Lenze 2002B2B 0.75kW 2000 Series AC Frequency Inverter
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Product Information
The Lenze 2002B2B is a 0.75 kW 3-phase AC frequency inverter from the Lenze 2000 Series designed for precise speed regulation of asynchronous AC induction motors. Operating across a mains supply voltage range of 380 V to 480 V AC, this compact IP20 panel-mount drive delivers up to 2.5 A of continuous output current with a maximum output frequency of 240 Hz. It utilizes versatile V/f characteristic control, supporting linear profiles for constant-torque industrial equipment as well as quadratic curves optimized for energy savings in centrifugal pump and ventilation fan applications.
Integrating a replacement 2002B2B into an existing machine requires matching hardware configurations and parameter settings. Control wiring connects via onboard screw terminals that accept 0–10 V or 0–20 mA analog speed setpoints, digital enable inputs, and a TR1/TR2 relay fault contact. Drive parameters are stored in internal non-volatile EEPROM memory and can be transferred to a spare unit using the Lenze Global Drive Control (GDC) software tool over a LECOM serial connection or directly via the optional 2102 IB operating module keypad. ABC Industrial Parts can support maintenance teams requiring spare units or configuration transfer assistance for these legacy drives.
System monitoring and troubleshooting are supported by front-panel green RUN and red FAULT/TRIP status LEDs, as well as specific TRIP error codes displayed when the 2102 IB keypad is attached. Common trip conditions include overtemperature (OH), overcurrent during acceleration or deceleration (OC1, OC2, OC3, OC5), overvoltage (OU), undervoltage (LU), parameter errors (PR), or fieldbus loss (CE). If internal EEPROM failure (EE) or hardware board damage prevents normal operation, field service is limited, and replacing or exchanging the unit through ABC Industrial Parts provides a direct solution to minimize production downtime.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 2002B2B |
| Model / Type | 2002B2B |
| Component Type | AC Frequency Inverter |
| Product Family | 2000 Series |
| Rated Power Output | 0.75 kW |
| Supply Voltage Range | 380 - 480 V AC |
| Continuous Output Current | 2.5 A |
| Maximum Output Frequency | 240 Hz |
| Control Method | V/f Characteristic Control |
| Mounting Orientation | Vertical Panel Mount |
| Protection Rating | IP20 |
Programming and Configuration
Parameter management on the Lenze 2002B2B frequency inverter relies on non-volatile internal EEPROM memory, preserving operating parameters during power-off states. Drive setup can be performed directly through the optional plug-in 2102 IB keypad module or via PC software using Lenze Global Drive Control (GDC). GDC allows technicians to read out complete drive parameter sets, modify V/f curves, adjust acceleration and deceleration ramps, and clone saved profiles onto replacement units.
Configurable parameters include load-specific control profiles, allowing selection between linear V/f characteristics for constant-torque machines like conveyors and quadratic curves optimized for variable-torque fan and pump loads. In the event of parameter corruption or misconfiguration, a parameter reset to factory defaults can be triggered, allowing a clean baseline setup before re-entering application specifications.
Communication and System Integration
The Lenze 2002B2B includes integrated screw terminal blocks for primary control wiring. These terminals support analog speed setpoint signals in 0–10 V or 0–20 mA formats, digital enable and run signals, and a relay output contact (TR1/TR2) dedicated to fault reporting.
For automated network environments, the drive incorporates a modular expansion interface slot. This slot accepts plug-in communication modules, including LECOM modules for serial communication over RS232 or RS485, and the 2131 IB PROFIBUS-DP module. These network interfaces enable remote start/stop control, setpoint adjustment, and real-time drive status monitoring within industrial automation networks.
Diagnostics and Status Indication
Operational status and basic diagnostic feedback on the front panel of the Lenze 2002B2B are indicated by two LEDs. A solid green RUN LED confirms normal inverter operation, while a solid or flashing red FAULT/TRIP LED indicates that a fault has occurred and the inverter output has been disabled.
Detailed diagnostic information is accessible by attaching the optional 2102 IB keypad module, which displays specific TRIP fault codes. In addition, real-time status data and trip history can be monitored via a PC running Lenze Global Drive Control (GDC) software connected through a LECOM communication module.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| RUN | Green - Solid | Inverter in normal operational mode |
| FAULT / TRIP | Red - Solid / Flashing | Fault condition detected; output state disabled |
Replacement and Spare Part Considerations
When swapping a damaged Lenze 2002B2B, verify that the replacement drive shares identical power ratings (0.75 kW, 380–480 V AC 3-phase, 2.5 A output). Before commissioning, transfer the original parameter profile saved in EEPROM using the 2102 IB keypad or Lenze Global Drive Control software to match application acceleration ramps, motor parameters, and I/O logic.
Ensure any optional communication adapters—such as LECOM serial modules or the 2131 IB PROFIBUS-DP module—are physically transferred to the replacement drive and seated correctly in the interface slot. If migrating away from legacy hardware, the Lenze i550 series (such as model i55AE207F10010000S) serves as a modern replacement path offering similar power ratings and panel-mounting options.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| OH | Overtemperature | Heatsink temperature exceeded allowable threshold limit | Insufficient cooling air flow, clogged heatsink fins, excessive ambient temperature, drive overload | Clean heatsink, ensure adequate cabinet ventilation, reduce motor load |
| OC1 | Short Circuit / Earth Fault | Instantaneous overcurrent detection due to short circuit or earth fault | Short circuit between motor phases, earth fault in motor wiring or motor windings | Check motor cable and motor isolation; inspect output terminals for short circuit |
| OC2 | Acceleration Overcurrent | Excessive current limit reached during motor acceleration phase | Acceleration time ramp set too short, motor mechanical overload, incorrect motor parameters | Increase acceleration time ramp; verify motor parameters and mechanical load |
| OC3 | Deceleration Overcurrent | Excessive current limit reached during motor deceleration phase | Deceleration time ramp set too short, high load inertia, missing brake chopper/resistor | Increase deceleration time ramp; install braking module/resistor if needed |
| OC5 | Continuous Overload | Motor overload I x t threshold exceeded | Motor continuously operated above rated current capacity, mechanical jamming | Check motor mechanical load, verify continuous current rating |
| OU | DC Bus Overvoltage | DC bus circuit voltage exceeded upper safety threshold limit | Excessive regenerative energy from motor during deceleration, deceleration ramp too fast, high mains supply voltage | Increase deceleration ramp time, check mains line voltage, install braking resistor |
| LU | DC Bus Undervoltage | DC bus circuit voltage dropped below lower operational threshold limit | Mains voltage phase loss, severe mains supply dip, mains power disconnection | Check input mains voltage supply and phase connections |
| EE | EEPROM Memory Error | Internal EEPROM parameter checksum error or hardware memory defect | Power failure during parameter save, internal EEPROM failure | Reset parameters to factory defaults; internal hardware failure — return unit for repair if fault persists |
| CE | Communication Error | Communication breakdown between inverter and plug-in LECOM/fieldbus module | Loose module connector, faulty communication module or wiring, baud rate mismatch | Check communication cable connection and plug-in module seating; verify communication parameters |
| PR | Parameter Fault | Invalid parameter configuration or conflicting parameter entries | Parameter outside allowable range or incomplete setup | Re-check parameter list settings or restore factory defaults |
Frequently Asked Questions
What software is required to configure the Lenze 2002B2B drive?
The drive can be configured using Lenze Global Drive Control (GDC) PC software over a LECOM serial interface module. Alternatively, parameters can be adjusted directly using the plug-in 2102 IB operating module keypad.
What do the LEDs on the front panel of the 2002B2B indicate?
A solid green RUN LED indicates normal operational mode. A solid or flashing red FAULT/TRIP LED indicates a detected fault condition that has disabled the drive output.
Which communication modules are supported by the expansion slot?
The interface slot supports plug-in LECOM serial modules (RS232 or RS485) and the 2131 IB PROFIBUS-DP fieldbus module for network integration.
How do I resolve an EE fault code on the Lenze 2002B2B?
An EE code indicates an EEPROM memory checksum error. Attempt a reset to factory default parameters. If the error persists, it indicates an internal hardware defect that requires repair or unit replacement.
What modern inverter series replaces the legacy Lenze 2002B2B?
The Lenze i550 cabinet inverter series, such as model i55AE207F10010000S, serves as a modern replacement path for legacy 2000 Series drives.
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