Lenze 33.8103-A 8100 3/7138/1690 Frequency Inverter 1.5kW
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Product Information
The Lenze 33.8103-A (model 8100 3/7138/1690) is a 1.5 kW frequency inverter from the Lenze 8100 family designed for precise speed control of standard 3-phase AC induction motors. Operating on a nominal 400 V AC supply within a wide operating range of 342 V AC to 456 V AC, this drive delivers a variable 3-phase output from 0 V to 400 V AC with an output frequency up to 120 Hz. Utilizing adaptable V/f control with linear and quadratic characteristic curves, the unit provides reliable dynamic performance for constant torque applications such as conveyors as well as variable torque loads like industrial fans and centrifugal pumps across material handling, packaging, and food and beverage processes.
Commissioning a replacement 33.8103-A unit is straightforward because parameterization relies entirely on physical hardware controls rather than complex setup software or PC interface cables. Integrated potentiometers and DIP switches allow technicians to set acceleration and deceleration ramp times, maximum frequency limits, V/f voltage boost, and operating modes directly on the drive. When replacing a non-functional unit, copying the physical dial positions and switch toggles from the original drive configures the replacement spare to match existing machine dynamics. ABC Industrial Parts can supply tested replacement drives to help restore control cabinets to operation without needing structural panel alterations.
System status and drive protection are managed through front-panel status LEDs and an integrated fault contact relay output. Three diagnostic LEDs display key operational states: a green LED indicates active mains voltage and readiness, a yellow LED signals pulse inhibit status, and a red LED alerts to trip faults including overcurrent, overvoltage, undervoltage, or heatsink overtemperature. During fault events, the integrated relay contact trips to integrate directly into machine alarm or emergency stop circuits. Initial troubleshooting involves verifying input mains power, checking run enabling signals, and inspecting ambient cooling conditions; if internal board components fail, sourcing a replacement unit from ABC Industrial Parts offers a fast path back to full production.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 33.8103-A |
| Model / Type | 8100 3/7138/1690 |
| Product Family | 8100 |
| Component Type | Frequency Inverter |
| Rated Power | 1.5 kW |
| Supply Voltage | 400 V AC |
| Supply Voltage Range | 342 - 456 V AC |
| Rated Input Current | 4.5 A |
| Continuous Output Current | 3.9 A |
| Output Voltage | 0 - 400 V AC |
| Maximum Output Frequency | 120 Hz |
| Control Method | V/f Control (Linear / Quadratic) |
Programming and Configuration
The Lenze 33.8103-A frequency inverter features physical parameterization designed to simplify field commissioning. Operational variables are configured directly on the device using onboard potentiometers and DIP switches, eliminating the need for external programming software, specialized software licenses, or dedicated communication cables.
Technicians can manually adjust key parameters including acceleration and deceleration ramp times, V/f boost voltage, maximum output frequency up to 120 Hz, and operating mode selections. Setting up a replacement unit requires duplicating the exact positions of the physical potentiometers and DIP switch array from the unit being replaced.
Diagnostics and Status Indication
Real-time monitoring on the Lenze 33.8103-A is provided through three color-coded diagnostic LEDs located on the drive faceplate. These indicators give instant feedback regarding power availability, controller inhibit state, and trip fault conditions. In addition, an integrated fault contact relay output changes state upon an alarm to automatically trigger external warning systems or open safety interlocks.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Betrieb / Operation | Green - Solid | Mains supply active and inverter ready for operation |
| Impulssperre / Controller Inhibit | Yellow - Solid | Pulse inhibit active / drive controller inhibited |
| Störung / Fault | Red - Solid/Flashing | Trip fault active (overcurrent, overvoltage, undervoltage, or heatsink overtemperature) |
Replacement and Spare Part Considerations
The 33.8103-A is engineered as a direct drop-in replacement for legacy Lenze 8100 series drive installations. Its physical enclosure matches standard Lenze 8100 mounting frames, allowing quick mechanical installation without altering mounting plates or cabinet layouts.
Replacing a failed unit with an identical 33.8103-A spare preserves original control wiring and eliminates panel redesign. While Lenze recommends the i510 or i550 Cabinet inverter series for modern system overhauls, installing a direct 33.8103-A replacement avoids the time and cost associated with re-engineering wiring schemes and control logic.
Frequently Asked Questions
How are parameters configured on the Lenze 33.8103-A drive?
Parameter configuration is handled entirely through physical hardware using integrated potentiometers and DIP switches on the drive faceplate. No programming software, software licenses, or cables are required.
What do the diagnostic LEDs on the front panel indicate?
The green LED (Betrieb / Operation) indicates active mains power and operational readiness, the yellow LED (Impulssperre / Controller Inhibit) indicates an active pulse inhibit, and the red LED (Störung / Fault) indicates trip faults such as overcurrent, overvoltage, undervoltage, or heatsink overtemperature.
What motor types and power ratings work with the 33.8103-A?
The Lenze 33.8103-A is designed to control 3-phase 380-415 V AC induction motors rated up to 1.5 kW with continuous output currents up to 3.9 A.
Is software required to replace a damaged 33.8103-A unit?
No software is required. Because settings are stored via mechanical switches and potentiometers, matching the physical settings of the original drive onto the replacement unit completes parameter configuration.
How does the drive report faults to an external PLC or alarm circuit?
The inverter includes an integrated fault contact relay output that trips open or closed when a protective fault occurs, allowing direct connection to upstream machine alarm circuits.
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Industrial plants prefer to keep running invariably, no matter what. Therefore, it is essential that you can rely on high-quality products and/or sustainable repairs. With our warranty conditions, you can count on certainty, whether you choose new, used or repaired products.
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
If you are working with specific hardware or firmware versions that are no longer available from the manufacturer, ABC Industrial Parts is your partner. When making your enquiry, clearly state which versions you need, we will then look at the possibilities of supplying those versions, so that your installations continue to function optimally.
Disclaimer:
We are not an authorised distributor of Lenze.
Product photos are for illustration purposes only and may differ from the actual product delivered.
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