Description
The Honeywell CC22103 (Part Number 1010621) is a high-density Digital Input (DI) Module designed for the Honeywell Safety Manager and FSC (Fail-Safe Control) systems. It is an essential component for safety-instrumented systems (SIS) that require high-availability monitoring of field device states.
Product Parameters (Datasheet)
- Model Number: CC22103
- Part Number: 1010621
- Module Type: Digital Input (DI)
- Input Voltage: 24 VDC (Nominal)
- Channel Density: Typically 16 or 32 channels (Standard for CC-series)
- Current Sensing: Low-current input for reduced power consumption
- Diagnostics: Integrated self-test routines for internal logic and loop integrity
- System Compatibility: Honeywell Safety Manager / FSC Racks
- Isolation: Galvanic isolation between field side and system logic
- Operating Temperature: 0°C to 60°C (32°F to 140°F)


HONEYWELL CC22103 1010621

HONEYWELL CC22103 1010621
Country of Origin
This safety-rated module is engineered and manufactured by Honeywell Process Solutions in the USA or the Netherlands, built to meet global SIL (Safety Integrity Level) standards.
Application Fields
The CC22103 is a primary interface in life-critical safety systems:
- Emergency Shutdown (ESD): Monitoring the status of emergency stop buttons and pull cords.
- Fire & Gas Systems: Receiving discrete signals from flame, smoke, and gas detectors.
- Burner Management (BMS): Tracking valve positions and flame scanner status in industrial boilers.
- Critical Interlocking: Ensuring safe permissive conditions are met before starting heavy machinery.
- Oil & Gas Refineries: Managing safety logic for high-pressure vessels and storage tanks.
Product Usage Instructions
- Safety Precautions: Before installation, ensure the system is in a “Safe” state. Use anti-static (ESD) protection when handling the module to prevent damage to sensitive internal components.
- Installation: Insert the module into the designated slot of the Safety Manager rack. Ensure the locking mechanisms are fully engaged to maintain a reliable backplane connection.
- Field Wiring: Connect field devices to the corresponding IOTA (Input Output Termination Assembly). Use shielded cables for long runs to minimize the risk of electromagnetic interference (EMI).
- Loop Testing: Verify the input loop by toggling the field device. The front-panel LEDs should clearly indicate the “ON/OFF” transition of the signal.
- Diagnostic Monitoring: Use the Safety Builder software to monitor the health of the module. Any detected internal faults will trigger a system alarm and are logged for maintenance.
Product Technical Description
Technically, the CC22103 is a “Fail-Safe” module. It utilizes advanced internal architecture to ensure that every input signal is validated. It doesn’t just read a voltage; it performs continuous diagnostics to detect “frozen” inputs or internal hardware failures. In a Honeywell Safety Manager environment, these modules often work in redundant pairs. If one module detects an internal fault, its partner takes over seamlessly, ensuring that the safety function is never compromised. The module is designed to “fail-to-safe,” meaning a failure within the card is interpreted by the controller in a way that defaults the process to the safest possible state.
Q&A (Common Questions)
Q: Can this module be used in a standard Experion PKS system? A: While similar in appearance, the CC22103 is specifically for the Safety Manager platform. For non-safety Experion applications, standard C300 I/O modules are typically used.
Q: What does a red “FAIL” LED on the module signify? A: A steady red LED indicates a critical internal hardware failure. The module should be replaced immediately. If the LED is flashing, it may indicate a configuration mismatch or a diagnostic warning.
Q: Is the CC22103 hot-swappable? A: Yes, in a redundant configuration, the module can be replaced while the system is powered and the process is running without interrupting the safety functions.
Q: Why are my digital inputs showing “Bad” status in the software? A: This is often caused by an open circuit in the field wiring or a loss of the 24 VDC field power supply. Check the fuses on the termination assembly.
Similar Model Recommendations
- Honeywell CC22101 (Analog Input companion)
- Honeywell CC22102 (Digital Output companion)
- Honeywell 10101/2/1 (Legacy FSC DI modules)
- Honeywell CC-PAIH01 (Standard High-Level Analog Input)
- Honeywell CC-PDIL01 (Standard Digital Input for Experion)
For more information on the Honeywell CC22103 and other safety-certified spare parts, please contact our technical sales department.

