TVOC-2-240 Dual-Channel Analog Output Converter

Description

TVOC-2-240

The ABB TVOC-2-240 is a high-performance dual-channel analog output converter designed to bridge the gap between control systems and field actuators. Its primary function is to convert digital control signals or low-level analog inputs into standardized 4-20mA or 0-10V analog outputs, compatible with a wide range of industrial actuators and control devices. Unlike basic converters, the TVOC-2-240 incorporates galvanic isolation between input, output, and power supply, eliminating ground loops and electrical noise that can distort signals in complex industrial environments.

Positioned between the control system and field devices, the ABB TVOC-2-240 plays a vital role in the automation stack. It features a compact, space-saving design that fits easily into standard control cabinets, with flexible mounting options for seamless integration. The converter supports HART communication protocol, enabling remote configuration, monitoring, and diagnostics—simplifying setup and reducing the need for on-site adjustments. Its robust construction ensures reliable operation in environments with high electromagnetic interference, temperature fluctuations, and vibration, making it suitable for both indoor cabinet installations and harsh field locations.

Main features and advantages:

Selecting the ABB TVOC-2-240 delivers significant operational advantages to industrial control systems. Its dual-channel design allows for efficient management of two independent control loops in a single unit, reducing cabinet space requirements and lowering installation costs compared to single-channel alternatives. The unit’s high accuracy of ±0.1% of full scale ensures precise control of field devices, enabling tighter process regulation and improving product quality in manufacturing applications.

Engineered for reliability, the ABB TVOC-2-240 maintains consistent performance in harsh industrial environments, withstanding electrical noise and temperature extremes that would degrade the performance of less robust converters. The built-in HART communication capability enables remote monitoring and configuration, allowing engineers to adjust output settings, perform diagnostics, and troubleshoot issues without physical access to the device—saving maintenance time and reducing operational downtime. Its galvanic isolation eliminates ground loop issues, a common source of signal interference in complex industrial wiring systems.

Application areas:

The ABB TVOC-2-240 excels in industries where precise analog control is critical to operational success. In oil and gas production, it regulates valve positions and flow control devices in pipeline systems, ensuring accurate flow rate management and preventing overpressure conditions. Its robust isolation features make it ideal for these applications, where electrical noise from pumps and compressors can otherwise disrupt signal integrity.

In water and wastewater treatment plants, the TVOC-2-240 controls chemical dosing pumps and valve actuators, maintaining precise chemical levels and ensuring regulatory compliance. Its dual-channel design allows for simultaneous control of multiple treatment processes, optimizing system efficiency. In manufacturing facilities, the converter adjusts motor speeds and conveyor systems, supporting consistent production quality through accurate process control. In all these applications, the ABB TVOC-2-240 delivers reliable signal conversion that forms the backbone of effective industrial automation.

Related products:

ABB TVOC-1-240 – Single-channel version of TVOC-2-240 for applications requiring only one analog output.

ABB TVIA-2-240 – Dual-channel analog input converter, complementary to TVOC-2-240 for signal acquisition.

ABB TB855 – Terminal block accessory for secure wiring connections with TVOC-2-240.

ABB AC500 PLC – Controller fully compatible with TVOC-2-240 for integrated control solutions.

ABB HART Handheld Communicator – Enables on-site configuration and diagnostics of TVOC-2-240.

ABB PS860 – Compact power supply optimized for powering TVOC-2-240 and other S800 I/O components.

ABB CI853 – Modbus RTU interface module for integrating TVOC-2-240 into Modbus networks.

ABB TVOC-2-241 – Enhanced version with extended temperature range (-40°C to +85°C) for extreme environments.

Installation and maintenance:

Before installing the ABB TVOC-2-240, verify compatibility with the control system’s output signals and ensure the power supply voltage falls within the 18-30V DC range. Check that the mounting rail is properly secured and level to prevent vibration-related issues. Confirm that the required output type (4-20mA or 0-10V) is configured during setup, matching the specifications of the connected field devices. For hazardous area installations, ensure compliance with ATEX or local safety standards, including proper enclosure ratings.

For ongoing maintenance, use HART communication tools to periodically check channel status and output accuracy, comparing readings with a calibrated meter. Inspect wiring connections quarterly, ensuring terminals are tight and free from corrosion, especially in humid or corrosive environments. Monitor the device’s temperature during operation to ensure it remains within the specified range, as excessive heat can affect performance. Keep firmware updated using ABB’s configuration software to access the latest diagnostic features and performance improvements.

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