Lenze 33.8101-A 8100 Series Frequency Inverter 0.37kW 230V
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Product Information
The Lenze 33.8101-A is a compact frequency inverter from the 8100 Series designed for variable speed control of standard three-phase AC asynchronous motors up to 0.37 kW (0.5 HP). Operating on a single-phase AC supply between 190 V AC and 260 V AC, this drive converts single-phase input power into a three-phase 230 V AC output capable of delivering a continuous rated current of 2.4 A. Motor performance is managed using selectable V/f characteristic curves, allowing operators to configure linear or quadratic profiles to match constant or variable torque loads across an adjustable output frequency range of 0 to 480 Hz at an 8 kHz switching frequency. Physical connection to external field devices and mains supply is established through integrated screw terminal strips handling power distribution, control inputs, setpoints, and relay signaling.
Commissioning a replacement 33.8101-A unit requires transferring configuration parameters from the existing drive to maintain proper motor protection and operational logic. The inverter stores operational parameters in internal non-volatile EEPROM memory, which retains settings without requiring external backup power. Parameter backup and cloning can be executed directly using a pluggable front operating module keypad or remotely over serial communications using Lenze Global Drive Control software combined with an optional LECOM RS-232/RS-485 module. When a failed unit retains readable EEPROM data, ABC Industrial Parts can assist with parameter extraction and pre-loading to ensure a direct drop-in setup before installation.
The front panel features dual LED status indicators for real-time operating feedback and fault identification. The green LED indicates mains supply health, drive readiness, and controller inhibit status, while the red LED alerts technicians to trip lockouts caused by conditions such as undervoltage, overvoltage, overcurrent, or thermal overload. Initial field troubleshooting should start by verifying mains supply stability, checking motor lead integrity, and clearing cooling fins of debris. If persistent faults such as an EEPROM memory failure or an unresolved ground fault occur even with motor cables disconnected, internal hardware damage is indicated, and replacing the drive with a tested exchange unit from ABC Industrial Parts provides the fastest route to restoring production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 33.8101-A |
| Model / Type | 33.8101-A |
| Product Family | 8100 Series |
| Component Type | Frequency Inverter |
| Rated Power (kW) | 0.37 kW |
| Rated Power (HP) | 0.5 HP |
| Supply Voltage Range | 190 – 260 V AC |
| Input Phases | 1-Phase |
| Output Voltage | 230 V AC |
| Output Phases | 3-Phase |
| Continuous Output Current | 2.4 A |
| Output Frequency Range | 0 – 480 Hz |
| Switching Frequency | 8 kHz |
| Control Method | V/f Characteristic Control (Linear / Quadratic) |
| Communication Interface Option | LECOM (RS-232 / RS-485) |
Programming and Configuration
Parameter management on the Lenze 33.8101-A is centered around non-volatile internal EEPROM storage. This memory retains all motor limits, acceleration times, and input configurations permanently without relying on internal batteries. When setting up a spare unit, parameters can be entered manually using the pluggable 8100 Series keypad operating module or transferred electronically from a saved project file.
For automated or batch configuration, the drive supports connection to Lenze Global Drive Control (GDC) software via an optional pluggable LECOM RS-232 or RS-485 communication module (part number 33.8100 LECOM). Using GDC software, technicians can back up parameter sets, alter V/f curves, adjust acceleration and deceleration ramps, and re-flash complete drive setups quickly during machine maintenance.
Communication and System Integration
System connectivity on the 33.8101-A frequency inverter is established through integrated front screw terminals and an optional serial communication expansion interface. The standard terminal strips handle discrete control signals, accepting digital start/stop inputs, analog speed setpoints, and providing programmable relay contact outputs for hardware fault reporting back to a main PLC.
When network integration or supervisory computer control is required, the drive accepts a pluggable 33.8100 LECOM module supporting RS-232 or RS-485 bus topologies. This optional interface enables remote setpoint transmission, drive status readbacks, and direct parameter editing over standard LECOM protocol commands.
Diagnostics and Status Indication
The Lenze 33.8101-A provides quick visual diagnostics via two color-coded status LEDs located on the front panel. These LEDs indicate operational states, standby conditions, parameter modes, and active fault lockouts. Detailed fault diagnostic codes are displayed on the pluggable operating module keypad screen or can be monitored remotely through Lenze Global Drive Control software when equipped with a LECOM module.
In addition to visual indicators, the inverter features a configurable fault relay output that alters contact states upon detecting critical hardware, thermal, or electrical trips. This allows external control systems to immediately isolate the drive or trigger machine safety routines when a trip occurs.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Green LED (Ready/Operation) | Green - Solid / Blinking | Mains power applied and inverter ready or running. Blinking indicates controller inhibit (Inhibit/Sperre) or parameter mode. |
| Red LED (Fault/Trip) | Red - Solid | Fault condition detected; trip active. Indicates failure state or trip lockout requiring fault clearance/reset. |
Replacement and Spare Part Considerations
Replacing a faulty drive with an exact Lenze 33.8101-A matching unit eliminates the need for cabinet mounting modifications, rewiring control schematics, or reprogramming higher-level PLC code. Because the physical dimensions and terminal layouts are identical, mechanical drop-in installation is straightforward.
Before placing a replacement unit into operation, verify that all parameters match the original application setup. Transfer the parameter set using the pluggable operating keypad or upload the project via Lenze Global Drive Control software. Ensure that motor nominal voltage, rated current, and V/f characteristic curves are matched to the connected motor to prevent premature thermal tripping or equipment damage.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| LU | Undervoltage | DC-bus voltage dropped below lower limit. | Mains supply voltage too low, mains phase missing, line failure. | Check mains voltage and supply wiring. |
| OU | Overvoltage | DC-bus voltage exceeded upper threshold. | Excessive regenerative energy during motor deceleration; deceleration time set too short. | Increase deceleration time or install braking resistor / brake module. |
| OC1 | Overcurrent during acceleration | Instantaneous output current threshold exceeded during motor acceleration. | Acceleration time too short, motor rated power too high, short circuit or earth fault on motor cable. | Increase acceleration time, check motor cable for short circuits, verify motor parameters. |
| OC2 | Overcurrent during deceleration | Instantaneous output current threshold exceeded during motor deceleration. | Deceleration time too short, rapid braking without braking resistor. | Increase deceleration time, check motor wiring. |
| OC5 | Earth fault / Ground fault | Earth fault detected on motor phase outputs. | Motor cable earth fault, insulation damage in motor windings, excessive cable length. | Check motor and motor leads for ground faults and insulation damage. Internal hardware failure if error persists after disconnecting motor wires. |
| OH | Inverter Overtemperature | Heatsink temperature exceeded permissible maximum limit. | Insufficient cooling airflow, ambient temperature too high, fan blocked or defective, dirty cooling fins. | Clean heatsink, check cabinet ventilation and ambient temperature. |
| OH4 | Motor Overtemperature | Motor thermistor or thermal contact triggered. | Motor overload, inadequate motor cooling at low operational speeds. | Allow motor to cool, check motor load and forced-cooling fan if equipped. |
| OL1 | Inverter Overload (Ixt) | Continuous overload threshold of frequency inverter exceeded. | Inverter operating above rated current for prolonged period. | Reduce motor load or upgrade inverter power class. |
| OL2 | Motor Overload (I2t) | Motor thermal overload monitoring (I2t calculation) tripped. | Continuous motor operation above rated nominal motor current. | Check motor mechanical load, duty cycle, and motor parameter setup. |
| EE | EEPROM Fault | Internal parameter memory corruption or read/write checksum failure. | Strong electromagnetic interference during save operation or corrupted internal EEPROM chip. | Reload factory default parameters and reconfigure. Internal hardware failure — return unit for repair if error cannot be cleared. |
| CE0 | Communication Fault (LECOM) | Communication interruption or bus timeout via LECOM interface. | Broken communication cable, incorrect baud rate, master controller offline. | Check RS-232/RS-485 connection cables, baud rate settings, and host system. |
Frequently Asked Questions
What power input does the Lenze 33.8101-A frequency inverter require?
The Lenze 33.8101-A operates on a single-phase AC input voltage range of 190 V AC to 260 V AC and produces a three-phase 230 V AC output for motors up to 0.37 kW (0.5 HP).
How do I transfer parameters to a replacement 33.8101-A inverter?
Parameters can be transferred using the pluggable 8100 Series keypad operating module to clone settings, or electronically using Lenze Global Drive Control (GDC) software connected via an optional LECOM RS-232/RS-485 module.
What does a blinking green status LED indicate on the front panel?
A blinking green LED indicates that mains power is applied but the drive is in controller inhibit state (Inhibit/Sperre) or parameter mode.
What should I do if the drive displays an EE fault code?
An EE code signifies an EEPROM memory failure. Attempt to reload factory default parameters and reconfigure the unit. If the error persists, the internal memory chip has suffered a hardware failure requiring repair or unit replacement.
Can the 33.8101-A communicate over serial networks?
Yes, serial communication over RS-232 or RS-485 using LECOM protocol is supported when an optional 33.8100 LECOM communication module is plugged into the front interface.
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