Lauritz Knudsen xD2000 AC Drive – Specs & Programming Guide

xD2000 Series AC Drives: Complete Guide to Features, Specifications & Programming

⚡ The xD2000 from Lauritz Knudsen Electrical & Automation is a high-performance, general-purpose variable frequency drive built for fans, pumps, compressors and other non-regenerative process applications that don’t require braking — spanning a wide 0.37kW Heavy Duty to 160kW Normal Duty range. It’s designed for seamless integration into automation systems (with built-in Modbus and optional Profibus DP), robust operation in demanding environments, and energy-saving modes that keep running costs down. This guide covers everything from decoding the model number to wiring the drive and commissioning it for your application.

💡 Main Features

✅ Inbuilt DC reactor from 4kW ND upward (around 40% impedance at rated load, ~48% at 80% load) — protects the capacitor bank and inverter circuit against voltage fluctuations and reduces DC bus ripple, allowing motor cable runs up to 150–200m without an output filter, and up to 350m with a dV/dt filter, complying with IEC 60034-25
✅ Inbuilt EMC filter across the entire range, complying with Environment 2, Category C3 per IEC 61800-3 for CE marking — improves the drive’s immunity to external noise and gives internal noise a path to dissipate through ground
✅ Busbar plating to avoid chemical gas corrosion
✅ Robust galvanic isolation between the control and power circuits
✅ Detachable Basic LCD keypad (4 lines, IP21, white backlight, supported in 6 languages, with store-and-download configuration) connected via the front RJ45 port; an Advanced Graphical LCD keypad is available as an option
✅ Simple, crisp installation sheet included inside the packing box, plus a complete parameter list for easy reference
✅ Differently coloured control I/O terminals and clearly tagged power terminals to help avoid wrong connections
✅ Comprehensive monitoring: motor speed, current, voltage, torque and power; the motor’s thermal state and run time; energy monitors in Wh, kWh, MWh, GWh and TWh; separate monitors for the frequency reference and actual motor frequency; input AC supply voltage and DC bus voltage; and the number of starts applied
✅ External 24VDC connection for when 3-phase supply isn’t present — keeps the VFD display and control circuitry on, keeps fieldbus communication live, and lets you monitor I/O status and control digital inputs/outputs
✅ V/F, V/F 5-point, Slip Compensation, V/F Energy Saving & Quadratic V/F, and Open Loop control of Permanent Magnet Synchronous Motors (for VT applications)
✅ Stall prevention (deceleration ramp time adaptation and current limiting during running), Skip (Jump) Frequency, Catch-on-the-Fly (speed search/flying start), DC braking during stopping, Cooling Fan Control, and error-detect disabling (Fire Mode)

💧 Application-Specific Functions (Pumps, Compressors & Booster Sets)

Beyond the general-purpose feature set, the xD2000 has functions built specifically for pumping and compressor duty:

✅ Lead (Master) + Auxiliary pump selection with fixed and variable speed, plus FIFO/FILO (first-in-first-out / first-in-last-out) selection for rotating which pump leads
✅ Booster pump control with staging/destaging status as demand rises and falls
✅ Built-in PID for AHU, fan, pump and compressor duty — 4 preset PID references selectable via digital inputs, Wake-Up & Sleep mode with Sleep Boost, and PID Predictive Speed (Pre-PID frequency) to reach the target faster before the loop takes over
✅ Sleep mode can be triggered several ways: output frequency, a flow sensor, output power, a digital input, or a combination of multiple conditions

💡 The catalog documents two ready-made booster pump control patterns you can wire directly: one variable-speed pump plus two fixed-speed pumps (the xD2000’s relay outputs R2 and R3 switch contactors KM1/KM2 for pumps 2 and 3, while digital inputs DI2/DI3 report back whether each pump is ready to operate), and lead-pump alternation across three pumps (relay outputs R2, R3 and R4 control all three pumps via contactors/interposing relays, with digital inputs DI2–DI4 reporting pump-ready status; whichever pump’s relay activates first becomes the lead pump for that cycle, rotating the wear across all three over time).

📋 Understanding the xD2000 Model Number

Every xD2000 drive’s part number follows the format xD2000-1234-VIBDEF. Here’s how each position decodes:

Code Position	Meaning
xD	Product — xD = Drives
2000	Drive model number
1234	Current rating code (A) — e.g. 02P2 = 2.2A, 46P3 = 46.3A, 302P = 302A
V — Mains Voltage	4 = 3-Phase 380–460VAC (the only mains-voltage class this series is offered in)
I — IP Class	B = IP20
B — Braking Unit	1 = Without Braking Unit (the only option — see the FAQ below on why this series has no braking unit at all)
D — DC Reactor	2 = With DC reactor (standard from 4kW ND upward) · 1 = Without (below 4kW ND)
E — EMC Filter	2 = With EMC filter (built into every model in this series)
F — Future Use	1 = Reserved

💡 For example, XD2000-46P3-4B1221 is a 46.3A, 3-phase 380–460VAC drive, IP20, with no braking unit, a built-in DC reactor, and a built-in EMC filter.

🌐 Network Architecture

The xD2000 supports two fieldbus topologies. Over its built-in Modbus RTU serial link, a PLC connects through a Modbus splitter to a daisy chain of xD2000 drives via Modbus T-junctions, with line terminators fitted at the ends of the chain to prevent signal reflection. With the optional XDCI-PDP-V01 Profibus-DP card fitted, a PLC instead connects directly to a daisy chain of xD2000 drives over Profibus DP — useful for integrating into an existing Profibus-based plant network without a separate Modbus segment.

⚖️ Available Models & Ratings

The xD2000 is dual-rated: Normal Duty (ND, 110% overload for 60s) suits light, variable-torque loads like fans and pumps at a higher continuous kW, while Heavy Duty (HD, 150% overload for 60s) suits harder-starting, constant-torque loads like compressors at a lower continuous kW on the same drive. All ratings below are 3-phase, 380–460VAC.

Model No.	Power ND (kW)	Current ND (A)	Power HD (kW)	Current HD (A)	Apparent Power ND (kVA)	Apparent Power HD (kVA)	Input Current ND at 460V (A)	Input Current HD at 460V (A)
XD2000-02P2-4B1121	0.75	2.2	0.37	1.5	2.1	1.1	2.60	1.40
XD2000-04P0-4B1121	1.5	4.0	0.75	2.2	3.8	2.1	4.80	2.60
XD2000-05P6-4B1121	2.2	5.6	1.5	4.0	5.2	3.7	6.50	4.60
XD2000-07P2-4B1121	3.0	7.2	2.2	5.6	6.7	5.1	8.40	6.40
XD2000-09P3-4B1221	4.0	9.3	3.0	7.2	6.3	4.9	7.90	6.20
XD2000-12P7-4B1221	5.5	12.7	4.0	9.3	8.4	6.3	10.5	7.9
XD2000-15P8-4B1221	7.5	15.8	5.5	12.7	10.2	8.1	12.8	10.2
XD2000-23P5-4B1221	11	23.5	7.5	16.5	15.6	11.6	19.6	14.6
XD2000-31P7-4B1221	15	31.7	11	23.5	20.7	16.6	26.0	20.8
XD2000-39P2-4B1221	18.5	39.2	15	31.7	26.7	22.6	33.5	28.3
XD2000-46P3-4B1221	22	46.3	18.5	39.2	28.8	25.2	36.2	31.6
XD2000-61P5-4B1221	30	61.5	22	46.3	44.5	33.8	55.8	42.5
XD2000-74P5-4B1221	37	74.5	30	59.6	54.4	45.2	68.3	56.8
XD2000-88P0-4B1221	45	88.0	37	74.5	65.9	55.4	82.7	69.6
XD2000-120P-4B1221	55	120.0	45	88.0	79.5	66.9	99.7	84.0
XD2000-145P-4B1221	75	145.0	55	106.0	103.7	81.0	130.2	101.7
XD2000-173P-4B1221	90	173.0	75	145.0	127.4	110.0	159.9	138.1
XD2000-211P-4B1221	110	211.0	90	173.0	140.0	118.8	175.7	149.1
XD2000-250P-4B1221	132	250.0	110	211.0	162.4	138.7	203.8	174.2
XD2000-302P-4B1221	160	302.0	132	250.0	198.8	164.0	249.5	205.9

💡 This is the widest power range of any Lauritz Knudsen series covered so far — 20 models spanning 0.37kW HD up to 160kW ND, all in a single 380–460VAC voltage class.

🔧 Technical Specifications

Power range	0.37 – 132 kW (Heavy Duty) · 0.75 – 160 kW (Normal Duty)
Enclosure type	IP20 without the blanking plate on the upper part · IP4X with the top vent cover fitted
Isolation type	Galvanic isolation between control and power circuits
Rated voltage	3-Phase 380–460VAC (-15/+10%)
Rated frequency	50/60Hz (±5%)
Max output frequency	0.5–500Hz
Overload capacity	Heavy Duty: 150% of rated current for 1 min · Normal Duty: 110% for 1 min
Control method	V/F, V/F 5-point, Slip Compensation, V/F Energy Saving & Quadratic V/F, Open Loop control of Permanent Magnet Synchronous Motors
V/F patterns	Linear, S Ramp, U Ramp, Customized (S-curve)
Acceleration / deceleration time	0.0s – 6000s
Starting torque	150% at 3Hz in V/F
Braking torque	Around 20% of nominal motor torque on average, at low speed, without a dynamic braking resistor (DBR) — this series has no braking unit option at all, see the FAQ
Efficiency at full load	96.6 – 98.3%
Power factor	Displacement ≥ 0.98 · True PF ≈ 0.89 (below 4kW ratings, with line choke)
%THDi	38 – 47%
Built-in keypad	Detachable, Basic LCD (RJ45-connected), 4 lines, IP21, white backlight, 6 languages, store & download configurations
Optional keypad	Advanced Graphical LCD Keypad (RJ45-connected)
EMC filter	Built-in across the entire range, complying to IEC/EN 61800-3, Category C3 in Environment 1 or 2. Maximum length of shielded cable: 50m
DC reactor	Built-in from 4kW ND upward (~40% impedance at rated load, ~48% at 80% load)
Motor protection	Motor overload, overcurrent, short-circuit, ground short-circuit, e-thermal protection (motor thermal monitor), 1-Ph and 3-Ph output phase loss (no motor detection)
Drive protection	Precharge-circuit error, DC bus ripple error/capacitor damage, IGBT short-circuit, autotuning fault, drive overheating, overvoltage, undervoltage, input phase loss, load short-circuit, fieldbus interruption, HMI communication fault, IGBT overheat
Process protection	Motor overspeed, process overload, process underload, PI feedback fault, AI 4–20mA current loss
Communication protocol	Built-in Modbus (RTU frame) via RJ45, 2-wire RS485, 4800–38400bps · Optional Profibus DP via the XDCI-PDP-V01 card (9-pin Sub-D, CiA®402 profile, PROFIdrive-1, 9.6–12000kbps auto-detect)
Ambient temperature (operation)	−15°C to +45°C without derating · +45°C to +60°C with derating
Cooling	Forced fan cooling structure across the entire range
Compliance	CE, RoHS · IEC 61800-3, IEC 61800-5-1, IEC 60721-3

🔌 Wiring the xD2000 Drive

The xD2000 has three wiring zones: the main power circuit, the motor output, and the control terminal block.

Main power & motor circuit

✅ R/L1, S/L2, T/L3 — 3-phase 380–460V mains supply, with an optional line choke ahead of the drive if needed
✅ U/T1, V/T2, W/T3 — output to the motor
✅ A common protection pattern from the catalog: wire relay output R1 (set to trip on the drive’s Fault operating state) to a contactor (KM1) upstream of the drive, so the supply is automatically switched off the moment a fault is detected
✅ Earth (⎓) — ground terminal, all ratings

Control terminals

Terminal	Type	Function
DI1–DI6	Logic input	6 programmable digital inputs (sink/source), 24Vdc (30Vdc max), impedance 4.42kΩ — DI5/DI6 double as pulse inputs (0–30kHz) when needed
AI1	Analog input	Reference potentiometer input, 0–10Vdc / 0–20mA, wired via 10V/COM
AI2, AI3	Analog input	−10 to +10Vdc / 0–20mA, configurable as a temperature probe or water-level sensor input
AQ1, AQ2	Analog output	0–10Vdc / 0–20mA output, e.g. for a remote frequency or process meter
R1A/R1B/R1C	Relay output	Form C changeover relay contact — commonly wired to a fault indicator or contactor
R2A/R2C, R3A/R3C	Relay output	Form A relay contacts — commonly used for booster/auxiliary-pump switching circuits
P24, 0V	Power/reference	Onboard 24V supply rail and common, also used as the external 24VDC input point when 3-phase supply isn’t present

⚠️ Always wire and check connections with the drive fully powered down and the DC bus capacitors discharged. Keep control wiring separate from the motor power cable. The built-in DC reactor (4kW ND and above) and built-in EMC filter (entire range) between them allow motor cable runs of up to 150–200m without an output filter, or up to 350m with a dV/dt filter — check the exact figure for your model against the catalog before running unusually long cable.

💻 Programming & Commissioning the xD2000 Drive

The xD2000 ships with a detachable Basic LCD keypad and a full parameter list in the box, and can be extended with an Advanced Graphical LCD keypad or brought onto a Modbus or Profibus DP network for PLC-based control.

Keypad & display options

✅ XDOP-DOP-300 — standard detachable IP21 Basic LCD keypad (4 lines, white backlight, 6 languages), connected via RJ45, with XDKT-DOP-300 available as a remote-mounting kit
✅ XDOP-DOP-500 — optional IP65 Advanced Graphical LCD keypad for harsher environments, with XDKT-DOP-500 as its remote-mounting kit

Commissioning workflow

💡 Typical first-run sequence: power up the drive → enter the motor’s nameplate data (rated voltage, current, frequency and poles) → select the control mode that fits your load (V/F for general use, V/F Energy Saving or Quadratic V/F for centrifugal pumps/fans, or Open Loop control for a Permanent Magnet Synchronous Motor) → set the acceleration/deceleration ramp shape and time (linear, S-curve, U-curve or customized, 0.0–6000s) → assign the digital and analog I/O to match your wiring, keeping in mind DI5/DI6 can double as pulse inputs → for fan/pump/compressor systems, configure the built-in PID (reference source, feedback source, and Wake-Up/Sleep thresholds with Sleep Boost) → for multi-pump installations, wire and configure either the Lead+Auxiliary pump pattern or one of the two documented booster-pump control circuits (one variable + two fixed-speed pumps, or lead-pump alternation across three pumps) → set up your monitoring parameters (energy in kWh, run time, number of starts) if you want to track them from the keypad or over the fieldbus.

Communication setup

✅ Built-in Modbus (RTU frame) over the front RJ45 port (2-wire RS485, 4800–38400bps)
✅ Optional Profibus DP via the XDCI-PDP-V01 communication card (9-pin female Sub-D connector, native drive profile CiA®402 — 100, 101, 102, 106, 107 — plus PROFIdrive-1, auto-detected transmission rate from 9.6 to 12000kbps). The card supports standard identification and maintenance requests, diagnostic data with VSD (Variable Speed Drive) status, several DP V1 messaging modes, quick setup from the drive side, and the drive can be handled by two masters (MS0 and MS1) at once

🧩 Accessories

CAT No.	Description
XDOP-DOP-300	IP21 LCD Standard Graphical Keypad
XDKT-DOP-300	Remote Mounting Kit for IP21 LCD Keypad
XDOP-DOP-500	IP65 LCD Graphical Keypad
XDKT-DOP-500	Mounting Kit for IP65 LCD Keypad
XDIO-EX1-V01	I/O Expansion Card-1 — 6 Digital Inputs, 2 Digital Outputs, 2 Analog Inputs
XDIO-EX2-V01	I/O Expansion Card-2 — 3 Relay Outputs
XDCI-PDP-V01	Profibus-DP Communication Card

🏭 Typical Applications

✅ Fans, pumps & compressors — and other non-regenerative process applications that don’t need dynamic braking
✅ Multi-pump booster sets — using either the Lead (Master) + Auxiliary pump function, or one of the two documented booster-pump control circuits (one variable + two fixed-speed pumps, or lead-pump alternation across three pumps)
✅ AHU, HVAC and process control — with built-in PID, Wake-Up/Sleep and Sleep Boost for unattended, energy-efficient operation
✅ Installations needing long motor cable runs — the inbuilt DC reactor and EMC filter support runs up to 150–200m without an output filter, or 350m with a dV/dt filter
✅ Permanent Magnet Synchronous Motor (PMSM) driven fans and pumps in Open Loop, VT (variable torque) applications
✅ Plants standardized on Profibus DP — via the optional XDCI-PDP-V01 card, alongside the built-in Modbus RTU option

❓ Frequently Asked Questions

Does the xD2000 have a braking unit?

✅ No — unlike Lauritz Knudsen’s xD1000 and xD3000 series, the xD2000 has no braking unit option at all (the model number’s Braking Unit digit only ever reads “1: Without Braking Unit”). It’s positioned specifically for non-regenerative process applications — fans, pumps, compressors — that don’t need to actively dissipate braking energy. If your application needs dynamic braking (a hoist, a crane, or a load with frequent, fast decelerations), look at the xD1000 or xD3000 series instead.

What’s the difference between the ND and HD ratings?

✅ Normal Duty (ND) gives 110% overload for 60 seconds at a higher continuous kW — suited to light, variable-torque loads like fans and pumps. Heavy Duty (HD) gives 150% overload for 60 seconds at a lower continuous kW on the same drive — suited to harder-starting, constant-torque loads like compressors. Pick the rating that matches your load, not just the drive’s frame size.

Does the xD2000 need an external EMC filter?

✅ No — unlike the xD1000 (which always needs an external filter), every xD2000 model ships with a built-in EMC filter complying with IEC/EN 61800-3 Category C3 in Environment 1 or 2, good for up to 50m of shielded motor cable on its own.

Which communication protocols does the xD2000 support?

✅ Built-in Modbus RTU via RJ45 on every model, plus an optional Profibus DP card (XDCI-PDP-V01) for plants standardized on that protocol. This is broader fieldbus support than the xD1000 (Modbus RTU only), though CANopen and Ethernet-based options aren’t offered on this series — see the xD3000 series if you need those.

Can I run a lead pump plus an auxiliary or backup pump from one xD2000?

✅ Yes — the xD2000 has a built-in Lead (Master) + Auxiliary pump function with FIFO/FILO selection, plus two ready-made wiring patterns straight from the catalog: one variable-speed pump paired with two fixed-speed pumps, or lead-pump alternation across three pumps (the relay that activates first each cycle becomes that cycle’s lead pump, spreading wear evenly).

How long a motor cable can I run from an xD2000?

✅ Thanks to the built-in DC reactor (4kW ND and above) and built-in EMC filter (entire range), the xD2000 supports motor cable runs up to 150–200m without any additional output filter, and up to 350m with a dV/dt filter, complying with IEC 60034-25. Always check the exact figure for your specific model in the full catalog before committing to an unusually long run.

🛒 Shop the xD2000 Series

🚀 All 20 models are in stock and ready to ship:

XD2000-02P2-4B1121 — 0.37kW HD / 0.75kW ND
XD2000-04P0-4B1121 — 0.75kW HD / 1.5kW ND
XD2000-05P6-4B1121 — 1.5kW HD / 2.2kW ND
XD2000-07P2-4B1121 — 2.2kW HD / 3kW ND
XD2000-09P3-4B1221 — 3kW HD / 4kW ND
XD2000-12P7-4B1221 — 4kW HD / 5.5kW ND
XD2000-15P8-4B1221 — 5.5kW HD / 7.5kW ND
XD2000-23P5-4B1221 — 7.5kW HD / 11kW ND
XD2000-31P7-4B1221 — 11kW HD / 15kW ND
XD2000-39P2-4B1221 — 15kW HD / 18.5kW ND
XD2000-46P3-4B1221 — 18.5kW HD / 22kW ND
XD2000-61P5-4B1221 — 22kW HD / 30kW ND
XD2000-74P5-4B1221 — 30kW HD / 37kW ND
XD2000-88P0-4B1221 — 37kW HD / 45kW ND
XD2000-120P-4B1221 — 45kW HD / 55kW ND
XD2000-145P-4B1221 — 55kW HD / 75kW ND
XD2000-173P-4B1221 — 75kW HD / 90kW ND
XD2000-211P-4B1221 — 90kW HD / 110kW ND
XD2000-250P-4B1221 — 110kW HD / 132kW ND
XD2000-302P-4B1221 — 132kW HD / 160kW ND

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