Westinghouse 7379A21 Modules 7379A21G02

Technical Dossier

Product Details And Specifications

Westinghouse 7379A21 Series Technical Notes

The Westinghouse 7379A21 series represents a core family of electronics modules deployed within the Westinghouse Distributed Processing Family (WDPF) and its successor, the Emerson Ovation DCS platform. These modules have accumulated decades of installed base across heavy industrial sectors including coal-fired and nuclear power generation, petroleum refining, chemical processing, and large-scale utility operations. The 7379A21 family handles analog and digital signal conditioning, process I/O interfacing, and controller-level computation tasks within redundant, high-availability control architectures. Their continued presence in operating plants — many with 20–40 year design lifespans — makes sourcing and lifecycle support a critical operational requirement for maintenance engineers worldwide.

7379A21 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified part numbers within the Westinghouse WDPF / Ovation electronics module ecosystem. Each entry reflects a distinct functional role within the control system architecture.

7379A21G01: Analog input electronics module, 4–20 mA signal conditioning, WDPF backplane compatible.
7379A21G02: Analog input electronics module, variant G02 with revised gain-stage configuration for thermocouple/RTD inputs.
7379A21G03: Analog input module, G03 revision with enhanced EMI filtering for high-noise plant environments.
7379A21G04: Analog output electronics module, 4–20 mA drive capability, WDPF bus interface.
7379A21G05: Analog output module, G05 revision with expanded output range and improved linearity specification.
7379A21G06: Analog I/O combination module, dual-channel input/output on single PCB assembly.
7379A21G07: Digital input electronics module, 24 VDC discrete signal acquisition, WDPF data highway interface.
7379A21G08: Digital output electronics module, relay-driven discrete output, 24 VDC/120 VAC compatible.
7379A22G01: Pulse input electronics module, frequency/count signal acquisition for turbine speed and flow measurement.
7379A22G02: Pulse input module, G02 revision with extended frequency range up to 10 kHz.
7381A31G01: Controller processor module, WDPF drop controller, coordinates I/O scanning and data highway communication.
7381A31G02: Controller processor module, G02 revision with expanded memory and faster scan cycle.
5X00058G01: Ovation analog input module, 16-channel, 4–20 mA, successor platform compatible with WDPF hybrid installations.
5X00106G09: Ovation digital output module, 16-channel relay output, used in WDPF-to-Ovation migration projects.
1C31234G01: Ovation I/O module, analog input, 4–20 mA, 8-channel, direct WDPF chassis slot replacement.
1C31227G01: Ovation analog output module, 8-channel, 4–20 mA, used as 7379A21G04 functional replacement.
1C31233G01: Ovation digital input module, 32-channel, 24 VDC, compatible with WDPF field wiring terminations.
5X00119G01: Ovation power supply module, 24 VDC regulated output, supports WDPF/Ovation hybrid chassis configurations.

Quality Control for the 7379A21 Range

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.