The Yokogawa SPW482-E3 is an AC input power supply module used in ProSafe-RS Safety Instrumented Systems (SIS) and Yokogawa control systems such as CENTUM / FCU / node racks.
It provides stable internal DC power rails for system modules including CPU, I/O, and communication units.
The “-E3” suffix indicates a standard Yokogawa revision/configuration used in ISA G3 industrial environment class systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Yokogawa |
| Model | SPW482-E3 |
| Product Type | AC Power Supply Module |
| System | ProSafe-RS / CENTUM / FIO / FCU |
| Input Voltage | 220–240 V AC ±10% |
| Frequency | 50/60 Hz |
| Output | +5 V DC / +24 V DC system bus |
| Power Capacity | ~200–230 VA (system dependent) |
| Redundancy | Supported (dual module configuration) |
| Operating Temperature | -20°C to +70°C (ISA G3 class) |
Physical Characteristics
| Item | Specification |
|---|---|
| Dimensions | Approx. 146 × 199 × 50 mm (typical SPW482 frame class) |
| Weight | ≈ 0.9–1.0 kg |
| Mounting Type | Rack-mounted module |
| Installation | FCU / SIS / node cabinet |
| Cooling | Cabinet ventilation (no internal fan) |
System Role
The SPW482-E3 is responsible for converting AC input power into stable DC system power:
AC 220–240 V → SPW482-E3 → DC backplane power → CPU / I/O / ESB modules
It is a core infrastructure module, meaning system operation depends on its stability.
Key Features
- Stable dual DC outputs (+5 V / +24 V)
- Supports redundant power configuration
- Hot-swap capability (system dependent design)
- High reliability for 24/7 operation
- Designed for Yokogawa safety systems (SIS)
- ISA G3 industrial environment compliance
- Modular rack-based installation
