Safety instructions General safety and application instructions for Lenze motors 3 3.2 Installation Ensure an even surface, solid foot/flange mounting and exact alignment if a direct clutch is connected. Avoid resonances with the rotational frequency and double mains frequency which may be caused by the assembly. Turn rotor by hand, listen for unusual slipping noises. Check the direction of rotation when the clutch is not active (observe section ”Electrical connection”). Use appropriate means to mount or remove belt pulleys and clutches (heating) and cover them with a touch guard. Avoid impermissible belt tensions. The machines are half-key balanced.
The clutch must be half-key balanced, too. The visible jutting out part of the key must be removed. Ifrequired,providepipeconnections.Designswithshaftendatbottommust beprotectedwithacoverwhichpreventstheingressofforeignparticlesinto the fan. Free circulation of the cooling air must be ensured. The exhaust air - also the exhaust air of other machines next to the drive system - must not be taken in immediately. Electrical connection All operations must only be carried out by qualified and skilled personnel on the low-voltage machine at standstill and deenergised and provided with a safe guard to prevent an unintentional restart.This also applies to auxiliary circuits (e. g.
brake, encoder, blower). Check safe isolation from supply! IfthetolerancesspecifiedinEN 60034-1;IEC 34(VDE 0530-1)- voltage±5 %, frequency ±2 %, waveform, symmetry - are exceeded, more heat will be generated and the electromagnetic compatibility will be affected. Observe the data on the nameplate, operating notes, and the connection diagram in the terminal box. The connection must ensure a continuous and safe electrical supply (no loose wire ends); use appropriate cable terminals. The connection to the PE conductor must be safe. The plug-in connectors must be bolt tightly (to stop).
The clearances between blank, live parts and to earth must not fall below 8 mm at U r ≤ 550 V, 10 mm at U r ≤ 725 V, 14 mm at U r ≤ 1000 V. The terminal box must be free of foreign particles, dirt and moisture. All unused cable entries and the box itself must be sealed against dust and water. 3.2-2 EDS94SPP101 EN 1.0-12/2005