Lenze EVS9326-EP 9300 Servo Position Controller 11kW
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Product Information
The Lenze EVS9326-EP is an 11 kW single-axis servo position controller from the Lenze 9300 Servo series, engineered for high-precision rotary and linear positioning across automated multi-axis, packaging, and material handling systems. Operating on a 3-phase supply voltage from 320 V AC to 528 V AC, the unit delivers a continuous rated output current of 23.5 A with a maximum peak output of 35.3 A at an 8 kHz switching frequency. By integrating 32-bit positioning logic, drive control, and a power inverter into a single compact housing, the drive executes up to 32 target positioning profiles with programmable S-curve acceleration ramps and homing functions. Practical interface connections include eight HTL digital inputs, four digital outputs, two differential analog inputs, two analog outputs, a Sub-D 9-pin resolver connection, and motor feedback inputs supporting incremental and absolute Sin/Cos encoders.
Integrating a replacement EVS9326-EP into an existing production line requires matching physical feedback connections, fieldbus networks, and internal software parameter sets. System communication is handled via an integrated CANopen bus on terminals X4 and X5 at transmission speeds up to 500 kbit/s, complemented by an Automation Interface Slot (AIF) that accepts optional communication adapters such as PROFIBUS-DP or DeviceNet. A spare unit cannot run on factory default settings alone; the motor parameters, fieldbus node address, positioning tables, and software limit switches stored in the controller's non-volatile EEPROM must be transferred. Parameter sets can be backed up and restored using a Keypad XT module (EMZ9371BC or EMF2133IB) or Lenze Global Drive Control (GDC) engineering software. ABC Industrial Parts can support maintenance teams with pre-configured replacement units and parameter transfers to ensure rapid, seamless commissioning.
Comprehensive diagnostic tools enable straightforward troubleshooting during startup and routine operation. Two front status LEDs provide instant visual feedback: the green Ready indicator shows operational status or drive inhibit, while the red Fault LED signals active TRIP faults or warnings. Additional diagnostic data—including error logs stored in parameter memory buffer C0168—can be monitored via CAN bus status words or the GDC scope interface. Fault codes quickly highlight external line issues, such as DC bus overvoltage (OU), undervoltage (LU), or short circuits (OC1), allowing targeted electrical checks. When internal board-level faults occur, such as hardware failure code H05, the drive cannot be repaired in the field, making a tested exchange unit or professional repair through ABC Industrial Parts the most effective route to minimize operational downtime.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | EVS9326-EP |
| Model / Type | 9300 Servo Position Controller |
| Component Type | Servo Controller |
| Product Family | 9300 Servo |
| Rated Power Output | 11 kW |
| Supply Voltage Range | 320 - 528 V AC (3-Phase) |
| Continuous Rated Current | 23.5 A |
| Maximum Output Current | 35.3 A |
| Switching Frequency | 8 kHz |
| Digital Inputs | 8 (HTL) |
| Digital Outputs | 4 |
| Analog Inputs | 2 (Differential) |
| Analog Outputs | 2 |
| Integrated System Bus | CANopen (up to 500 kbit/s) |
| Motor Feedback Types | Resolver, Incremental Encoder, Absolute Sin/Cos Encoder |
Programming and Configuration
Programming and configuring the Lenze EVS9326-EP is executed through Lenze Global Drive Control (GDC) software or directly via a plug-in Keypad XT module (EMZ9371BC or EMF2133IB). The controller's internal 32-bit positioning engine manages up to 32 independent positioning profiles, including target position tables, velocity settings, and S-curve acceleration profiles designed to minimize mechanical stress on gantry and pick-and-place systems.
The drive contains a non-volatile internal EEPROM capable of storing up to four complete parameter sets. Parameter management allows technicians to save operational configurations to the Keypad XT module or extract them via GDC for archival and quick duplication across identical axes. Parameter C0043 controls encoder resolution settings, while parameter buffer C0168 stores diagnostic and historical fault data.
When setting up positioning profiles, target position parameters must be validated against software limit switches. Profile errors such as code Pr1 indicate an invalid target parameter set or zero speed entry within the profile table, which can be corrected directly using GDC parameter editor screens or keypad adjustments.
Communication and System Integration
The Lenze EVS9326-EP includes a native CANopen system bus interface located on control terminals X4 and X5. Supporting communication speeds up to 500 kbit/s, the CANopen interface allows peer-to-peer communication between multiple 9300 series drives, direct connection to higher-level controllers, and real-time visualization of drive status words.
For higher-level network integration, the unit features an Automation Interface Slot (AIF) that accepts specialized fieldbus communication modules. Supported options include the EMF2133IB PROFIBUS module and EMF2175IB DeviceNet module, along with Interbus and serial LECOM interfaces. This modular architecture allows the servo controller to integrate seamlessly into diverse PLC topologies.
Proper physical network termination is required for stable communication. The CAN bus line requires 120-Ohm termination resistors at both network ends to prevent bus-off conditions (fault CE4). When utilizing fieldbus options via the AIF slot, verifying module seating and bus master cyclic communication prevents fieldbus interruption alarms (fault CE0).
Diagnostics and Status Indication
The EVS9326-EP provides local and remote diagnostic tools to monitor operational states and fault conditions. Front-panel status LEDs give immediate visual feedback regarding drive readiness and trip conditions, while software-based diagnostic screens in Global Drive Control (GDC) offer deeper insight into internal parameters, CAN status words, and real-time scope recordings.
Fault conditions trigger structured error logs stored in memory buffer C0168. Technicians can review history logs to identify intermittent thermal or electrical faults. First-line checks for operational alerts should focus on AC mains supply stability, DC bus voltage levels, braking resistor circuits, and motor temperature sensor wiring connected at terminal X10.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Ready (Green) | Green - Solid / Flashing | ON: Controller enabled and operational. Flashing: Drive inhibit active or power section initializing. |
| Fault / TRIP (Red) | Red - Solid / Flashing / Off | ON: TRIP fault active. OFF: Normal operation. Flashing: Warning condition present. |
Replacement and Spare Part Considerations
When replacing an existing Lenze EVS9326-EP servo controller, plant technicians must verify that the replacement hardware matches power ratings, supply requirements (320-528 V AC, 3-phase, 11 kW output), and option card configurations. If the original installation utilizes fieldbus communications such as PROFIBUS or DeviceNet, the existing AIF option module must be transferred to the replacement drive's Automation Interface Slot.
Because a spare drive contains factory default values, parameters must be transferred prior to running the axis. Parameter sets can be backed up to a Keypad XT module (EMZ9371BC or EMF2133IB) from the original controller and uploaded directly to the new unit. Alternatively, parameter files saved via Lenze Global Drive Control (GDC) software can be downloaded across the CAN bus interface or terminal communication link.
For long-term modernization plans, the Lenze i950 Cabinet Servo Inverter serves as the designated successor family for legacy 9300 series drives. However, direct one-to-one replacements using verified EVS9326-EP spare units remain the fastest route to restore production lines without modifying PLC code or mechanical mounting setups.
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 | Short circuit at the motor output terminals or extreme motor overcurrent | Motor cable short circuit, interturn motor fault, acceleration dynamic too aggressive | Check motor and power wiring for short circuit or ground fault; increase acceleration time. |
| OC2 | Earth Fault | Ground fault on output phase line | Motor phase grounded to earth or damaged cable insulation | Measure insulation resistance of motor winding and cables. |
| OC5 | I x t Overload | Controller thermal load integral exceeded 100% | Continuous acceleration or heavy mechanical overload exceeding drive rating | Check drive dimensioning and mechanical load for blocking or friction. |
| OU | Overvoltage DC Bus | DC bus voltage exceeds upper threshold (> 770 V DC / 800 V DC) | Excessive braking energy, missing or undersized brake resistor, brake chopper defective | Check brake resistor connection and resistance value; increase deceleration ramp time. |
| LU | Undervoltage DC Bus | DC bus voltage falls below lower threshold (< 430 V DC) | Mains supply failure, phase loss, or weak AC supply line | Check AC supply voltage, line fuses, and main contactor. |
| OH | Heatsink Overtemperature | Controller heatsink temperature exceeded maximum limit (> 85 °C) | Fan failure, blocked cooling air vents, ambient temperature too high | Clean heatsink, verify cabinet ventilation and internal fan operation. |
| OH4 | Motor Overtemperature | Motor temperature sensor trip (PTC / KTY / thermal contact) | Motor overloaded, cooling fan failed, or thermal contact wiring broken | Allow motor to cool down, check motor load and sensor wiring at X10 terminal. |
| OH7 | Internal Drive Temperature | Interior temperature of controller housing exceeded limit | Cabinet ambient temperature too high | Improve control cabinet cooling. |
| OS | Overspeed | Motor speed exceeded maximum limit set in drive parameters | Unstable speed control loop, runaway motor, or misconfigured encoder resolution | Check speed controller gains, resolver/encoder wiring, and parameter C0043. |
| CE0 | AIF Communication Fault | Communication error on Automation Interface slot | Fieldbus master stopped communication or module disconnected | Check fieldbus cabling, master PLC status, and fieldbus module seats. |
| CE4 | System Bus (CAN) Fault | CAN communication error or bus-off state on X4/X5 | Incorrect baud rate, wiring fault, or missing termination resistor (120 Ohm) | Check CAN wiring, bus termination resistors at both ends, and node addresses. |
| H05 | Internal Hardware Fault | Internal electronic control board fault detected during self-test | Hardware component failure on power or control board | Internal hardware fault — power cycle drive; if persistent, return unit for repair or replace unit. |
| Pr1 | Positioning Profile Error | Invalid parameter set or unexecutable profile target in positioning block | Target position out of software limit switches or target speed 0 | Verify position profile program tables and software limit switch parameters. |
Frequently Asked Questions
What software is required to configure the Lenze EVS9326-EP?
The EVS9326-EP is configured using Lenze Global Drive Control (GDC) software or directly via a plug-in Keypad XT module (EMZ9371BC or EMF2133IB).
How are parameters transferred from a failed EVS9326-EP to a replacement unit?
Parameter sets stored in non-volatile internal memory can be transferred by backing them up to a Keypad XT module or extracting the parameter file using GDC software and restoring it to the replacement drive.
What fieldbus protocols does the EVS9326-EP support?
The controller features an integrated CANopen system bus on terminals X4 and X5. Optional fieldbus modules installed in the Automation Interface Slot (AIF) add support for PROFIBUS-DP, DeviceNet, Interbus, and serial LECOM communications.
What does fault code H05 indicate on the EVS9326-EP?
Fault code H05 indicates an internal electronic control board hardware fault detected during self-test. If power cycling the drive does not clear the error, the unit requires repair or replacement.
What motor feedback systems can be connected to the EVS9326-EP?
The drive supports Sub-D 9-pin resolver connections as well as encoder inputs supporting incremental encoders and absolute Sin/Cos feedback encoders.
Is there a recommended successor drive for the Lenze 9300 series?
Yes, the Lenze i950 Cabinet Servo Inverter is the designated successor for legacy 9300 series servo controllers.
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