YOKOGAWA NFAP135-S00 S2 Pulse Input Module | Replacement, Equivalent & Selection Guide
The YOKOGAWA NFAP135-S00 S2 is a high-precision Pulse Input Module designed for the YOKOGAWA CENTUM VP / CS 3000 DCS platform. It accepts pulse-type signals from flow meters, encoders, and other field instruments, converting them into reliable digital data for process control systems. This page provides full technical specifications, compatible replacement options, and a structured selection guide to help engineers and procurement teams make confident sourcing decisions.
Technical Specifications
- Model: NFAP135-S00 S2
- Manufacturer: YOKOGAWA Electric Corporation
- Module Type: Pulse Input Module
- Compatible Platform: CENTUM VP, CENTUM CS 3000
- Input Channels: 4 channels (typical for NFAP135 series)
- Input Signal Type: Pulse (contact / voltage pulse)
- Max Input Frequency: Up to 5 kHz (per channel)
- Power Supply: Supplied via field control station backplane
- Communication: Internal DCS bus (V-net / ESB bus)
- Isolation: Channel-to-channel and channel-to-bus isolation
- Operating Temperature: 0°C to 55°C
- Weight: Approx. 280 g
- Suffix Code: S00 S2 (standard configuration, revision 2)
- Certifications: CE, UL (refer to YOKOGAWA datasheet for full listing)
Compatible Replacement & Equivalent Models
When the NFAP135-S00 S2 is unavailable or discontinued, the following models may serve as functional replacements or equivalents. Always verify compatibility with your specific DCS firmware version and I/O configuration before substitution.
- YOKOGAWA NFAP135-S00 S1 — Earlier hardware revision; functionally equivalent in most applications. Confirm firmware compatibility.
- YOKOGAWA NFAP135-S10 — Extended variant with additional configuration options; check suffix code mapping.
- YOKOGAWA AAP135 — Analog/Pulse hybrid module; suitable for mixed-signal applications.
- YOKOGAWA AMM12 — Multi-channel analog input module; use when pulse-to-analog conversion is acceptable at the field level.
- Third-party equivalents: Modules from Emerson DeltaV or Honeywell Experion with pulse input capability may be considered for cross-platform migration projects, but require full system re-engineering.
Note: Konmask.com recommends using original YOKOGAWA parts for mission-critical applications. Contact our team for cross-reference verification.
Why Choose the Original NFAP135-S00 S2
- Guaranteed Compatibility: Designed and validated for CENTUM VP / CS 3000 — no firmware conflicts or I/O mapping issues.
- Proven Reliability: YOKOGAWA modules are engineered for 24/7 continuous operation in demanding industrial environments.
- Factory Calibration: Each module ships pre-calibrated, reducing commissioning time and risk.
- Long-term Support: YOKOGAWA provides extended lifecycle support, spare parts, and firmware updates.
- Regulatory Compliance: Meets international safety and EMC standards required for process industries.
Typical Applications
- Flow measurement via turbine or vortex flow meters (pulse output)
- Encoder position and speed feedback in motion control loops
- Batch counting and totalizing in chemical and pharmaceutical processes
- Utility metering (gas, water, electricity pulse outputs)
- Conveyor speed monitoring in material handling systems
- Oil & gas production well monitoring
System Compatibility
- YOKOGAWA CENTUM VP (all revisions)
- YOKOGAWA CENTUM CS 3000 (R3.x and above)
- Field Control Station (FCS): KFCS, LFCS, PFCS series
- Engineering Tool: CENTUM VP Engineering Environment (ENG)
- Not compatible with: CENTUM XL, MICRO XL, or ProSafe-RS safety systems (different I/O bus architecture)
Selection Guide
Use the following criteria to confirm the NFAP135-S00 S2 is the right module for your application:
- Step 1 — Confirm DCS Platform: Verify your FCS is CENTUM VP or CS 3000. Check the station model number on the backplane label.
- Step 2 — Check Slot Availability: Confirm an open I/O slot exists in the target FCS nest. NFAP135 occupies one standard I/O slot.
- Step 3 — Verify Signal Type: Ensure field instruments output pulse signals (contact closure or voltage pulse). For 4–20 mA signals, select an analog input module instead.
- Step 4 — Review Frequency Range: Confirm the maximum pulse frequency from your field device does not exceed the module’s rated input frequency.
- Step 5 — Check Suffix Code: S00 = standard I/O configuration; S2 = hardware revision 2. Match the suffix to your existing installed base for seamless hot-swap replacement.
- Step 6 — Firmware Alignment: Ensure your CENTUM VP / CS 3000 firmware version supports the S2 hardware revision. Consult YOKOGAWA IM 33J01B30-01EN for details.
Quality Assurance & Sourcing
- All modules sourced by Konmask.com are inspected for physical integrity and authenticity prior to dispatch.
- Original factory packaging preserved where available.
- Traceability documentation (manufacturer lot codes, inspection records) available on request.
- We supply both new original and tested used / refurbished units — clearly labeled at time of quotation.
- Export compliance: YOKOGAWA products may be subject to Japanese export control regulations (FEFTA). Konmask.com handles all necessary documentation for international shipments.
How to Order
- Part Number: NFAP135-S00 S2
- Manufacturer: YOKOGAWA Electric Corporation
- Availability: Contact us for real-time stock status and lead time.
- Minimum Order: 1 unit
- Lead Time: In-stock items ship within 3–5 business days; sourced items 2–6 weeks.
- Payment: T/T (Bank Transfer), PayPal, Trade Assurance accepted.
- Shipping: DHL / FedEx / UPS worldwide. Export documentation included.
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Replacement & Compatibility FAQ
Q: Can I replace NFAP135-S00 S1 with NFAP135-S00 S2 without reconfiguration?
A: In most cases yes — the S2 revision is backward compatible. However, always verify with YOKOGAWA’s revision change notice for your specific firmware version.
Q: Is the NFAP135-S00 S2 hot-swappable?
A: Yes, CENTUM VP supports online module replacement (OMR) for qualified I/O modules. Confirm OMR is enabled in your FCS configuration before performing a hot swap.
Q: What is the difference between NFAP135 and AAP135?
A: NFAP135 is a dedicated pulse input module; AAP135 supports both analog and pulse inputs. Choose AAP135 only if you require mixed-signal capability on the same module.
Q: Can this module be used in a ProSafe-RS safety system?
A: No. ProSafe-RS uses a separate SIL-rated I/O bus and requires dedicated safety I/O modules. NFAP135-S00 S2 is not certified for safety instrumented systems.
Q: Do you provide a warranty?
A: Yes. Konmask.com offers a 90-day functional warranty on all tested units and passes through the original manufacturer warranty on new-in-box items.
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