Excellent PLC
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Product Description
The Yokogawa SB401-51 is an ESB Bus Interface Slave Module designed for integration within the CENTUM VP control system. It provides a high-speed, reliable communication link between the Field Control Unit (FCU) and I/O modules in the ESB bus architecture. The module is typically used in conjunction with the ANB10S or ANB10D Node Units to ensure stable data exchange and system flexibility.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | SB401-51 |
| Function | ESB Bus Interface Slave Module |
| Compatible Node Units | ANB10S (Single Bus), ANB10D (Dual-Redundant Bus) |
| Power Source | Supplied by Node Unit |
| Mounting Type | 19-inch rack mounting |
| Max. Modules per Node Unit | 2 (for redundancy) |
| Operating Voltage Options | 100-120V AC / 220-240V AC / 24V DC |
| Power Consumption | Max. 120 W |
| Dimensions (W x H x D) | 130 x 142.5 x 32.8 mm |
| Weight | 0.45 kg |
| Environment Option | ISA G3, -20°C to 70°C (optional) |
| Certifications | ATEX / IECEx (optional with suffix codes) |
Applications
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Distributed control systems (DCS) in process industries
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Integration of analog and digital I/O via ESB Bus
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Redundant communication paths in critical control systems
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Power and communication management for remote I/O modules
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Centralized control architecture using Yokogawa CENTUM VP systems
Advantages
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Redundancy Support: Dual-module installation for communication reliability
-
Compact and Modular: Easily mounts on 19-inch racks, flexible configurations
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Power Efficiency: Shares power via node units; optimized for 120 W max consumption
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Environmental Robustness: Optional operation from -20°C to 70°C with G3 compliance
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System Compatibility: Seamless integration with Yokogawa’s ANB10S/D units and FCU
Frequently Asked Questions (FAQ)
Q1: What is the function of the SB401-51 module?
A1: It serves as the communication bridge between the Field Control Unit and I/O modules via the ESB bus.
Q2: Can SB401-51 be used in redundant configurations?
A2: Yes, two SB401-51 modules can be installed for dual-redundant communication.
Q3: What node units are compatible with SB401-51?
A3: It is compatible with ANB10S (single bus) and ANB10D (dual bus) node units.
Q4: Does the SB401-51 provide power to I/O modules?
A4: No, power is supplied via the power supply modules in the node unit.
Q5: What is the installation format?
A5: It is designed for 19-inch rack mounting using M5 screws.
Q6: Is it suitable for harsh environments?
A6: Yes, with optional ISA G3 and -20°C to 70°C rating.
Q7: Can it operate with different voltages?
A7: Yes, through the node unit it supports 100–120V AC, 220–240V AC, or 24V DC.
Q8: What is the weight of the SB401-51?
A8: The module weighs approximately 0.45 kg.
Q9: How many I/O modules can a node unit support?
A9: Up to 8 I/O modules per node unit.
Q10: Is explosion protection available?
A10: Yes, explosion-proof versions can be ordered with the appropriate suffix codes.
Related Models (Same Series or Functional Equivalents)
| Model | Description | Dimensions (mm) | Weight |
|---|---|---|---|
| SB401-51 | ESB Bus Interface Slave Module | 130 x 142.5 x 32.8 | 0.45 kg |
| EC401 | ESB Bus Coupler Module | 130 x 142.5 x 32.8 | 0.48 kg |
| EC402 | ESB Bus Coupler Module (Redundant) | 130 x 142.5 x 32.8 | 0.48 kg |
| PW481 | Power Supply Module (100-120V AC) | 130 x 142.5 x 32.8 | 1.00 kg |
| PW482 | Power Supply Module (220-240V AC) | 130 x 142.5 x 32.8 | 1.00 kg |
| PW484 | Power Supply Module (24V DC) | 130 x 142.5 x 32.8 | 1.00 kg |
Popular Yokogawa Models
| Model | Description | Dimensions (mm) | Weight |
|---|---|---|---|
| CP451 | Field Control Processor | 130 x 142.5 x 32.8 | 0.60 kg |
| ALR121 | Communication Module (RS-422/485) | 130 x 142.5 x 32.8 | 0.40 kg |
| ADV151 | Analog Input Module | 130 x 142.5 x 32.8 | 0.55 kg |
| ADV561 | Analog Output Module | 130 x 142.5 x 32.8 | 0.55 kg |
| AAI143-H50 | Analog Input Module (High Voltage) | 130 x 142.5 x 32.8 | 0.55 kg |
| AMN11 | Noise Filter Module | 130 x 142.5 x 32.8 | 0.35 kg |
