Lenze EVF9328-EHV100 Retrofit-Compatible AC Drive for Legacy Systems

Lenze EVF9328-EHV100 Retrofit-Compatible AC Drive for Legacy Systems

The Lenze EVF9328-EHV100 is a ruggedized variable frequency drive from Lenze’s EVF9300 series, engineered for demanding industrial environments where temperature extremes, vibration, and contamination are constant operational challenges. As legacy automation systems age and original equipment manufacturers discontinue support for older drive platforms, the EVF9328-EHV100 has become a critical retrofit solution for engineers tasked with modernizing existing production lines without full system replacement. Whether you are replacing a failed unit on a legacy conveyor system, upgrading a control cabinet in a chemical processing plant, or migrating from an older Lenze 8200 vector series drive, the EVF9328-EHV100 provides a reliable, compatible upgrade path that minimizes engineering rework and commissioning time.

Sourced directly from authorized distribution channels and subjected to pre-shipment functional testing, every EVF9328-EHV100 unit supplied by NINERMAS is backed by a 12-month warranty and verified against original Lenze factory specifications. Our inventory is maintained to support urgent replacement demands, with same-week dispatch available for in-stock units.

Upgrade Compatibility Table

Retrofit Planning for Existing Automation Systems

Successful integration of the EVF9328-EHV100 into an existing automation system requires careful pre-engineering assessment across several dimensions. Before initiating a drive replacement, maintenance engineers should confirm the power supply capacity of the control cabinet — the EVF9328-EHV100 draws from the main AC bus, and any upstream circuit breaker or fuse sizing must be validated against the drive’s input current rating. Cabinet thermal management is equally important: the EHV variant’s extended operating temperature range reduces derating risk, but adequate clearance above and below the unit must still be maintained per Lenze installation guidelines.

Terminal wiring adaptation is one of the most time-consuming aspects of a drive retrofit. Engineers migrating from older Lenze 8200 vector drives or third-party inverters will need to remap analog reference inputs (0–10V or 4–20mA), digital enable signals, relay outputs, and motor thermistor connections to the EVF9300 terminal block layout. In many cases, a Lenze E82ZBB terminal expansion module or equivalent I/O extension can simplify this remapping without rewiring the entire cabinet. For systems using a Lenze 9300 servo inverter in adjacent axes, the EVF9328-EHV100 can share the same DC bus link, reducing overall energy consumption and simplifying cabinet layout.

Communication protocol migration is another key consideration. Many legacy lines rely on PROFIBUS DP for drive control, while newer installations may use CANopen or EtherCAT. The EVF9328-EHV100 supports fieldbus communication via plug-in option modules — the E82ZAFP PROFIBUS adapter and E82ZAFC CANopen module are the most commonly specified accessories in retrofit projects. If the existing HMI — such as a Lenze XT HMI panel or a third-party SCADA terminal — communicates drive status via fieldbus, the option module selection must match the existing network topology to avoid reprogramming the PLC communication blocks.

For systems controlled by a Lenze L-force controller or a third-party PLC such as a Siemens S7-300, the drive’s parameter set should be exported from the old unit using the Lenze Engineer software or a Lenze KP500 keypad before decommissioning. This parameter backup preserves acceleration ramps, frequency limits, motor data, and PID configurations, allowing the replacement EVF9328-EHV100 to be pre-configured on the bench and loaded via the keypad or PC tool before installation — dramatically reducing on-site commissioning time. Where a Lenze EPM memory module was used in the original drive, parameter transfer can be completed in minutes without a laptop connection.

Physical installation space must also be confirmed. The EVF9328-EHV100’s dimensions should be compared against the existing cutout or mounting footprint in the control cabinet. In retrofit scenarios where the original drive was a different frame size, a Lenze mounting adapter plate or cabinet modification may be required. Ensure that the motor cable routing, EMC cable glands, and shielding connections are maintained to prevent conducted emissions from affecting adjacent signal isolators, I/O modules, or communication cables within the same enclosure.

Downtime Control During System Migration

Minimizing production downtime during a drive replacement is the primary concern for most plant engineers. With the EVF9328-EHV100, a structured hot-swap preparation process can reduce total outage time to under four hours for a single-axis replacement. The recommended approach begins with a full parameter export from the existing drive while the machine is still operational, followed by bench configuration and motor data entry on the replacement unit. Pre-wiring a terminal adapter harness in advance — based on the existing cabinet wiring diagram — allows the physical swap to proceed without referencing documentation on the factory floor.

Where the original control program references drive parameters via fieldbus (for example, speed setpoint scaling or torque limit values written by the PLC), these register addresses should be verified against the EVF9300 parameter list before the cutover. Discrepancies in parameter mapping between the old and new drive firmware versions can cause unexpected behavior on first power-up. A controlled test run at reduced speed with the motor uncoupled from the load is strongly recommended before returning the axis to full production speed.

For multi-drive systems where the EVF9328-EHV100 operates alongside other inverters on a shared DC bus or synchronized via a master-follower configuration, the replacement sequence must account for bus pre-charge timing and inter-drive communication handshaking. Maintaining the original program logic in the PLC without modification during the drive swap preserves control continuity and avoids the risk of introducing new faults into the automation sequence. Post-commissioning, a 24-hour monitored run at production speed is recommended before closing the maintenance work order.

Retrofit Support FAQ

Q: Is the EVF9328-EHV100 a direct replacement for the standard EVF9328 or older EVF9300 series drives?
A: The EVF9328-EHV100 is the ruggedized EHV variant of the EVF9328 and is functionally compatible with standard EVF9300 series applications. It can replace standard EVF9328 units directly in most installations. When replacing older EVF9300 variants or 8200 vector series drives, terminal wiring and parameter remapping will be required. NINERMAS technical support can assist with cross-reference confirmation prior to order.

Q: What commissioning steps are required after installation?
A: After physical installation and wiring, the drive must be configured with motor nameplate data (rated voltage, current, frequency, speed, and power factor), acceleration/deceleration ramps, and any application-specific parameters. If a parameter backup was taken from the original unit, this can be loaded via the Lenze KP500 keypad or Lenze Engineer software. A no-load test run followed by a loaded test at reduced speed is recommended before full production restart.

Q: Does NINERMAS perform pre-shipment testing on the EVF9328-EHV100?
A: Yes. Every unit undergoes functional testing prior to dispatch, including power-up verification, control terminal continuity checks, and communication interface validation where applicable. A test report is available upon request. All units are shipped with original or equivalent protective packaging to prevent transit damage.

Q: What warranty and after-sales support does NINERMAS provide?
A: All EVF9328-EHV100 units supplied by NINERMAS are covered by a 12-month warranty from the date of shipment. In the event of a warranty claim, NINERMAS will arrange replacement or repair at no additional cost. Our technical team is available to assist with compatibility queries, wiring guidance, and commissioning support throughout the warranty period. Contact us at sale@ninermas.com or +0086 187 5021 5667.