Honeywell MC-TAIH12 51304337-150 FTA Assembly

Configured for high-level analog signal acquisition in Honeywell TPS and Experion architectures, the Honeywell MC-TAIH12 51304337-150 (MC-TAIH12 High-Level Analog Input FTA Assembly) provides direct field termination and signal interfacing for voltage and current input channels. The assembly serves as the field connection platform between process instruments and the associated analog input processing subsystem.

Hardware Specifications

Channel-to-Channel Isolation and Analog Signal Processing

The MC-TAIH12 supports sixteen analog input channels and provides field termination for both voltage and current measurement applications. Channel configuration may be implemented as single-ended or differential inputs referenced to logic ground, depending on system requirements.

Supported analog input ranges include:

• 1 VDC to 5 VDC

• 0 VDC to 5 VDC

• 0.4 VDC to 2 VDC

• 4 mA to 20 mA current loop inputs through integrated 250 Ohm input impedance conversion

The assembly serves as the field interface between process instruments and the associated analog input electronics while maintaining organized wiring and signal routing.

Channel Isolation and Measurement Accuracy

The MC-TAIH12 is designed to support high-resolution analog acquisition architectures utilizing 16-bit hardware A/D conversion capability. Typical controller implementation utilizes 14 bits of the available conversion resolution.

Signal quality characteristics include:

• Measurement Accuracy: +/-0.1% of full scale

• Common Mode Rejection Ratio (CMRR): 70 dB from DC to 60 Hz

• Normal Mode Rejection Ratio (NMRR): 32 dB at 60 Hz

• Channel-to-Channel Crosstalk: 60 dB from DC to 60 Hz

• Common Mode Voltage Limit: -6 V to +5 V peak

These characteristics assist in minimizing the effects of electrical noise and common-mode disturbances encountered in industrial measurement systems.

Frequently Asked Questions

Q: How many input channels does the MC-TAIH12 support?
A: The assembly provides 16 analog input channels.

Q: Does the assembly support 4 mA to 20 mA transmitter inputs?
A: Yes. The unit supports 4 mA to 20 mA current loop signals through an integrated 250 Ohm input impedance arrangement.

Q: Can the assembly be used in redundant control system configurations?
A: Yes. Full support for redundant channel architectures is specified for the MC-TAIH12.

Field Installation Guidelines

• Verify compatibility between the FTA assembly and the associated Honeywell analog input module before installation.

• Confirm field transmitter ranges match the configured input channel type.

• Route analog signal wiring separately from high-current AC and DC power cables.

• Use shielded instrumentation cable where required by site engineering practices.

• Apply grounding and shield termination methods according to plant instrumentation standards.

• Verify channel polarity before energizing connected field instruments.

• Perform input loop validation and channel calibration checks after commissioning.