Honeywell TC-OAV081 8-Channel Analog Output Module

The Honeywell TC-OAV081 is an 8-channel analog output module designed to generate voltage and current signals for field device control in Honeywell control systems. It supports bipolar voltage output from -10.4 V to +10.4 V and current output from 0 to 21 mA. The module features a 25 ms update rate, fast output settling, electronic short-circuit protection, and user-to-system electrical isolation.

Output Channels and Signal Characteristics

The TC-OAV081 provides eight analog output channels for transmitting control signals to external field devices. Its voltage and current output capabilities support different actuator and control interface requirements.

• Voltage output: -10.4 V to +10.4 V.
• Current output: 0 to 21 mA.
• Voltage resolution: 320 uV per count.
• Current resolution: 650 nA per count.

The voltage output supports bipolar control signals, while the current output accommodates standard industrial current-loop interfaces. The available output mode and load requirements should be checked against the field wiring configuration.

Output Accuracy and Response Performance

The module has a calibrated accuracy better than 0.05% of range at 25 deg C. This specification applies to the current output range from 4 to 21 mA and the voltage range from -10.4 V to +10.4 V.

The module update rate is 25 ms for all eight channels. Output settling time is less than 2 ms to reach 95% of the final value with resistive loads. These specifications describe different performance characteristics: the update rate governs channel refresh, while settling time describes the analog output response following a change in command value.

Electrical Protection and Isolation

The TC-OAV081 incorporates output protection for field-side electrical faults:

• Continuous output overvoltage protection rated at 24 VAC/VDC at room temperature.
• Electronic current limiting to 21 mA or less under open- or short-circuit conditions.
• User-to-system isolation voltage tested at 2550 VDC for 1 second.
• RFI immunity with less than 2.0% of range error at 10 V/m over 27 to 1000 MHz.

Its load-driving capability is greater than 2000 ohms for voltage output and 0-750 ohms for current output. These limits should be considered when selecting field devices and checking output circuit loading.

Technical Specifications

Terminal Block and Field Connections

The TC-OAV081 uses the TC-TBNH 20-position terminal block for field wiring connections. The terminal block provides the interface between the module's output circuits and external field wiring.

When replacing an existing module, verify the terminal block type and field wiring arrangement before installation. The connected device's input signal requirements and load impedance must also match the selected output mode.

Frequently Asked Questions

Q: What output signals does the Honeywell TC-OAV081 support?

A: The module supports voltage outputs from -10.4 V to +10.4 V and current outputs from 0 to 21 mA across eight channels. The appropriate output mode should be matched to the connected field device.

Q: Which terminal block is required for the TC-OAV081?

A: The specified connection terminal block is the Honeywell TC-TBNH, a 20-position terminal block. Check the existing wiring arrangement before selecting a replacement connection assembly.

Q: What is the maximum output load supported by the TC-OAV081?

A: The specified drive capability is greater than 2000 ohms for voltage output and 0-750 ohms for current output. The actual field load should remain within the applicable output limits.