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The PN-173122 PN-200959 are specific part numbers for critical inverter power supply and trigger boards commonly used in industrial automation, variable frequency drives, and PLC systems. They are frequently associated with manufacturers like Allen Bradley, Siemens, and various guard logic platforms.
High rated isolation voltage
Completely covered with lacquer cover
Simultaneously produces multiple independent low-voltage DC power supplies
PN-173122 PN-200959 usually functions as a standalone hardware module partitioned directly between the primary control core unit and the underlying heavy-duty inverter thyristors. This hardware extracts electricity from the high-voltage DC bus link and channels it through onboard multi-path isolated transformation tracks to produce multiple groups of regulated low-voltage DC electricity dedicated to powering the control processors and communication cards.
Concurrently, it receives faint electrical impulses dispatched from the upper command layer and executes logic current amplification before precisely routing this sufficient trigger electricity to the gate and emitter pins of the power components through heavy-duty bolt-on terminal blocks or multi-conductor ribbon cables.
By utilizing a specific industrial surface overlay alongside physical optocoupler isolation boundaries, the model establishes a robust physical bulkhead against conductive carbon black accumulation, humid dust blankets, and transient noise generated during high-frequency current switching within control enclosures.
Consequently, this shielding prevents high-voltage counter-currents from surging backward into sensitive electronics and guarantees the secure propagation of internal data streams and power distribution pathways throughout the long-term uninterrupted deployment of the industrial drive.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Allen-Bradley PN-173122 PN-200959 Power Supply Inverter 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.
Steel & Metallurgy
Used in main rolling mill VFDs to control the inverter unit for heavy-duty torque output of the roller motor.
Cement Manufacturing
Installed in high-voltage VFD cabinets of rotary kilns and vertical mill separators to ensure power transmission in dusty environments.
Oil & Gas Extraction
Applied in VFD speed control modules of top drives, mud pumps, and water injection pumps on drilling platforms.
Thermal Power
Used in VFDs of large induced draft fans, forced draft fans, and feedwater pumps to convert weak pulses into gate power.
Rail Transit
Applied in locomotive traction test benches or heavy VFD inverter units for the main cutterhead drive of tunnel boring machines.
Petroleum Refining
Drives and monitors the high-power VFD speed control main circuits of oil transfer pumps and condensing fans in hydrocracking units.
During the use of PN-173122 PN-200959, it is critical to use a multimeter to strictly confirm that the DC bus capacitors have fully discharged to a safe voltage below 50V after cutting the main power before touching the board.
Because its surface integrates numerous microprocessors and lacks explosion-proof certifications, field technicians must wear anti-static wrist straps (ESD protection) throughout the entire removal and maintenance process, while ensuring the VFD cooling fans run properly to prevent excessive heat accumulation on components.
Finally, when deployed in dusty or oily environments, the board surface must be regularly blown clean with dry, low-pressure compressed air, and the tightening torque of the bolt-on terminals or multi-core ribbon cables must be inspected to prevent contact loosening or leakage carbonization flashovers caused by high-frequency, heavy-load vibrations.
PN-173122 PN-200959 is a printed circuit board assembly used for high-low voltage signal conversion and energy distribution inside high-power variable frequency drive systems. Relying on a multi-layer copper foil trace layout, this component takes the high-voltage DC power introduced from the internal main DC bus of the drive and converts it through integrated multi-channel transformer isolation topologies into multi-channel regulated low-voltage DC power for use by the main control board, fieldbus modules, and logic calculation units. Meanwhile, serving as a communication bridge between the main control brain and the power inverter devices, this hardware is responsible for amplifying the logic current of the weak control pulses emitted from the upper level and delivering sufficient trigger electrical energy to the gate and emitter pins of the thyristors via bolt-on terminals or dedicated multi-core ribbon cables. Within dusty and oily industrial control cabinet environments, its unique surface conformal coating barrier combined with integrated optocouplers constructs a solid physical defense line to prevent electromagnetic hash generated during high-current interruption from back-feeding into the control loops, thereby ensuring the stable transmission of internal signal chains and energy flows throughout the continuous operation of the machine.
They are the inverter power supply and gate drive control printed circuit board (PCB) assemblies inside Allen-Bradley high-power variable frequency drives.
How to properly use products like PN-173122 PN-200959 in a drive?
It must be installed as a spare part inside a compatible PowerFlex drive chassis, connecting to the main control unit and IGBT modules via multi-pin ribbon cables and power busbars.
What is the core function of PN-173122 PN-200959?
It is primarily responsible for distributing internal control power and providing precise pulse trigger drive signals for high-power insulated-gate bipolar transistors (IGBTs).
Why are both numbers PN-173122 and PN-200959 visible on this single drive board?
PN-173122 is typically the etched number of the bare printed circuit board, while PN-200959 is the finished catalog part number after all electrical components are populated.
In which drive models is PN-173122 PN-200959 primarily applied?
It is widely applied in Allen-Bradley classic high-power PowerFlex 700 or 700S series heavy-duty variable frequency drives.
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