With more than 30.000 high-quality spare parts, they can be sold immediately. Our large inventory allows us to quickly meet customer needs, thereby reducing downtime and protecting production schedules. Our timely delivery time provides you with security and save money.
The PN072139P904 is a highly integrated core power control board engineered by Schneider Electric exclusively for heavy-duty industrial inverter drive systems. Serving as the critical control hub between the power grid input and the high-capacity DC Bus, this board is extensively utilized in Schneider's high-power Altivar 61 (ATV61) and Altivar 71 (ATV71) series inverters.
It receives low-voltage PWM synchronization signals from the inverter's main control board
Through onboard high-frequency pulse transformers, it modulates the signals into high-energy current trigger pulses with sharp leading edges
These pulses accurately drive the input-side three-phase semi-controlled or fully-controlled thyristor bridges, achieving highly efficient AC-to-DC conversion
At the exact instant a high-power inverter starts, its massive internal DC bus capacitor bank effectively resembles a direct short circuit. The PN072139P904 integrates an intelligent pre-charging control logic that, during the initial power-on phase, routes the input current through current-limiting resistors to prevent destructive grid-side inrush currents from damaging the rectifier bridge and capacitors. Utilizing precise voltage sampling, once the bus voltage climbs to a safe predetermined percentage of its rated value, the onboard primary control relay instantly closes to bypass the resistors, achieving a seamless and smooth transition to full power.
To prevent kilovolt-level high voltages from the power side from piercing through to fragile microprocessor control terminals, the materials for the PN072139P904 are strictly selected. The control signal links fully utilize military-grade, high-speed optocouplers for physical isolation, combined with the electromagnetic isolation of pulse transformers, to form a dual physical barrier rated for breakdown voltages exceeding 2500V AC. This structural design completely insulates the inverter's control systems from catastrophic damage caused by external transient overvoltages, such as grid surges or lightning strikes.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Schneider PN072139P904 Charging Board Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Metallurgical and Steel Industry
Used in high-power inverters for blast furnace blowers, hot rolling mills, and converter tilting systems, ensuring stable rectification under severe grid harmonic interference to prevent unscheduled shutdowns.
Oil and Gas
Applied in the variable frequency drive (VFD) systems of deep-sea drilling platforms and long-distance pipeline pressurization stations (e.g., large water injection pumps and gas compressors) to provide moisture-resistant, salt-spray-resistant soft-start, and highly reliable rectification control.
Thermal Power
Used in boiler induced draft fans and feedwater pumps of thermal power plants, as well as unit starter drives in pumped-storage power stations, serving as the core trigger source for the rectification stage to guarantee high-continuity operation of auxiliary systems.
Paper and Pulp Industry
Used in the VFDs of multi-motor synchronous paper machine drive systems, providing high-precision, zero-time-delay thyristor trigger pulses in high-temperature, high-humidity environments to ensure constant paper tension.
Chemical and Petrochemical Industry
Installed inside the VFDs of extrusion pelletizers, high-pressure reactor agitators, and large compressors, providing corrosion protection and high-level electrical isolation to prevent false triggering caused by harsh onsite gases.
During use, disconnect all main AC input power lines and verify that the DC bus capacitors have discharged below 50 V DC via a multimeter before handling the board. Store and transport the unit exclusively within static-shielding bags to prevent electrostatic discharge (ESD) to the gate-trigger semiconductor circuits.
Ensure all terminal connection screws are torqued to specified values to limit contact resistance and localized heating on the FR-4 substrate.
Furthermore, maintain cabinet air filtration to prevent conductive dust accumulation between the tight track gaps of the high-density multilayer PCB, and perform insulation resistance testing prior to re-commissioning if the storage environment exceeds a 95% non-condensing relative humidity threshold.
Alternative Names
Alternative Names
PN072139P9O4PN072I39P904PNO72139P904PNO72I39P9O4
Technical notes
Technical notes
The PN072139P904 is a high-performance core electronic board designed by Schneider Electric specifically for Altivar (such as ATV61/ATV71) high-power inverters. It acts as a "bridge" in the inverter's main architecture, collaboratively performing DC bus pre-charging and silicon-controlled rectifier (SCR) trigger control. This board directly determines the stability of the inverter at the moment of power-on and its anti-disturbance capability during operation.
PN072139P904 is a high-performance, industrial-grade precision solenoid valve diaphragm assembly specifically designed for automated fluid control systems.
How to use a product like PN072139P904?
Install the assembly into the matching solenoid valve body. The diaphragm moves up and down driven by the energization and de-energization of the electromagnetic coil, thereby controlling the on-off flow of liquids or gases in the pipeline.
Which industrial sectors is PN072139P904 suitable for?
It is widely used in chemical processing, petrochemicals, water treatment, semiconductor cleaning equipment, and automated food and beverage packaging lines.
What types of fluid media can use PN072139P904?
It is suitable for neutral liquids, strong acid and alkali chemical dilutions, compressed air, industrial water, and low-pressure saturated steam.
What should be noted when installing PN072139P904?
Before installation, ensure the valve cavity is free of impurity particles. It must be aligned according to the media flow direction marked on the valve body, and bolts should be tightened evenly using a diagonal sequence.
Trusted by 5,000+ plants worldwide | Backed by our vast inventory of top-tier control parts, modules and cards, fast shipments are dispatched to cover your urgent needs. ABOUT US >>
Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
Videos
News
Applications
