XD4000 55kW(HD)/75kW(ND) 415V Three-Phase Variable Frequency Drive | xD4000 Series VFD

XD4000-145P-4C2221 — 55kW(HD)/75kW(ND) Three-Phase Variable Frequency Drive (415V)

The Lauritz Knudsen xD4000 XD4000-145P-4C2221 is a 55kW(HD)/75kW(ND) 415V VFD — a heavy-industrial, general-purpose variable frequency drive. It is built for crane/hoist duty, pump & PID process control, and general OEM/process automation applications.

Every xD4000 drive ships with a built-in DC reactor and a built-in EMC filter (C2/C3 compliant), and is part of the flagship Lauritz Knudsen range. Explore the full Lauritz Knudsen variable frequency drives collection on Stockhai.

55kW(HD)/75kW(ND) 415V VFD – Control & Motor Compatibility

As a heavy-industrial 55kW(HD)/75kW(ND) 415V VFD, the XD4000-145P-4C2221 supports open-loop V/F control (5-point), slip compensation and Sensorless Vector Control (SVC). It also provides closed-loop vector control with encoder feedback for asynchronous motors, plus native control laws for permanent magnet (PM) and reluctance motors.

Because of this range of control modes, the drive delivers 150% overload (Heavy Duty) / 120% overload (Normal Duty) of rated current for 1 minute. Its output frequency spans 0.1–599 Hz, and efficiency reaches up to 98.6% at full load — so torque and speed control stay reliable across induction, PM and reluctance motor types.

55kW(HD)/75kW(ND) 415V VFD – Crane & Hoisting Features

For crane, hoist and material-handling duty, the XD4000-145P-4C2221 — a 55kW(HD)/75kW(ND) 415V VFD — provides dedicated brake control with brake feedback, plus separate brake-release current settings for hoisting and lowering. It also supports high-speed hoisting, which adapts motor speed to load so an empty hook can travel faster.

In addition, the drive includes rope slack detection, external load measurement via a weight sensor, and dynamic load / load-variation detection. It also offers open- and closed-loop torque control for winder applications, plus positioning by limit switches or sensors. A built-in braking transistor is standard up to 160kW HD.

55kW(HD)/75kW(ND) 415V VFD – Pump, PID & Oil-Field Features

For pumping and process applications, this 55kW(HD)/75kW(ND) 415V VFD includes a built-in PID controller with 4 preset references, plus sleep/wake-up and sleep-boost modes. It also provides pre-PID predictive frequency, so the drive adapts smoothly to varying process loads.

The ENA (Energy Adaptation) / Sucker-Rod function supports progressive cavity pumps (PCP) in oil & gas duty. It allows operation without a braking resistor, reducing mechanical stress and energy use, and is complemented by Backspin Control for PCP pumps. In addition, feedback monitoring covers pipe break, fire-hydrant-opened, mechanical breakdown and water-leakage conditions. Pump cycle monitoring also tracks start counts to avoid unwanted aging.

55kW(HD)/75kW(ND) 415V VFD – Master-Slave, MultiDriveLink & Connectivity

Using the onboard Ethernet port, one master XD4000-145P-4C2221 — a 55kW(HD)/75kW(ND) 415V VFD — can coordinate up to 10 slave drives via MultiDriveLink. This enables speed synchronisation or torque/load sharing in common-shaft applications such as dual-motor kilns, tandem or grab cranes, long belt conveyors and parallel-chain textile stenters. As a result, drives can be wired in daisy-chain, star or redundant-ring (RSTP) topology over standard Ethernet cabling.

Communication is built-in via Modbus RTU / Modbus TCP / Ethernet IP, with 1 RJ45 port for Modbus plus 2 RJ45 ports for Modbus TCP/Ethernet IP. Optional PROFIBUS-DP, PROFINET, DeviceNet, CANopen, EtherCAT and POWERLINK cards are also available. All of this is managed from the advanced 8-line, IP65, 2-colour graphical LCD keypad.

55kW(HD)/75kW(ND) 415V VFD – Applications

As a 55kW(HD)/75kW(ND) 415V VFD, the XD4000-145P-4C2221 suits DRI kiln ID/bag-filter fans, tandem & grab cranes, wire drawing tower wheels and AS/RS systems. It also suits primary/secondary jaw crushers, large centrifugal pumps, paper mill fans & compressors and sugar mill grooved roller feeders.

Beyond these, it serves other applications across water & wastewater, chemical & petrochemical, food & beverage, building/HVAC, metal & mining, paper and OEM segments.

Technical Specifications

Why Buy From Stockhai?

Stockhai is an authorised online partner for Lauritz Knudsen Electrical & Automation, offering genuine XD4000-145P-4C2221 drives at the best price with fast, reliable delivery across India. As a 55kW(HD)/75kW(ND) 415V VFD, every unit is 100% authentic and backed by manufacturer warranty.

In addition, our technical team supports selection, sizing and after-sales assistance. So you can order with confidence and get your project moving without delay.

Frequently Asked Questions

Is the XD4000-145P-4C2221 capable of crane or hoist duty?
Yes. It includes brake control with brake feedback, rope slack detection, high-speed hoisting and dynamic load detection, making it suitable for crane, hoist and winder applications.

Can the XD4000-145P-4C2221 run pump/PID applications?
Yes. It has a built-in PID controller with sleep/wake-up modes, plus ENA (Energy Adaptation) and Backspin Control for progressive cavity (sucker-rod) pumps in oil & gas duty.

Does the XD4000-145P-4C2221 support master-slave torque sharing?
Yes, via MultiDriveLink over the onboard Ethernet port, allowing 1 master drive to synchronise speed or share torque/load with up to 10 slave drives.

Summary

In short, the Lauritz Knudsen xD4000 XD4000-145P-4C2221 — a 55kW(HD)/75kW(ND) 415V VFD — is a flagship heavy-industrial VFD. It combines crane-grade hoisting control, pump/PID intelligence, Master-Slave MultiDriveLink connectivity and a rugged built-in DC reactor and EMC filter, all in a compact S5 frame. Buy it genuine, at the best price, only on Stockhai.