XD1000 4kW 415V Variable Speed Drive – xD1000 Series VFD by Lauritz Knudsen
The Lauritz Knudsen XD1000-12P1-4B2111 is a 415V AC Variable Frequency Drive rated 4.00kW (Heavy Duty) / 5.50kW (Normal Duty) — this 4kW variable speed drive is part of the xD1000 AC Drive series from Lauritz Knudsen Electrical and Automation. Built on Frame S3, this is currently the largest and highest-power model in the xD1000-02P3 to 12P1 lineup available from Konica Automation, offering higher current handling and a heavier-gauge power terminal design to match its increased output. Full technical reference: lk-ea.com/cn/XD1000-12P1-4B2111.
Motor Control Modes
The XD1000-12P1-4B2111 supports multiple control algorithms to suit different load types: V/F Control (2 Point), Pump-optimized U2/F Control, Sensorless Vector Control (SVC), and Slip Compensation for improved speed accuracy under varying load — making it suitable for fans, pumps, conveyors, and general industrial motor control applications.
Built-in Braking Chopper
This model includes an integrated dynamic braking chopper as standard, enabling fast motor deceleration and controlled stopping without the need for an external braking unit — useful in applications requiring quick stops or frequent start/stop cycles.
Forced-Fan Cooling – Frame S3
As a Frame S3 unit, the drive uses forced-fan cooling (1 fan) to manage heat dissipation at this higher power rating, maintaining reliable operation with acoustic noise kept to approximately 50 dBA.
Built-in Modbus RTU
Integrated Modbus RTU communication allows the drive to be connected directly into a PLC or SCADA-based automation network for remote monitoring, parameter configuration, and centralized control — without requiring an external communication module.
Applications
As a 4kW variable speed drive, it is well suited for HVAC fans and pumps, water supply systems, compressors, conveyor systems, mixers, and general-purpose industrial motor control where a mid-to-high power 415V drive with robust overload capacity is required.
Technical Specifications
| Parameter | Heavy Duty (HD) | Normal Duty (ND) |
|---|---|---|
| Rated Output Power | 4.00 kW | 5.50 kW |
| Rated Output Current | 9.5 A | 12.1 A |
| Overload Capacity | 150% for 1 min | 110% for 1 min |
| Line Input Current (380V) | 13.7 A | 18 A |
| Line Input Current (460V) | 11.4 A | 14.9 A |
| Apparent Power (460V) | 9.1 kVA | 15.1 kVA |
| Output Frequency Range | 0.5–400 Hz | |
| Control Method | V/F (2 Point), Pump U2/F, SVC, Slip Compensation | |
| Switching Frequency | 2–12 kHz adjustable (nominal 4 kHz) | |
| Braking Chopper | Built-in | |
| Cooling | Forced fan (1 fan) | |
| Acoustic Noise | ~50 dBA | |
| Ambient Temperature | -10°C to +55°C (no derating) | -10°C to +50°C (no derating) |
| Enclosure Rating | IP20 (without blanking plate) / IP4X (top, with vent cover) | |
| Net Weight | 1.8 kg | |
| Dimensions (H x W x D) | 184 mm x 140 mm x 151 mm | |
| Recommended Power Cable | 4 mm² (12 AWG) | |
| Standards | CE, RoHS, IEC 61800-3, IEC 61800-5-1, IEC 60721-3 | |
Note: This model uses a heavier 4mm² (12 AWG) power cable gauge, a step up from the 2.5mm² (14 AWG) cabling used on the smaller S1/S2-frame xD1000 models, reflecting its higher current rating.
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.
FAQ
Q: Can this drive be used for pump and fan applications?
A: Yes, the built-in Pump U2/F control mode is specifically designed for variable-torque pump and fan loads.
Q: Does it need an external braking resistor unit?
A: No external chopper unit is required — the braking chopper is built into the drive; an external braking resistor can still be added for higher braking duty if needed.
Q: What communication protocol does it support?
A: Built-in Modbus RTU is standard for integration with PLC/SCADA systems.
Summary
The Lauritz Knudsen XD1000-12P1-4B2111 is a 4.00kW(HD)/5.50kW(ND) 415V VFD on Frame S3 with built-in braking chopper, forced-fan cooling, multiple control modes, and Modbus RTU communication — the highest power model currently listed in the xD1000 series from Konica Automation.
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