The NPSI04 power supply interface module from ABB Bailey delivers regulated power to INFI 90 and Net 90 control racks. Plant engineers depend on this module to bridge bulk power sources with individual card slots. Consequently, it maintains stable voltage rails across every connected controller and I/O board.
Key Technical Specifications
The table below summarizes the main physical and electrical parameters of the NPSI04 module.
| Parameter | Specification |
|---|---|
| Product Type | Power Supply Interface Module |
| Compatibility | ABB Bailey INFI 90 / Net 90 systems |
| Dimensions | Approximately 178 mm × 102 mm × 25 mm |
| Weight | Approximately 0.27 kg (0.6 lbs) |
| Mounting | Standard INFI 90 module rack slot |
| Interface | Backplane power bus and status lines |
| Connectors | Multi-pin edge connector and power terminals |
| Component Count | Multiple regulators, capacitors, and protection circuits |
| Energy Storage | Bulk capacitors for voltage ride-through |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5% to 95% non-condensing |
Functional Overview
This module converts incoming bulk voltage into clean, isolated rails for downstream cards. Therefore, it shields sensitive logic circuits from ripple and transient disturbances. The NPSI04 also monitors rail status and reports faults to the control processor. Meanwhile, its onboard energy storage sustains output during brief input interruptions.
Installation and Handling Notes
Always verify input voltage polarity before connecting the NPSI04 to a live cabinet. In addition, inspect bulk capacitors for swelling or leakage during routine service. Tighten all power terminals to the specified torque value. Finally, record measured rail voltages in your maintenance log.
Details
| Weight | 0.35 kg |
|---|---|
| Dimensions | 90 × 45 × 100 mm |
