Nidec Digitax ST Series Installation Manual

Nidec Digitax ST Series Installation Manual Manual pdf 23 page image

Digitax ST Installation Guide 23Issue: 7Mechanical Installation Introduction Mechanical Installation Electrical Installation UL Listing Information3.5 Terminal torque settingsTable 3-1 Torque settings*Torque tolerance = 10 %Table 3-2 Plug-in terminal block maximum cable sizes3.6 Routine maintenanceThe drive should be installed in a cool, clean, well ventilated location. Contact ofmoisture and dust with the drive should be prevented.Regular checks of the following should be carried out to ensure drive / installationreliability are maximized:Terminals Torque setting*Power terminals 1.0 N m (12.1 lb in)Control terminals 0.2 N m (1.7 lb in)Status relay terminals 0.5 N m (4.5 lb in)Ground terminals 4 N m (35 lb in)Small ground terminal screws 2 N m (17.7 lb in)Model size Terminal block description Max cable sizeAll 11 way control connectors 1.5 mm 2 (16 AWG)All 2 way relay connector 2.5 mm 2 (12 AWG)EnvironmentAmbienttemperature Ensure the enclosure temperature remains at or below maximum specifiedDust Ensure the drive remains dust free – check that the heatsink and drive fan arenot gathering dust. The lifetime of the fan is reduced in dusty environments.Moisture Ensure the drive enclosure shows no signs of condensationEnclosureEnclosure doorfilters Ensure filters are not blocked and that air is free to flowElectricalScrewconnections Ensure all screw terminals remain tightCrimp terminals Ensure all crimp terminals remains tight – check for any discoloration whichcould indicate overheatingCables Check all cables for signs of damage