To Next PageTo Next PageWhat does EF External Fault (flashing) mean on Omron VARISPEED L7?
If your Omron Inverter is showing a flashing EF External Fault, it indicates a faulty control sequence. Check external sequence logic, ensuring that only one input is received at a time.
General| Cooling Method | Forced air cooling |
|---|---|
| Type | VARISPEED |
| Output Frequency | 0 to 400 Hz |
| Control Method | V/f control, Sensorless vector control |
| Overload Capacity | 150% for 60 seconds |
| Communication | Modbus RTU |
| Protection Functions | Overcurrent, overvoltage, undervoltage, overload, overheating, short circuit |
| Ambient Temperature | -10°C to +50°C |
Describes the Varispeed L7 as a frequency inverter specifically designed for lifts.
Details the different models available in the Varispeed L7 series, including voltage classes and capacities.
Outlines the checks required upon receiving the inverter, including model verification and inspection for damage.
Provides exterior diagrams and dimensional data for IP00 and IP20/NEMA 1 inverters for installation purposes.
Specifies requirements for the installation site, including ambient temperature and humidity, and pollution degree.
Details the correct vertical installation orientation and required clearance for proper heat dissipation.
Explains the procedure for removing and attaching the terminal cover for wiring access.
Guides on how to remove and attach the digital operator, LED monitor, and front cover for access or replacement.
Shows the electrical connection diagram for the inverter, illustrating main and control circuits.
Illustrates the layout and arrangement of terminal blocks for both 200 V/400 V class inverters.
Provides applicable wire sizes and crimp terminals for main circuit connections, detailed by inverter model.
Details wire sizes, ferrules, and recommended cables for control circuit wiring.
Explains wiring rules and provides an example for EN81-1 compliant installation with a single motor contactor.
Lists essential checks to perform after wiring is completed to ensure correctness and safety.
Details available option cards, their specifications, mounting locations, and wiring procedures.
Explains the operation status indication using combinations of LED lights (RUN, DS1, DS2).
Describes the Digital Operator's keys, display, and mode indicators for inverter operation and parameter setting.
Outlines the five inverter modes (Drive, Quick Programming, Advanced Programming, Verify, Autotuning) and their primary functions.
Explains how to navigate between different inverter modes using the MENU and DATA/ENTER keys.
Details how to operate the inverter, display monitor parameters, and change frequency references in Drive mode.
Describes setting basic parameters for elevator operation like speeds and acceleration/deceleration times.
Explains how to monitor and set all inverter parameters using the advanced programming mode.
Describes how to display and change parameters that differ from their default factory settings.
Explains how autotuning automatically measures and sets motor data for optimal performance.
Provides a flowchart illustrating the basic start-up sequence for the inverter and motor.
Lists crucial checks to perform before switching on the power supply and describes the display after power up.
Guides on selecting the appropriate control mode (V/f, Vector) based on motor type and encoder.
Explains the autotuning function for setting V/f patterns, motor data, and encoder data automatically.
Details how to select the autotuning mode based on the control mode and mechanical system.
Provides a flowchart for the autotuning procedure for induction motors in V/f, Open Loop Vector, and Closed Loop Vector control.
Details the autotuning procedure for permanent magnet motors in Closed Loop Vector control.
Explains the procedure for tuning the encoder offset when the encoder has been changed or misaligned.
Provides precautions for autotuning induction motors, especially regarding voltage and frequency settings.
Lists common autotuning alarms and faults, including data input errors and corrective actions.
Offers adjustment advice for improving inverter and motor performance after basic setup.
Explains the structure of user parameter tables and the meaning of each field.
Shows the hierarchy of functions and levels available on the Digital Operator display.
Lists minimum user parameters required for inverter operation, accessible in Quick Programming Mode.
Details parameters for language selection, parameter access level, control method, initialization, and password.
Covers parameters for operation mode selections, RUN command source, and DC injection braking.
Details parameters for acceleration, deceleration, S-curve settings, and slip compensation.
Explains parameters for setting various speed references, including nominal, intermediate, and leveling speeds.
Covers V/f pattern settings, motor setup parameters (rated current, slip, poles, etc.), and PM motor adjustments.
Details parameters related to PG option cards, including PG constant, rotation direction, and division ratio.
Explains the functions assigned to multi-function digital inputs and outputs, and their corresponding parameters.
Covers parameters for motor overload protection, power loss settings, stall prevention, reference detection, and fault restart.
Details parameters for Automatic Frequency Regulator (AFR) and Feed Forward control for fine-tuning.
Explains parameters for adjusting PM motor characteristics like ACR gains, position detection, and inductance.
Covers parameters for brake sequence, torque compensation, speed selection, and short floor operation.
Details parameters for motor autotuning, including mode selection and motor data input.
Lists parameters for monitoring inverter status, operation status, fault history, and input/output signals.
Explains carrier frequency selection, its impact on noise and overload capability, and current limitation at low speeds.
Details UP/DOWN commands, travel stop methods, and selection of command/reference sources.
Explains how to set acceleration/deceleration times and switch between them using multi-function inputs or speed levels.
Guides on adjusting analog input signals from terminal A1 and AI-14B option card for frequency reference.
Covers speed agreement functions, detection methods, and limiting elevator speed to leveling speed.
Details methods for reducing motor speed fluctuation using slip compensation and adjusting torque compensation.
Explains stall prevention, motor torque detection, car stuck detection, and other protective functions.
Covers inverter overheat protection, input/output open phase detection, ground fault detection, and cooling fan control.
Describes functions for digital inputs, including baseblock, external fault, and timer functions.
Explains functions for digital outputs like inverter operation status, fault signals, and brake commands.
Guides on setting motor parameters for induction and PM motors, including V/f pattern setup.
Covers settings for the digital operator, including monitor selection, display units, and contrast.
Details PG option card setup, including PG constant, rotation direction, and division ratio.
Explains how to use the rescue system, including power supply requirements and wiring examples.
Describes the automatic fault reset function, including number of resets and fault relay operation.
Details MEMOBUS communications configuration, specifications, message format, and error codes.
Explains fault detection categories, resetable faults, and provides a list of faults with meanings, causes, and corrective actions.
Addresses common problems like parameters not setting, motor not operating, incorrect rotation, and stalling.
Lists essential items to check during periodic maintenance, including motor vibration, heat, ambient temperature, and fan operation.
Provides guidelines for standard replacement periods for parts like cooling fans, capacitors, and fuses.
Details the procedure for removing and mounting the cooling fan assembly for inverters up to 18.5 kW.
Explains how to remove and mount the control circuit terminal card without disconnecting control wiring.
Lists electrical and power supply specifications for 200 V and 400 V class inverters by model number.
Explains how ambient temperature, carrier frequency, and altitude affect inverter output current and performance.
Lists AC reactors required to meet EN 12015 compatibility standards, including model codes, dimensions, and weight.
Provides information on EN 954-1 and EN81-1 certifications for the inverter.
Lists precautions for selecting and installing inverters, including reactor installation and enclosure requirements.
Provides precautions for using the inverter with existing standard motors and special motors like pole-changing or single-phase.
Lists the factory settings for various parameters, specific to a 200 V Class 3.7 kW Inverter.
