WESTINGHOUSE 7379A21G02 Analog Input Q-Line Card

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Description & Specifications

The QAV card converts an analog field signal to digital data (see Figure ).

The digital data is the summation of a frequency that has been counted for a time period. The time period is a multiple of the power line frequency (50 or 60 Hz).

Figure QAV Block Diagram

Features

Each QAV card has the following features:

² IEEE surge withstand capability

² Auto zero, auto gain correction

² Electrical isolation on all channels

² On-card digital memory (buffer)

² Open thermocouple detection (This feature is not available on G04 and G05 QAV cards.)

² Common mode rejection

² Normal mode rejection

² Automatic reasonability test (shorted input)

² Auto-conversion check

² Jumper selectable 50/60 Hz operation

² On-card thermocouple temperature compensation (Available on QAV cards at level 6 QAV)

The QAV card is designed to be mounted in a standard Q-line card cage. Connection to the control system is made by a 34-pin rear-edge backplane connector which interfaces the UIOB or DIOB and a 56-pin front-edge connector, which connects to field terminals.

FAQ About 7379A21G02 Q-Line QAV Card

Q1: How does the 7379A21G02 Q-Line QAV Card enhance communication integrity within industrial control architectures?
A: The 7379A21G02 integrates RS-485 and Modbus communication protocols, enabling reliable data exchange between field devices and control systems while maintaining stable network performance in demanding industrial environments.

Q2: What operational advantages does the 7379A21G02 provide when deployed in mission-critical automation applications?
A: The 7379A21G02 delivers dependable control functionality with a 220V AC operating voltage, 5A input current rating, and 25W output power, making it suitable for continuous-process and high-availability automation systems.

Q3: Why is the 7379A21G02 Q-Line QAV Card considered a space-efficient solution for modern control cabinets?
A: With compact dimensions of 120 mm × 50 mm × 30 mm and a lightweight 0.2 kg design, the 7379A21G02 optimizes panel space utilization while simplifying installation and maintenance procedures.

Q4: Which compliance and quality standards validate the industrial suitability of the 7379A21G02?
A: The 7379A21G02 is certified to UL, CE, and ISO 9001 standards, demonstrating conformity with internationally recognized requirements for safety, quality management, and industrial reliability.

Q5: In what types of control system environments can the 7379A21G02 Q-Line QAV Card be most effectively utilized?
A: The 7379A21G02 is engineered for integration into distributed control systems (DCS), process automation platforms, and industrial monitoring networks where robust communication, stable power handling, and consistent operational performance are essential.

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