Technical Specifications Breakdown
Key parameters for the TC-OAH061 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Output Type | Analog Output, 6-Point, Current Loop (4-20 mA) Module (Isolated) |
| Number of Points | 6 galvanically isolated channels |
| Output Current Range | 0 to 21.0 mA |
| Current Resolution | 13 bits across 21 mA (2.7 µA) |
| Open Circuit Detection | None |
| Output Overvoltage Protection | 24 VAC/VDC continuous at room temperature |
| Open Short Circuit Protection | Electronically current limited to 21 mA or less |
| Drive Capability | 20.0 mA max. into loads of 500 Ω or less. Loads of 1000 Ω or less may be achieved with alternate field terminations. |
| Calibrated Accuracy @ 25 C | Better than 0.1% of range from 4.0 mA to 21.0 mA |
| RFI Immunity | Error of less than 2.0% of range at 10 V/m, 27 to 1000 MHz |
| Module Update Rate for All Channels | 25 ms |
| Output Settling Time | Less than 2 ms to 95% of final value with resistive loads |
| Output Offset Drift with Temperature | 1 µA / C typical |
| Output Gain Drift with Temperature | 60 ppm/ C typical |
| Power Dissipation | 6.7 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 Control Loops
Its 4-20 mA output is the industry standard for transmitting setpoints in chemical, oil and gas, and power generation plants. The high accuracy of better than 0.1% of range ensures that your process variables stay within tight tolerances.
Multi-Loop Batch Processing
Because the module provides six isolated channels, you can control up to six independent loops from a single module. This reduces panel space and wiring complexity. The galvanic isolation between channels eliminates the need for external isolators in many applications, saving cost and improving reliability.
Remote I/O in Harsh Environments
The RFI immunity of less than 2.0% error at 10 V/m, 27 to 1000 MHz, makes the module suitable for installations near motors, drives, and other electromagnetic interference sources. This ensures stable output signals even in electrically noisy industrial environments.
Installation & Setup Guidance
When installing the TC-OAH061, follow the guidelines in the Honeywell documentation. Ensure that the backplane connector is clean and properly seated. Use the TC-TBNH terminal block for field wiring, and torque the screws to the recommended values. For loads exceeding 500 Ω, consult the alternate field termination instructions to achieve up to 1000 Ω. Always verify that the output current does not exceed 21 mA, as the module is current-limited to protect the output stage.
Maintenance & Reliability
Periodic inspection of the module and its connections is recommended. Check for signs of corrosion, loose wiring, or overheating. The module's overvoltage protection of 24 VAC/VDC continuous at room temperature helps guard against accidental overvoltage. However, do not rely on this as a substitute for proper surge protection. Keep the module clean and free of dust to maintain optimal thermal performance.
Why Precision in Analog Output Matters
In process control, a small drift in a 4-20 mA signal can translate into significant product quality issues or even unsafe conditions. The Honeywell TC-OAH061 analog output module is engineered to deliver the repeatability and isolation your system demands. With six galvanically isolated channels, this module ensures that each loop remains independent, reducing the risk of ground loops and cross-talk. Whether you are retrofitting an existing Honeywell system or expanding a new one, the TC-OAH061 provides the accuracy and reliability that industrial engineers trust.
Compatibility & Integration
The TC-OAH061 is designed for Honeywell control systems. It connects via the backplane and uses the TC-TBNH terminal block. Ensure that your system's backplane current capacity is adequate, as the module's power dissipation is 6.7 W max. Refer to the module power consumption data in the Honeywell documentation for exact backplane current requirements.
Selection Guide & Purchasing Advice
When selecting an analog output module, consider the number of channels, isolation requirements, and accuracy. The TC-OAH061 offers six isolated channels, 13-bit resolution, and 0.1% accuracy, making it a robust choice for many applications. At AutoDCSTech, we stock this module and can provide expert advice on compatibility and availability. Contact our team to verify the current lifecycle status and availability before ordering.
Troubleshooting & Common Issues
If you suspect a problem with the TC-OAH061, first check the field wiring and terminal connections. Ensure that the load resistance is within the specified range. If the output is not responding, verify that the module is properly seated in the backplane and that the system is powered. Use a multimeter to measure the output current at the terminals. If the output is stuck at a low value, check for a short circuit or an open loop. The module's electronic current limit protects against shorts, but the loop may still need to be reset by cycling power or reconfiguring the output.
For persistent issues, consult the Honeywell documentation or contact AutoDCSTech for technical support. Always follow safe work practices when handling electrical equipment.
Availability & Condition at AutoDCSTech
| Part Number | TC-OAH061 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
