Beckhoff EL6900 Operating Instructions

16 fault codes documented

0005 hex

Maximum Temperature Exceeded

This diagnostic code (found within FA00:03 Temperature error) indicates that the internal temperature of the device has exceeded its maximum permissible operating limit. This condition can affect the primary and secondary microcontrollers (μC1, μC2) and may lead to component degradation or terminal shutdown.

0006 hex

Temperature Fell Below Minimum

This diagnostic code (found within FA00:03 Temperature error) indicates that the internal temperature of the device has dropped below its minimum permissible operating limit. This can affect the functionality of the primary and secondary microcontrollers (μC1, μC2) and may lead to unreliable operation or terminal shutdown.

0007 hex

Temperature Difference Exceeded

This diagnostic code (found within FA00:03 Temperature error) indicates that the temperature difference between the internal measuring points (e.g., Temperature Primary MC and Temperature Secondary MC, FA80:01 and FA80:02) has exceeded its permissible threshold. A significant temperature differential can suggest localized heating or cooling issues within the terminal, potentially leading to component stress or operational instability.

0101 hex

Max Supply Voltage μC1 Exceeded

This diagnostic code (found within FA00:03 Supply error) signifies that the supply voltage to the primary microcontroller (μC1) has exceeded its maximum permissible limit. Overvoltage can cause immediate damage to the microcontroller, leading to erratic behavior or complete failure of the terminal's safety functions.

0102 hex

Max Supply Voltage μC2 Exceeded

This diagnostic code (found within FA00:03 Supply error) indicates that the supply voltage to the secondary microcontroller (μC2) has exceeded its maximum permissible limit. Similar to μC1 overvoltage, this can result in damage to the microcontroller, compromising the terminal's safety integrity and overall operation.

0103 hex

Min Supply Voltage μC1 Not Met

This diagnostic code (found within FA00:03 Supply error) signifies that the supply voltage to the primary microcontroller (μC1) has fallen below its minimum permissible limit. Undervoltage can lead to unstable operation, incorrect processing, or unexpected shutdowns of the terminal, affecting its safety functions.

0104 hex

Min Supply Voltage μC2 Not Met

This diagnostic code (found within FA00:03 Supply error) indicates that the supply voltage to the secondary microcontroller (μC2) has fallen below its minimum permissible limit. Similar to μC1 undervoltage, this condition can cause unstable operation, data corruption, or unexpected shutdowns, impairing the terminal's safety and reliability.

Diag3:lit, Diag4:flashing

Internal Terminal Error (μC1)

This LED combination (Diag 3 lit, Diag 4 flashing) indicates an internal error related to microcontroller 1 (μC1) of the terminal. This is a global fault, leading to the shutdown of the terminal. Such errors typically necessitate inspection by the manufacturer.

Diag3:lit, Diag4:off

Internal Terminal Error (μC2)

This LED combination (Diag 3 lit, Diag 4 off) indicates an internal error related to microcontroller 2 (μC2) of the terminal. This is a global fault, leading to the shutdown of the terminal. Similar to μC1 errors, these faults typically require inspection by the manufacturer.

Diag3:off, Diag4:1_pulse

Function Block Error

This diagnostic flashing code (Diag 3 off, Diag 4: 1 uniform flash pulse) indicates a function block error within one of the TwinSAFE groups. This means that a component or logic block in the safety program is not operating as expected, potentially due to incorrect parameterization, invalid inputs, or an internal logic issue.

Diag3:off, Diag4:2_pulses

Communication Error

This diagnostic flashing code (Diag 3 off, Diag 4: 2 flash pulses with longer pause) indicates a communication error within one of the TwinSAFE groups. This suggests issues with data exchange between safety devices on the EtherCAT network, potentially due to faulty wiring, incorrect addressing, or timing discrepancies.

Diag3:off, Diag4:3_pulses

Function Block and Communication Error

This diagnostic flashing code (Diag 3 off, Diag 4: 3 flash pulses with longer pause) signifies both a function block error and a communication error within one of the TwinSAFE groups. This combined fault suggests issues with both the internal logic processing and the external data exchange within the safety system, indicating a complex problem requiring thorough investigation of both aspects.

Diag3:off, Diag4:steady_lit

Supply Voltage or Internal Temperature Out of Range

This diagnostic LED state (Diag 3 off, Diag 4 steadily lit) indicates that either the supply voltage to the terminal or its internal temperature is outside the permissible operating range. More detailed information can be found by examining the diagnostic object FA00hex. This condition can lead to system instability, unreliable operation, or terminal shutdown.

F100:01 (7)

Severe Fault (Safety Project State)

This code, corresponding to State '7' of CoE object F100:01 (Safety Project State), signifies that the EL6900 has switched off due to a severe internal fault. In this state, a safety project cannot be loaded or started. This indicates a critical error in the safety logic execution or hardware that has led to a fail-safe shutdown.

F100:09

Input Size Mismatch

This CoE object indicates that the length of the input data does not match the input data length calculated from the safety logic. This discrepancy points to an incorrect configuration of the EtherCAT master or the safety project regarding the expected input data size for the EL6900, which can prevent the safety logic from running correctly.

F100:0A

Output Size Mismatch

This CoE object indicates that the length of the output data does not match the output data length calculated from the safety logic. This signals a configuration error between the EtherCAT master and the safety project concerning the expected output data size from the EL6900, which can lead to improper control or safety functions.