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The ABB Bailey NPSM02 Power Module is an industrial power supply unit designed for ABB Bailey INFI 90 / Net 90 Distributed Control Systems (DCS). It is responsible for delivering stable and regulated electrical power to system modules such as controllers, I/O modules, and communication interfaces.
This module is widely used in legacy ABB Bailey automation systems, particularly in power generation, petrochemical, oil and gas, and large-scale process industries where continuous and stable system operation is critical.
The NPSM02 is designed to ensure reliable power distribution within rack-based control architectures, supporting long-term industrial performance under harsh operating conditions.
| Parameter | Details |
|---|---|
| Manufacturer | ABB (Bailey) |
| Model | NPSM02 |
| Product Type | Power Module |
| System Compatibility | ABB Bailey INFI 90 / Net 90 DCS |
| Function | Regulated DC power supply |
| Dimensions | 135 × 50 × 200 mm |
| Weight | 7.14 kg |
| Input Type | Industrial AC supply |
| Output Type | System regulated DC power |
| Installation Type | Rack-mounted module |
| Operating Temperature | Industrial-grade range |
| Storage Temperature | Extended industrial range |
| Protection Features | Overload, overvoltage, thermal protection |
The NPSM02 operates as a central power conversion and distribution module within ABB Bailey control systems.
It receives incoming AC power from the system cabinet and converts it into stable DC power required by electronic control modules. This power is then distributed to multiple subsystems, including processing units, input/output modules, and communication interfaces.
The module also provides internal protection and regulation functions to maintain stable voltage levels and protect sensitive electronics from electrical disturbances commonly found in industrial environments.
Within ABB Bailey INFI 90 / Net 90 architectures, the NPSM02 plays a critical infrastructure role:
It is considered a core power backbone component in ABB Bailey automation systems.
The ABB NPSM02 is widely used in:
| Model | Type | Key Feature | Application |
|---|---|---|---|
| NPSM02 | Power module | Standard system power supply | DCS rack power |
| NPSI04 | High-capacity power module | Stronger load handling | Large-scale systems |
| NPSM01 | Earlier power module version | Basic system power supply | Legacy setups |
| NPCI03 | I/O power module | Compact power distribution | Module-level supply |
| NMPP02 | Power panel module | Cabinet-level distribution | System infrastructure |
Q1: What is the main function of the NPSM02?
It provides stable and regulated power to ABB Bailey DCS modules.
Q2: Does it control processes or logic?
No. It is strictly a power supply module.
Q3: Where is it used?
It is used in ABB Bailey INFI 90 and Net 90 distributed control systems.
Q4: Why is it important?
Because stable power is essential for reliable operation of all control modules in the system.
The ABB Bailey NPSM02 Power Module is a key power supply component in ABB Bailey distributed control systems. It ensures stable energy delivery, supports continuous system operation, and protects critical automation modules from electrical instability.
It is widely used in industrial environments such as power plants, petrochemical facilities, and process control systems where reliability, uptime, and power stability are essential.