Siemens SIMATIC IPC277D Operating Instructions Manual

Also see for INOX PRO SIMATIC IPC277D: Service manual Operating manual Quick install guide

Contents

Installing and connecting the device3.3 Connecting the deviceSIMATIC IPC277D44 Operating Instructions, 12/2016, A5E03409486-AE3.3.2 Connecting the protective earthA connected protective conductor conducts hazardous electric charges from the metalenclosure. The current that flows through the protective conductor in such a fault scenario,triggers an upstream circuit breaker that disconnects the device from the power supply.The protective conductor also discharges any interference transmitted from external powersupply cables, signal cables or cables to the I/O devices. The connection for the protectiveearth is labeled with the following symbol:Requirement● T20 screwdriver● Cable lug for M4● Protective earth with a minimum cross-section of 2.5 mm2ProcedureClamp the cable lug onto the protective earth.Firmly attach the cable lug to the protectiveconductor connection on the device using theM4 thread (see part labeled).Connect the protective conductor to the pro-tective conductor connection of the cabinet orthe plant in which the device is installed.