Lenze 00484905 EVS9321-ETV911 – 9300 Servo Drive 0.75kW
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Product Information
The Lenze 00484905 (EVS9321-ETV911) is a 0.75 kW panel-mounted servo drive from the Lenze 9300 Servo Inverters family, designed for precise multi-axis motion control and positioning applications with synchronous and asynchronous servo motors. Operating on a 3-phase supply voltage ranging from 320 V AC to 528 V AC, the drive delivers a continuous output current of 2.5 A with a rated mains input current of 2.2 A. To handle dynamic acceleration cycles and peak torque demands, it provides a 150% overload capacity allowing up to 3.75 A output current at an 8 kHz switching frequency and a maximum output frequency of 480 Hz.
Interfacing with position feedback devices is handled via 15-pin Sub-D connectors, with terminal X7 configured for resolver feedback and terminal X8 dedicated to incremental encoders. Network connectivity is supported through an integrated CAN system bus running CAN/CANopen at speeds up to 500 kbit/s for multi-axis coordination. A modular Automation Interface (AIF) slot accommodates optional fieldbus communication modules, including PROFIBUS-DP (EMF2133IB), INTERBUS (EMF2111IB), and RS-485 LECOM-B (EMF2102IB), as well as the 9371BB operating keypad (EMF2171IB). Bringing a replacement drive into operation requires loading the machine parameter set, as the spare unit must be configured to match the application. Parameters can be managed using Lenze Global Drive Control (GDC) software or transferred via the plug-in 9371BB keypad into non-volatile internal EEPROM storage holding up to four parameter sets. ABC Industrial Parts provides assistance with replacement units and parameter transfers to help streamline commissioning.
Diagnostic monitoring on the EVS9321-ETV911 drive is performed using onboard LED status indicators, keypad sub-menus, and GDC monitoring utilities. A solid green LED indicates that the power stage is enabled and operational, while a blinking green LED signals that controller inhibit is active. A blinking red LED indicates an active TRIP error state, with the flash rhythm reflecting the fault category. Fault tracking is aided by an internal fault memory buffer storing recent TRIP events and CAN bus diagnostic registers. The drive reports specific conditions including short circuit (OC1), overvoltage (OU), undervoltage (LU), motor and device thermal trips (OH, OH3, OH8, OC5, OC6), and feedback loss (rtr on X7, Sd7 on X8). When internal micro-controller hardware errors (H05) or persistent EEPROM faults (EER) occur after restoring factory defaults, internal components cannot be serviced on site, making a pre-tested replacement unit or repair through ABC Industrial Parts the effective resolution.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | 00484905 |
| Model / Type | EVS9321-ETV911 |
| Product Family | 9300 Servo Inverters |
| Component Type | Servo Drive |
| Rated Power | 0.75 kW |
| Supply Voltage Range | 320 to 528 V AC |
| Rated Mains Input Current | 2.2 A |
| Continuous Output Current | 2.5 A |
| Peak Output Current (Overload) | 3.75 A (150%) |
| Switching Frequency | 8 kHz |
| Maximum Output Frequency | 480 Hz |
| Integrated System Bus | CAN / CANopen (up to 500 kbit/s) |
| Feedback Interfaces | Resolver (X7), Incremental Encoder (X8) via 15-pin Sub-D |
| Expansion Slot | Automation Interface (AIF) slot |
Programming and Configuration
Parameterization and commissioning of the Lenze EVS9321-ETV911 servo drive are carried out using Lenze Global Drive Control (GDC) engineering software or the plug-in Keypad 9371BB (EMF2171IB). GDC software provides parameter editing windows, live status monitoring, and integrated diagnostic oscilloscope functions to evaluate drive behavior during setup.
The drive contains internal non-volatile EEPROM memory capable of storing up to four complete parameter sets. This memory structure allows machine configurations to be switched or cloned without requiring re-entry of motor data. Re-initialization to factory default settings is initiated via parameter C0002, while thermal motor protection parameters such as I2t parameters are adjusted in codes C0075 and C0076.
Communication and System Integration
System integration is facilitated by the built-in CAN system bus interface, which supports CANopen protocol operation at transmission rates up to 500 kbit/s. The CAN system bus enables multi-axis synchronization and centralized access to internal parameter registers across networked units. Proper operation requires correct node address configuration, matching baud rates, and 120 ohm termination resistors installed at both physical ends of the bus line.
In addition to the CAN interface, the drive includes a modular Automation Interface (AIF) slot. This slot accommodates optional fieldbus communication cards, including PROFIBUS-DP (EMF2133IB), INTERBUS (EMF2111IB), and RS-485 LECOM-B (EMF2102IB). When an optional fieldbus card is fitted, network communications are managed directly through the option module while primary motor control functions remain managed by the internal control board.
Diagnostics and Status Indication
Operational status and fault conditions are communicated through onboard LEDs located on the front of the unit, as well as status sub-menus on the plug-in Keypad 9371BB. Live operating parameters and active error logs can also be monitored across the CAN system bus or within the diagnostic monitoring windows of Lenze Global Drive Control (GDC) software.
An internal fault history buffer records active and past TRIP fault conditions. The onboard LEDs provide immediate visual verification of power stage activity, controller inhibit mode, and fault categories.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| Red LED | Red - Blinking | TRIP error active. Blinking sequence indicates active TRIP error category or fault mode. |
| Green LED | Green - Solid / Blinking | On continuously when power stage is enabled and running; blinking when controller inhibitor is active. |
Replacement and Spare Part Considerations
When replacing a failed Lenze EVS9321-ETV911 drive, verify that the replacement unit shares the exact part number (00484905) and power rating of 0.75 kW. Confirm that input power wiring matches the 320 to 528 V AC rating and that motor feedback connections at X7 (resolver) or X8 (encoder) are securely attached.
Before applying power to run the machine, transfer the existing parameter set into the replacement drive. Installing a unit with factory default parameters or unaligned parameters can cause unexpected motion or trip faults. Parameter transfer can be completed via Lenze Global Drive Control (GDC) software or by moving the parameter set stored on a 9371BB keypad module into the internal EEPROM.
If the original installation uses an optional fieldbus card—such as PROFIBUS-DP (EMF2133IB), INTERBUS (EMF2111IB), or RS-485 LECOM-B (EMF2102IB)—transfer the AIF option module from the old drive to the new unit and verify module seating to prevent AIF communication errors (CE1).
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 / Earth fault | Short circuit or earth fault on motor output terminals, power stage overcurrent | Motor cable short circuit, inter-turn winding fault in motor, earth leakage on motor cable | Check motor wiring and insulation, check motor windings. If fault persists with motor disconnected, internal inverter output stage failure exists requiring return for repair. |
| OC2 | Overcurrent during acceleration | Output current exceeds threshold limit during acceleration ramp | Acceleration time too short, motor mechanical overload or lock, incorrect motor control parameters | Increase acceleration time, check mechanical load and motor sizing, re-verify motor parameter settings. |
| OC3 | Overcurrent during deceleration | Output current exceeds peak threshold during deceleration phase | Deceleration ramp time set too short without braking resistor, high mechanical inertia | Extend deceleration time, fit or check external brake chopper/resistor. |
| OC5 | I x t motor overload | Calculated thermal load of motor has exceeded permissible limit | Continuous motor operation above rated torque level, improper motor cooling | Reduce motor load, improve motor ventilation, verify I2t parameters in C0075/C0076. |
| OC6 | I x t device overload | Calculated thermal load of drive inverter power section exceeded permissible limits | Drive continuously operated above rated continuous current limit | Reduce acceleration rate or mechanical cycle duty, check drive continuous sizing. |
| OU | Overvoltage on DC bus | Intermediate DC bus voltage has exceeded upper threshold (approx. 770 V DC) | Excessive regenerative energy returned during braking without operational brake chopper/resistor, mains voltage too high | Check brake resistor connection and value, extend deceleration time, check mains supply voltage. |
| LU | Undervoltage on DC bus | Intermediate DC bus voltage dropped below minimum operating limit | Mains supply supply voltage interruption, phase failure, mains supply too low | Check supply voltage lines, power fuses, and main contractor operations. |
| OH | Heatsink overtemperature | Inverter heatsink temperature exceeds maximum allowable threshold (>85°C) | Inadequate control cabinet cooling, fan failure, ambient temperature too high, dirty heatsink fins | Clean heatsink, verify control cabinet ventilation and fan operational status, reduce ambient temperature. |
| OH3 | Motor thermal sensor trip | Motor temperature sensor connected to X6 terminal registered excessive temperature | Motor thermal overload, PTC sensor tripped, KTY sensor value out of limit | Allow motor to cool, check motor cooling and duty cycle, inspect sensor wiring. |
| OH8 | Motor sensor wire break | Open circuit detected on motor thermal monitoring circuit (PTC / KTY line) | Disconnected motor thermal wire or damaged cable line | Check wiring between motor thermal contact and drive terminals X6/T1, X6/T2. |
| CE0 | CAN System Bus fault | Communication fault on integrated CAN system bus interface | CAN bus line interruption, missing bus termination resistors, incorrect baud rate setting, node address collision | Check CAN wiring, shield grounding, 120 ohm termination resistors at both bus ends, verify node IDs and baud rates. |
| CE1 | AIF communication error | Communication failure between inverter control board and plugged-in AIF module | Loose communication module, fieldbus network fault, module defect | Check mechanical seating of AIF option card, inspect fieldbus connections. |
| EER | EEPROM memory error | Internal EEPROM checksum error when reading non-volatile parameter memory | Corrupted non-volatile memory data, EMC interference during parameter saving, hardware fault | Reload factory default settings (C0002) and re-download parameter set. If fault reoccurs, internal hardware failure — return unit for repair. |
| H05 | Internal hardware fault | Hardware self-test failed on drive control micro-controller board | Internal component defect, defective control board | Internal hardware fault — power cycle drive unit. If persistent, return unit for repair or replace component. |
| rtr | Resolver fault | Resolver signal evaluation error or loss of feedback signal on interface X7 | Resolver cable disconnected or damaged, shielding issue, bad resolver motor coil | Inspect resolver cable, connector X7, cable shielding, measure resolver phase resistance. |
| Sd7 | Resolver / encoder supply break | Feedback supply line open circuit or encoder line break on interface X8 | Sensor cable disconnected or shorted supply voltage line | Check feedback sensor cable and power wiring to encoder. |
| LP1 | Mains phase failure | Phase loss detected on AC mains supply power lines | Missing phase on L1, L2, or L3, blown supply line fuse | Check 3-phase line AC voltage and supply fuses. |
| NMAX | Maximum speed exceeded | Actual motor speed exceeds parameter max speed limit by >10% | Incorrect motor feedback parameterization, unstable speed controller tuning, driving external load overrun | Check speed controller parameter settings (gain/integral time), verify encoder/resolver pulse configuration. |
Frequently Asked Questions
What software is used to configure and program the Lenze EVS9321-ETV911 servo drive?
The drive is configured using Lenze Global Drive Control (GDC) software. Alternatively, basic parameter adjustments and transfer can be performed directly via the plug-in Keypad 9371BB (EMF2171IB).
How do I resolve an EEPROM memory error (fault code EER)?
Reload factory default settings using parameter C0002 and re-download the parameter set. If the EER fault persists after parameter reload, an internal hardware failure has occurred requiring component repair or drive replacement.
Which communication option modules fit into the drive's AIF slot?
The Automation Interface (AIF) slot accepts fieldbus cards including PROFIBUS-DP (EMF2133IB), INTERBUS (EMF2111IB), and RS-485 LECOM-B (EMF2102IB), as well as the 9371BB operating keypad.
What do the onboard status LEDs indicate during operation?
A solid green LED indicates the power stage is enabled and running, while a blinking green LED means controller inhibit is active. A blinking red LED indicates an active TRIP error condition.
What causes an rtr fault code on the Lenze EVS9321-ETV911?
An rtr fault indicates a resolver feedback signal error or loss on interface X7. Recommended checks include inspecting the resolver cable, checking connector X7 seating, verifying shield grounding, and testing resolver coil resistance.
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