8.2 Functions................................................................................................................................78
8.2.1 Monitoring functions and protective functions........................................................................78
8.2.1.1 Insulation monitoring..............................................................................................................78
8.2.1.2 Tripping of the circuit-breaker in case of undervoltage..........................................................79
8.3 Fault and system messages..................................................................................................80
8.3.1 Indicating and rectifying faults................................................................................................80
8.3.2 Diagnostics via LEDs.............................................................................................................81
8.3.2.1 LEDs of the Sirius safety relay...............................................................................................81
9 Maintenance...............................................................................................................................................83
9.1 Safety instructions for maintenance.......................................................................................83
9.2 Grounding the system............................................................................................................85
9.2.1 Grounding using the grounding harness................................................................................85
9.3 Opening the device................................................................................................................86
9.4 Preventive maintenance.........................................................................................................86
9.4.1 Inspection...............................................................................................................................86
9.4.2 Checklist for preventive maintenance work............................................................................87
9.4.3 Visual inspections..................................................................................................................87
9.4.3.1 Equipment for visual inspections............................................................................................87
9.4.3.2 Checking hoisting solenoids and security bolts......................................................................88
9.4.3.3 Checking the plug connections..............................................................................................88
9.4.3.4 Checking the cable and screw terminals................................................................................88
9.5 Maintenance...........................................................................................................................88
9.5.1 Replacing the back-up battery of the AOP30 operator panel ................................................88
9.5.2 Loading operator panel firmware, parameter and signal descriptions...................................90
9.6 Cleaning.................................................................................................................................91
9.6.1 Removing dust deposits.........................................................................................................91
9.6.2 Cleaning aluminum parts.......................................................................................................91
9.7 Repair.....................................................................................................................................92
9.7.1 Reference to the safety instructions section..........................................................................92
9.7.2 Components that can be replaced.........................................................................................93
9.7.3 Torques..................................................................................................................................94
9.7.4 Replacing the AOP30 operator panel....................................................................................95
9.7.5 Replacing the CompactFlash card.........................................................................................96
10 Spare parts.................................................................................................................................................97
11 Disposal......................................................................................................................................................99
11.1 Disposing of packaging material............................................................................................99
11.2 Removing device components and old devices.....................................................................99
A Service & Support.....................................................................................................................................101
A.1 Siemens Industry Online Support........................................................................................101
B Technical data and drawings....................................................................................................................103
B.1 Standards and regulations...................................................................................................103
B.2 Environmental conditions.....................................................................................................103
Table of contents
SINAMICS SM120 6SL38715
8 Operating Instructions 07/2015
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