The Honeywell TC-OAV081 is an 8-channel analog output module designed for Honeywell Experion PKS/C300 systems. Adopting a single-slot form factor, it converts digital signals from the controller into high-precision current and voltage analog signals to drive field actuators such as valves and frequency converters. Featuring high isolation, high accuracy and strong anti-interference capability, it is well suited for demanding industrial process control applications.
Product Advantages
High-precision ControlAccuracy better than 0.05% FS at 25°C. Voltage resolution: 320 μV per count; current resolution: 650 nA per count, ensuring high precision for closed-loop control.
High Isolation for Enhanced SafetyWithstand voltage isolation of 2550 VDC (1-second test). The 8 channels are divided into 2 groups of 4 channels with group isolation, which effectively eliminates ground loop currents and interference to secure system operation.
Wide Range CompatibilitySupports voltage output of ±10.4 V and current output of 0–21 mA, compatible with standard 4–20 mA and 0–10 V signals to meet the requirements of most actuators.
Industrial-grade ReliabilityOperates stably within -20°C ~ +70°C with IP20 protection. Built-in overvoltage and short-circuit protection. RFI interference error less than 2% (10 V/m, 27–1000 MHz).
Fast ResponseOverall channel update rate: 25 ms. Reaches 95% of the final value within 2 ms under resistive loads, ideal for high-speed control loops.
Product Specifications
Core Parameters
- Number of Channels: 8 analog output channels (single-slot)
- Output Type: Voltage / Current (independently configurable per channel)
- Output Range: Voltage ±10.4 V; Current 0–21 mA (4–20 mA supported)
- Resolution: 320 μV/count (Voltage); 650 nA/count (Current)
- Accuracy: ≤ ±0.05% FS at 25°C; Temperature drift: 50 μV/°C (Voltage), 100 nA/°C (Current)
- Isolation: 2550 VDC (System to field), inter-group channel isolation
- Drive Capacity: Voltage: >2000 Ω; Current: 0–750 Ω
- Protection: 24 VAC/VDC overvoltage protection; electronic current limiting & short-circuit protection
- Power Consumption: Max. 6.9 W; Power supply: 24 VDC ±10%
- Dimensions / Weight: 51×178×356 mm; Approx. 0.24 kg
- Mounting: DIN rail (TS-35/7.5), equipped with 20-pin terminal block TC-TBNH
Functional Features
- Programmable scaling, filtering and limiting for non-linear actuators
- Fault diagnosis and LED status indicators for quick troubleshooting of channel and wiring faults
- Hot swap capable (under system redundant configuration) for on-line maintenance without production downtime
Application Industries
Petrochemical IndustryControl of regulating valves, variable frequency pumps and heating furnace temperature.
Power & EnergyBoiler feed water valves, turbine speed regulation and excitation control.
Water TreatmentDosing pumps, pH regulating valves and flow proportional control.
Pharmaceuticals & Fine ChemicalsTemperature and humidity control for clean rooms and precise regulation of reactors.
HVACControl of air dampers, water valves and fan speed.
FAQ
Q: Which systems is TC-OAV081 compatible with? Is it compatible with the legacy C200?A: It is designed for Honeywell Experion PKS, C300 controllers and HC900 systems. It is incompatible with C200, which requires TC-OAV080 instead.
Q: Can the output signals directly drive solenoid valves?A: The current drive capacity is 0–750 Ω and voltage drive capacity is over 2000 Ω. It cannot drive solenoid valves directly. A relay or amplifier is required.
Q: Can voltage and current outputs be mixed across the 8 channels?A: Yes. Each channel can be configured independently. Some channels can be set to 4–20 mA while others to ±10 V to adapt to various actuators.
Q: The module reports "channel wire break". How to troubleshoot?A:
- Check for loose, broken or shorted wiring at terminals.
- Measure resistance of field devices: 250–500 Ω for current signals, over 10 kΩ for voltage signals.
- Test with another channel to determine whether the fault lies with the module or wiring.
Q: Severe signal drift occurs and the error exceeds 0.1% as temperature rises. What to do?A:
- Ensure stable power supply with ripple less than 50 mV.
- Recalibrate the range to compensate for temperature drift.
- Improve wiring: Ground the shield at one end only and keep cables away from power lines.
Q: No response after hot swapping the module. How to recover?A:
- Ensure the system is configured for redundancy. Hot swap is prohibited in non-redundant mode.
- Power off, reinsert the module and clean the gold-plated contacts.
- Restart the controller and re-download the configuration.
Q: Signal fluctuation caused by RFI interference. How to resolve?A:
- Use shielded twisted-pair cables and connect the shield to system ground.
- Keep the module at least 30 cm away from power equipment and avoid parallel cabling.
- Enable software filtering (1–5 s) to stabilize fluctuating signals.
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