Honeywell TK-OAV081 Analog Output Module

This analog output module delivers precise control signals for Honeywell Experion systems. The TK-OAV081 converts digital commands into 4-20 mA or 0-10 V outputs for field actuators. It drives valves, dampers, and variable speed drives with high accuracy and stability. Control engineers choose this module for its reliable performance in continuous process applications. Its compact design integrates seamlessly into the Experion I/O rack.

Technical Specifications Summary

Parameter	Specification
Output Channels	8 isolated analog outputs
Output Types	4-20 mA current or 0-10 V voltage (software-selectable)
Resolution	12-bit for current and voltage outputs
Accuracy	±0.1% of full scale at 25 °C
Temperature Drift	±50 ppm/°C maximum
Output Load	0-750 Ω for current, ≥2 kΩ for voltage
Update Rate	4 ms per channel (all 8 channels in 32 ms)
Step Response	< 2 ms to 95% of final value
Output Protection	Short-circuit and overcurrent protection
Open Circuit Detection	Automatic detection for current loop faults
Isolation Voltage	1500 V RMS between field and logic
Power Supply	+5 V DC backplane and 24 V DC field power
Field Power Requirement	24 V DC ±10%, 200 mA maximum
LED Indicators	Power and fault status per channel
Dimensions (H x W x D)	130 mm x 40 mm x 120 mm
Weight	0.3 kg
Power Consumption	3.5 W from +5 V DC backplane
Operating Temperature	0 °C to +55 °C
Storage Temperature	-40 °C to +85 °C
Relative Humidity	5% to 95% non-condensing

Output Architecture and Channel Configuration

The module provides eight independently configurable analog output channels. Each channel supports either 4-20 mA current loops or 0-10 V voltage outputs. Users configure the output type individually through the Experion system software. The TK-OAV081 handles both current and voltage outputs on the same module simultaneously. Current outputs drive loads from 0 to 750 ohms for valve positioners. Voltage outputs require a minimum load of 2 kilohms for stable performance. This flexibility reduces module inventory and simplifies system configuration.

Resolution and Accuracy Performance

The module delivers 12-bit resolution for smooth and precise output control. This resolution provides adequate fine control for most industrial actuators. Accuracy reaches ±0.1% of full scale at 25 degrees Celsius ambient temperature. Temperature drift stays within ±50 parts per million per degree Celsius. The TK-OAV081 maintains signal integrity over the full operating temperature range. It includes automatic calibration functions to compensate for component aging. These specifications ensure consistent, repeatable output signals for critical process control.

Fast Response and Update Capabilities

The module responds quickly to control commands for dynamic process applications. Output update rates reach 4 milliseconds per channel for rapid response. The module updates all 8 channels within a total of 32 milliseconds. Step response time reaches 95% of final value in under 2 milliseconds. This speed suits applications requiring fast valve and damper positioning. The TK-OAV081 refreshes outputs synchronously for coordinated multi-loop control. Consequently, it supports demanding applications like flow and pressure regulation effectively.

Output Protection and Fault Diagnostics

The module incorporates comprehensive protection features for reliable operation. Each output channel includes short-circuit and overcurrent protection circuitry. The TK-OAV081 automatically detects open circuits in current loop configurations. It reports fault conditions to the host controller for immediate notification. Front-panel LEDs indicate power, communication, and channel fault status clearly. Users can monitor each output individually for quick troubleshooting. The 1500 V RMS isolation protects the PLC backplane from field-side transients. These protective features enhance system reliability and reduce maintenance costs.

Physical Design and Installation Requirements

The module features a compact, lightweight design for convenient installation. It measures 130 millimeters high, 40 millimeters wide, and 120 millimeters deep. The unit weighs only 0.3 kilograms for easy handling. Power consumption draws 3.5 watts from the +5 V DC backplane supply. The module requires an external 24 V DC power source for output operation. A removable terminal block accepts 22-14 AWG wire for field connections. The module mounts directly into the Experion I/O carrier without additional hardware.

Environmental Specifications and Operational Reliability

Control systems demand stable operation under varying industrial conditions. The TK-OAV081 operates reliably from 0 °C to 55 °C ambient temperatures. Storage conditions extend from -40 °C to 85 °C for shipping protection. Humidity tolerance covers 5% to 95% without condensation affecting circuits. Conformal coating on the circuit board resists moisture and airborne contamination. The module includes transient suppression on all power and signal connections. These features ensure consistent output performance through the module’s extended service life.