Lenze I51AE125B10010000S i510 Frequency Inverter
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Product Information
The Lenze I51AE125B10010000S is a compact 0.25 kW (0.33 hp) frequency inverter from the i510 cabinet drive range, belonging to the Lenze i500 product family. Operating on a single-phase 230 V AC supply network (180 to 264 V AC at 45 to 65 Hz) with a rated output current of 1.7 A, this drive regulates speed across dynamic applications such as conveyors, pumps, and ventilation fans. Built in an IP20 housing suitable for DIN rail or panel mounting, it includes an integrated RFI filter for electromagnetic suppression directly within the footprint. Control options support both Sensorless Vector Control (SLVC) and V/f characteristic curves, with adjustable switching frequencies up to 16 kHz and output frequencies from 0 to 599 Hz.
For physical and fieldbus connectivity, the unit provides onboard Modbus RTU and CANopen communication via integrated control terminals without requiring separate option cards. Operational I/O includes 5 digital inputs, a 50 mA digital output, a relay output, and a switchable 12-bit analog input supporting 0-10 V or 0/4-20 mA signals. Commissioning or installing a replacement spare unit involves loading parameter profiles using Lenze EASY Starter software or connecting plug-in modules such as the MADU000000000S USB module, MADW000000000S WLAN module, or MADK000000000S keypad display. Standardized parameter structures enable rapid transfer of drive setups from a failing unit to a replacement, with ABC Industrial Parts supplying verified hardware to minimize operational downtime during changeouts.
Diagnostic evaluation is managed through front status LEDs alongside onboard memory tracking. The RDY LED displays drive ready, running, and inhibited states in green and yellow, while the ERR LED uses blinking or solid red states to indicate warning conditions, trip faults, or severe hardware failures. Live diagnostic channels allow monitoring of DC-bus voltage, motor current, output frequency, and heatsink temperature, while fault logs are stored under parameters P200.00 and P203.00. Initial field checks should address supply voltage stability, line fuses, motor cable insulation, and terminal connection torque. When fast-blinking error indicators or persistent EEPROM and power stage errors indicate unserviceable board-level failure, sourcing a replacement unit through ABC Industrial Parts ensures swift restoration of machine control.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | I51AE125B10010000S |
| Model / Type | i510 Cabinet Drive |
| Product Family | i500 |
| Rated Power (kW) | 0.25 kW |
| Rated Power (HP) | 0.33 hp |
| Supply Voltage | 230 V AC (1-phase, 180-264 V AC) |
| Supply Frequency | 45 - 65 Hz |
| Rated Output Current | 1.7 A |
| Output Frequency Range | 0 - 599 Hz |
| Switching Frequency | 2, 4, 8, 16 kHz |
| Control Modes | V/f Characteristic Control, Sensorless Vector Control (SLVC) |
| Integrated RFI Filter | Yes |
| Onboard Fieldbus Protocols | Modbus RTU, CANopen |
| Digital Inputs | 5 |
| Digital Outputs | 1 (50 mA) + 1 Relay Output |
| Analog Inputs | 1 (12-bit, switchable 0-10 V / 0/4-20 mA) |
| Protection Rating | IP20 |
| Mounting Type | DIN Rail or Panel Mount |
Programming and Configuration
Drive parameterization and operational configuration for the Lenze I51AE125B10010000S are performed using Lenze EASY Starter engineering software or the Lenze Smart Keypad app. Parameter profiles dictate fundamental motor parameters, control modes (SLVC or V/f), acceleration and deceleration ramps, and network address assignments across the integrated fieldbus interfaces.
Interfacing with the drive for setup or parameter duplication requires inserting a compatible diagnostic module into the front interface slot. Options include the USB diagnostic module (MADU000000000S) for direct PC connection, the WLAN module (MADW000000000S) for wireless connection to mobile devices, or the plug-in keypad display (MADK000000000S). Quick-parameter copy routines allow maintenance teams to upload saved parameter sets to new units during drive replacement, preventing manual re-entry errors.
Communication and System Integration
The Lenze I51AE125B10010000S features built-in Modbus RTU and CANopen fieldbus interfaces connected directly via onboard control terminals. These integrated protocols permit speed reference commands, run and stop control, and diagnostic polling from host controllers without necessitating additional option cards or expanding the drive footprint.
Machine control integration is supplemented by terminal-based I/O options. The inverter incorporates 5 digital inputs for control commands, 1 digital output rated at 50 mA, 1 programmable relay output for status signaling, and 1 flexible 12-bit analog input switchable between 0–10 V voltage signals and 0/4–20 mA current loops.
Diagnostics and Status Indication
Operational state monitoring and trouble analysis on the Lenze I51AE125B10010000S combine visual indicator LEDs, real-time value tracking, and structured parameter event logs. Operating parameters P200.00 and P203.00 store detailed error history records for identifying intermittent trip causes. Real-time parameters display DC-bus voltage, output current, operating frequency, and heatsink temperature via the EASY Starter diagnostic cockpit, Smart Keypad app, or keypad display menu.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| RDY | Green / Yellow - Glowing / Blinking | Green glowing = Drive ready for operation; Green blinking = Drive enabled / running; Yellow blinking = Drive inhibited / ready |
| ERR | Red - Glowing / Blinking | Red blinking = Warning condition; Red glowing continuous = Fault trip condition; Red fast blinking = Internal hardware fault requiring drive repair or replacement |
Replacement and Spare Part Considerations
Replacing a Lenze I51AE125B10010000S frequency inverter requires matching the physical frame size, 1-phase 230 V AC power rating, 1.7 A output current rating, and onboard Modbus RTU and CANopen terminal configurations. Installing a replacement unit demands copying the existing parameter configuration set from the original drive using an optional USB adapter (MADU000000000S), WLAN adapter (MADW000000000S), or keypad (MADK000000000S).
Before commissioning a spare unit, technicians should verify that motor parameters, application ramp times, and fieldbus communication settings are properly restored. Unserviceable internal hardware faults, such as output short circuits persistent with the motor disconnected or recurring EEPROM memory errors (0x0011), indicate that the drive hardware requires full replacement rather than field service.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| 0x0001 | Earth fault | Ground fault / earth fault detected at motor output phase. | Short circuit to earth in motor cable or motor winding. | Check motor cable and motor insulation resistance. Check output phase connections. |
| 0x0002 | Short circuit at output | Short circuit detected between motor output terminals. | Inter-phase short circuit in motor cable or motor terminal box; internal inverter bridge short circuit. | Check motor wiring for inter-phase short circuit. If error persists with motor disconnected, internal hardware fault requires unit replacement. |
| 0x0003 | Overcurrent output | Inverter output peak current limit exceeded. | Acceleration time too short, motor overload, mechanical blockage, incorrect motor parameters. | Increase acceleration time, check motor parameters, check mechanical load for blockages. |
| 0x0004 | DC-bus overvoltage | Intermediate circuit DC-bus voltage threshold exceeded. | Deceleration time too short, generatoric motor operation, regenerative energy too high. | Increase deceleration time, enable DC bus voltage controller, install brake chopper/resistor if supported. |
| 0x0005 | DC-bus undervoltage | Intermediate circuit DC-bus voltage dropped below minimum operating limit. | Mains supply voltage too low, mains phase failure, power outage. | Check mains input voltage, check line fuses and supply wiring. |
| 0x0006 | Motor phase failure | Missing output phase detected between drive and motor. | Interrupted motor line, contactor open, motor winding open circuit. | Check motor cable connections and terminal torque. Check contactors in motor circuit. |
| 0x0007 | Mains phase failure | Mains supply phase imbalance or single phase missing. | Unbalanced supply network, blown line fuse, bad connection on input terminals. | Check mains voltage stability and line connection fuses. |
| 0x0008 | Heatsink overtemperature | Inverter heatsink temperature exceeds maximum allowable limit. | Insufficient cooling, ambient temperature too high, fan failure, dirty heatsink fins. | Improve enclosure ventilation, clean heatsink fins, check fan operation. |
| 0x000A | Motor overload (I2t) | Calculated thermal load of motor exceeded limit. | Continuous mechanical overload on motor, incorrect motor current settings. | Check motor sizing against load, verify motor nameplate data in drive parameters. |
| 0x000B | Inverter overload (I2t) | Calculated thermal overload of inverter power stage. | Frequent heavy acceleration cycles, drive undersized for load duty cycle. | Reduce dynamic load requirements or select next size drive. |
| 0x0011 | EEPROM memory fault | Internal parameter memory checksum error during power-up or save operation. | Power failure during parameter store, internal memory corruption. | Restore factory defaults and reload parameter set. If fault persists, internal hardware fault requires unit replacement. |
Frequently Asked Questions
What power rating and supply voltage does the Lenze I51AE125B10010000S drive support?
The Lenze I51AE125B10010000S operates on a single-phase 230 V AC supply (180 V to 264 V AC, 45 to 65 Hz) and delivers a rated output power of 0.25 kW (0.33 hp) with a 1.7 A rated output current.
What fieldbus communication protocols are built into this drive?
Modbus RTU and CANopen fieldbus communications are built directly into the drive via onboard control terminals, eliminating the need for external communication option cards.
Which software tools and plug-in modules are compatible with the i510 drive?
Configuration and diagnosis can be performed using Lenze EASY Starter engineering software or the Lenze Smart Keypad app. Compatible plug-in diagnostic modules include the USB module (MADU000000000S), WLAN module (MADW000000000S), and keypad display (MADK000000000S).
What do the RDY and ERR status LEDs indicate?
The green/yellow RDY LED indicates operational readiness (glowing green), running state (blinking green), or inhibited state (blinking yellow). The red ERR LED indicates warnings (blinking red), trip faults (glowing red), or internal hardware failures requiring replacement (fast blinking red).
What motor control methods are supported by the I51AE125B10010000S?
The drive supports V/f characteristic control (linear or square-law) and Sensorless Vector Control (SLVC), with adjustable output frequencies from 0 to 599 Hz and selectable switching frequencies up to 16 kHz.
What action should be taken if fault code 0x0002 or 0x0011 occurs?
For fault 0x0002 (Short circuit at output), check motor wiring; if the fault persists with the motor disconnected, an internal hardware failure has occurred requiring drive replacement. For fault 0x0011 (EEPROM memory fault), restore factory defaults and reload parameters; if the error remains, unit replacement is necessary.
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