Description

The Honeywell 10102/2/1 is a 4-channel fail-safe analog input module designed for safety-critical application in Honeywell Fail Safe Control (FSC) systems. Featuring a native 0-2 Vdc input range, the inputs share a common 0 V connection and are galvanically isolated from the internal 24 Vdc and 5 Vdc supply rails.

The module supports both active mode (supplying individual 26 Vdc short-circuit protected loop power for field transmitters) and passive mode (utilizing external transmitter power). Due to its high input impedance, two 10102/2/1 modules can be wired in parallel for enhanced redundancy. Every input channel requires an external analog input converter module (10102/A/x series), making this module strictly compatible with I/O backplanes in the FSC rack.

Integrated self-diagnostics continuously monitor process safety times by testing absolute accuracy, full-range conversion integrity, inter-channel crosstalk, and internal reference voltages generated via an onboard D/A converter.

Features

• 4 Galvanically Isolated Input Channels: Standard 0-2 Vdc direct input range, isolated from internal 5 Vdc and 24 Vdc electronics.
• Active/Passive Power Support: Provides active 26 Vdc power output for loop-powered transmitters, or accepts passive input signals from externally powered devices.
• Parallel Capability: High input impedance allows parallel wiring of two 10102/2/1 modules to double system signal distribution.
• Comprehensive Self-Testing: Scans inputs, internal supplies, and 26 Vdc outputs within configured process safety time windows, including input filter leakage testing.
• EMC Enhanced Variant: Module suffix 11301 features upgraded electromagnetic compatibility (EMC) protection.
• 12-Bit Resolution A/D Conversion: High-accuracy digital conversion with <= 0.75% total inaccuracy.

Technical Specifications

General & Power Requirements

Input Performance

Mechanical Key Coding

FSC Analog Input Signal Matching (10102/A/x Compatibility)

To interface standard field instrumentation, the 10102/2/1 must be paired with the appropriate 10102/A/x converter module as detailed below:

Note: Non-standard signals (e.g., Thermocouples, PT-100 RTDs) must be pre-converted into standard voltage or current loops prior to connecting to the 10102/A/x adapters.

Installation Guidelines

1. Pre-Installation Safety Inspection: Verify the physical integrity of the Eurocard housing, backplane pin connectors, and key-coding mechanism. Ensure system power down or follow plant-specific hot-swap safety protocols before inserting the module into an active rack.
2. Mechanical Keying Alignment: Confirm the backplane slot is key-coded to match the module's key pattern (A5 C17 for model 10102/2/1). Do not force the card if resistance is met, as bent keying pins must be replaced rather than re-bent.
3. Rack Insertion: Carefully align the module card edges with the top and bottom guide rails of the designated FSC I/O rack. Slide the module firmly into place until the rear backplane connectors seat completely. Tighten front panel retaining screws to secure grounding and mechanical engagement.
4. Field Wiring and Converter Module Setup: Verify signal conditioning wiring via the appropriate Field Termination Assembly (FTA) or external resistor conversion network (e.g., converting 4-20 mA or 0-10 V inputs into the required module voltage level). Ensure shielded twisted-pair cabling is grounded at one end to prevent ground loop interference.

Configuration and Commissioning

1. System Software Configuration: Open the FSC user station software and assign the module to its precise rack and slot position as defined in the project hardware layout. Confirm software revision compatibility is set to version 3.00 or higher.
2. Signal Calibration and Loop Verification: Inject calibrated reference signals (e.g., 4 mA, 12 mA, and 20 mA via a loop calibrator) at the FTA terminals. Check the software engineering units and diagnostic display to confirm analog-to-digital conversion accuracy across all 4 channels.
3. Diagnostic Verification: Monitor front panel status LEDs and the Diagnostic and Battery Module (DBM) system status to ensure no channel fault, open-loop condition, or backplane communication error is reported.

Compliance and Certifications

• DIN V 19250 / DIN V 0801: Certified for safety-critical applications up to Requirement Class AK 8.
• CE Compliance: Conforms to European EMC Directive (89/336/EEC) and Low Voltage Directive (73/23/EEC).
• Industrial Safety Standards: Complies with EN 61131-2 (Programmable Controllers) and UL 508 / UL 1998 (Safety-Related Software and Control Equipment).
• Environmental Testing: Tested to DIN IEC 68 Part 2 standards for cold, dry heat, damp heat, shock, and sinusoidal vibration.