Product Overview
The TC-OAV081 (Part Number: TC-OAV081) is a high-performance analog output module in the Honeywell Experion PKS Series C I/O family. It provides eight independent channels capable of both voltage and current output, enabling precise control of field devices such as variable speed drives, control valves, and actuators.
Designed for high-speed, deterministic process control, the TC-OAV081 features an ultra-fast 25 ms update rate for all channels and advanced protection circuitry, including electronic current limiting and overvoltage protection, ensuring safe operation even in fault conditions.
Technical Specifications
| Feature | Specification |
|---|---|
| Primary Identifier | TC-OAV081 |
| Channel Density | 8 Output Channels |
| Voltage Signal Range | ±10.4 VDC |
| Current Signal Range | 0–21 mA |
| Signal Resolution (Voltage) | 320 µV per count |
| Signal Resolution (Current) | 0.650 µA per count |
| Calibration Accuracy (25°C) | Better than 0.05% of range |
| Response Speed | 25 ms update rate (all channels) |
| Output Settling Time | <2 ms (to 95% with resistive load) |
| Load Impedance (Voltage) | >2000 Ω |
| Load Impedance (Current) | 0–750 Ω |
| Fault Protection | 24 VAC/VDC overvoltage; electronic current limiting at 21 mA |
| System Isolation | 2550 VDC for 1 second (User-to-System) |
| Total Power Dissipation | 6.9 W maximum |
| Termination Interface | TC-TBNH 20-position terminal block |
Application Scenarios
Modulating control valve positions in chemical refineries
Speed reference signaling for Variable Frequency Drives (VFDs)
Interfacing with analog chart recorders or secondary displays
Providing setpoint signals to third-party standalone controllers
Frequently Asked Questions (FAQ)
Q: Can the TC-OAV081 output both voltage and current on different channels simultaneously?
A: Yes. Each channel can be individually configured for ±10.4 V voltage or 0–21 mA current, depending on the connected field device requirements.
Q: What happens if a field wire is short-circuited?
A: The module includes built-in short circuit protection, electronically limiting output current to 21 mA or less, preventing internal damage.
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