Lenze I55AE155F1AV10000S – i550 Cabinet Frequency Inverter 0.55 kW
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Product Information
The Lenze I55AE155F1AV10000S is a 0.55 kW (0.75 hp) variable frequency inverter designed for control cabinet integration within the Lenze i500 product family. Operating across a 3-phase mains supply voltage range of 320 to 528 V AC at 45 to 65 Hz, this compact drive delivers a continuous output current of 1.8 A at 400 V AC and 1.5 A at 480 V AC in an IP20 open-type housing. It controls both AC induction motors and permanent-magnet synchronous motors with output frequencies ranging from 0 to 599 Hz, offering motor regulation methods that include linear/quadratic V/f control, sensorless vector control (SLVC), sensorless synchronous motor control (SL-PSM), and closed-loop vector control (CLVC). Integrated Safe Torque Off (STO) functional safety certified to SIL 3 and PL e levels, a built-in EMC filter, and an integrated dynamic brake chopper provide reliable motion control while conserving internal enclosure space.
Field connections and terminal wiring are established through pluggable spring-cage control terminals incorporating 5 digital inputs, 2 analog inputs, 1 PNP digital output, 1 relay output, and 1 analog output. Commissioning and spare-unit preparation are streamlined by an onboard plug-in EPM memory card slot, enabling parameter cloning without main line voltage applied to the drive. Setup and parameter adjustment can also be conducted through the built-in Micro-USB interface using Lenze EASY Starter software, or wirelessly via the optional WLAN module I5MADW0000000S and Smart Keypad App. Industrial fieldbus integration is accomplished using modular plug-in extensions supporting PROFINET, EtherCAT, EtherNet/IP, Modbus RTU, CANopen, PROFIBUS DP, and IO-Link networks. ABC Industrial Parts supports maintenance teams with pre-configured replacement units and parameter replication directly from removable storage modules.
Operational status and error detection are indicated via front-mounted RDY (Ready) and ERR (Error) dual status LEDs and 4-digit keypad diagnostic display codes. Complete diagnostic data and fault tracking are accessible through active fault parameter P200.00, historical fault log P205.00, or live trace monitoring in EASY Starter. First-line field checks should verify mains line voltage balance across L1, L2, and L3, output motor phase connections U, V, and W, motor insulation resistance, and clear cooling fin airflow. If diagnostics indicate power stage short circuits or internal hardware degradation, board-level repairs are non-serviceable in the field, and procuring a tested exchange drive through ABC Industrial Parts offers a rapid path back to full plant operation.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | I55AE155F1AV10000S |
| Model / Type | i550 Inverter |
| Product Family | i500 |
| Rated Power (kW) | 0.55 kW |
| Rated Power (HP) | 0.75 hp |
| Supply Voltage Range | 320 - 528 V AC |
| Supply Mains Phase | 3-Phase |
| Supply Frequency Range | 45 - 65 Hz |
| Continuous Output Current (400V) | 1.8 A |
| Continuous Output Current (480V) | 1.5 A |
| Output Frequency Range | 0 - 599 Hz |
| Default Switching Frequency | 8 kHz |
| Control Modes | V/f, Sensorless Vector (SLVC), Sensorless Synchronous (SL-PSM), Closed-Loop Vector (CLVC) |
| Functional Safety | Safe Torque Off (STO) SIL 3 / PL e |
| Digital Inputs | 5 |
| Digital Outputs | 1 PNP (50 mA) + 1 Relay Output |
| Analog Inputs | 2 (12-bit, 0-10V / 0-20mA / 4-20mA) |
| Analog Outputs | 1 (0-10V / 0-20mA / 4-20mA) |
| Enclosure Rating | IP20 / NEMA Open Type |
Programming and Configuration
Parameter management and drive commissioning rely on the pluggable EPM memory card module located on the inverter body. The EPM card stores all user parameters, motor data, and application profiles. Because parameter data can be written or cloned using an external memory programmer without applying mains voltage to the inverter, spare drives can be formatted prior to cabinet installation or swapped directly during emergency service.
Detailed engineering, software parameterization, and real-time diagnostic trace routines are conducted using Lenze EASY Starter software over the integrated Micro-USB interface. For wireless control and parameter monitoring, the drive supports the optional WLAN module I5MADW0000000S, enabling field technicians to adjust parameters, view operational statistics, and monitor drive behavior via the Lenze Smart Keypad App.
Communication and System Integration
The Lenze i550 cabinet inverter utilizes a flexible modular interface design to interface with centralized machine control networks. The base drive accepts optional fieldbus communication modules that plug directly into the unit, offering native integration into PROFINET, EtherCAT, EtherNet/IP, Modbus RTU, CANopen, PROFIBUS DP, and IO-Link industrial automation environments.
Field connection points utilize pluggable spring-cage terminal blocks for rapid installation and maintainability. Physical input/output capabilities include 5 configurable digital inputs, 2 resolution-matched analog inputs (0-10V, 0-20mA, or 4-20mA), 1 digital PNP output, 1 high-capacity relay output, and 1 analog output, alongside hardwired safety terminals for the integrated Safe Torque Off (STO) functional safety circuit certified to SIL 3 and PL e.
Diagnostics and Status Indication
Local drive status is indicated by front-panel LEDs designated RDY (Ready) and ERR (Error). The RDY LED displays operational readiness, drive inhibition, running status, active warnings, and active fault conditions using green, yellow, and red color patterns. The ERR LED isolates system error states, blinking red during active trip conditions and remaining solid red in the event of hardware or internal memory errors.
Extended diagnostic procedures can be carried out using the keypad display, parameter inspection, or software trace utilities. Parameter P200.00 displays current active fault codes, while parameter P205.00 retains a historical fault log. Real-time oscilloscopes and signal trace logs can be reviewed by connecting EASY Starter via Micro-USB or using the Lenze Smart Keypad App over an optional WLAN connection.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| RDY (Ready LED) | Green / Red / Yellow - Blinking / Solid / Off | Off: Power off; Blinking Green: Drive ready / inhibited; Solid Green: Operating / enabled; Blinking Red: Fault active; Blinking Yellow: Warning active |
| ERR (Error LED) | Red - Blinking / Solid / Off | Off: No error; Blinking Red: Trouble/Fault detected (tripped); Solid Red: Internal hardware or memory error requiring service |
Replacement and Spare Part Considerations
When replacing a failed unit, verify that the replacement match matches part number I55AE155F1AV10000S to ensure identical electrical ratings (0.55 kW / 0.75 hp, 3-phase 320–528 V AC) and integrated hardware features such as the SIL 3 / PL e STO safety module, dynamic brake chopper, and internal EMC filter.
Downtime during physical drive exchange is minimized by transferring the original EPM memory card into the replacement inverter. This operation immediately transfers all parameter sets, motor parameters, and fieldbus node configurations without requiring software tools or line power. Any optional hardware expansion modules, such as fieldbus option cards or the WLAN communication module, must be moved from the old drive to the spare unit before commissioning.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| 0x1000 | Software Error | Internal firmware/software failure detected. | Firmware corruption or internal system exception. | Perform mains reset. If fault recurs, re-flash firmware or replace unit (internal hardware failure). |
| 0x2220 | Motor Phase Failure | Missing phase on motor connection terminals (U, V, W). | Motor cable disconnected, motor winding open circuit, or contactor open. | Check motor wiring, terminal tightness, motor contactor, and motor stator resistance. |
| 0x2310 | Overcurrent (Peak Current) | Instantaneous peak output current limit exceeded. | Short circuit at output, ground fault, acceleration time too short, motor improperly parameterized, motor block. | Check motor and wiring for short circuit / ground fault. Increase acceleration time. Check motor parameter identification. |
| 0x2320 | Transistor Overcurrent | IGBT power module current threshold exceeded. | Output phase short circuit or IGBT gate drive fault. | Disconnect motor cables and test drive output. If error persists without motor connected, internal power stage failure occurred (replace unit). |
| 0x2330 | Earth Fault | Ground leakage current detected on motor lines. | Insulation breakdown in motor or motor cable, excessive cable length. | Check insulation resistance of motor and cable with high-voltage megohmmeter. Observe max permitted shielded cable length. |
| 0x2382 | Motor Overload (I2t) | Calculated motor thermal load limit exceeded. | Continuous mechanical overload or low speed operation at high continuous load without forced cooling. | Reduce motor mechanical load, verify thermal motor protection settings, add external cooling fan. |
| 0x3210 | DC Bus Overvoltage | DC bus voltage exceeded safe maximum threshold. | Excessive regenerative energy during deceleration, deceleration time too short, braking resistor missing or defective. | Increase deceleration ramp time, enable DC bus voltage controller (Vdc max), or connect external braking resistor. |
| 0x3220 | DC Bus Undervoltage | DC bus voltage fell below minimum operational threshold. | Mains supply voltage lost or too low, main supply phase missing, main contactor opened. | Check mains voltage supply, fuses, line contactors, and input power wiring. |
| 0x3230 | Mains Phase Failure | Asymmetry or loss of one mains phase detected on input terminals. | Blown input fuse, loose line wire connection, or unbalanced utility grid. | Check line supply voltages across L1, L2, L3 and verify input fuses. |
| 0x4210 | Heatsink Overtemperature | Heatsink temperature exceeds maximum permitted limit. | Inadequate cabinet ventilation, clogged heatsink cooling fins, internal fan failure, ambient temperature too high. | Clean cooling fins, check fan operation, lower cabinet ambient temperature, lower carrier/switching frequency. |
| 0x4310 | Internal Drive Overtemperature | Control board / internal temperature sensor exceeded safe limit. | Cabinet ambient temperature inside inverter housing excessive. | Improve enclosure cooling and airflow. |
| 0x6100 | Internal Communication Failure | Communication lost between internal power board and control unit. | Internal hardware fault or loose internal connector ribbon. | Perform mains power cycle. If fault persists, replace inverter unit (internal board failure). |
| 0x6280 | Memory Module Error | EPM memory card access/read error or corrupt data. | Memory module missing, unformatted, damaged, or removed during write operation. | Re-insert memory module securely, reformat/restore parameter set via EASY Starter, or replace EPM card. |
| 0x7121 | Motor Stall / Speed Deviation Error | Motor speed feedback deviates from setpoint or motor stalled under heavy load. | Mechanical stall, encoder connection failure, incorrect encoder parameters. | Check motor mechanical load, brake release, encoder cable connection and configuration. |
| 0x7180 | Motor Overtemperature (PTC/T1-T2) | Motor thermistor / PTC sensor input tripped. | Motor overheating due to overload or inadequate motor cooling fan. | Allow motor to cool down, check motor load and forced ventilation fan. |
| 0x7300 | Encoder Fault / Feedback Lost | Signal loss or broken wire detected on HTL/TTL encoder input. | Broken encoder cable, wiring error, or defective encoder sensor. | Check encoder wiring, shielding, and supply voltage. |
Frequently Asked Questions
How are parameters transferred to a new Lenze I55AE155F1AV10000S replacement drive?
Parameters can be transferred by swapping the removable EPM memory card from the original unit directly into the replacement inverter. This duplicates all parameter settings and motor configurations without needing line power or PC software. Alternatively, parameters can be backed up and reloaded using Lenze EASY Starter software via Micro-USB.
What functional safety capabilities are integrated into this drive model?
The I55AE155F1AV10000S includes hardware-based Safe Torque Off (STO) certified to SIL 3 according to EN 62061 and Performance Level e (PL e) according to EN ISO 13849-1.
Which communication networks are supported by this inverter?
The drive supports integration with PROFINET, EtherCAT, EtherNet/IP, Modbus RTU, CANopen, PROFIBUS DP, and IO-Link networks using option cards attached to the inverter interface slot.
What do the RDY and ERR LEDs indicate during operation?
The RDY LED indicates operating states: blinking green for ready/inhibited, solid green for active operation, blinking yellow for active warnings, and blinking red for active faults. The ERR LED blinks red during trip faults and remains solid red if an internal hardware or memory error occurs.
What action should be taken if fault code 0x2320 (Transistor Overcurrent) appears?
Disconnect the motor power cables from terminals U, V, and W and test the drive output. If error 0x2320 continues to trip with no motor connected, an internal IGBT power stage failure has occurred and the drive unit requires repair or replacement.
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