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Honeywell MC-TAIH12 51304337-150
Product Overview:
The Honeywell MC-TAIH12 51304337-150 is a high-level analog input module with STI (Signal Termination Interface) redundancy for industrial automation. It supports 16 differential input channels, ensuring accurate and reliable signal processing. The module comes in coated (MC-TAIH12) and uncoated (MU-TAIH12) versions, allowing flexible use in standard or harsh industrial environments.
Detailed content
Technical Specifications:
- Manufacturer: Honeywell
- Model: MC-TAIH12
- Dimensions: 10.8 cm × 12 cm × 3.5 cm
- Weight: 0.35 kg
- Input Channels: 16 differential inputs
- Input Ranges: 0–5 V, 1–5 V, 0.4–2 V, 4–20 mA (via 250 Ω resistor)
- Maximum Normal Mode Input: ±30 V (no damage)
- A/D Converter: 16-bit, 14-bit used
- Accuracy: ±0.075% FS @ 23.5 °C, ±0.15% FS (0–50 °C)
- Common Mode Rejection: 70 dB (DC–60 Hz)
- Crosstalk: 60 dB (DC–60 Hz)
- Normal Mode Rejection: 32 dB at 60 Hz
- Input Impedance: >10 MΩ (powered)
- Common Mode Range: –6 V to +5 V peak
- Input Scan Rate: 4 samples per second per channel
- Surge Withstand: ANSI/IEEE C37.90.1-1978
- Power Limiting: 145 Ω resistor current limit (Class 1, Div 2)
- Failover Accuracy Impact: ±2% of full scale (at 0 V common mode)
- Redundancy: Dual redundant STI with seamless failover (no missed or delayed cycles)
- Coating: Conformal coating standard (MC version)
- Operating Temperature: –40 °C to +85 °C
Functional Characteristics:
The module handles voltage and current inputs (2-wire or self-powered transmitters). Its redundant failover design ensures no missed data cycles. High-integrity optoisolators and passive protective networks guard internal logic components against field-side electrical anomalies, blocking transient voltages and suppressing common-mode noise.
Installation Requirements:
Terminate the shield drain wire of each analog input pair to the specified ground bar on the FTA board. Ground the cable shield at the cabinet side only to avoid ground loop current interference. Secure all field loop wire connections to the terminal block screw contacts using a calibrated torque of 0.5 to 0.6 Nm. Visually inspect the protective conformal coating for scratches or chips prior to field mounting.
Usage Precautions:
The passive FTA architecture allows secondary redundant active I/O modules connected to it to be swapped online without interrupting the 16 field signal loops. Intact coating is vital to ensure long-term resistance to moisture, salt, and corrosive atmospheric gases in harsh environments.
