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- Yokogawa
- VJA1-027-AAA0
- Distributor
- Japan
- 76 × 29.5 × 124.5 mm
- 0.12 kg
- Xiamen, China
- New & In Stock
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- 1 Year
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
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Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
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We provide 7*24 hours service to our customers. We will be there whenever you need us.
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All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Yokogawa VJA1-027-AAA0 is an isolated dual-output signal distributor used in industrial process control systems.
It belongs to Yokogawa’s JUXTA VJ series signal conditioning and distribution family, which is designed for reliable signal conversion and distribution in automation environments.
This device is typically used to split a 4–20 mA process signal into multiple isolated outputs, enabling one input signal to be safely shared across multiple control or monitoring systems.
It is widely applied in DCS (Distributed Control Systems), PLC systems, and industrial instrumentation networks.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Yokogawa |
| Model | VJA1-027-AAA0 |
| Product Type | Signal Distributor |
| Series | JUXTA VJ Series |
| Input Signal | 4–20 mA DC |
| Output Signal | Dual 4–20 mA DC outputs |
| Power Supply | 15–30 V DC |
| Function | Signal isolation and distribution |
| Output Configuration | Isolated dual output |
Physical Specifications
| Parameter | Details |
|---|---|
| Dimensions | 76 × 29.5 × 124.5 mm |
| Weight | 0.12 kg |
Function and Working Principle
The VJA1-027-AAA0 functions as an isolated signal splitter and distributor.
Core Working Principle
- Receives a single analog input signal (4–20 mA)
- Internally isolates the input to prevent electrical interference
- Splits the signal into two independent outputs
- Outputs maintain signal accuracy and isolation
- Allows multiple control systems to use the same process signal
This ensures stable signal transmission without ground loops or interference between systems.
Key Functions
- Signal isolation for industrial analog inputs
- Dual output signal distribution (1 input → 2 outputs)
- Prevents electrical noise and ground loop issues
- Maintains signal integrity in control systems
- Enables multi-system signal sharing
- Improves reliability of instrumentation networks
System Role
Within an industrial automation system:
- Field instrument generates 4–20 mA signal
- Signal enters VJA1-027-AAA0 distributor
- Signal is electrically isolated and processed
- Two identical outputs are generated
- Outputs are sent to separate control/monitoring systems
Industrial Applications
The VJA1-027-AAA0 is used in:
- Oil and gas production systems
- Petrochemical plants
- Refinery instrumentation networks
- Power generation plants
- Chemical processing industries
- DCS and PLC control systems
- Instrument signal distribution panels
Key Features
- Isolated dual-output signal distribution
- High accuracy 4–20 mA signal handling
- Compact module design
- Stable operation in industrial environments
- Designed for signal conditioning applications
- Part of Yokogawa JUXTA VJ series
Advantages
- Eliminates signal interference between systems
- Enables one sensor to feed multiple controllers
- Improves system reliability and stability
- Compact and easy to install
- Suitable for harsh industrial environments
Installation Notes
- Installed in control panels or instrumentation racks
- Requires stable 15–30 V DC power supply
- Must be properly grounded to avoid noise issues
- Wiring must follow analog signal standards
- Suitable for DIN rail mounting environments
FAQ
Q: What is VJA1-027-AAA0 used for?
It is used to distribute one 4–20 mA signal into two isolated outputs.
Q: Is it an active or passive device?
It is an active signal conditioning module.
Q: What systems use it?
DCS, PLC, and industrial instrumentation systems.
Q: Why is isolation important?
It prevents ground loops and electrical noise between connected systems.
Conclusion
The Yokogawa VJA1-027-AAA0 Signal Distributor is a reliable industrial signal conditioning module designed to safely isolate and distribute analog process signals.
It plays an important role in ensuring stable communication between field instruments and multiple control systems in industrial automation environments.