Lenze 632-E Frequency Converter | 1.5 kW 230V EVF632-E Drive
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Product Information
The Lenze 632-E, cataloged under part number EVF632-E, is a 1.5 kW frequency converter belonging to the Lenze 630 series. Designed for precise variable speed control of standard three-phase AC asynchronous motors, this IP20-rated frequency inverter operates from a single-phase or three-phase 220–240 V AC supply with an allowable input range of 180 to 264 V AC. The drive generates an adjustable three-phase output voltage from 0 to 230 V AC at up to 7 A continuous output current, supporting an output frequency range of 0 to 480 Hz. It utilizes linear or quadratic V/f characteristic voltage-frequency control to efficiently drive constant or variable torque loads across material handling conveyors, industrial pumps, and ventilation fans.
To integrate seamlessly into machine control architectures, the 632-E unit includes four programmable digital inputs, one multi-range analog setpoint input supporting 0–10 V, 0–20 mA, or 4–20 mA signals, and one 0–10 V analog output. Commissioning a replacement unit requires transferring machine-specific parameter configurations from the original drive. Parameter setup is performed locally via a plug-in operator keypad module or remotely using Lenze Global Drive Control (GDC) PC software over an optional LECOM serial interface module (RS-232 or RS-485). Parameters are stored securely in non-volatile internal EEPROM memory to prevent data loss during power outages, and support from ABC Industrial Parts can assist in ensuring parameter data is accurately backed up and transferred before putting a replacement drive into service.
Front-panel LED indicators labeled ON, IMP, and TRIP provide immediate status indication, showing main power availability, pulse inhibit status, and active fault trip conditions. System troubleshooting is further supported by reading parameter code C0003 to inspect the internal fault memory or monitoring the state of the built-in fault relay output. Common operational faults like overcurrent (OC), overvoltage (OU), undervoltage (LU), or heatsink overtemperature (OH) can be resolved by checking motor insulation, adjusting acceleration and deceleration ramp times, or clearing cooling fins. However, unrecoverable hardware errors like internal memory failure (EE) require cycling power or replacing the unit, making a tested replacement drive from ABC Industrial Parts a direct route back to full operation.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 632-E (EVF632-E) |
| Product Family | 630 Series |
| Component Type | Frequency Inverter / Frequency Converter |
| Rated Power | 1.5 kW |
| Supply Voltage | 230 V AC |
| Supply Voltage Range | 180 - 264 V AC |
| Rated Output Current | 7 A |
| Output Voltage | 0 - 230 V AC |
| Output Frequency Range | 0 - 480 Hz |
| Control Method | Linear and Quadratic V/f Control |
| Digital Inputs | 4 Programmable |
| Analog Inputs | 1 (0-10 V / 0-20 mA / 4-20 mA) |
| Analog Outputs | 1 (0-10 V) |
| Protection Rating | IP20 |
Programming and Configuration
Configuring the Lenze 632-E involves setting operating parameters that define motor performance, control characteristics, and I/O assignments. Drive parameters are programmed using either a plug-in operator keypad module mounted on the front panel or remotely via Lenze Global Drive Control (GDC) PC software. Key setup steps include selecting between linear or quadratic V/f characteristic curves to match constant-torque applications like conveyors or variable-torque machinery like fans and pumps.
All configured operating parameters are saved directly to non-volatile EEPROM memory, preserving custom application settings through mains power cycles. Operational parameters such as acceleration ramp time (code C0012) and deceleration ramp time (code C0013) can be adjusted precisely to prevent nuisance overcurrent or overvoltage trip conditions during rapid speed changes.
Communication and System Integration
The Lenze 632-E frequency converter supports field communication through an optional LECOM serial interface module slot. This module provides RS-232 or RS-485 physical communication, allowing the inverter to interface directly with master PLCs, industrial host networks, or field laptops running engineering software.
Through the LECOM serial link, operators can issue remote speed references, monitor drive operating states, and adjust parameter tables using Global Drive Control (GDC) software. Signal integrity is monitored by internal diagnostics; serial line disruptions trigger fault code CE0, directing maintenance staff to inspect connection cables, shielding, bus termination resistors, station addressing, and baud rate configurations.
Diagnostics and Status Indication
The Lenze 632-E provides status assessment through three front-panel LED indicators labeled ON, IMP, and TRIP. These LEDs indicate supply voltage operational state, pulse inhibit conditions, and active fault trips.
In addition to visual LED indicators, full diagnostic evaluation is conducted by querying parameter code C0003 in the drive memory via the keypad module or GDC software. This fault memory records error codes for overcurrent, overvoltage, undervoltage, and thermal overload events, while a built-in fault relay changes state to alert external control systems of an active trip condition.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| ON | Green - Solid | Supply voltage is present and internal power supply is operational. |
| IMP | Yellow - Solid | Pulse inhibit active (inverter power output disabled / controller inhibited). |
| TRIP | Red - Solid/Flashing | Fault trip condition; power stage inhibited due to an active trip error. |
Replacement and Spare Part Considerations
The Lenze 632-E (EVF632-E) provides a direct drop-in replacement solution for legacy installations utilizing Lenze 630 series drives. Because physical dimensions and power ratings match the original drive hardware—delivering 1.5 kW output at 7 A continuous current from a 230 V AC supply—replacement installation does not require control cabinet modifications or mechanical rework.
Before putting a replacement unit into service, maintenance technicians must backup and load the original application parameter set onto the replacement inverter. Parameters can be copied using a plug-in operator keypad or transferred via Global Drive Control (GDC) software over a LECOM module. Matching V/f curves, ramp settings, and digital input logic is necessary to preserve identical motor protection thresholds and control sequence timing.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| OC | Overcurrent | Output current exceeds maximum allowed threshold due to short circuit, earth fault, or excessively fast acceleration. | Short circuit in motor winding or motor cable, earth fault, acceleration ramp set too short, motor mechanically jammed. | Inspect motor and wiring insulation; increase acceleration ramp time (C0012); check motor load. |
| OU | Overvoltage | DC bus voltage exceeds upper limit voltage. | Excessive regenerative energy returned from motor during braking, deceleration ramp set too fast, supply voltage too high. | Increase deceleration ramp time (C0013); connect external braking module/resistor if necessary; check supply mains voltage. |
| LU | Undervoltage | DC bus voltage fell below lower allowable voltage threshold. | Main power supply voltage too low, line phase failure, momentary mains power supply interruption. | Verify mains input voltage supply, check line fuses and power connections. |
| OH | Overtemperature | Drive heatsink temperature exceeded internal thermal limit. | Inadequate ventilation, fan failure, high ambient temperature, continuous thermal overload. | Clean heatsink cooling fins, ensure adequate clearance and cabinet airflow, reduce ambient enclosure temperature. |
| I²t | Motor Overload | Motor thermal overload monitoring triggered based on integrated current-time calculation. | Motor running under heavy load at low speed for prolonged duration without forced ventilation, mechanical overload. | Reduce motor load, install external forced ventilation fan on motor if operating continuously at low speeds. |
| CE0 | Communication Error | Communication failure detected on the serial communication module. | Damaged or disconnected serial cable, bus noise/interference, incorrect baud rate or station address settings. | Check wiring, cable shielding, bus termination resistors, and serial communication parameter setup. |
| EE | EEPROM Fault | Internal EEPROM read/write memory failure. | Internal hardware memory corruption or hardware component defect. | Internal hardware fault — perform power cycle; if error persists, return unit for service or replace the unit. |
Frequently Asked Questions
How do I transfer parameters to a replacement Lenze 632-E drive?
Parameters can be configured and transferred using a plug-in operator keypad module mounted on the front panel, or uploaded and saved electronically via Lenze Global Drive Control (GDC) PC software using an optional LECOM serial interface module (RS-232 or RS-485).
What power supply does the Lenze 632-E require?
The Lenze 632-E operates on a 220–240 V AC single-phase or three-phase input supply, with an allowable operating voltage range of 180 to 264 V AC.
What does a solid or flashing TRIP LED mean on the drive?
A solid or flashing TRIP LED indicates an active fault trip condition that inhibits the power stage output. The underlying fault code can be retrieved by checking code C0003 in the drive memory via the keypad or GDC software.
How do I resolve an OC (Overcurrent) fault code?
To resolve an OC fault, inspect the motor and cable insulation for short circuits or earth faults, ensure the motor is not mechanically jammed, and check that the acceleration ramp time (parameter C0012) is not set too short for the connected load.
Can the 632-E be used as a direct replacement for existing Lenze 630 series installations?
Yes, the 632-E serves as a direct drop-in replacement for 1.5 kW 230 V drives within the Lenze 630 series, fitting existing cabinet layouts without re-engineering panels or updating machine wiring schemes.
What action should be taken if the drive displays fault code EE?
Fault code EE indicates an internal EEPROM read/write memory failure. You should perform a mains power cycle. If the fault persists after cycling power, internal hardware corruption is present and the unit must be serviced or replaced.
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Data backup and recovery
Have you lost valuable parameters or data due to a malfunction while the manufacturer no longer provides support? At ABC Industrial Parts, we help you secure this data, both for common and specific products.
Specific firmware and hardware versions
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Disclaimer:
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