ms (Status Mode)

• Update Rate: <20 ms (Pushbutton Mode)

• Operating Weight: 0.4 kg

• Dimensions: 7 x 14 x 14.5 cm

• HS Code: 8537101190

• Country of Origin: USA

Industrial Application Areas

• Safety Instrumented Systems (SIS): Monitoring emergency stop buttons and safety switch positions in high-risk zones.

• Refining and Chemical Processing: Detecting valve limit switch positions and pump motor status.

• Hazardous Area Deployments: Utilizing non-incendive field power for instrumentation in potentially explosive atmospheres.

• Factory Automation: High-speed counting and status feedback for production line sensors and operator interfaces.