Why does my Lenze AC Tech SCF show a Current Overload Fault?
A Current Overload Fault in your Lenze AC Tech Controller indicates that the VFD is undersized for the application or there is a mechanical problem with the driven equipment.
What causes an Output Transistor Fault in Lenze AC Tech SCF?
An Output Transistor Fault in your Lenze AC Tech Controller can be triggered by a phase-to-phase or phase-to-ground short circuit on the output, a failed output transistor, boost settings that are too high, or an acceleration rate that is too fast.
What causes a Low DC Bus Voltage Fault in Lenze AC Tech Controller?
A Low DC Bus Voltage Fault in your Lenze AC Tech Controller is caused by line voltage that is too low.
What to do if Lenze AC Tech Controller displays a Control Fault?
If your Lenze AC Tech Controller displays a Control Fault, it may be due to a blank EPM or an EPM with corrupted data. Perform a factory reset using Parameter 48 - PROGRAM SELECTION.
How to resolve Incompatibility Fault on Lenze AC Tech SCF?
An Incompatibility Fault on your Lenze AC Tech Controller indicates that an EPM with an incompatible parameter version has been installed. You can either exchange the EPM or perform a factory reset (Parameter 48) to change the parameter version of the EPM to match the parameter version of the drive.
What does Single-phase Fault mean on Lenze AC Tech SCF?
A Single-phase Fault on your Lenze AC Tech Controller means that single-phase input power has been applied to a three-phase drive.
Why does my Lenze AC Tech SCF Controller show a Start Fault?
A Start Fault on your Lenze AC Tech Controller occurs when a start command was present when the drive was powered up. You must wait 2 seconds after power-up to apply the Start command if START METHOD is set to NORMAL.
What does External Fault mean on Lenze AC Tech Controller?
An External Fault occurs on your Lenze AC Tech Controller when TB-13A and/or TB-13C is set as an External Fault input and TB-13A and/or TB-13C is open with respect to TB-2. Refer to Parameter 10 or 12.
What causes a Data Fault in Lenze AC Tech SCF Controller?
A Data Fault in your Lenze AC Tech Controller indicates that user data and OEM defaults in the EPM are corrupted.
What does Serial Fault mean on Lenze AC Tech SCF?
A Serial Fault indicates that the watchdog timer has timed out, meaning the serial link has been lost on your Lenze AC Tech Controller.
Details the scope of the manual for the Lenze AC Tech SCF Series Variable Frequency Drive.
Lenze AC Tech's policy on product modifications and liability.
Outlines the warranty terms and conditions for the SCF Series AC motor control.
Instructions for inspecting equipment for damage and shortages upon receipt.
General safety precautions for operating and handling the SCF Series drives.
Provides dimensional data for the through-hole mount option of the SCF drive.
Procedure for reforming DC bus capacitors after extended storage periods.
Policy statement regarding the use of drives with explosion-proof motors.
Details the voltage input ranges and operating frequencies for SCF Series drives.
Specifies fuse and circuit breaker ratings according to NEC and local codes.
Provides AWG and mm² requirements for input power wiring.
Guidelines for meeting Electromagnetic Compatibility (EMC) standards during installation.
Instructions for wiring single-phase and three-phase input power to the drive.
Guidelines for separating control and power wiring to prevent noise interference.
Explains the function of TB-2 terminals for common connections and serial communications.
Recommends using snubber circuits or diodes to protect against surges from relays.
Refers to wiring diagrams for 2-wire and 3-wire start/stop circuits.
Describes analog speed reference inputs (0-10 VDC, 4-20 mA).
Explains how to select speed sources via terminals or keypad.
Describes open-collector outputs for drive status indications.
Illustrates the terminal strip layout and functions on the main control board.
Wiring diagram for a typical two-wire start/stop control scheme.
Wiring diagram for an alternate two-wire start/stop control scheme.
Wiring diagram for a typical three-wire start/stop control scheme.
Wiring for speed pot and preset speed control with start/stop circuits.
How to set parameter values in tenths of units, especially above 100.
Details the function and use of the removable Electronic Programming Module (EPM).
Describes how the drive's speed is displayed under various conditions.
Explains how display messages indicate changes in speed reference sources.
Lists and describes status and warning messages shown on the drive display.
Explains how to match PI mode to system control types (direct/reverse).
Discusses transducers and transmitters used for PI feedback signals.
Lists available references for adjusting the process setpoint in PI mode.
Lists parameters specific to the PI Setpoint Control option.
Details the PI-specific parameters and their functions.
Describes additional parameters related to PI functionality and outputs.
Provides wiring examples for common PI control configurations.
Explains how to tune the PI control loop for optimal performance.
Lists additional status messages specific to the PI option.
General| Output Frequency | 0 - 400 Hz |
|---|---|
| Output Voltage | 0 - Input Voltage |
| Frequency | 50/60 Hz |
| Enclosure | IP20 |
| Protection Features | Overvoltage, Undervoltage, Overcurrent, Short Circuit |
| Communication | Modbus RTU |
| Operating Temperature | -10°C to +50°C |
| Humidity | 5 - 95% non-condensing |
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