Technical Specifications Breakdown
Key parameters for the TC-IAH061 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Number of Points | 6 galvanically isolated channels |
| Input Voltage Range (Voltage) | 10.50 VDC maximum |
| Input Current Range (Current) | 0 to 21.0 mA (w/249 resistor) |
| Voltage Resolution | 16 bits across each range shown below |
| ± 10.5 volt range | 343 μV typical (15 bits + sign) |
| 0 to 10.5 volt range | 171 μV typical |
| 0 to 5.25 volt range | 86 μV typical |
| Current Resolution | 0.34 μA |
| Input Impedance (Voltage) | Greater than 10 M |
| Input Impedance (Current) | 249 |
| Open Circuit Detection | Upscale reading (Voltage); Zero scale re ding (Current) |
| Typical OC Detection Time | 5 seconds (Voltage); 1 sec (Current) |
| Normal Mode Noise Rejection | Greater than 60 dB @ 60 Hz |
| Common Mode Rejection | 120 dB @ 60 Hz, 100 dB @ 50 Hz |
| Channel Bandwidth | 0 to 15 Hz (-3 db) |
| Settling Time to 5% of Full Scale | Less than 80 millise onds |
| Calibrated Accuracy @ 25 C | Better than 0.1% of range (Voltage); better than 0.15% of range including 0.05% sense resistor (Current) |
| Module Update Rate for All Channels | 25 ms |
| RFI Immunity Error | of ss than 2.0% of range at 10 V/m, 27 to 1000 MHz |
| Overvoltage Capability | 120 VAC/VDC continuous at room temperature (Voltage); 8 VAC/VDC with on-board current resistor (Current) |
| Input Offset Drift with Temperature | 2 V/ C typical (Voltage); 8.0 V/ C typical (Current) |
| Gain Drift with Temperature | 35 ppm/ C typical (Voltage); 45 ppm/ C typical (Current) |
| Power Dissipation | 4.3 W max |
| Isolation Voltage Channel to channel | 100% tested at 2546 VDC for 1 second |
| Isolation Voltage User to system | 100% tested at 2546 VDC for 1 second |
| Connection Terminal Blocks | TC-TBNH, 20-position terminal block |
Industry Applications
Process Monitoring and Control – In chemical plants or refineries, the module reads 4-20 mA signals from transmitters measuring pressure, flow, or temperature. The 0.15% accuracy (including sense resistor) ensures that control decisions are based on trustworthy data.
Quality and Compliance – For industries with strict quality standards, the high resolution (16-bit) and low drift over temperature help maintain consistent product quality. The fast update rate (25 ms) supports tight loop control.
Fault Detection – The open circuit detection feature (upscale for voltage, zero-scale for current) helps maintenance teams quickly identify broken wires or sensor failures. The typical detection time of 5 seconds (voltage) or 1 second (current) minimizes downtime.
Installation & Setup Guidance
When installing the TC-IAH061, ensure the module is properly seated in the backplane. Use the TC-TBNH 20-position terminal block for all field wiring. Before powering up, double-check that the input voltage does not exceed the maximum rating of 10.50 VDC for voltage inputs. For current inputs, the on-board 249 ohm resistor must be in place to convert the 4-20 mA signal to a measurable voltage. Observe polarity and torque terminal screws to the manufacturer's specification. After installation, perform a loop check to verify each channel reads correctly.
Maintenance & Reliability
Regular inspection of the terminal block connections is recommended to prevent loose wires, which can cause intermittent signals. Keep the module area clean and free of conductive dust. The module's high isolation voltage (2546 VDC) provides robust protection against surges, but periodic testing of isolation is advisable in harsh environments. Because the module has no moving parts, maintenance is minimal, but verifying calibration annually ensures long-term accuracy.
Analog Input for Demanding Processes
When process control depends on precise measurement, the Honeywell TC-IAH061 High Level Analog Input Module delivers the accuracy and reliability engineers expect. Designed for 6 galvanically isolated channels, this module accepts both voltage and current signals, making it a versatile building block in a Honeywell control system.
From a maintenance engineer's perspective, the TC-IAH061 simplifies troubleshooting and reduces downtime. Its isolated channels prevent ground loops and cross-channel interference, which are common sources of measurement error. With a module update rate of 25 ms for all channels, you get fast, consistent data for responsive control.
Compatibility & Integration
The TC-IAH061 is part of the Honeywell High Level Analog family, designed to integrate with Honeywell control systems. It connects via a standard backplane interface. The module supports both voltage and current inputs, giving you flexibility in sensor selection. For detailed backplane current requirements, refer to the module power consumption data in the system manual.
Selection Guide & Purchasing Advice
When selecting an analog input module, consider the number of channels, input types, and accuracy. If you need to replace an existing module or expand your system, AutoDCSTech can help you source genuine Honeywell parts. Contact AutoDCSTech to verify current lifecycle status and availability before ordering.
Troubleshooting & Common Issues
If a channel reads incorrectly, first check the wiring and terminal block. For voltage inputs, an upscale reading may indicate an open circuit. For current inputs, a zero-scale reading could mean a broken loop. Use a multimeter to verify the sensor output and the voltage across the 249 ohm resistor. If the module does not communicate with the controller, reseat the module and check backplane connections. For persistent issues, consult the system manual for diagnostic procedures.
Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | TC-IAH061 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
