User Manual High Performance AC Drive

1-6 Installation/WiringFigure 1.1 Typical GroundingR(L1)S(L2)T(L3)PEU(T1)V(T2)W(T3)DC DC+ –BR1BR2RequiredInput FusingRequired BranchCircuit DisconnectShield Termination - SHLDThe Shield terminal (see Figure 1.3 on page 1-14) provides a groundingpoint for the motor cable shield. It must be connected to an earth ground bya separate continuous lead. The motor cable shield should be connected tothis terminal on the drive (drive end) and the motor frame (motor end). Usea shield terminating or EMI clamp to connect shield to this terminal.RFI Filter GroundingUsing an optional RFI filter may result in relatively high ground leakagecurrents. Therefore, the filter must only be used in installations withgrounded AC supply systems and be permanently installed and solidlygrounded (bonded) to the building power distribution ground. Ensure thatthe incoming supply neutral is solidly connected (bonded) to the samebuilding power distribution ground. Grounding must not rely on flexiblecables and should not include any form of plug or socket that would permitinadvertent disconnection. Some local codes may require redundant groundconnections. The integrity of all connections should be periodicallychecked. Refer to the instructions supplied with the filter.Fuses and Circuit BreakersThe PowerFlex 700S can be installed with either input fuses or an inputcircuit breaker. Local/national electrical codes may determine additionalrequirements for these installations. Refer to Appendix A for recommendedfuses/circuit breakers.!ATTENTION: The PowerFlex 700S does not provide inputpower short circuit protection. Specifications for therecommended fuse or circuit breaker to provide drive input powerprotection against short circuits are provided in Appendix A.