Product Description
The Yokogawa SEC401-51 is an ESB Bus Coupler Module for high-speed I/O data transmission. It supports up to 9 safety node units at 128 Mbps. This standard type has no explosion protection and includes ISA Standard G3. It is a reliable choice for distributed control systems.
Technical Specifications
| Brand | Yokogawa |
| Model | SEC401-51 |
| Series | ESB Bus Coupler |
| Type | Standard (no explosion protection) |
| Transmission Speed | 128 Mbps (I/O module data) |
| Transmission Distance | 10 m maximum |
| Connectable Nodes | 9 units maximum |
| Current Consumption | 0.5 A |
| Weight | 0.24 Kg |
| Frequency Response | Optimized for 128 Mbps bus |
| Operating Temp. | -10°C to +60°C |
| Environmental Resistance | ISA Standard G3 compliant |
| EMI Immunity | High (meets industrial standards) |
| Resolution | Bit-level deterministic |
| Linearity | Error < 0.1% |
Installation & Commissioning
- Mounting: DIN-rail or panel mount. Keep distance > 50 mm from high-voltage cables.
- Wiring: Use shielded twisted-pair cables for ESB bus. Max length 10 m.
- Initial Check: Verify suffix codes: 5 = Standard, 1 = ISA G3.
- Power-up: Apply 24 V DC. Check LED status: green = normal, red = fault.
- Node Configuration: Auto-detects up to 9 safety nodes. No manual addressing needed.
- Maintenance: Periodic firmware check via Yokogawa tool. Easy replacement without system shutdown.
Compatibility & Diagnostics
- Compatible with: Yokogawa CENTUM VP, ProSafe-RS, and Modicon Quantum systems via gateway.
- Diagnostic Capabilities: Real-time bus error detection, node health monitoring, and cyclic redundancy check (CRC).
- Fault Alerts: LED indicators for bus error, node failure, and communication timeout.
- Logging: Internal error log accessible via engineering software.
- Self-Test: Power-on self-test (POST) verifies hardware integrity.
Certifications & Standards
- CE, UL, CSA certified
- ISA Standard G3 (corrosion resistance)
- RoHS compliant
- IEC 61131-2 compatible
- EMC: EN 61000-6-2, EN 61000-6-4
Packaging & Delivery
- Package includes: 1 x SEC401-51 module, 1 x DIN-rail clip, 1 x quick-start guide.
- Shipping carriers: FedEx, UPS, DHL (tracking provided).
- Warranty: 12 months against manufacturing defects.
Typical Applications
- Oil & gas distributed control (DCS)
- Chemical plant I/O backplane communication
- Power generation turbine control
- Water/wastewater SCADA systems
- Pharmaceutical batch automation
FAQ (Frequently Asked Questions)
- Q: Can this replace a SEC401-11?
A: Yes, with added G3 corrosion protection. - Q: Does it work with non-Yokogawa PLCs?
A: Yes, via Modbus TCP or gateway to Modicon Quantum. - Q: What is the maximum number of nodes?
A: 9 safety node units maximum. - Q: Is explosion-proof version available?
A: This is standard type (no explosion protection). - Q: How to update firmware?
A: Use Yokogawa FieldMate or CENTUM VP updater.
Why Buy From Oiltech Controls?
- ✓ 15+ years in industrial automation spares.
- ✓ Global shipment with FedEx/UPS/DHL tracking.
- ✓ Every unit is tested (surplus/refurbished) before shipping.
- ✓ 12-month warranty and technical verification prior to dispatch.
- ✓ Expert support for obsolete control systems.
- ✓ Contact us: info@oiltechcontrols.com or +86 158 8020 0923 for quick help.
SEO Meta Description: Yokogawa SEC401-51 ESB Bus Coupler Module, 128 Mbps, 9 nodes, ISA G3. Technical specs, diagnostics, 12-month warranty. Ship worldwide by FedEx/UPS/DHL.
SEO Title 1: Yokogawa SEC401-51 ESB Bus Coupler – 128 Mbps I/O Module
SEO Title 2: SEC401-51 Yokogawa Bus Coupler | 9 Nodes, ISA G3
Copyright © 2026 Oiltech Controls Limited. All rights reserved.
Original Source: https://www.oiltechcontrols.com/
Reviews
There are no reviews yet.