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- ABB Bailey
- NKHS03-20
- Hydraulic Servo Terminal Cable
- Sweden (SE)
- 20 feet
- 3 kg
- Xiamen, China
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Product Overview
The ABB Bailey NKHS03-20 Hydraulic Servo Terminal Cable is an industrial pre-terminated hydraulic servo signal cable used in ABB Bailey INFI 90 / Net 90 Distributed Control Systems (DCS). It is designed to connect hydraulic servo modules with termination units, enabling stable, noise-resistant signal transmission for precise actuator control.
This model is the 20-foot (20 ft) standard-length version of the NKHS03 series, optimized for medium-distance cabinet or field wiring layouts in hydraulic control loops.
It is widely used in closed-loop hydraulic servo systems, where signal integrity and real-time feedback control are critical for stable industrial operation.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | ABB (Bailey) |
| Model | NKHS03-20 |
| Product Type | Hydraulic Servo Terminal Cable |
| System Compatibility | ABB Bailey INFI 90 / Net 90 DCS |
| Function | Servo signal transmission between control module and termination unit |
| Connected Modules | IMHSS / SPHSS hydraulic servo modules |
| Termination Side | NTHS / NTDI hydraulic interface units |
| Cable Length | 20 ft (6.10 m) |
| Signal Type | Analog control + feedback signals |
| Shielding | EMI-resistant industrial shielding |
| Installation Type | Pre-terminated servo cable assembly |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Humidity Range | 5%–95% non-condensing |
| Shipping Weight | 3 kg |
Function and Working Principle
The ABB NKHS03-20 operates as a closed-loop hydraulic servo communication cable.
Working principle:
- The control system generates hydraulic servo command signals
- Signals are transmitted through the NKHS03-20 cable
- Shielding reduces electromagnetic interference during transmission
- Signals reach the termination unit (NTHS / NTDI series)
- Hydraulic actuators respond to control commands
- Feedback signals return through the same communication path for correction
This ensures accurate positioning, stable hydraulic response, and reliable feedback control.
Role in Industrial Control Systems
Within ABB Bailey INFI 90 / Net 90 systems, the NKHS03-20 plays a key field connection role:
- Connects hydraulic servo modules to termination interfaces
- Enables stable closed-loop actuator control
- Maintains signal integrity in noisy industrial environments
- Supports medium-distance wiring configurations
- Ensures consistent hydraulic control response
It is a critical physical link in hydraulic servo control architecture.
Industrial Applications
The ABB NKHS03-20 is widely used in:
- Power generation turbine control systems
- Oil and gas hydraulic control systems
- Petrochemical process control systems
- Industrial hydraulic actuator systems
- Heavy machinery automation systems
- ABB Bailey legacy DCS hydraulic servo loops
It is especially important in applications requiring precise motion control and stable feedback regulation.
Installation and System Integration
Proper installation ensures optimal performance:
- Installed between hydraulic servo module and termination unit
- 20 ft length supports medium-range cabinet layouts
- Requires proper shielding grounding at both ends
- Must avoid routing near high-voltage or high-noise cables
- Installed within control cabinets or field wiring systems
- Used with IMHSS / SPHSS servo modules
- Integrated into hydraulic closed-loop architecture
Compatible System Components
The NKHS03-20 typically works with:
- ABB Bailey hydraulic servo modules (IMHSS / SPHSS series)
- NTHS01 / NTHS03 hydraulic termination units
- NTDI01 interface modules
- Hydraulic servo valves and actuators
- DCS controllers and processor modules
- Control cabinet grounding and shielding systems
- Signal conditioning units (system dependent)
Together, these form a complete hydraulic servo control loop system.
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| NKHS03-20 | Hydraulic servo cable | Standard 20 ft cable | Medium-distance installations |
| NKHS03-15 | Hydraulic servo cable | 15 ft version | Compact layouts |
| NKHS03 | Base servo cable | Custom length | Flexible configurations |
| NKHS13-20 | Heavy-duty servo cable | Enhanced durability | Harsh environments |
| NTHS03 | Termination unit | Signal interface module | Servo system termination |
Key Advantages
- Stable hydraulic servo signal transmission
- 20 ft optimized length for system layout flexibility
- High EMI resistance for industrial environments
- Supports precise closed-loop control
- Compatible with ABB Bailey hydraulic systems
- Reduces signal degradation and noise interference
- Reliable performance in harsh conditions
Technical FAQs
Q1: What is the main function of ABB NKHS03-20?
It transmits control and feedback signals between hydraulic servo modules and termination units.
Q2: Does it process signals?
No. It only provides physical signal transmission.
Q3: What systems use NKHS03-20?
It is used in ABB Bailey INFI 90 and Net 90 hydraulic servo systems.
Q4: Why use a 20 ft version?
It is designed for medium-distance wiring between cabinet modules and field connections.
Conclusion
The ABB Bailey NKHS03-20 Hydraulic Servo Terminal Cable is a key component in ABB Bailey hydraulic control systems. It provides stable, shielded, and accurate signal transmission between servo modules and termination units.
Its role is essential for maintaining precise hydraulic actuator control, system stability, and reliable closed-loop performance in industrial automation environments such as power plants, petrochemical facilities, and heavy industrial systems.