The Yokogawa SPW482 is an AC input power supply module used in Yokogawa CENTUM VP / CENTUM CS / ProSafe-RS systems.
It provides stable DC power for system components such as:
- Field Control Units (FCU)
- Safety Control Stations (SCS)
- FIO / I/O nodes
- Optical ESB bus systems
Compared with SPW481 (100–120 V AC), the SPW482 is designed for 220–240 V AC power environments, making it suitable for international industrial installations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Yokogawa |
| Model | SPW482 |
| Product Type | AC Power Supply Module |
| System Compatibility | CENTUM VP / ProSafe-RS / FIO systems |
| Input Voltage | 220–240 V AC ±10% |
| Frequency | 50/60 Hz |
| Output Voltage | System DC rails (5 V DC & 24 V DC internally distributed) |
| Power Consumption | ~230 VA (system dependent) |
| Redundancy | Supported (dual-module configuration) |
| Installation | FCU / SCS / ESB rack systems |
| Operating Temperature | -20°C to +70°C (ISA G3 class) |
| Replacement Cycle | ~8 years recommended |
Physical Characteristics
| Item | Specification |
|---|---|
| Dimensions | Approx. 146.5 × 199.5 × 49.7 mm |
| Weight | Approx. 1 kg |
| Mounting Type | Rack-mounted module (FCU / SCS / ESB system) |
| Structure | Plug-in power supply unit |
| Cooling | Natural convection (system cabinet cooling assisted) |
System Role
The SPW482 acts as the main AC power conversion module inside Yokogawa control and safety systems.
Typical power flow:
-
220–240 V AC input
→ SPW482 power module
→ DC system bus (+5 V / +24 V rails)
→ CPU modules / I/O modules / ESB communication modules
It is a critical infrastructure module ensuring continuous operation of DCS/SIS systems.
Related Models
- SPW481 – 100–120 V AC version
- SPW484 – 24 V DC input version
- SPW482-53 – updated revision of SPW482
- Yokogawa SCS / FCU systems
- Yokogawa SNT10D ESB repeater system
