Industrial environments often expose critical frequency signals from turbine flowmeters, rotary encoders, and speed sensors to severe electromagnetic noise and long-distance attenuation. The NEWPWR NPFC C1D Frequency Pulse Signal Transmitter Isolator provides a robust industrial solution, converting 0.1 Hz to 100 kHz pulse inputs into isolated 4-20 mA analog signals. By delivering reliable three-port isolation and essential sensor power distribution, this DIN rail conditioner protects control systems from ground loops and signal corruption.
# NEWPWR NPFC C1D Frequency Pulse Signal Transmitter Isolator DIN Rail
Frequency pulse signal transmission in heavy industrial automation frequently suffers from line loss, voltage drops, and high-frequency electrical noise. Integrating a high-performance analog signal conditioner directly into the control cabinet ensures that signals from fast-moving rotary encoders or volumetric flowmeters remain stable before reaching the PLC or DCS. The NEWPWR NPFC series engineered frequency变送器 addresses these performance bottlenecks by combining wide-range pulse capture with galvanic isolation. Operating on independent power supplies, these units prevent common-mode voltage spikes from damaging sensitive downstream input cards while maintaining linear transmission accuracy across fluctuating industrial loads.
Technical Specifications
Power Supply: 18 ~ 60 V DC @ Nominal Operation
Input Signal: Frequency Pulse Signal 0.1 Hz ~ 100 kHz @ Standard Conditions
Pulse Width: ≥ 5 µs @ Input Frequency Max
Input Impedance: ≥ 10 kΩ @ Signal Terminal
Signal Trigger Low Level: 0 ~ 2 V @ Customer Configurable
Signal Trigger High Level: 4 ~ 30 V @ Custom Specification Accepted
Sensor Distribution Voltage: 24 V DC @ 20 mA Output Voltage ≥ 22 V Default
Alternative Distribution Voltage: 12 V DC @ 20 mA Output Voltage ≥ 11 V
Output Signal: 4 ~ 20 mA @ Analog Standard
Allowed Load Resistance: RL ≤ 550 Ω @ 24 V DC Loop
Response Time: Ta ≤ 500 ms @ Step Input Change
Working Power Consumption: 1.6 W @ 24 V DC Input
Electromagnetic Compatibility: IEC 61326-3-1 @ Industrial Standards
Dielectric Strength: ≥ 1500 V AC @ Input/Output/Power Terminals
Insulation Resistance: ≥ 100 MΩ @ 500 V DC Test
Operating Temperature: -20 ℃ ~ +60 ℃ @ Standard Rack Mounting
Storage Temperature: -40 ℃ ~ +80 ℃ @ Non-Condensing
Fault State Input Break: LED Flashing @ Sensor Disconnected
Fault State Input Over-Range: LED Solid ON @ Maximum Threshold Exceeded
Connection Type: Screw Connection @ Terminal Block
Dimensions: Width 12.8 mm × Height 110 mm × Depth 117 mm @ DIN Rail Profile
Mounting Type: DIN 35 mm Rail Installation @ Standard Enclosure
Product Certifications: CE, FCC @ Global Compliance Standards
Core Specifications and Shared Features
The entire NPFC product family shares a robust foundational architecture designed for demanding measurement loops. Each unit supports an expansive frequency input range spanning from 0.1 Hz up to 100 kHz, capable of resolving rapid pulse trains with a minimum pulse width requirement of 5 µs. Comprehensive three-port electrical isolation separates the input, output, and power supply circuits, delivering a dielectric strength rating of 1,500 V AC and an insulation resistance exceeding 100 MΩ. Advanced on-board diagnostics provide immediate visual feedback through front-panel LED indicators, flashing during input wire breaks and glowing solid during signal over-range conditions. Furthermore, operators can configure fault response output currents between 0 to 22 mA via PC configuration tools or handheld programmers.
Model Lineup and Architectural Comparison
Selecting the correct model depends on power distribution infrastructure, channel density, and system integration strategies. The product lineup is divided between traditional terminal-powered G-series units and high-density backplane-powered variants.
- Power Supply Variants: Models such as the NPFC-C1D and NPFC-C11D utilize an 18 to 60 V DC terminal power supply suited for standard instrument loops, whereas the NPFC-C1 and NPFC-C11 are designed for 85 to 265 V AC facility power networks.
- C-Series vs. H-Series Architecture: Standard C-series units feature individual screw terminals with front-end configuration flexibility. The H-series variants, including the NPFC-H1D, NPFC-H11D, and NPFC-H1AD, optimize cabinet space through backplane power distribution and accommodate specialized inputs like NAMUR proximity switches and three-wire transistor signals, with the NPFC-H1AD adding independent relay alarm functionality.
- Channel Configuration: Single-channel models (NPFC-C1D, NPFC-C1, NPFC-H1D) provide one-in-one-out signal isolation, while dual-channel versions (NPFC-C11D, NPFC-C11, NPFC-H11D) offer a one-in-two-out configuration to duplicate frequency measurements for separate control and recording instruments.
Practical Selection Advice
Engineers specifying frequency isolation hardware should first evaluate field sensor requirements, including excitation voltage demands and signal types such as push-pull encoders or NAMUR switches. For standard 24 V DC control cabinets requiring single-channel conversion of rotary encoder outputs, the flagship NPFC-C1D delivers optimal performance and direct DIN rail compatibility. When control architectures demand signal duplication for secondary monitoring systems, upgrading to dual-output variants like the NPFC-C11D eliminates the need for external splitters. For high-density installations utilizing system backplanes or requiring programmable relay trip thresholds, the H-series variants provide advanced configuration adaptability. Technical teams requiring assistance with cross-reference matching or model selection can consult with Beijing Zhongping Technology for prompt engineering support and localized stock fulfillment.
Reliability and Environmental Durability
Industrial signal conditioners must withstand harsh electrical and thermal environments within secondary control enclosures. The NPFC series is built to comply with strict electromagnetic compatibility standards under IEC 61326-3-1, ensuring resilient operation in proximity to variable frequency drives and high-voltage switchgear. Operating reliably across an ambient temperature range of -20 ℃ to +60 ℃, these instruments manage internal thermal dissipation efficiently, with standard power consumption levels remaining under 2 W for single-channel configurations. The rigid polyamide housing design incorporates secure screw terminal blocks and snaps effortlessly onto standard 35 mm DIN rails, ensuring long-term mechanical stability and resistance to continuous industrial vibration.
Frequently Asked Questions (FAQ)
1. What is the current stock availability and delivery timeframe for urgent replacements?
Beijing Zhongping Technology maintains extensive regional stock reserves of core models like the NPFC-C1D to ensure same-day dispatch and minimize industrial downtime.
2. What warranty coverage and return merchandise authorization (RMA) processes apply?
All units supplied by Beijing Zhongping Technology include a comprehensive 12-month operational warranty, backed by pre-shipment quality verification and streamlined RMA support.
3. What are the electrical power supply requirements and internal power consumption levels?
The NPFC-C1D operates on a DC power range of 18 to 60 V DC with a working power consumption of 1.6 W, while AC-powered variants accept 85 to 265 V AC.
4. How does the device handle electromagnetic interference and signal isolation?
The unit provides three-port galvanic isolation across input, output, and power circuits with a dielectric strength of 1,500 V AC and compliance with IEC 61326-3-1.
5. What environmental temperature limits and physical protection ratings are specified?
The device operates within a temperature range of -20 ℃ to +60 ℃, is stored safely between -40 ℃ to +80 ℃, and mounts securely on standard DIN 35 mm rails.
6. What physical dimensions and terminal connection types are utilized?
The standard unit measures 12.8 mm in width, 110 mm in height, and 117 mm in depth, utilizing reliable industrial screw connection terminals for secure wiring.
7. How are input faults and signal over-range conditions diagnosed in the field?
Front-panel LED indicators provide real-time status updates, flashing during input wire breaks and remaining solidly illuminated when input signals exceed the configured range.
8. Can the measurement range and output fault states be customized or programmed?
Users can configure input measurement ranges, output signal types, and fault response modes using a standard PC connection tool or a dedicated handheld programmer.
FAQ
1.Who are We?
Beijing Zhongping Technology Co., LTD., is a global industrial electrical automation service provider, is a scientific research, design, marketing, technical services, industrial Internet, international import and export services as one of the science and technology companies.
2.What can you buy from us?
PLC, inverter, human-machine interface, hydraulic products, low-voltage power distribution, industrial robots and core components
3.Is the item in stock or need to be purchased from another supplier?
We have a large inventory of goods and have our own warehouse.
4.What advantages do we have over other suppliers?
Our company has a large amount of inventory and a number of warehouses, but also in the country's important industrial provinces and cities with offices and a number of overseas service points. To provide you with intelligent manufacturing one-stop comprehensive services, save efforts, labor and cost.
5.Can you provide 100% new original authentic products?
We only sell new original genuine, no renovation, no fake, only for the original factory original!
6.How long is the delivery time?
If there is a stock, it will take 2-3 working days to ship, if the quantity is large, it will take 5-7 working days after receiving the payment, if it is not a conventional model, it will take some time, we will inform you of the specific delivery time.
7.Is there technical support available?
Of course, we have a professional technical team that can help you solve technical problems.
8.How do we guarantee quality?
We have three processes to control the quality of goods.
1) Our engineers will inspect the production and quality control in the factory regularly.
2) Incoming materials shall be inspected by experienced purchasing engineers before they can be stored.
3) At least 2 people in the logistics department cross-check the goods to be sent before delivery.
9.Can you guarantee the safe and reliable delivery of your products?
Yes, we strictly adopt the international standard packing. We also use special packaging for dangerous goods, and refrigerated shipping for items with temperature requirements. Special item packaging and general cargo standard packaging requirements may incur additional costs.
10.How about the freight?
The cost depends on how you choose to get the goods. Express is usually the fastest but also the most expensive way. Sea freight is the best solution for large quantities of goods. The exact shipping cost depends on the purchase amount、quantity and weight of your order. Please feel free to contact us for more information.
+86 010-64225983
+8613811814778
Building 26, Liyuan Community, Chaoyang District, Beijing, China
