Description
Key Features
1. Communication & Performance
- Role: Master module for ESB Bus (controls data exchange with slave modules)
- Protocol: Yokogawa’s proprietary ESB protocol
- Transmission Speed: 128 Mbps (deterministic real-time communication)
- Redundancy: Supports dual-redundant ESB bus configurations
- Max Nodes: Up to 9 I/O units (e.g., ANB10D, ANT401)
2. Hardware Specifications
- Revision: VH21 (firmware/hardware version)
- Style: S1 (compatible with legacy systems)
- Part Marking: S90440DL-00 (manufacturing code)
- Connectors: ESB ports for daisy-chaining I/O modules
- LED Indicators: Power, communication status, faults
3. Compatibility
- Works With:
- FIO (Field I/O) Units: AFV30D, AFV40S, A2FV50D
- Processor Modules: CP471 (requires Style S1 or later)
- CENTUM VP Versions: R4.x to R6.x (verify firmware compatibility)
4. Environmental & Certifications
- Operating Temp.: -20°C to +70°C
- Certifications: CE, IEC 61131-2 (industrial EMC/immunity)
Part Number Breakdown
| Segment | Description |
|---|---|
| SB301 | ESB Bus Master Module |
| -S1 | Style 1 hardware revision |
| VH21 | Firmware/board revision |
| F1/F2 | Factory configuration codes |
| S90440DL-00 | Yokogawa internal manufacturing ID |
Note:
- For non-redundant systems, install in Slot 7 of the FCU.
- For redundant setups, install a second SB301 in Slot 8.
Installation & Wiring
- Slot Assignment:
- Non-redundant: Slot 7 (Slot 8 must be covered with a dummy module).
- Redundant: Slots 7 & 8 (both modules active).
- ESB Cabling:
- Use shielded twisted-pair cables (max 10m per segment).
- Terminate bus ends with 50Ω resistors.
- Grounding:
- Ensure proper chassis grounding (<10Ω impedance).
Diagnostics & Troubleshooting
- Fault LEDs: Check for:
- PWR: Power failure (verify 24V DC supply).
- COM: ESB bus communication errors (check termination/cabling).
- Engineering Tools: Use CENTUM VP Engineering Studio to monitor ESB bus health.
SKU: YOKO-SB301STYLES1
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