SB401-50 Product Overview & Key Features
- Essential ESB Bus communication interface for Yokogawa systems.
- Acts as a slave module to connect remote I/O nodes.
- Supports flexible AC or DC power supply options.
- Must be used with an ESB Bus Coupler Module (EC401/EC402).
- Enables expansion of I/O capacity away from the main controller.
- New and original, supplied in factory sealed packaging.
Product Configuration Guide
- Base Model: SB401 (ESB Bus Interface Slave Module)
- Function: Communication Slave Interface
- Suffix Code: -50
- 5: Standard Type (No Explosion Protection)
- 0: Basic Type
Detailed Technical Specifications
- Brand & Model: Yokogawa SB401-50
- Module Type: ESB Bus Interface (Slave)
- Condition: New, Original, Factory Packing
- Power Supply Options:
- 100-120 V AC, 50/60 Hz
- 220-240 V AC, 50/60 Hz
- 24 V DC
- Power Consumption (AC): 120 W (200-230 VA)
- Power Consumption (DC): 5.5 A @ 24V DC
- Required Companion Module: ESB Bus Coupler (EC401 or EC402)
- Coupler Installation Slot: Slot 7 (Single) or Slots 7 & 8 (Dual) in FCU
- Compatible Controllers: A2FV50, A2FV70, AFV30, AFV40 series.
- Approx. System Weight: 10 kg (with 8 I/O Modules)
- Communication Bus: Yokogawa ESB (Extended Serial Bus)
System Integration & Setup
- Install the required ESB Bus Coupler Module (EC401/402) in the FCU.
- For single configuration, install the coupler in Slot 7 only.
- Connect the SB401-50 slave module to the coupler via the ESB bus.
- Connect up to 8 I/O modules to the node unit associated with this slave.
- Apply the correct AC or DC power supply as per your plant standards.
Primary Applications
- Extending I/O points in Yokogawa Centum VP and related control systems.
- Creating distributed I/O stations in large factories.
- Systems requiring remote data acquisition away from the main control cabinet.
FAQ & Selection Advice
What is the ESB Bus?
ESB stands for Extended Serial Bus. It is Yokogawa’s communication network for connecting controllers to remote input/output units.
Can I use this module by itself?
No. The SB401-50 is a slave module. It requires a master ESB Bus Coupler Module (EC401 or EC402) installed in the controller.
What is the difference between single and dual configuration?
Single uses one coupler for basic communication. Dual uses two couplers for redundant communication, increasing system availability.
What is a common installation error?
Installing the coupler module in the wrong FCU slot. It must go in Slot 7 (and Slot 8 for dual) for proper communication.
How do I select the correct power supply type?
The suffix ‘-50’ does not define voltage. You must specify your required voltage (100-120VAC, 220-240VAC, or 24VDC) when ordering the associated power unit or node.
Purchase & Warranty Details
- Item Condition: 100% New Original Yokogawa.
- Package: Factory Sealed Packing.
- Shipping: Available via FedEx, UPS, DHL Express.
- Warranty: Full 12-Month Factory Warranty.
- Contact for Quote: info@oiltechcontrols.com | WhatsApp: +86 158 8020 0923
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