The SCP451-53 from Yokogawa acts as the central processing unit for safety and control applications in industrial plants. As a processor module, it handles program execution, communication, and output control within the system chassis. The model SCP451-53 belongs to the SCP451 series, which serves ProSafe-RS and related safety instrumented systems. Engineers select this module for its combination of computing power, diagnostic features, and SIL3 certification.
The SCP451-53 delivers strong computing performance through its dual-core ARM Cortex-A9 processor. Specifically, the module carries 2 GB of DDR3 SDRAM for program execution and 8 GB of NAND flash for data storage. Additionally, it provides four analog output channels with selectable ranges spanning current and voltage signals. Output accuracy reaches 0.1% of span with 12-bit resolution, which supports precise control loop performance.
Key Processing and Output Parameters:
Processor: Dual-core ARM Cortex-A9.
Memory: 2 GB DDR3 SDRAM and 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.
Output Resolution: 12-bit.
Isolation: 500 Vrms (output to ground).
Communication Ports:
2 × Ethernet ports.
2 × USB ports.
1 × RS-232 port.
The front panel includes several maintenance switches that support commissioning and troubleshooting. The START/STOP switch forces the CPU to stop or restart through a small access hole. Meanwhile, the Battery ON/OFF switch protects management information in storage memory during power failures. For normal operation, keep this switch in the ON position.
Furthermore, a 6-bit DIP switch provides diagnostic functions. The PORT setting supports maintenance access and should stay OFF during routine operation. The DOMN and STA positions display domain and station numbers on the STATUS LED. Besides, the FIX position controls negotiation mode, with ON forcing a fixed setting and OFF enabling automatic negotiation.
The SCP451-53 operates within standard industrial control cabinets. Its power consumption reaches 10 W maximum, which keeps heat generation manageable. The module resists vibration at 2.5 g RMS across 10-500 Hz and withstands shock at 10 g for 11 ms. Moreover, the front panel carries an IP20 protection rating.
Operating Conditions:
Operating Temperature: -10°C to +55°C.
Storage Temperature: -40°C to +85°C.
Humidity: 5% to 95% RH (non-condensing).
Dimensions: 123 mm height × 122 mm width × 100 mm depth.
Weight: 1.5 kg.
The SCP451-53 holds multiple international certifications. These include ATEX and IECEx for hazardous area use, SIL3 per IEC 61508 for safety functions, and UL, CSA, and CE marks for global market access. Therefore, the module suits safety instrumented systems in petrochemical, oil and gas, and power generation facilities.
Correct installation ensures reliable processor operation and safety compliance. First, verify that the chassis slot supports the SCP451 module and that system power is off. Next, slide the SCP451-53 into its designated slot and secure the front panel fasteners.
Wiring requires attention to port assignments. Connect Ethernet cables to the appropriate network switches for control and monitoring traffic. Moreover, route output wiring to field termination assemblies with correct polarity. Finally, set the Battery switch to ON and confirm the STATUS LED shows normal operation after power-up.
1 × Yokogawa SCP451-53 Processor Module
1 × Installation Reference Guide (documentation only)
Q1: What is the main role of the SCP451-53 in a control system?
A: The SCP451-53 executes control programs and drives analog outputs within the system chassis. It combines processing, communication, and output functions in one module.
Q2: How many output channels does this processor module provide?
A: The module offers four analog output channels. Users can configure each channel for 0-20 mA, 4-20 mA, 0-10 VDC, or 1-5 VDC operation.
Q3: What safety certification does the SCP451-53 carry?
A: The module holds SIL3 certification under IEC 61508. Additionally, it carries ATEX and IECEx approvals for hazardous area installation.
Q4: What is the purpose of the Battery ON/OFF switch?
A: This switch enables battery backup for management information in storage memory. Keep it ON during normal operation to protect data during power failures.
Q5: What are the operating temperature limits for this module?
A: The SCP451-53 operates from -10°C to +55°C. Storage limits extend from -40°C to +85°C with 5% to 95% non-condensing humidity.
| Brand Name | |
| Model No. | SCP451-53 |
| Product Type | Processor Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
