Nidec Digitax ST Series Installation Manual

Nidec Digitax ST Series Installation Manual Manual pdf 27 page image

Digitax ST Installation Guide 27Issue: 7Safety Information Introduction Mechanical Installation Electrical Installation UL Listing Information4.2 Power terminal connectionsFigure 4-1 Power terminal connections* When using a 200 V drive on a single phase supply, the live and neutral conductors canbe connected to any of the AC connections on the drive.** This is not required if the optional internal braking resistor is used.L1 * L2 *L2L1 L3/NU V WOptional EMCfilterOptionalline reactorFusesL3 *Mainssupply SupplygroundACconnections_ +DC DCHigh current-DC connections+ _Low voltageDC (48V)DST12XX = 200 to 240V 10%DST14XX = 380 to 480V 10%±±Connectors specification:Maximum size of power cable= 4.0mm (10AWG)Torque setting = 1 N m2PEIt is essential that the brakingresistor be protected againstoverload caused by a failure of thebrake control. Unless the resistorhas in-built protection, a circuit likethose shown in Figure 4-1 shouldbe used, where the thermalprotection device disconnects theAC supply to the drive. Do not useAC relay contacts directly in serieswith the braking resistor circuit,because it carries DC.WARNINGTerminals Torque settingPower terminals 1.0 N m(12.1 lb in)Control terminals 0.2 N m(1.7 lb in)Status relayterminals0.5 N m(4.5 lb in)Ground terminalscrews4 N m(35 lb in)Small groundterminal screws2 Nm(17.7 Ib in)* *Torque tolerance = 10%NOTE