Beckhoff EL2912 TwinSAFE

When LED Diag 1 is off and LED Diag 2 flashes with code 1 (400ms ON / 400ms OFF), it indicates that the internal supply voltage for microcontroller μC1 has exceeded its maximum permissible limit. This environment-related error signals an overvoltage condition, potentially risking damage to the μC1 or compromising its safety functions due to electrical stress.

When LED Diag 1 is off and LED Diag 2 flashes with code 10 (400ms ON / 400ms OFF), it indicates a general environment error. This code signifies an unspecified fault related to the module's operating conditions (e.g., power supply, ambient temperature, humidity) that does not fall under more specific environment error categories. Further investigation of external environmental factors or diagnostic history (CoE objects F984 hex, F985 hex) may be required to pinpoint the issue.

When LED Diag 1 is off and LED Diag 2 flashes with code 2 (400ms ON / 400ms OFF), it indicates that the internal supply voltage for microcontroller μC1 has fallen below its minimum permissible value. This environment error suggests insufficient power delivery, which could lead to erratic behavior, component instability, or a complete shutdown of safety functions for μC1.

When LED Diag 1 is off and LED Diag 2 flashes with code 3 (400ms ON / 400ms OFF), it indicates that the internal supply voltage for microcontroller μC2 has exceeded its maximum permissible limit. This environment error suggests an overvoltage condition, carrying a risk of damage to μC2 or other internal components due to excessive electrical input.

When LED Diag 1 is off and LED Diag 2 flashes with code 4 (400ms ON / 400ms OFF), it indicates that the internal supply voltage for microcontroller μC2 has fallen below its minimum permissible value. This environment error can lead to unreliable operation or unexpected behavior of the TwinSAFE component due to insufficient power for μC2, potentially impacting safety integrity.

When LED Diag 1 is off and LED Diag 2 flashes with code 5 (400ms ON / 400ms OFF), it indicates that the TwinSAFE component's internal temperature has exceeded its maximum safe operating limit. This environment error signifies an overheating condition, which can cause thermal stress on internal components, potentially leading to reduced lifespan, immediate shutdown, or component damage if not addressed.

When LED Diag 1 is off and LED Diag 2 flashes with code 6 (400ms ON / 400ms OFF), it indicates that the TwinSAFE component's internal temperature has fallen below its minimum safe operating limit. This environment error suggests operation in an excessively cold environment, which might affect component performance, material properties, or lead to condensation issues if cold-soaked.

When LED Diag 1 is off and LED Diag 2 flashes with code 7 (400ms ON / 400ms OFF), it indicates that the temperature difference between microcontrollers μC1 and μC2 has exceeded a valid threshold. This environment error could point to uneven cooling, a sensor malfunction, or an internal fault causing one μC to heat differently than the other, potentially compromising the integrity of dual-channel temperature monitoring.

When LED Diag 1 is lit and LED Diag 2 flickers (50 ms ON / 50 ms OFF), it indicates an error specifically within an input or output module. This suggests a malfunction at the physical interface where signals are read or controlled. The specific input or output module affected is not specified by the flickering pattern alone, requiring further investigation.