E
Elizabeth PerezSep 12, 2025
What does EPM Fault mean on Lenze AC Tech SF450 Controller?
- LLinda AllenSep 12, 2025
An EPM Fault on your Lenze AC Tech Controller indicates that the EPM is missing or damaged.
To Next PageTo Next PageWhat does EPM Fault mean on Lenze AC Tech SF450 Controller?
An EPM Fault on your Lenze AC Tech Controller indicates that the EPM is missing or damaged.
General| Series | SF450 |
|---|---|
| Output Voltage | 0-Input Voltage |
| Output Frequency | 0-400 Hz |
| Input Frequency | 50/60 Hz |
| Control Method | Sensorless Vector Control |
| Protection Features | Overcurrent, Overvoltage, Undervoltage, Short Circuit |
| Communication Interface | Modbus RTU |
| Operating Temperature | -10°C to +50°C |
| Humidity | 5-95% (non-condensing) |
| Enclosure Rating | IP20 |
Explains the layout of safety information, including signal words and icons.
Details the 24-month warranty for SCF Series AC motor controls against defects.
General safety precautions regarding electrical hazards and handling of the drive.
SCF drives are for inclusion in equipment; avoid adverse environmental conditions.
Procedure to reform DC bus capacitors after long storage to prevent damage.
Warns that capacitors retain charge after power removal and advises waiting before servicing.
Warns about DC current and specifies RCD Type B for protection.
Warns of electrical hazards and advises checking ratings and codes for wiring.
Details wiring connections for single-phase and three-phase input models.
Warns against connecting AC power to output terminals to prevent severe damage.
Warns that STOP terminal/key does not stop drive in JOG mode; remove JOG command instead.
Warns of electrical shock and capacitor charge before servicing.
Warns against connecting AC to output terminals and advises on power cycling frequency.
Provides steps to verify correct motor rotation after initial power up.
Describes how to enter the program mode and access parameters via the keypad.
Warns against removing the EPM while power is applied to avoid drive damage.
Calibrates the drive for applied input voltage (HIGH/LOW).
Sets the output IGBT switching rate, affecting motor noise and derating.
Details various start methods like Normal, Start on Power Up, and Flying Restart.
Warns that automatic starting can cause damage or injury; use only for inaccessible equipment.
Explains how to clear faults and the auto-restart behavior after faults.
