Lenze EVS9328-KHV531 9300 Series 22kW Servo Inverter
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Product Information
The Lenze EVS9328-KHV531 is a 22 kW servo inverter controller from the 9300 Servo series designed for high-dynamic multi-axis motion control, continuous web tensioning, and precision speed or torque regulation. Operating across a three-phase AC supply voltage from 320 V to 528 V AC, this IP20-rated unit provides a continuous rated output current of 47 A with a peak current capacity reaching 70.5 A for 60 seconds. Utilizing field-oriented vector control across an output frequency range of 0 to 600 Hz at an 8 kHz switching frequency, the drive provides precise regulation for both synchronous and asynchronous AC servo motors in demanding industrial environments.
For system integration and control, the drive features a built-in CANbus system bus supporting operational speeds up to 500 kbit/s via terminal X4, alongside an Automation Slot for optional fieldbus communication modules including PROFIBUS (EMF2133IB), INTERBUS (EMF2102IB), and CANopen (EMF2175IB). Signal connections include a standard resolver feedback port on terminal X7, dual Sub-D encoder interfaces on X8 for SinCos and TTL incremental encoders, four digital inputs, two digital outputs, two ±10V 12-bit analog inputs, and two ±10V analog outputs. Commissioning a replacement spare requires transferring configuration parameters using Lenze Global Drive Control (GDC) software version 4.x or higher or the optional Keypad XT Type 9371BB, which can clone any of the four onboard non-volatile parameter sets (PAR1 to PAR4). Expert technical support from ABC Industrial Parts can assist maintenance teams with parameter extraction and software setup when putting a replacement unit into service.
Real-time operating status and diagnostic alerts are indicated by three faceplate LEDs showing Ready (solid green), IMP pulse inhibit (solid yellow), and Trip fault (solid red). Precise error diagnostics are displayed via 4-character codes on the Keypad XT module or logged within the GDC software history, which records the last eight TRIP events with timestamps and operating hours. Internal power stage failures such as short circuits (OC1) or hardware component defects (H05) are not field-serviceable; in such cases, installing a tested replacement drive or contacting ABC Industrial Parts for industrial repair provides the fastest path back to full production.
Technical Specifications
| Rated Power | 22 kW |
| Supply Voltage Range | 320 - 528 V AC |
| Rated Output Current | 47 A |
| Peak Output Current | 70.5 A |
| Output Frequency Range | 0 - 600 Hz |
| Switching Frequency | 8 kHz |
| Control Method | Field-oriented vector control |
| Digital Inputs | 4 |
| Digital Outputs | 2 |
| Analog Inputs | 2 (±10V, 12-bit resolution) |
| Analog Outputs | 2 (±10V) |
| Ingress Protection Rating | IP20 |
Programming and Configuration
The Lenze EVS9328-KHV531 servo inverter utilizes Lenze Global Drive Control (GDC) software version 4.x or higher for parameterization, commissioning, and system analysis. Drive memory features non-volatile EEPROM storage capable of retaining four independent parameter sets (PAR1 through PAR4), allowing operators to switch between different machine operating profiles or axis configurations without re-downloading files.
Local parameter management and parameter transfer can be executed using the Keypad XT Type 9371BB operator module. The keypad allows full parameter cloning from a running drive into memory, enabling maintenance personnel to write complete parameter sets into a replacement inverter on the factory floor without connecting a programming laptop.
Communication and System Integration
Drive networking is anchored by an integrated CANbus system bus operating at speeds up to 500 kbit/s connected via terminal X4. This onboard system bus facilitates real-time inter-drive coordination, axis synchronization, and rapid data exchange across multi-drive configurations.
Modular fieldbus integration is accomplished through the dedicated Automation Slot (A-Slot), which accepts plug-in interface modules including the EMF2133IB for PROFIBUS-DP, the EMF2102IB for INTERBUS, and the EMF2175IB for CANopen. Closed-loop motor control relies on dedicated feedback ports, featuring terminal X7 for resolver connections and Sub-D terminal X8 supporting SinCos and TTL incremental encoder inputs and outputs.
Diagnostics and Status Indication
Visual system status is provided by three color LEDs located on the drive faceplate, which indicate control voltage availability, pulse inhibit states, and active drive trip conditions. A digital TRIP relay output contact (terminal X5/TRIP) is available to trigger external safety shutoffs or send fault signals directly to a master PLC.
Detailed troubleshooting is supported through 4-character error codes on the Keypad XT display module as well as diagnostic registers accessible over the CAN system bus. Global Drive Control (GDC) software maintains a detailed trip memory history logging the last eight fault events with corresponding timestamps and total operating hours.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Ready | Green - Solid | Drive ready for operation / Control power supply normal |
| IMP | Yellow - Solid | Pulse inhibit active / Inverter disabled (Terminal 28 open or safety open) |
| Trip / Fault | Red - Solid | Fault active / Drive tripped |
Replacement and Spare Part Considerations
When replacing a Lenze EVS9328-KHV531 drive, confirm that the substitute unit matches the 22 kW power rating and 47 A continuous output specification. Ensure that any communication module installed in the Automation Slot—such as a PROFIBUS EMF2133IB, INTERBUS EMF2102IB, or CANopen EMF2175IB card—is physically transferred from the damaged unit to the replacement inverter.
Because new or replacement drives do not contain machine-specific application settings upon installation, parameter set PAR1 must be copied from a backup file using GDC software version 4.x or transferred using a Keypad XT Type 9371BB module. Additionally, verify that the 120 Ohm bus terminating resistors are correctly set at terminal X4 if the unit is positioned at either end of a CAN system bus line.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| OC1 | Short Circuit | Instantaneous overcurrent in the output power stage | Short circuit in motor cable, phase-to-phase short, motor winding fault, or drive output transistor failure. | Check motor and motor cables for insulation breakdown or short circuits. If error persists with motor cable disconnected, internal power stage failure is present; replace drive or return for repair. |
| OC2 | Earth Fault | Ground fault / earth leakage current detected on output motor phase | Motor cable grounded, motor phase shorted to ground / housing, high ground capacitance. | Check motor leads and motor winding insulation against earth with a megohmmeter. Check for water/moisture in motor terminal box. |
| OC5 | I2t Overload | Drive overload / current continuous limit exceeded | Mechanical overload, rapid acceleration ramps, undersized motor/drive for load. | Check drive loading and mechanical system for binding. Increase acceleration time or decrease duty cycle. |
| OU | Overvoltage DC Bus | DC bus voltage exceeded upper limit (>770 V DC) | Regenerative energy during braking too high, braking resistor not connected, brake chopper defective, deceleration ramp too fast. | Extend deceleration time (decel ramp), install or check dynamic braking resistor, check mains input voltage level. |
| LU | Undervoltage DC Bus | DC bus voltage dropped below lower threshold (<430 V DC) | Mains supply failure, supply voltage too low, phase missing on mains line, line fuse blown. | Check mains voltage across all input phases (L1, L2, L3) and check input line fuses. |
| OH | Heatsink Overtemperature | Heatsink temperature exceeds maximum limit (>85 °C) | Insufficient cooling airflow, cabinet fan failure, clogged heat sink, excessive ambient temperature, drive overload. | Clean heat sink fins, check cooling fan operation, verify control cabinet ventilation and ambient temperature limits. |
| OH4 | Motor Overtemperature | Motor thermistor / PTC contact connected to T1/T2 triggered | Motor thermal overload, cooling fan on motor failed, heavy duty cycle, PTC wire broken. | Allow motor to cool down, inspect motor cooling fan, measure PTC resistance across terminals T1/T2. |
| OH7 | Drive Internal Overtemperature | Internal air / control board temperature inside drive too high | Cabinet ambient temperature too high, internal ventilation fan defective. | Improve cabinet cooling/air conditioning, check internal drive fans. |
| CE0 | Communication Error A-Slot | Fieldbus communication failure on Automation Slot module | Fieldbus network cable disconnected, master PLC stopped, incorrect node address/baud rate. | Check fieldbus cable connections, network master status, and configuration settings. |
| CE1 | System Bus Communication Error (CAN) | Communication failure on integrated CAN System Bus | CAN high/low bus wire interrupted, missing terminating resistor (120 Ohm), CAN node offline. | Check system bus wiring on X4 terminal, verify 120 Ohm bus termination at both ends. |
| EER | EEPROM Fault | Parameter data read/write error in non-volatile memory | EEPROM memory corruption or internal memory component hardware failure. | Internal hardware failure — restore parameters from GDC software or keypad. If error cannot be cleared, replace drive unit. |
| H05 | Internal Hardware Error | Internal power supply or control board hardware defect detected during power-up or operation | Internal circuit board failure or component degradation. | Internal hardware fault — unserviceable in field. Replace the drive unit or send for factory repair. |
| Sd2 | Resolver Feedback Error | Resolver signal open circuit, short circuit, or track envelope loss on X7 | Resolver cable damaged/unplugged, resolver stator/rotor defect, signal interference. | Check resolver feedback cable shielding and plug X7 connection. Measure resolver winding impedance. |
| Sd3 | Encoder Signal Error | SinCos / Incremental encoder track fault on X8 | Encoder cable loose or damaged, encoder supply voltage missing, encoder defective. | Check encoder cable and connector X8. Verify encoder power supply voltage and cable shielding. |
| LP1 | Mains Phase Loss | Phase supply failure on AC input mains (L1, L2, L3) | Blown input line fuse, phase missing, severe mains imbalance. | Check three-phase mains supply voltage at input terminals L1, L2, L3 and check input fuses. |
Frequently Asked Questions
What commissioning software is used with the Lenze EVS9328-KHV531?
The drive is programmed and configured using Lenze Global Drive Control (GDC) software version 4.x or higher.
Can I transfer drive parameters without using a PC?
Yes, complete parameter sets can be uploaded into a Keypad XT Type 9371BB operator module from an existing drive and downloaded directly into the replacement inverter.
What causes an OC1 fault code on the EVS9328-KHV531?
An OC1 code indicates instantaneous overcurrent in the output power stage, typically caused by a motor cable short circuit, winding fault, or damaged drive output transistors.
What does a solid yellow IMP LED mean on the front display?
A solid yellow IMP LED indicates pulse inhibit active, meaning the inverter is disabled because terminal 28 or an connected safety circuit is open.
Which fieldbus modules are compatible with the Automation Slot?
The Automation Slot supports fieldbus option modules including the EMF2133IB for PROFIBUS-DP, EMF2102IB for INTERBUS, and EMF2175IB for CANopen.
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