XD2000-46P3-4B1221 — 18.5kW(HD)/22kW(ND) Three-Phase Variable Frequency Drive (415V)
The Lauritz Knudsen xD2000 XD2000-46P3-4B1221 is a 18.5kW/22kW 415V VFD. It is built for fan, pump, compressor, and other non-regenerative process applications on a 380–460VAC (-15/+10%), 3-phase, 50/60Hz supply. Because it combines a compact Frame 3 footprint with an inbuilt EMC filter and galvanic isolation, installation stays compact. From 4kW ND onward, it also includes a built-in DC reactor, which reduces harmonics and supports longer motor cable runs. Explore the complete range in our Lauritz Knudsen variable frequency drives collection.
18.5kW/22kW 415V VFD – Control & Motor Compatibility
The xD2000 supports V/F control (5-point), Slip Compensation, and quadratic V/F energy-saving. It also provides Open Loop control of Permanent Magnet synchronous motors, so it handles both induction and PM designs. Overload capacity reaches 150% of rated current for Heavy Duty use and 110% for Normal Duty use. In addition, the output frequency range spans 0.5–500Hz. As a 18.5kW/22kW 415V VFD, this drive is a strong fit for fans, pumps, compressors, and general utility process applications that do not require regenerative braking.
18.5kW/22kW 415V VFD – Pump & Fan-Specific Features
Built-in PID control (AHU, fan, pump, compressor) supports 4 preset PID references, PID wake-up/sleep with Sleep Boost, and predictive speed (pre-PID frequency). Because this 18.5kW/22kW 415V VFD targets pump and compressor duty, it also adds lead (master) and auxiliary pump selection with fixed and variable speed. FIFO/FILO staging and booster-pump control with staging and destaging round out the pump logic.
For example, stall prevention combines deceleration ramp adaptation with current limiting to protect the load. Skip frequency, catch-on-the-fly (flying start), and DC braking during stopping complete the application toolkit.
18.5kW/22kW 415V VFD – Built-in Modbus & Optional Profibus DP
A front-face RJ45 port gives native 2-wire RS485 Modbus RTU connectivity (4800–38400 bps). As a result, the XD2000-46P3-4B1221 links directly to a PLC, HMI, or SCADA system without extra hardware. Because this 18.5kW/22kW 415V VFD also supports an optional Profibus DP card (9-pin Sub-D, 9.6–12000 kbps, automatic baud-rate detection), it gains native CiA®402 drive-profile support plus PROFIdrive.
Setup from the drive side is quick, and the card supports two masters (MS0/MS1). Detachable, IP21-rated basic LCD keypads are standard, offering 4 lines, white backlight, 6 languages, and store/download configurations. However, an advanced graphical LCD keypad is also available as an option.
18.5kW/22kW 415V VFD – Applications
This 18.5kW/22kW 415V VFD is widely used for HVAC fans and AHUs, plus water and booster pumps. It also suits compressors and other non-regenerative utility and process applications across buildings, water treatment, and light industry.
Its enclosure is IP20 (IP4X on top with the vent cover). The inbuilt EMC filter complies with IEC/EN 61800-3 Category C3 in Environment 1 or 2 for CE marking. So a maximum shielded cable length of 50m applies.
Technical Specifications
| Model | XD2000-46P3-4B1221 |
|---|---|
| Output Power | 18.5 kW (Heavy Duty) / 22 kW (Normal Duty) |
| Output Current | 39.2 A (HD) / 46.3 A (ND) |
| Supply Voltage | 380–460VAC (-15/+10%), 3-phase, 50/60Hz |
| Frame Size | Frame 3 (S3) |
| Dimensions (W×H×D) | 211 × 495 × 232 mm |
| Weight | 13.5 kg |
| Enclosure | IP20 (IP4X on top with vent cover) |
| Output Frequency | 0.5 – 500 Hz |
| Control Modes | V/F, V/F 5-point, Slip Compensation, V/F Energy Saving & Quadratic V/F, Open Loop Synchronous (PM) Motor Control |
| Overload Capacity | 150% (Heavy Duty) / 110% (Normal Duty) of rated current for 1 min |
| Efficiency at Full Load | 96.6 – 98.3% |
| Communication | Built-in Modbus RTU via RJ45 (2-wire RS485); optional Profibus DP |
| Operating Temperature | -15 to +45°C (without derating), up to +60°C with derating |
| DC Reactor | 0.302 mH – 50A (built-in) |
| Recommended MPCB | MOG-H2M 63A |
| Recommended MCCB | DZ1-160N 63A |
| Recommended Main Contactor | MO 80 / MNX 80 (80A) |
| Cable Sizing (Supply & Output) | 10 (8) mm² (AWG) |
| Standards | CE, RoHS, IEC 61800-3, IEC 61800-5-1, IEC 60721-3 |
Why source it from Konica Automation?
Konica Automation is an authorised distributor for Lauritz Knudsen Electrical & Automation and supplies genuine drives with manufacturer specifications. Our engineers help you select and size the right drive, and support you through commissioning, spares and after-sales service across India. Browse the full Lauritz Knudsen range or contact us with your application details.
Frequently Asked Questions
Does the XD2000-46P3-4B1221 need braking capability? No — the xD2000 series is designed for non-regenerative fan, pump, and compressor applications that do not require dynamic braking.
Can it control Permanent Magnet (PM) motors? Yes, the xD2000 supports Open Loop control of Permanent Magnet synchronous motors in addition to standard induction motors.
Does it come with a DC reactor? Yes, a DC reactor is built in from 4kW(ND) ratings onward, reducing harmonics by roughly 40% at rated load.
Summary
In summary, the XD2000-46P3-4B1221 18.5kW/22kW 415V VFD pairs a Frame 3 footprint with inbuilt EMC filtering, PID-based pump/fan control, and native Modbus connectivity. It is a strong choice for HVAC, water, and general utility process applications.
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