Product details
SCP451-53 Yokogawa Processor Module
The SCP451-53 is a high-performance processor module from Yokogawa. It belongs to the SCP451 series and is designed for industrial automation systems. The module uses a dual-core ARM Cortex-A9 processor. It delivers fast and reliable control performance. The unit supports multiple output ranges and offers SIL 3 safety certification. It is ideal for demanding process control applications.
Technical Data
- Brand: Yokogawa
- Model: SCP451-53
- Series: SCP451
- Module Type: Processor Module
- Processor: Dual-core ARM Cortex-A9
- Memory: 2 GB DDR3 SDRAM, 8 GB NAND flash
- Output Channels: 4
- Output Range: 0-20 mA, 4-20 mA, 0-10 VDC, 1-5 VDC
- Output Accuracy: 0.1% of span
- Resolution: 12-bit
- Load Resistance: 0-20 mA: 0-1000 Ω; 4-20 mA: 0-1000 Ω; 0-10 VDC: 0-1 MΩ; 1-5 VDC: 0-1 MΩ
- Isolation: 500 Vrms (output to ground)
- Operating Temperature: -10°C to +55°C
- Storage Temperature: -40°C to +85°C
- Humidity: 5% to 95% RH (non-condensing)
- Vibration Resistance: 2.5 g RMS, 10-500 Hz (random)
- Shock Resistance: 10 g, 11 ms (half sine wave)
- Protection Rating: IP20 (front panel)
- Power Consumption: 10 W (max)
- Dimensions: 123 mm (H) x 122 mm (W) x 100 mm (D)
- Weight: 1.5 kg
- I/O Ports: 2 x Ethernet, 2 x USB, 1 x RS-232
Installation Guide
- Mount the module in a clean, dry location. Keep the front panel accessible.
- Use a non-conductive slender bar (1-2 mm diameter) to press the START/STOP switch inside the hole.
- Set the Battery ON/OFF switch to ON for normal operation. This enables backup during power failure.
- Keep the PORT, DOMN, and STA switches in the OFF position for usual operations.
- For SCP461/SCP451, set the FIX switch to OFF for auto negotiation. Set to ON to force negotiation.
- Ensure the environment stays within the operating temperature range of -10°C to +55°C.
Debugging and Maintenance Convenience
- The START/STOP switch forces CPU stop or restart. Use it for maintenance only.
- The STATUS LED shows domain or station number when DOMN or STA switches are ON. This helps quick identification.
- The maintenance port (PORT) is available for diagnostics. Keep it OFF during normal use.
- The battery backup protects management data during power loss. Check the switch position regularly.
- All settings are accessible from the front panel. No special tools are required except the slender bar.
Compatibility Notes
- The module works with Yokogawa SCP451 series systems.
- The FIX switch is only for SCP461 and SCP451 models.
- Output ranges are compatible with standard industrial receivers: 0-20 mA, 4-20 mA, 0-10 VDC, and 1-5 VDC.
- The Ethernet and USB ports support common industrial communication protocols.
- The RS-232 port allows serial connection to maintenance devices.
Certifications
- ATEX
- IECEx
- SIL 3 (IEC 61508)
- UL
- CSA
- CE
Packing List
- 1 x SCP451-53 Processor Module
- 1 x Quick Start Guide
- 1 x Safety Instructions
- 1 x Certificate of Conformity
FAQ
- Q: How do I restart the CPU without removing power?
A: Press the START/STOP switch inside the front hole. Use a non-conductive bar of 1-2 mm diameter. The CPU will restart.
- Q: What happens if the battery switch is OFF during a power failure?
A: The backup for management information stops. The module may lose stored data. Always keep the switch ON for normal operation.
- Q: Can I use the module in a vibrating environment?
A: Yes, the module withstands 2.5 g RMS vibration at 10-500 Hz. It also handles 10 g shock for 11 ms. Check the mounting regularly.
- Q: How do I know the domain or station number without a tool?
A: Turn the DOMN or STA switch ON. The STATUS LED will show the number. Turn the switch OFF after checking.
- Q: Is the module suitable for SIL 3 safety loops?
A: Yes, the SCP451-53 holds SIL 3 certification under IEC 61508. Use it in safety-related systems with proper configuration.
- Q: What is the difference between FIX ON and OFF?
A: FIX ON forces negotiation. FIX OFF uses auto negotiation. The default is OFF. This setting applies only to SCP461 and SCP451.
















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