
Product Overview
The ABB Bailey NKHS03 Hydraulic Servo Terminal Cable is an industrial-grade servo connection 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 reliable transmission of control signals in high-precision hydraulic control applications.
This cable is typically used between IMHSS / SPHSS hydraulic servo modules and their corresponding termination units (such as NTHS series or NTDI interface units). It ensures stable signal transmission for actuator control in demanding industrial environments.
The NKHS03 cable is an essential component in hydraulic servo loop architectures, where precise and noise-resistant signal transmission is required for process stability.
Technical Specifications
| Parameter |
Details |
| Manufacturer |
ABB (Bailey) |
| Model |
NKHS03 |
| Product Type |
Hydraulic Servo Terminal Cable |
| System Compatibility |
ABB Bailey INFI 90 / Net 90 DCS |
| Function |
Signal connection between servo module and termination unit |
| Connected Modules |
IMHSS / SPHSS hydraulic servo modules |
| Termination Side |
NTHS / NTDI series termination units |
| Signal Type |
Analog + control feedback signals |
| Cable Construction |
Industrial shielded servo cable |
| Noise Protection |
High EMI resistance shielding |
| Cable Length |
Custom / optional (system dependent) |
| Installation Type |
Plug-in / pre-terminated industrial cable |
| 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 cable operates as a dedicated hydraulic servo signal transmission link.
Working principle:
- The servo controller module generates hydraulic control signals
- Signals are transmitted through the NKHS03 cable
- The cable carries both control and feedback signals with shielding protection
- Signals are delivered to the termination unit (NTHS / NTDI)
- The termination unit forwards signals to hydraulic actuator systems
- Feedback signals return through the same communication path for closed-loop control
This ensures accurate hydraulic positioning, stable feedback control, and low-noise signal transmission.
Role in Industrial Control Systems
Within ABB Bailey INFI 90 / Net 90 systems, the NKHS03 plays a key field-level role:
- Connects hydraulic servo modules to termination interfaces
- Ensures closed-loop hydraulic control communication
- Provides shielded signal transmission in noisy environments
- Supports precise actuator control in process systems
- Reduces signal degradation over distance
It is a critical physical link in hydraulic servo control architecture.
Industrial Applications
The ABB NKHS03 is widely used in:
- Power generation turbine control systems
- Oil and gas hydraulic control systems
- Petrochemical process control systems
- Industrial actuator positioning systems
- Heavy machinery hydraulic automation
- ABB Bailey legacy DCS hydraulic servo loops
It is especially important in environments requiring high-precision hydraulic motion control and stable feedback loops.
Installation and System Integration
Proper installation ensures optimal performance:
- Installed between hydraulic servo module and termination unit
- Requires correct connector alignment and locking
- Must maintain proper shielding grounding
- Avoid routing near high-voltage or high-noise cables
- Installed within control cabinet cable management systems
- Used with IMHSS / SPHSS servo modules
- Integrated into hydraulic control loop architecture
Compatible System Components
The NKHS03 typically works with:
- ABB Bailey hydraulic servo modules (IMHSS / SPHSS series)
- NTHS01 / NTHS03 termination units
- NTDI01 I/O termination interface
- Hydraulic actuators and servo valves
- DCS controllers and processor modules
- Signal conditioning units (system dependent)
- Control cabinet wiring systems
Together, these form a complete hydraulic servo control loop system.
Recommended Alternative Models
| Model |
Type |
Key Feature |
Application |
| NKHS03 |
Hydraulic servo cable |
Standard servo connection cable |
INFI 90 / Net 90 systems |
| NKHS13 |
Heavy-duty servo cable |
Improved durability / longer runs |
Harsh environments |
| NTDI01 |
Termination interface |
Signal termination unit |
Servo control interface layer |
| NTHS03 |
Servo termination unit |
Hydraulic signal interface |
Control cabinet termination |
| NKLS series |
Communication cable |
General system communication |
Non-servo applications |
Key Advantages
- Provides stable hydraulic servo signal transmission
- High resistance to electromagnetic interference
- Supports closed-loop control accuracy
- Designed for industrial harsh environments
- Ensures reliable actuator response
- Compatible with ABB Bailey servo architecture
- Reduces signal loss and noise distortion
Technical FAQs
Q1: What is the main function of ABB NKHS03?
It connects hydraulic servo modules to termination units for signal transmission.
Q2: Does it process signals?
No. It only transmits control and feedback signals.
Q3: What systems use NKHS03?
It is used in ABB Bailey INFI 90 and Net 90 hydraulic servo control systems.
Q4: What modules does it connect?
It connects IMHSS / SPHSS servo modules to NTHS or NTDI termination units.
Conclusion
The ABB Bailey NKHS03 Hydraulic Servo Terminal Cable is a critical component in ABB Bailey hydraulic control systems. It ensures stable, shielded, and accurate signal transmission between servo modules and termination units.
Its role is essential in maintaining precision, reliability, and responsiveness in hydraulic actuator control applications across power plants, petrochemical systems, and industrial automation environments.