YOKOGAWA VF701-S3 / VF701-S1 Communication Card | Replacement, Equivalent & Selection Guide
The YOKOGAWA VF701-S3 and VF701-S1 are communication interface cards designed for YOKOGAWA variable frequency drive (VFD) systems. These cards enable seamless fieldbus integration, remote monitoring, and control in industrial automation environments. Whether you are sourcing an original unit or evaluating compatible replacements, this guide covers everything you need to make the right selection.
Technical Specifications
- Model Numbers: VF701-S3 / VF701-S1
- Manufacturer: YOKOGAWA Electric Corporation
- Module Type: Communication Option Card
- Compatible Drive Series: YOKOGAWA VF700 Series Variable Frequency Drives
- Communication Protocols: VF701-S3 – PROFIBUS-DP; VF701-S1 – RS-485 / Modbus RTU
- Mounting: Plug-in option slot (drive-integrated)
- Power Supply: Supplied internally via drive option slot
- Operating Temperature: -10°C to +50°C
- Storage Temperature: -20°C to +65°C
- Weight: Approx. 520 g (packaged)
- Certifications: CE, UL (subject to drive system)
Compatible Replacement & Equivalent Models
When the original VF701-S3 or VF701-S1 is unavailable or discontinued, the following alternatives may be considered based on protocol and mechanical compatibility:
- VF701-S3 (PROFIBUS-DP): Functionally equivalent to YOKOGAWA SI-P3/V option cards used in later VF series drives; third-party PROFIBUS-DP option cards with matching connector pitch may also be evaluated.
- VF701-S1 (RS-485 / Modbus RTU): Compatible with standard RS-485 Modbus RTU communication cards sharing the same option slot form factor; verify baud rate range (up to 115200 bps) and register mapping before substitution.
- Cross-brand equivalents: Drives from Fuji Electric, Mitsubishi, and Omron offer similar communication option cards — direct pin-for-pin substitution is not possible, but protocol-level integration via external gateways is a viable workaround.
Always verify mechanical dimensions, connector type, and firmware compatibility before installing any replacement card.
Why Choose the Original Model
- Guaranteed compatibility: Factory-validated for YOKOGAWA VF700 series drives — no firmware patching required.
- Stable fieldbus performance: Optimized timing and register mapping for YOKOGAWA drive parameter sets.
- Long service life: Industrial-grade components rated for continuous 24/7 operation.
- OEM support: Eligible for YOKOGAWA technical support and firmware updates.
- Reduced integration risk: Eliminates compatibility unknowns that arise with third-party alternatives.
Typical Applications
- Factory automation and conveyor control systems
- HVAC and building management systems (BMS) with PROFIBUS or Modbus backbone
- Water treatment and pump station remote monitoring
- Crane and hoist drive control with fieldbus supervision
- Process industries: chemical, pharmaceutical, food & beverage
System Compatibility
- Drive Series: YOKOGAWA VF700 / VF-S7 / VF-S9 (confirm option slot type before ordering)
- PLC / DCS Integration: Compatible with Siemens S7, Mitsubishi MELSEC, Schneider Modicon, and ABB AC500 via respective fieldbus masters
- SCADA / HMI: Supports integration with Wonderware, iFIX, and WinCC via PROFIBUS or Modbus TCP gateway
- Network Topology: VF701-S3 supports PROFIBUS-DP star/line topology; VF701-S1 supports RS-485 multi-drop up to 32 nodes
Selection Guide
Use the table below to select the correct model for your application:
| Requirement | Recommended Model |
|---|---|
| PROFIBUS-DP fieldbus integration | VF701-S3 |
| Modbus RTU / RS-485 serial control | VF701-S1 |
| Legacy RS-232 interface needed | Consult Konmask for gateway options |
| EtherNet/IP or PROFINET required | Consider YOKOGAWA SI-EN3 or gateway adapter |
Not sure which model fits your system? Contact our technical team at support@konmask.com with your drive model number and PLC brand.
Quality Assurance & Sourcing
- All units sourced from authorized distributors or verified surplus channels.
- Each card undergoes visual inspection and functional verification prior to shipment.
- Original YOKOGAWA packaging and documentation preserved where available.
- Traceability records maintained for B2B and OEM customers upon request.
- Warranty: 90-day replacement warranty on all stocked units.
How to Order
- Confirm your drive model number (e.g., VF7S-4055PL) and option slot availability.
- Select VF701-S3 (PROFIBUS-DP) or VF701-S1 (RS-485 / Modbus RTU) based on your fieldbus protocol.
- Add to cart and proceed to checkout, or contact us for bulk/OEM pricing.
- For urgent requirements, email support@konmask.com or call +0086 19859288691 for expedited sourcing.
Replacement & Compatibility FAQ
Q: Can VF701-S3 replace VF701-S1?
A: No. They use different communication protocols (PROFIBUS-DP vs. RS-485/Modbus RTU). Select based on your fieldbus standard.
Q: Is the VF701-S3 compatible with YOKOGAWA VF-S11 drives?
A: The VF701 series is designed for the VF700 platform. Compatibility with VF-S11 depends on the option slot form factor — please verify before ordering.
Q: Can I use a third-party PROFIBUS card instead of VF701-S3?
A: Mechanically possible if the connector and slot dimensions match, but YOKOGAWA does not officially support third-party option cards. Register mapping and timing may differ.
Q: Do you offer programming or configuration support?
A: Yes. Our technical team can assist with basic parameter configuration. Contact us for details.
Q: What is the lead time for VF701-S3 / VF701-S1?
A: In-stock units ship within 1–3 business days. Out-of-stock items are typically sourced within 7–15 business days.
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Contact: support@konmask.com | +0086 19859288691
