Honeywell MC-TAIL12 Analog Input Termination Board

Termination Interface and Channel Configuration

This termination board serves as the primary field wiring interface for analog input signals. It supports up to twelve differential or single-ended analog channels in a compact form factor. Each channel accommodates standard 4–20 mA current loops or 1–5 VDC voltage inputs. The board also provides dedicated terminals for each channel’s positive and negative leads. This design simplifies wiring organization and reduces installation errors significantly.

Technical Specifications

Parameter	Specification
Model Number	MC-TAIL12
Channel Count	12 analog input terminations
Signal Types	4–20 mA or 1–5 VDC (configurable)
Termination Style	Screw-type terminal blocks
Wire Gauge Range	14–22 AWG
Common Mode Voltage	±10 VDC maximum
Channel Isolation	Non-isolated (relies on input module)
Current Burden	250 Ω typical (4–20 mA mode)
Input Impedance (Voltage)	10 MΩ minimum
Operating Temperature	0°C to +60°C
Storage Temperature	–40°C to +85°C
Dimensions (H x W x D)	130 mm x 210 mm x 25 mm
Weight	Approximately 0.45 kg
Connector Type	50-pin flat ribbon cable to I/O module
Mounting	DIN-rail or panel mount
Accessories	Label strip and marker tags included

Wiring and Field Connection Details

The MC-TAIL12 uses rugged screw terminals for secure field wire retention. Each channel provides three termination points: signal high, signal low, and shield ground. Connect the cable shield to the dedicated ground terminal for optimal noise rejection. The board also includes a common ground bus bar for simplified wiring of multiple channels. Arrange wire bundles neatly to facilitate future maintenance activities.

Signal Routing to I/O Modules

This termination board connects to Honeywell analog input modules via a 50-pin ribbon cable. The cable transmits raw analog signals directly to the processing module. A single ribbon cable handles all twelve channels simultaneously. This approach minimizes cabinet wiring complexity and reduces installation time. Ensure the cable length does not exceed the manufacturer’s recommended maximum.

Component Count and Build Quality

This board contains precision resistors and gold-plated connector pins for reliable signal transfer. The PCB uses a four-layer design to minimize crosstalk between adjacent channels. All terminal blocks feature nickel-plated brass contacts for corrosion resistance. The board includes mounting holes for secure panel installation. Each unit undergoes factory testing to verify electrical performance.

Environmental and Mechanical Tolerance

The MC-TAIL12 operates reliably across a 0°C to 60°C temperature range. It withstands 5% to 95% relative humidity without condensation. The board’s compact 130 x 210 mm footprint saves valuable cabinet space. Its lightweight design simplifies handling during installation. Proper spacing between boards ensures adequate airflow for cooling.

Installation and Maintenance Practices

Mount the board securely onto a standard DIN rail using the integrated clips. Alternatively, fasten it to a panel using the four corner mounting holes. Route field wiring through the cable entry points before terminating each channel. Label each terminal clearly using the supplied marker strips. Inspect all screw connections periodically to maintain signal integrity.

Integration with Control Systems

This board interfaces directly with Honeywell Series T and Series C analog input modules. It requires no external power supply for operation. The board acts purely as a passive termination medium. System configuration software recognizes the connected channels automatically. Use shielded twisted-pair cables for field wiring to achieve optimal measurement accuracy.