Honeywell 10105/2/1 FSC Fail-safe High-Density Analog Input Module

Configured for fail-safe analog signal acquisition in Honeywell FSC architectures, the Honeywell 10105/2/1 (10105/2/1 Fail-safe High-Density Analog Input Module) provides direct physical and electrical execution for sixteen analog measurement channels. The module accepts conditioned voltage signals derived from 0-20 mA field instrumentation and performs digitization through an integrated 12-bit conversion system for safety-related control applications.

Hardware Specifications

Channel Isolation and Signal Conversion Architecture

The 10105/2/1 analog input channels require field current signals to be converted before acquisition. Conversion from 0-20 mA instrumentation loops can be implemented through the FTA-T-14 field termination assembly or by utilizing the 10105/A/1 analog input conversion module mounted on the programming connector of the I/O backplane.

The module incorporates a 12-bit analog-to-digital conversion system and maintains channel separation with specified cross-talk performance exceeding 60 dB. Voltage readback functionality provides verification of externally applied analog signals within the supported measurement range.

Frequently Asked Questions

Q: Can the module directly accept 0-20 mA field signals?
A: No. The module requires current signals to be converted into a compatible voltage level before processing. Conversion can be performed through the FTA-T-14 assembly or the 10105/A/1 conversion module.

Q: How many analog channels are provided?
A: The module supports sixteen analog input channels within a single 4 TE, 3 HE module footprint.

Q: What is the maximum allowable input voltage?
A: The absolute maximum input signal is specified as +/-36 VDC.

Field Installation Guidelines

• Verify that all field current signals are properly converted before connection to the module inputs.

• Confirm conversion hardware compatibility when using FTA-T-14 or 10105/A/1 signal conditioning components.

• Avoid exceeding the specified +/-36 VDC maximum input rating.

• Route analog measurement wiring separately from high-current power cables and switching circuits.

• Use shielded instrumentation cables where required by plant grounding practices.

• Verify channel scaling and signal conversion accuracy during commissioning.

• Perform input validation and readback checks before placing the module into operational service.

• Inspect connector engagement and backplane seating whenever maintenance is performed.