Lenze E84AVSCE3712SX0 8400 StateLine C Frequency Inverter
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Product Information
The Lenze E84AVSCE3712SX0 is a 0.37 kW frequency inverter from the 8400 StateLine C series, engineered for precise motor speed and dynamic torque control in automated industrial machinery. Designed for installation within control cabinets, this IP20-rated drive operates across a single-phase or three-phase supply voltage range of 180 V AC to 264 V AC at 230 V AC nominal. It delivers a continuous output current of 2.4 A, with transient overload handling up to 3.6 A for 60 seconds and a peak output current of 4.8 A for 3 seconds. The drive supports flexible motor control modes, including VFC plus sensorless vector control, linear or quadratic V/f control, and servo control. An integrated dynamic brake chopper manages regenerative energy during quick deceleration ramps, rendering the unit suitable for conveyor drives, automated packaging lines, pumps, fans, and auxiliary machine tool axes.
Network integration and local interfacing are facilitated through an on-board CANopen system bus interface and a dedicated slot for optional communication modules, including PROFIBUS DP (E84AYCPM), PROFINET (E84AYCER), and EtherCAT or EtherNet/IP (E84AYCET). Putting a spare unit into service is streamlined by the pluggable Lenze Memory Module E84AYM200, which holds the entire operating parameter set. Swapping this memory module from a existing unit into a replacement E84AVSCE3712SX0 enables tool-free parameter copying without needing a PC or software loading. When software configuration or diagnostics are required, the drive interfaces with Lenze EASY Starter and Lenze Engineer software, or can be parameterized manually using the optional Keypad X400 display module (E84DGFCE01). Technical support and pre-configured spares from ABC Industrial Parts help ensure replacement units are ready for immediate deployment.
Drive status and bus activity are indicated on the front panel via status LEDs, including RDY for operational readiness, ERR for fault indication, and dedicated CAN-RUN and CAN-ERR fieldbus status indicators. Comprehensive fault codes and diagnostic logbooks can be read using the Keypad X400 or Lenze EASY Starter. First-line troubleshooting involves checking input supply lines, DC-bus voltage, motor insulation, and the dual-channel Safe Torque Off (STO) safety inputs on terminal X6. Persistent overcurrent trips, internal power stage faults, or STO hardware disparities that cannot be resolved through external wiring checks indicate internal component failure. Under these conditions, board-level repairs or a fully tested exchange drive from ABC Industrial Parts offer an efficient pathway to restoring machine operations.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | E84AVSCE3712SX0 |
| Model / Type | 8400 StateLine C |
| Product Family | Inverter Drives 8400 |
| Component Type | Frequency Inverter |
| Rated Power | 0.37 kW |
| Supply Voltage Range | 180 - 264 V AC (1/N/PE AC 230 V / 3/PE AC 230 V) |
| Rated Output Current | 2.4 A |
| Maximum Output Current (60s) | 3.6 A |
| Peak Output Current (3s) | 4.8 A |
| Output Frequency Range | 0 - 599 Hz |
| Switching Frequency | 8 kHz |
| Control Modes | VFC plus (sensorless vector control), V/f linear, V/f quadratic, Servo control |
| Integrated Dynamic Brake Chopper | Yes |
| Integrated Safety Function | Safe Torque Off (STO) |
| Digital Inputs | 5 |
| Digital Outputs | 2 (1 Digital + 1 Relay) |
| Analog Inputs | 2 |
| Analog Outputs | 2 |
| On-Board Fieldbus Interface | CANopen |
| Protection Rating | IP20 |
Programming and Configuration
The Lenze E84AVSCE3712SX0 frequency inverter utilizes Lenze EASY Starter and Lenze Engineer configuration tools for commissioning, parameter adjustments, and troubleshooting. These engineering suites allow control technicians to set up motor characteristics, program acceleration and deceleration ramps, configure digital and analog I/O mappings, and establish custom drive behavior. Software diagnostic logbooks store historical fault records to aid in root-cause determination during unplanned downtime.
Hardware replacement and configuration transfer are simplified by the removable Lenze Memory Module (E84AYM200). The memory module stores the complete inverter parameter set. In a replacement scenario, extracting the module from the damaged unit and seating it into the replacement E84AVSCE3712SX0 automatically updates the drive settings, enabling instant hardware swaps without connecting software tools.
Communication and System Integration
The Lenze E84AVSCE3712SX0 includes an on-board CANopen system bus interface for integration into centralized machine automation networks. The CANopen link supports real-time transfer of process data, including velocity setpoints, torque commands, operating status, and fieldbus diagnostic registers. Standard sub-D or terminal wiring connections allow direct integration into existing CAN networks.
For plants using alternative network topologies, the 8400 StateLine C frame features an optional communication slot. Installing add-on communication modules expands connection capabilities to higher-level networks, such as PROFIBUS DP (E84AYCPM), PROFINET (E84AYCER), and EtherCAT or EtherNet/IP (E84AYCET), providing broad flexibility across industrial control environments.
Diagnostics and Status Indication
Visual status monitoring on the Lenze E84AVSCE3712SX0 front panel is managed through four dedicated LEDs. The RDY and ERR LEDs indicate operational readiness, active warnings, and fault lockouts. Network status and communication errors across the CANopen system bus are continuously indicated by the CAN-RUN and CAN-ERR LEDs.
Detailed error messages and trip details can be accessed by attaching the optional Keypad X400 display module (E84DGFCE01) or by connecting Lenze EASY Starter software. The diagnostic interface provides access to active fault logs, dynamic internal parameters, and historical diagnostic records for accurate fault identification.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| RDY | Green - Solid / Flashing | Drive is ready for operation or in active operational state. |
| ERR | Red - Solid / Flashing | Drive fault or error active. Flashing indicates warning; solid red indicates lockout fault. |
| CAN-RUN | Green - Solid / Flashing | CANopen fieldbus operating status indicator. |
| CAN-ERR | Red - Solid / Flashing | CANopen fieldbus communication fault or bus-off state. |
Replacement and Spare Part Considerations
When replacing an existing Lenze E84AVSCE3712SX0 frequency inverter, confirm that the substitute matches the exact part number and electrical continuous ratings (0.37 kW power output, 2.4 A output current, and 230 V AC supply). Ensure that any optional fieldbus module mounted on the original drive (such as PROFIBUS DP, PROFINET, or EtherCAT) is removed and transferred to the replacement unit.
Parameter transfer can be executed without engineering software by swapping the removable Lenze Memory Module (E84AYM200) into the replacement unit. This chip retains all user configuration datasets and motor parameters. Verify that dual-channel safety connections on terminal X6 for Safe Torque Off (STO) are wired identically to maintain machine safety compliance.
For long-term system modernizations or replacement upgrades, Lenze recommends the i550 series inverter platform. Migrating to the i550 series requires parameter conversion using modern Lenze software and physical control panel integration.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| 0x00100011 | LU - Undervoltage DC bus | DC-bus voltage fell below lower threshold during operation | Mains supply voltage too low, mains phase missing, or power supply interruption | Check supply voltage, line fuses, and main circuit wiring |
| 0x00100012 | OU - Overvoltage DC bus | DC-bus voltage exceeded upper permissible limit | Braking energy too high, deceleration ramp too short, or uncorrected generator operation without braking resistor | Extend deceleration time (ramp), install external brake resistor, or check brake chopper functionality |
| 0x00100021 | OC1 - Overcurrent / Short Circuit | Instantaneous output current threshold exceeded | Short circuit at output terminals, motor ground fault, acceleration ramp too short, or defective power output stage | Check motor cable and motor insulation, extend acceleration time. Internal hardware failure requiring repair if persistent without load connected. |
| 0x00100022 | OC5 - I2t Drive Overload | Drive thermal continuous output overload limit exceeded | Drive operated in continuous overload beyond rated current, motor stalled or oversized for inverter rating | Check mechanical load, verify motor and drive sizing, reduce duty cycle |
| 0x00100031 | OH - Heatsink Overtemperature | Inverter heatsink temperature exceeds limit (>90°C) | Insufficient cooling, fan failure, ambient temperature too high, or blocked cooling fins | Clean heatsink, check cabinet ventilation and fan function, reduce ambient temperature |
| 0x00100032 | OH4 - Motor Overtemperature (I2t) | Motor thermal model calculated temperature trip or thermal contact activated | Motor thermal overload, low speed operation with inadequate forced cooling, or tripped PTC sensor | Allow motor to cool, verify motor cooling fan, check load, inspect motor temperature sensor wiring |
| 0x00100041 | Earth Fault | Ground fault detected on motor connection side | Motor winding insulation failure, ground fault in motor power cable | Test insulation resistance of motor wiring and motor windings with high-voltage tester |
| 0x00100051 | Mains Phase Failure | Failure or high ripple on input power supply line | Missing phase on 3-phase supply or heavy unbalance in supply system | Check line supply fuses, mains switches, and input wiring |
| 0x00100061 | Motor Phase Failure | Output phase interruption detected | Broken motor cable wire, disconnected terminal, or defective motor contactor | Inspect output motor power connection terminals and cable wiring |
| 0x00100071 | STO Fault | Safe Torque Off safety channel disparity or hardware fault | Dual-channel inputs on X6 terminal not switching synchronously or internal safety circuit fault | Check safety logic signals to X6. Internal hardware fault requiring return for repair if safety inputs are correct but fault persists. |
| 0x00100081 | Memory Module Error | Communication failure or data corruption in pluggable Memory Module | Memory module missing, damaged, or corrupted during save | Ensure Memory Module is securely seated in slot; re-commission or replace Memory Module. Internal hardware fault if slot connector damaged. |
| 0x00100091 | CAN Bus Off / Timeout | CANopen system bus communication interrupted | Bus wiring fault, incorrect baud rate, missing termination resistor, or fieldbus master offline | Check CAN cabling, termination resistors, baud rate matching, and master controller status |
Frequently Asked Questions
How do I copy parameter settings to a replacement Lenze E84AVSCE3712SX0 drive?
Parameters can be transferred tool-free by removing the pluggable Lenze Memory Module (E84AYM200) from the original drive and inserting it into the slot of the replacement inverter. Alternatively, parameters can be transferred using Lenze EASY Starter or Lenze Engineer software.
What safety integration features are built into the E84AVSCE3712SX0 inverter?
The inverter features integrated Safe Torque Off (STO) functional safety compliance via terminal X6. This allows dual-channel safety stopping without the need for external power contactors.
What communication interfaces are available on this 8400 StateLine C unit?
The drive includes a built-in CANopen system bus interface. It also accepts optional fieldbus communication modules for PROFIBUS DP (E84AYCPM), PROFINET (E84AYCER), and EtherCAT or EtherNet/IP (E84AYCET).
What does a solid red ERR LED indicate on the inverter front panel?
A solid red ERR LED indicates an active drive trip or lockout fault. Specific fault details can be read via the Keypad X400 module or through Lenze EASY Starter diagnostic software.
What is the modern replacement series for the Lenze 8400 StateLine C?
The Lenze i550 series is the recommended modern replacement series for 8400 StateLine C frequency inverters.
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