Error, fault and alarm codes of products - what each code means, its causes and what to do - read from the manufacturers’ manuals, with the manual page each answer comes from.
Overload protection triggered when IGBT internal temperature exceeds preset value based on output current and cooling fan temperature detection. The manual lists no action for this code.
External alarm input received an external signal, triggering an alarm without a specific cause listed. The manual lists no action for this code.
Output phase loss protection detected output phase loss during starting or running, stopping the drive. The manual lists no action for this code.
Input phase loss protection detected input phase loss, stopping the motor. The manual lists no action for this code.
Undervoltage protection triggered when intermediate DC circuit voltage drops below 200 Vdc (for 230 V series) or 400 Vdc (for 460 V series). The manual's first action is: “However, if data "4" or "5" are selected for …
Overvoltage detected while running at constant speed, causing the drive to stop if intermediate DC circuit voltage exceeds 400 Vdc (for 230 V series) or 800 Vdc (for 460 V series). The manual's first action is: “The d…
Overvoltage protection activated during deceleration when intermediate DC circuit voltage exceeds 400 Vdc (for 230 V series) or 800 Vdc (for 460 V series). The manual's first action is: “The drive stops the motor by d…
Overcurrent occurred while running at constant speed, caused by heavy loads or excessive torque boost settings. The manual's first action is: “Measure the motor current with a meter, and observe the current variations…
Overcurrent protection triggered due to ground faults at output terminals or during deceleration. The manual's first action is: “Remove the wires connected to the drive output terminals (U, V, and W) and perform a Meg…
Drive overloaded, indicating a condition where the drive is under excessive load. The manual's first action is: “OLL”
Motor overloaded, causing the drive to stop running to protect the motor during excessive load conditions. The manual's first action is: “OL1”
Braking resistor overheated, causing the drive to stop running when the built-in or external braking resistor overheats. The manual's first action is: “dbH”
Motor overheated, a PTC thermistor input stops the motor for motor protection. A PTC thermistor is connected between terminals [C1] and [1], and a 1-kΩ external resistor is connected between terminals [3] and [C1]. Th…
Heat sink overheated, stops the motor by detecting excess heat sink temperature in case of cooling fan failure or overload. The manual's first action is: “OH1”
Overvoltage protection during acceleration. The manual's first action is: “OU1, OU2 or OU3”