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Description
The Honeywell TC-OAV081 is a high-performance analog output module designed for precision control signal generation within industrial automation environments. As part of the Honeywell control system architecture, this module provides 8 independent channels capable of operating in both voltage and current modes. It is engineered to interface seamlessly with actuators, control valves, and variable frequency drives, making it a critical component for process control in sectors such as power generation, oil and gas refining, and chemical manufacturing. The module ensures high-resolution output and calibrated accuracy, which are essential for maintaining stable process loops and minimizing variability.
Features
- 8 independent analog output channels.
- Supports both voltage (-10.4 V to +10.4 V) and current (0 to 21 mA) output modes.
- High-resolution output: 320 uV per count for voltage and 650 nA per count for current.
- Integrated electronic protection against overvoltage (up to 24 VAC/VDC) and short circuits.
- Fast update rate of 25 ms for all channels and settling time of less than 2 ms.
- Robust noise immunity with minimal RFI deviation.
- High drive capability supporting loads up to 2000 ohm (voltage) and 750 ohm (current).
Applications
The TC-OAV081 is widely utilized in distributed control systems (DCS) for regulating critical process variables. Typical applications include the positioning of pneumatic or electric control valves, speed control for industrial motors via drives, and providing setpoints for auxiliary control equipment in heavy industrial plants.
Technical Specifications
| Model |
TC-OAV081 |
| Number of Channels |
8 |
| Voltage Output Range |
-10.4 V to +10.4 V |
| Current Output Range |
0 to 21 mA |
| Voltage Resolution |
320 uV per count |
| Current Resolution |
650 nA per count |
| Calibrated Accuracy |
Better than 0.05 percent of range at 25 deg C |
| Output Overvoltage Protection |
24 VAC or VDC continuous |
| Module Update Rate |
25 ms |
| Output Settling Time |
Less than 2 ms to 95 percent |
| Isolation Voltage |
2550 VDC (1 s, user to system) |
| Power Consumption |
6.9 W max |
| Operating Temperature |
0 to 60 deg C |
Installation Guidelines
- Ensure the control system is powered down before inserting or removing the module from the I/O rack.
- Use the specified TC-TBNH 20-position terminal blocks for secure field wiring.
- Maintain proper grounding practices to ensure the integrity of the analog signals and to protect against EMI/RFI.
- Route signal cables away from high-voltage power lines to prevent induced noise.
- Verify that the load impedance on each channel is within the specified limits (0-750 ohm for current, >2000 ohm for voltage) to prevent output saturation or errors.
- Handle the module using ESD-safe procedures to prevent damage to internal electronic components.
FAQ
What is the primary function of the TC-OAV081?
The TC-OAV081 is an analog output module used to convert digital control signals from the processor into precise analog voltage or current signals to drive field devices like valves and actuators.
Can this module be used for both voltage and current signals?
Yes, the module is designed to support both modes, allowing for flexible configuration based on the requirements of the connected field instrument.
What is the required terminal block for this module?
The module is designed to be used with the TC-TBNH 20-position terminal block.
