Honeywell TC-OAH061 Analog Output Module 6-Point

Honeywell TC-OAH061 6-Point Analog Output Module

Product Introduction

The TC-OAH061 from Honeywell provides six galvanically isolated analog output channels. Each channel handles standard 4-20 mA current loop signals. This module works seamlessly with Honeywell’s TDC 3000 and Experion systems. Its primary job is to convert digital control signals into precise analog currents for field devices like valves, positioners, and actuators.

This module supports an output current range from 0 to 21.0 mA. The resolution reaches 13 bits across the full 21 mA span. That translates to approximately 2.7 µA per bit. Calibrated accuracy at 25°C is better than 0.1% of range from 4.0 mA to 21.0 mA. You can rely on this module for demanding process control applications.

Electrical Specifications

Each channel on the TC-OAH061 drives up to 20.0 mA maximum into loads of 500Ω or less. With alternative field terminations, loads up to 1000Ω are achievable. Output settling time is less than 2 ms to reach 95% of the final value with resistive loads.

The module includes electronic short-circuit protection. It limits output current to 21 mA or less. Output overvoltage protection handles 24 VAC/VDC continuously at room temperature. However, open circuit detection is not available on this model.

Channel-to-channel isolation is robust. Honeywell tests each channel pair at 2546 VDC for 1 second. User-to-system isolation undergoes the same 2546 VDC test. This high isolation voltage protects your control system from field wiring faults.

Performance and Accuracy

At 25°C, the TC-OAH061 delivers better than 0.1% accuracy across the 4.0 to 21.0 mA range. RFI immunity is excellent. Error remains below 2.0% of range when exposed to 10 V/m fields from 27 to 1000 MHz.

Temperature affects output offset by 1 µA/°C typical. Gain drifts by 60 ppm/°C typical. Therefore, the module maintains good stability even in warm control cabinets. Maximum power dissipation is 6.7 W.

Update Rate and Response

The module updates all six channels simultaneously every 25 milliseconds. This rapid update rate suits fast-loop control applications. Output settling time stays under 2 ms to 95% of final value with resistive loads. As a result, the TC-OAH061 responds quickly to setpoint changes.

Connection and Installation

You need a TC-TBNH 20-position terminal block for field wiring. This terminal block connects directly to the module. Wiring is straightforward. Each analog output requires two wires: one signal positive and one return.

For loads up to 500Ω, standard wiring works perfectly. If you need to drive 1000Ω loads, consult the manual for alternate field termination configurations. Always use shielded twisted-pair cables for analog outputs. This practice minimizes electrical noise interference.

Mechanical and Environmental Data

The TC-OAH061 mounts in a Honeywell I/O rack. Its compact design saves panel space. Operating temperature ranges from 0°C to 60°C. Storage temperature extends from -40°C to 85°C. Relative humidity tolerance is 5% to 95% non-condensing.

Installation Guidelines

First, ensure the system is powered off before inserting or removing the module. Next, insert the TC-OAH061 into an available I/O slot. Press firmly until the module locks into place. Then attach the TC-TBNH terminal block to the front.

After mounting, wire each channel’s two terminals to the field device. For a 4-20 mA loop, connect the positive terminal to the actuator’s positive input. Connect the actuator’s negative return to the module’s negative terminal. Keep cable runs under 300 meters for reliable signal transmission.

Finally, apply power and configure each channel’s output range in the Honeywell control software. Set the range to 4-20 mA for standard operation. Use 0-20 mA only if your field device supports it.

Packaging List

• TC-OAH061 analog output module (1 unit)

• Anti-static protective bag

• Quick reference card

Note: TC-TBNH terminal block sold separately. No certificates or warranty documents are included.

Shipping

All orders ship via FedEx, UPS, or DHL with tracking and insurance.

Frequently Asked Questions (FAQ)

1. Can the TC-OAH061 drive a 750Ω load?
The TC-OAH061 drives 20.0 mA into 500Ω max under standard wiring. With alternate field terminations, loads up to 1000Ω may work. Test your specific configuration before commissioning.

2. Does this module support HART communication?
No. The TC-OAH061 outputs pure 4-20 mA only. It does not superimpose or receive HART frequencies. For HART, use a dedicated HART analog output module.

3. What happens if a field short circuit occurs?
Electronic current limiting activates immediately. It restricts output current to 21 mA or less. This protects both the module and the field wiring.

4. Is the TC-OAH061 compatible with Experion PKS?
Yes. The TC-OAH061 works with both TDC 3000 and Experion PKS systems. Check your system’s I/O compatibility list for firmware requirements.

5. How often does the module update its outputs?
All six channels update every 25 milliseconds. This update rate is fixed and not user-adjustable. For faster response, consider a high-speed analog output module.