Lenze 16074128 I55AE175B10V10004S – i550 Cabinet Frequency Inverter 0.75 kW
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Product Information
The Lenze 16074128 (model designation I55AE175B10V10004S) is a 0.75 kW frequency inverter belonging to the Lenze i500 product family and i550 cabinet drive series. Designed for control cabinet installation with an IP20 protection rating, this compact AC drive operates from a 3-phase supply network rated at 400 V to 480 V AC, with a permitted operating range of 320 V to 528 V AC. It provides precise variable-frequency speed control for three-phase AC motors across an output frequency range of 0 Hz to 599 Hz, supporting both standard V/f characteristic curve regulation and Sensorless Vector Control (SLVC) with a default switching frequency of 8 kHz.
Connecting and integrating the drive into existing machine architectures is handled via onboard CANopen and Modbus RTU (RS-485) fieldbus interfaces, combined with a standard I/O configuration featuring 5 digital inputs, 1 digital transistor output, 2 analog inputs (0–10 V or 4–20 mA), and 1 analog output. When replacing a unit in an active production line, direct drop-in operation requires parameter alignment, as motor control profile settings and network addresses must match the host machine. Parameter transfer and drive commissioning can be executed using Lenze EASY Starter engineering software connected through a plug-in USB diagnostic module (i5MADU0000000S), a keypad module (i5MADK0000000S), a WLAN module (i5MADW0000000S), or non-volatile memory modules. ABC Industrial Parts can assist maintenance teams with parameter recovery and spare drive configuration to ensure quick replacement.
Diagnostic monitoring is available directly on the front panel via multi-color status LEDs for drive readiness (RDY) and fieldbus state (CAN), as well as an internal fault history log stored in memory. First-line field checks for external drive faults include verifying three-phase AC line voltages, testing motor insulation resistance if overcurrent (0x2211) or earth fault (0x2310) events occur, and inspecting deceleration ramp settings or braking resistors during DC-bus overvoltage conditions (0x3210). When internal system errors (0x0010) or heatsink sensor faults (0x1110) are signaled, the internal hardware is not field-serviceable. In these cases, installing a replacement unit or sourcing a tested exchange drive from ABC Industrial Parts is the fastest path back to operation.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 16074128 |
| Model / Type Designation | I55AE175B10V10004S |
| Component Type | Frequency Inverter |
| Product Family | i500 |
| Drive Series | i550 Cabinet |
| Rated Power | 0.75 kW |
| Supply Voltage Range | 3 AC 400 V / 480 V (320 V - 528 V AC) |
| Rated Output Current | 2.4 A (400 V) / 2.1 A (480 V) |
| Output Frequency Range | 0 - 599 Hz |
| Default Switching Frequency | 8 kHz |
| Control Modes | V/f control, Sensorless Vector Control (SLVC) |
| Digital I/O | 5 Digital Inputs, 1 Digital Output |
| Analog I/O | 2 Analog Inputs, 1 Analog Output |
| Communication Interfaces | CANopen, Modbus RTU (RS-485) |
| Protection Rating | IP20 |
Programming and Configuration
Commissioning and parameter setup for the Lenze 16074128 inverter are performed through Lenze EASY Starter engineering software or plug-in hardware modules. The drive features a dedicated modular slot on the front interface that accepts optional diagnostic tools, including the i5MADK0000000S Keypad module, the i5MADU0000000S USB diagnostic module, or the i5MADW0000000S WLAN module for mobile diagnostics. These tools enable technicians to modify motor characteristics, ramp times, thermal protection parameters, and control loop configurations.
Fast parameter duplication and offline configuration updates are facilitated by non-volatile memory within the control module architecture. Parameter sets can be backed up directly to PC storage via EASY Starter or saved onto removable memory structures. When installing a replacement unit, saved parameter files can be downloaded directly to the new inverter, bypassing manual parameter entry and preventing potential commissioning errors.
Communication and System Integration
The Lenze I55AE175B10V10004S frequency inverter features integrated CANopen and Modbus RTU (RS-485) network protocols directly on board via pluggable terminal strip connectors. This allows out-of-the-box fieldbus connection to host programmable logic controllers (PLCs) or plant SCADA systems without requiring additional communication option cards.
Local control wiring integrates with a standard I/O framework that includes 5 digital inputs, 1 digital transistor output, 2 analog inputs capable of processing standard 0–10 V voltage or 4–20 mA current signals, and 1 analog output. This flexible interface supports local start/stop control, external velocity setpoints, speed feedback indication, and fault relay signaling.
Diagnostics and Status Indication
The Lenze 16074128 drive includes dual multi-color LEDs on its front panel labeled RDY (Ready) and CAN (CANopen Status) for instant visual diagnostic state assessment. These LEDs communicate power status, operational readiness, fieldbus communication states, active warnings, and critical fault conditions.
Comprehensive diagnostic parameters and a historical error buffer can be accessed remotely over the fieldbus network, locally via the plug-in keypad module, or through EASY Starter PC software when connected via USB or WLAN modules.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| RDY | Green/Red - Off / Blinking / Solid | Off = No supply power; Green blinking slowly = Ready / Inverter inhibited; Green solid = Inverter enabled / running; Red blinking = Warning active; Red solid = Fault / Error state active |
| CAN | Green/Red - Off / Blinking / Solid | Off = Bus off or no network; Green blinking = Pre-operational state; Green solid = Operational state; Red blinking = Bus warning / communication error; Red solid = Bus off state |
Replacement and Spare Part Considerations
When replacing an installed Lenze 16074128 drive, ensure that the incoming three-phase supply matches the required 400/480 V AC range and that the replacement unit shares the exact model designation I55AE175B10V10004S. Matching physical dimensions and the IP20 enclosure style guarantees direct physical fitment within side-by-side cabinet arrays.
A replacement drive will not run the machine application out of the box without parameter synchronization. Before removing the old unit, backup the parameter set using EASY Starter or a USB/WLAN module. If the original control board is unreadable due to severe failure, parameters must be reloaded from host PLC archives or machine manufacturer backup files before putting the spare into service.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| 0x0010 | System error | Internal hardware fault or system error detected in the control unit. | Internal memory error or microprocessor hardware malfunction. | Cycle power. If fault persists, the internal hardware is damaged; replace unit or return for repair. |
| 0x1110 | Heat sink temperature sensor error | Fault detected in internal heatsink temperature sensor circuit. | Internal temperature sensor failure or disconnected sensor wiring. | Internal hardware failure; replace unit or contact Lenze service. |
| 0x2211 | Overcurrent | Instantaneous peak current threshold exceeded at inverter output. | Short circuit or ground fault on motor cable, incorrect motor parameter setup, excessive acceleration rate, or motor overload. | Check motor and wiring for short circuits or ground faults. Verify acceleration time and motor data settings. |
| 0x2221 | Motor current limit exceeded | Output current exceeds parameter-defined maximum current limit for longer than allowed. | Mechanical overload or jam on motor shaft. | Inspect driven load for mechanical blockage or binding. Check current limit configuration. |
| 0x2310 | Earth fault | Ground fault / earth leakage detected on output phase U, V, or W. | Insulation breakdown in motor winding or motor cable to ground. | Test motor and cabling insulation with a megohmmeter. Replace damaged motor or cable. |
| 0x3210 | DC-bus overvoltage | DC bus voltage exceeded upper voltage limit threshold. | Excessive regenerative energy during motor deceleration, missing braking resistor, or high supply voltage. | Increase deceleration ramp time, install/check braking resistor, or check input AC voltage. |
| 0x3220 | DC-bus undervoltage | DC bus voltage fell below lower voltage limit threshold. | Mains supply voltage drop, input phase loss, or power supply interruption. | Verify input AC supply voltage and power distribution wiring. |
| 0x3310 | Mains phase failure | Loss of one or more incoming AC supply phases detected. | Blown input fuse, loose terminal connection, or unbalance in supply network. | Check AC line voltage across all three incoming phases and inspect input fuses and wiring. |
| 0x4210 | Motor overtemperature (I2t) | Calculated motor thermal load model threshold exceeded. | Continuous motor operation at low speed under heavy load without forced cooling. | Allow motor to cool, verify cooling fan operation, check motor current rating and I2t parameters. |
| 0x4310 | Heatsink overtemperature | Inverter heatsink temperature exceeds maximum allowable threshold. | Clogged heat sink fins, failed internal cooling fan, or insufficient cabinet ventilation. | Clean heatsink cooling fins, check internal fan operation, and ensure adequate cabinet ventilation. |
| 0x6100 | Internal communication fault | Inter-processor communication failure within the control unit. | Internal circuit corruption or electromagnetic interference. | Cycle power to unit. If fault persists, internal hardware error requires unit replacement. |
| 0x8130 | CANopen communication fault | Communication interruption or bus-off event on CANopen network. | Disconnected CANbus cable, missing bus termination resistor, baud rate mismatch, or master controller offline. | Inspect CAN wiring, bus termination resistors, network baud rate, and master PLC status. |
Frequently Asked Questions
What software is used to program the Lenze 16074128 frequency inverter?
The Lenze 16074128 inverter is programmed using Lenze EASY Starter engineering software. Connection to a PC is achieved by plugging an optional USB diagnostic module (i5MADU0000000S) or WLAN module (i5MADW0000000S) into the front interface slot.
Which communication protocols are integrated into model I55AE175B10V10004S?
Model I55AE175B10V10004S features onboard CANopen and Modbus RTU (RS-485) communication interfaces accessible directly on pluggable terminal strips.
What power rating and input supply voltage does the 16074128 inverter require?
The 16074128 drive has a rated power output of 0.75 kW (1.0 HP) and operates on a 3-phase AC supply voltage rated at 400 V to 480 V (acceptable range 320 V to 528 V AC).
Can I replace a failed 16074128 drive without transferring configuration parameters?
No. A replacement inverter requires motor data, control profiles, and communication parameter settings transferred from the original drive, EASY Starter backup files, or a diagnostic module before it can run in the application.
What does a solid red RDY LED mean on the inverter's front panel?
A solid red RDY LED indicates an active fault or error condition on the inverter. Detailed fault information can be retrieved by checking the error code via fieldbus, a plug-in keypad, or EASY Starter software.
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