Mitsubishi Electric FR-A800 Variable Speed Drive (Separated Converter)

46 fault codes documented

ALM4

Output Short-Circuit Detection

This signal is output when an output short-circuit is detected, specifically when an E.GF (Output side earth (ground) fault overcurrent) occurs while Pr.249 is set to '2'. This indicates a severe fault on the output side that has triggered a restricted reset condition for earth faults.

E. 1

Option Fault

This fault indicates a general issue with an installed option card or module in the FR-A800 inverter. This could be a communication card, I/O expansion card, or feedback card.

E. 13

Internal Circuit Fault

This fault indicates a general internal circuit malfunction within the FR-A800 inverter. This is a broad category that suggests a hardware or firmware issue not covered by more specific fault codes.

E. 2

Option Fault

This fault indicates a general issue with an installed option card or module in the FR-A800 inverter. This could be a communication card, I/O expansion card, or feedback card.

E. 3

Option Fault

This fault indicates a general issue with an installed option card or module in the FR-A800 inverter. This could be a communication card, I/O expansion card, or feedback card.

E. 5

CPU Fault

This fault indicates a malfunction of the FR-A800's central processing unit (CPU). A CPU fault can cause the inverter to stop functioning entirely or behave erratically, preventing normal operation and control.

E. 7

CPU Fault

This fault indicates a malfunction of the FR-A800's central processing unit (CPU). A CPU fault can cause the inverter to stop functioning entirely or behave erratically, preventing normal operation and control.

E.11

Opposite Rotation Deceleration Fault

This fault indicates an issue during the process of decelerating the motor to a stop or reversing its direction, where the FR-A800 detects unexpected rotation or an inability to control the deceleration as commanded.

E.13

Internal circuit fault

This code, along with E.5 to E.7, indicates a specific internal circuit fault within the FR-A800/A800 Plus Series drive. It implies a hardware or firmware issue that causes an unexpected internal state, leading to a protective stop.

E.5 to E.7

Internal circuit fault

These codes (E.5, E.6, E.7) indicate general internal circuit faults within the FR-A800/A800 Plus Series drive. They typically point to unexpected conditions within the drive's control logic or hardware that do not fall under more specific fault categories.

E.AIE

Analog Input Fault

This fault indicates an issue with the analog input signal received by the FR-A800 inverter. This can affect speed reference, feedback, or other control signals dependent on analog input.

E.CDO

Abnormal Output Current Detection

This fault indicates that the FR-A800 inverter has detected an abnormal current in its output circuit. This can signify a problem with the motor, motor wiring, or the inverter's output stage.

E.CPU

CPU fault

This fault indicates an internal error within the FR-A800/A800 Plus Series drive's central processing unit. This is a critical fault for controlling all drive operations and typically points to a severe internal hardware or firmware issue.

E.CTE

Operation panel power supply short circuit

This fault indicates a short circuit in the power supply circuit for the operation panel (FR-DU08) or parameter unit (FR-PU07) connected to the PU connector of the FR-A800/A800 Plus Series drive. This prevents proper operation panel functionality.

E.ECT

Signal loss detection

This fault indicates that a critical input signal required for the FR-A800/A800 Plus Series drive's operation has been lost or is not present. This can relate to control signals or feedback, leading to the drive's protective shutoff.

E.EF

External Fault During Output Operation

This fault indicates that an external protective device or system has detected an anomaly and triggered an input to the FR-A800 inverter, causing it to trip while it was providing output to the motor.

E.EHR

Ethernet Communication Fault

This fault indicates an error in the Ethernet communication between the FR-A800 inverter and an external control system or device. This will prevent remote control, monitoring, and data exchange over Ethernet.

E.EP

Encoder phase fault

This fault indicates an issue with the phase sequence or signal integrity of the encoder feedback connected to the FR-A800/A800 Plus Series drive. It signifies that the drive cannot properly interpret the motor's position or speed from the encoder, often due to incorrect wiring or a damaged encoder.

E.GF

Output Side Earth (Ground) Fault Overcurrent

This protective function detects an earth (ground) fault on the inverter's output side. If Pr.249 is set to '1' or '2' and an earth (ground) fault is detected at start, the output is shut off. If Pr.249 is set to '2', the reset method is restricted, preventing damage from repeated reset operations by methods other than turning off the control circuit power.

E.LCI

4 mA Input Fault

This fault specifically indicates an issue with a 4-20mA analog current input signal. The fault typically triggers if the input current drops below 4mA (e.g., 0mA), indicating a broken wire or sensor failure.

E.MB1

Brake Sequence Fault

This fault indicates an error in the FR-A800's brake sequence control. This typically involves the timing and operation of an external mechanical brake, which is critical for holding the load and safe operation.

E.MB1 to E.MB7

Brake sequence fault

These faults indicate an issue within the brake control sequence of the FR-A800/A800 Plus Series drive. This could relate to the operation of an external mechanical brake, its feedback, or the drive's internal brake control logic, preventing safe and controlled stopping.

E.MB2

Brake Sequence Fault

This fault indicates an error in the FR-A800's brake sequence control. This typically involves the timing and operation of an external mechanical brake, which is critical for holding the load and safe operation.

E.MB3

Brake Sequence Fault

This fault indicates an error in the FR-A800's brake sequence control. This typically involves the timing and operation of an external mechanical brake, which is critical for holding the load and safe operation.

E.MB4

Brake Sequence Fault

This fault indicates an error in the FR-A800's brake sequence control. This typically involves the timing and operation of an external mechanical brake, which is critical for holding the load and safe operation.

E.MB5

Brake Sequence Fault

This fault indicates an error in the FR-A800's brake sequence control. This typically involves the timing and operation of an external mechanical brake, which is critical for holding the load and safe operation.

E.MB6

Brake Sequence Fault

This fault indicates an error in the FR-A800's brake sequence control. This typically involves the timing and operation of an external mechanical brake, which is critical for holding the load and safe operation.

E.MB7

Brake Sequence Fault

This fault indicates an error in the FR-A800's brake sequence control. This typically involves the timing and operation of an external mechanical brake, which is critical for holding the load and safe operation.

E.MP

Magnetic pole position unknown

This fault occurs in PM (Permanent Magnet) motor control modes with the FR-A800/A800 Plus Series drive, indicating that the drive is unable to determine the initial magnetic pole position of the motor. This is crucial for starting and controlling PM motors effectively.

E.OD

Excessive position fault

This fault occurs when the actual position deviation in the FR-A800/A800 Plus Series drive exceeds the permitted threshold, typically in applications requiring precise position control with a feedback device. This indicates a failure to maintain the commanded position.

E.OP1 to E.OP3

Communication option fault

These faults indicate an issue with one of the communication option cards installed in the FR-A800/A800 Plus Series drive (E.OP1 for connector 1, E.OP2 for connector 2, E.OP3 for connector 3). The drive detects a problem with the option, leading to a protective shutoff.

E.OPT

Option fault

This fault indicates that the FR-A800/A800 Plus Series drive has detected an error with an installed plug-in option or communication option. The drive's protective function is activated, leading to an output shutoff to prevent further issues.

E.OS

Overspeed occurrence

This fault indicates that the motor speed has exceeded the programmed overspeed detection level in the FR-A800/A800 Plus Series drive. This protective function prevents uncontrolled acceleration or runaway conditions of the motor.

E.OSD

Speed deviation excess detection

This fault indicates that the motor speed deviation has exceeded a permissible limit as monitored by the FR-A800/A800 Plus Series drive. This suggests a significant discrepancy between the commanded speed and the actual motor speed, typically in applications requiring precise speed control.

E.P24

24 VDC power fault

This fault indicates a problem with the internal 24 VDC power supply of the FR-A800/A800 Plus Series drive or an issue with an external 24 VDC power supply connected to terminal +24, which powers the control circuit. This can impact the drive's control functions.

E.PBT

Internal Circuit Fault

This fault indicates a general internal circuit malfunction within the FR-A800 inverter. This is a broad category that suggests a hardware or firmware issue not covered by more specific fault codes.

E.PCH

Pre-charge Fault

This fault occurs during the pre-charge phase of the FR-A800 inverter, which is the initial charging of the DC bus capacitors through resistors to limit inrush current. A fault here indicates an issue with this circuit.

E.PE

Parameter storage device fault (control circuit board)

This fault indicates an issue with the non-volatile memory on the control circuit board of the FR-A800/A800 Plus Series drive, where drive parameters are stored. This can lead to loss of settings or an inability to store new parameters, affecting drive operation.

E.PE2

Parameter storage device fault (main circuit board)

This fault indicates a problem with the non-volatile memory on the main circuit board of the FR-A800/A800 Plus Series drive, where parameters related to the main power circuit are stored. This can lead to persistent issues with the drive's power stage operation.

E.PE6

Internal Storage Device Fault

This protective function activates if data corruption occurs in the FR-A800 inverter's internal storage device or if data writing fails, typically due to power-OFF during parameter operations. The fault can prevent normal operation and requires specific corrective actions depending on the faulty area indicated by Pr.890.

E.PID

PID Signal Fault

This fault indicates an issue with the feedback signal or control in the FR-A800's internal PID control loop. This prevents the inverter from accurately regulating a process variable based on the PID controller.

E.PUE

PU Disconnection

This fault indicates that the FR-A800's Operation Panel (PU) is disconnected from the inverter. This can prevent local control and monitoring of the drive.

E.RET

Retry count excess

This fault indicates that the FR-A800/A800 Plus Series drive has attempted to clear a previous fault and restart operation multiple times, as configured by auto-restart parameters, but has failed to do so within the allowed retry count. This points to a persistent underlying issue.

E.SAF

Safety circuit fault

This fault indicates an issue with the FR-A800/A800 Plus Series drive's internal safety stop function (safety circuit). The drive enters a safe state and output is shut off, as required by safety standards, to prevent hazardous conditions.

E.USB

USB Communication Fault

This fault indicates an error in the USB communication with the FR-A800 inverter. This typically affects connectivity with tools like FR Configurator2 for parameter setup and monitoring.

SA

Safety circuit warning

This warning is displayed when a condition is detected in the internal safety circuit of the FR-A800/A800 Plus Series drive. It often indicates that the safety inputs (S1, S2) are not in the expected ON state for operation, or there's an internal fault, which leads to output shutoff (Safe state).