The Yokogawa SPW484-13 S1 is a 24 V DC input power supply module used in Yokogawa ProSafe-RS Safety Instrumented Systems (SIS) and CENTUM / FCU / FIO architectures.
It is designed to provide stable DC power to critical system components, including:
- Safety CPU modules (SCS)
- I/O modules (SDV / SAV / SAI series)
- Communication modules (ESB / Vnet)
This module is widely used in high-reliability safety systems where uninterrupted operation is essential.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Yokogawa |
| Model | SPW484-13 S1 |
| Product Type | DC Power Supply Module |
| System Compatibility | ProSafe-RS / CENTUM VP / FIO |
| Input Voltage | 24 V DC (20.4–28.8 V DC) |
| Output Voltage | +5 V DC / +24 V DC system bus |
| Output Current | Up to ~40 A (system dependent) |
| Efficiency | ~90% (typical) |
| Redundancy | Dual-redundant supported |
| Hot Swap | Supported |
| Operating Temperature | Industrial range (approx. -20°C to +70°C) |
Physical Characteristics
| Item | Specification |
|---|---|
| Dimensions (W × H × D) | Approx. 130 × 107.5 × 32.8 mm |
| Weight (module typical) | ≈ 1.0 kg |
| Shipping Weight | ~2 kg (packed) |
| Mounting Type | Rack-mounted |
| Structure | Plug-in modular power unit |
System Role
The SPW484-13 S1 acts as the core power conversion unit in Yokogawa systems:
24 V DC input → SPW484-13 S1 → DC bus distribution → CPU / I/O / communication modules
It ensures:
- Stable system operation
- Continuous power supply
- Safe shutdown capability (in SIS systems)
