User manual 09/2009 - Schneider Electric

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User manual 09/2009 - Schneider Electric

Operating AssistanceIndication on Internal Fault of the Micrologic Trip UnitScreenCauseA serious internal fault has occurred in the Micrologic trip unit. Thisfault trips the circuit breaker.CAUTIONRISK OF UNPROTECTED EQUIPMENTReplace the Micrologic trip unit immediately.Failure to follow these instructions can result in injury or equipment damage.Acknowledging the St0P ScreenOKThe St0P screen cannot be acknowledged using the key:• It is no longer possible to close the Compact NSX circuit breaker• The measurements and settings can no longer be accessed with the Mode key• The St0P screen becomes the main screenIndication of Downloading the FirmwareScreenCauseThe Micrologic trip unit is waiting for or in the process ofdownloading the firmware using the RSU software (duration: 3minutes approx).• The trip unit protections are still operational.• Access to measurements and settings (via the Micrologic tripunit dials or keypad or via the communication option) isinterrupted.If the boot message persists after several download attempts,replace the Micrologic trip unit.For more details on delivery of and downloading the firmware, see Parameter Setting Using the RSUSoftware, page 118 and the RSU Software Online Help.LV434104 09/2009 137

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