Detected Internal Module Errors
The red S and E LED indicators make it possible to evaluate the following error states:
oDetected internal module error (hardware error)
oOver/under temperature
oOver/under voltage
oIncompatible firmware version
The wiring issues described in the section Connection Examples are detected using the red I/O channel LED indicator.
NOTE: Errors that occur within the module are detected according to the requirements of the relevant standards and within the minimum safety-related response time specified in the technical data of the EcoStruxure Machine Expert - Safety software.
After an error within the module is detected, the module reverts back to a defined safe state.
NOTE: The error detection time specified in the technical data is relevant only for detecting external errors (for example wiring errors) in single-channel structures.
Recognizable errors are detected by the module within the error detection time.
If a module detects an error, then:
oThe channel LED indicator is lit constantly red
oThe SafeChannelOKxx signal is set to SAFEFALSE.
oThe SafeDigitalInputxx or SafeDigitalOutputxx signal is set to SAFEFALSE.
oAn entry is generated in the Safelogger of EcoStruxure Machine Expert.
For more information on wiring errors, refer to Connection Examples.
Other errors that are not detected by the module (or not detected on time) may lead to unintended machine states and therefore must be uncovered using additional measures.
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UNINTENDED EQUIPMENT OPERATION |
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Be sure that your risk assessment takes into account errors which are undetectable by the Safety I/O module, and that appropriate additional measures are implemented according to your risk assessment. |
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Failure to follow these instructions can result in death, serious injury, or equipment damage. |
For more information on errors that are, and are not, detected by the Safety I/O module, refer to the Error Detection tables found in the Connection Examples.
Make all necessary repairs in a timely manner if an error occurs because subsequent errors could create a hazardous situation.
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UNINTENDED EQUIPMENT OPERATION |
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oImmediately replace any and all modules that indicate that they are in an inoperable state. oEnsure that the effect on un-repaired equipment is taken into account in your risk assessment. oMake all necessary repairs to equipment before re-starting, or continuing service of, your machine. |
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Failure to follow these instructions can result in death, serious injury, or equipment damage. |
