Product Name: QAV Analog Input Card
Brand Name: WESTINGHOUSE
Model Number: 7379A21G01
Place of Origin: USA
Warranty: 12 Months
Whatsapp：+86 18020776782
Email：[email protected]
Description
The WESTINGHOUSE 7379A21G01 is a member of the Q-Line QAV series, designed specifically for use in Westinghouse WDPF and Emerson Ovation distributed control systems. It features six individually isolated channels that utilize voltage-to-frequency conversion to process analog signals. The card is engineered for robust industrial performance, integrating auto-zero and auto-gain correction to eliminate the need for mechanical potentiometers, ensuring consistent accuracy in turbine generator control and critical process automation.
Main Function
The WESTINGHOUSE 7379A21G01 functions as a high-precision analog-to-digital converter for industrial control systems. It accepts analog field signals (millivolt range), performs signal conditioning, electrical isolation, and auto-calibration, and outputs processed digital data to the Distributed Input/Output Bus (DIOB) for system-wide monitoring and control.
Commercial Terms
Minimum Order Quantity |
1 Piece |
Price |
Contact for Winnie |
Packaging Details |
Original new Factory Sealed |
Delivery Time |
3–7 Days |
Payment Terms |
T/T |
Shipping Method |
DHL / FedEx / UPS / TNT |
Supply Ability |
In stock |
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Manufacturer |
WESTINGHOUSE |
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Module Type |
QAV Analog Input Card |
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Part Number |
7379A21G01 |
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Primary Voltage |
12.4 VDC (Min) to 13.1 VDC (Max) |
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Power Consumption |
13.0 Watts (Nominal) to 15.7 Watts (Max) |
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Power Supply Current |
1.0 ADC (Nominal) to 1.2 ADC (Max) |
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Input Range (G01/G07) |
-5 to +20 mVDC (-20 to +20 mVDC at reduced accuracy) |
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Input Impedance |
10^7 Ω/Volt (Normal); 10^3 Ω (Overload)) |
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Resolution |
13-bit (including polarity bit) |
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Sampling Rate (60Hz) |
4 samples/second |
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Sampling Rate (50Hz) |
3.4 samples/second |
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Common Mode Rejection |
120 dB (at DC and line frequency with QTB) |
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Operating Temp |
Reference conditions 25°C ± 1°C |
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Sales: |
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JIM |
Surge Protection: Meets IEEE/SWC test specifications for surge withstand capability.
Automatic Reasonability Testing: Periodic checks on shorted inputs to detect card or channel malfunctions.
Normal Mode Rejection: High rejection of noise at 50/60 Hz, further enhanced when used with QTB line frequency tracking.
Versatile Configuration: Support for 50/60 Hz operation via jumper selection (Level 6 and earlier) or DIP switches (Level 8 and later).
Open Thermocouple Detection: Integrated circuitry for detecting open thermocouple loops (not available on G04/G05 variants).
Application Scenarios: Primarily utilized in power generation plants, oil and gas refineries, chemical processing, and paper mills for turbine control and critical industrial loop monitoring.
Monitoring & Control: The WESTINGHOUSE 7379A21G01 communicates via the DIOB, providing the system controller with raw count data, sign bits, over-range indicators, and health status flags (IMOK).
Compatibility & Interoperability: Fully compatible with WDPF/Ovation DIOB controllers; interoperates with QTB cards for frequency-tracking in power line variations.
Performance & Efficiency: Utilizes a stable internal frequency clock and microcomputer-driven conversion to maintain reference accuracy of ±0.10% of upper range value.
Operating Environment: Designed for standard Q-line card cage mounting; requires stable DC power supply and adherence to specified humidity and temperature conditions for rated accuracy.
Installation & Integration: Interface is achieved via a 34-pin rear-edge backplane connector for DIOB and a 56-pin front-edge connector for field signal termination, including address-protection jumpers.
The WESTINGHOUSE 7379A21G01 must be configured via address jumpers or DIP switches to match the system DIOB controller requirements to ensure proper channel addressing. For WESTINGHOUSE 7379A21G01 units with prefixes of 5 or greater, multiple channel offset errors will not trigger the "IMOK" hardware trouble bit, requiring careful diagnostic monitoring by the system controller.
Q: How does the WESTINGHOUSE 7379A21G01 perform diagnostic self-checks?
A: The WESTINGHOUSE 7379A21G01 microcomputer periodically performs auto-calibration cycles, measuring two known potentials (0 VDC and a stable gain reference) to calculate correction factors and verify reasonability.
Q: Can the WESTINGHOUSE 7379A21G01 be used in systems with large power line frequency variations?
A: Yes, but the WESTINGHOUSE 7379A21G01 requires a QTB card in such installations to maintain high normal mode rejection and accurate signal conversion.
Q: What does a logical zero at bit 15 (IMOK bit) signify for the WESTINGHOUSE 7379A21G01?
A: A logical zero at bit 15 indicates hardware trouble, incomplete warm-up, or that the auto-zero calibration offset factors for the WESTINGHOUSE 7379A21G01 are outside reasonable limits.
Q: What should be done if the LED on the WESTINGHOUSE 7379A21G01 flashes continuously?
A: First, ensure DIOB power supplies are within tolerance and verify that the DIP switch (on Level 8+ cards) is set to a valid configuration; if the WESTINGHOUSE 7379A21G01 LED remains abnormal, it must be returned for professional repair.
Years of Global Experience: With over 10 years of experience in the industrial automation industry, we serve customers worldwide and have built long-term business relationships with clients across many countries and regions, including the United Kingdom, Russia, the United Arab Emirates, India, Venezuela, and more.
Professional Support Team: Our experienced team provides helpful pre-sales consultation and reliable after-sales support, helping customers select suitable products and solve purchasing concerns.
Wide Range of Brands: We supply products from many leading automation brands, covering PLCs, DCS, I/O modules, drives, motors, power supplies, communication modules, and more.
Large In-Stock Inventory: A wide selection of automation components is available from stock, including discontinued, obsolete, and hard-to-find parts, helping customers reduce sourcing time.
Honesty & Trust: We believe long-term cooperation begins with sincerity. We treat every customer with honesty, respect, responsibility, and genuine care.
Your Trusted Automation Partner: Whether you need a single replacement part, discontinued components, or products for a complete automation project, we are ready to support your needs and build a long-term partnership.
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