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Quick Guide: YOKOGAWA CP451-50 S2 CPU Module
What it is CP451-50 S2?
CP451-50 S2 is the high-performance CPU processor for Yokogawa CENTUM VP distributed control systems.
It executes control algorithms, manages I/O communication, and supports dual-redundant operation for SIL-2/SIL-3 loops.
Key Data
• CPU: 64-bit quad-core 2.5 GHz
• Memory: 16 GB DDR4, 8 GB onboard flash
• Scan time: < 100 ms for 1 000 function blocks
• Ports: 2 × Gigabit Ethernet, 1 × RS-232C, 1 × RS-485
• Power: 24 V DC (20.4–28.8 V), 15 W max
• Temp: –20 °C … +70 °C, IP20
• Certifications: CE, UL, ATEX Zone 2, IEC 61508 SIL 2
Availability & Lead Time
I/O Capacity
Q: How many I/O modules can CP451-50 S2 control?
A: Up to 128 I/O nodes on Vnet/IP (≈ 4 000 points typical).
Power & Consumption
Q: What power supply do I need?
A: 24 V DC ±10 %, 15 W; use YOKOGAWA PW482-10 or equivalent.
Replacement Legacy CPUs
Q: Can CP451-50 S2 replace CP451-11 or CP461-10?
A: Yes, with slot adapter and firmware migration—migration guide available.
Network Expansion
Q: How to add Profinet or Modbus TCP?
A: Plug VI702-S1 (Vnet/IP) or VI703-S1 (Modbus TCP) card in CP451-50 S2 expansion slot.
Related Hardware
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Part Number
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Description
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CP451-50 S2
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CPU module (this unit)
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CP451-10 S2
|
Lower-memory CPU variant
|
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PW482-10
|
24 V DC power supply
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AAI143-H00
|
16-ch 4–20 mA analog input
|
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ADV151-P00
|
32-ch 24 V DC digital input
|
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VI702-S1
|
Vnet/IP interface card
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