Honeywell TC-IAH061 | 6-Channel 10V Analog Input Module

Product Overview

This analog input module captures high-level voltage signals from field transmitters and sensors. Process industries rely on accurate analog measurements for precise control loop performance. The TC-IAH061 provides six isolated input channels with 0–10 VDC signal range. Its 16-bit resolution ensures fine-grain detection of small process variations. Plant engineers can configure each channel independently for voltage or current measurement. The module’s built-in filtering rejects electrical noise from variable-frequency drives and welding equipment.

Technical Specifications

Parameter	Specification
Number of Input Channels	6 isolated analog inputs
Input Signal Range	0–10 VDC (default), configurable to 0–5 VDC
Input Impedance	≥1 MΩ (voltage mode)
Resolution	16-bit (including sign)
Accuracy	±0.1% of full scale at 25°C
Accuracy Drift	±50 ppm/°C
Sampling Rate	10 Hz per channel (simultaneous)
Common-Mode Voltage	±30 VDC maximum
Common-Mode Rejection	>100 dB at 50/60 Hz
Isolation Voltage	1500 VAC (channel-to-system)
Input Filtering	2-pole low-pass with 50/60 Hz rejection
Input Protection	Overvoltage clamping to ±36 VDC
Power Supply	24 VDC ±20% (via backplane)
Power Consumption	≤3.8 W
Operating Temperature	0°C to +60°C
Storage Temperature	–40°C to +85°C
Dimensions (W x H x D)	35 mm x 145 mm x 125 mm
Weight	0.32 kg
Terminal Type	Removable screw-clamp barrier strips

Signal Conditioning and Conversion

The TC-IAH061 employs a high-precision delta-sigma ADC for each input channel. This architecture delivers excellent linearity and low quantization noise across the full range. Input amplifiers provide high impedance to avoid loading the connected field devices. The module performs continuous calibration corrections to compensate for temperature-induced drift. Each channel includes selectable digital filtering to smooth noisy process signals.

Channel Configuration and Flexibility

Users can independently configure each input for 0–10 V, 0–5 V, or 4–20 mA with external shunt resistors. The module retains channel-specific settings in non-volatile flash memory. Real-time scaling transforms raw counts directly into engineering units. Built-in open-circuit detection flags failed or disconnected sensors immediately. Channel-to-channel isolation prevents ground loops from affecting measurement accuracy.

Diagnostic and Status Monitoring

Individual LED indicators show channel health, including overrange and underrange conditions. A module status LED reports communication and power integrity. The unit performs self-diagnostics at power-up and continuously during operation. Diagnostic data includes minimum and maximum recorded values per channel. Users can access calibration history through the system maintenance interface.

Mechanical Design and Field Wiring

The 35-millimeter narrow housing fits densely packed I/O racks efficiently. Removable screw-clamp terminals accept wire gauges from 0.5 mm² to 2.5 mm². Weighing just 320 grams, this module requires no additional support brackets. The front-facing terminal layout simplifies routing of field signal cables. Labeled terminal blocks enable clear identification of each channel’s wiring connections.