SEW eurodrive Electric Motor DRN90S4

Before startup, ensure the following conditions are met

During startup, ensure the following conditions are met

8.2 Preliminary work for motor and brake maintenance

Isolate the motor and brake from the power supply

Remove the EV1. incremental encoder / AV1H absolute encoder

Remove the protective canopy [361]

Remove forced cooling fan if fitted

Unscrew the screw [366] from the adapter flange and remove the cover plate [369]

Unscrew the clamping hub connection of the coupling

Loosen the retaining screws [232] and turn the conical spring washers [251] outwards

Remove the encoder [220] together with the coupling [233]

8.1 Inspection and maintenance intervals

Isolate the motor and brake from the supply before starting work, safeguarding them against unintentional power-up

8.3 Inspection / maintenance on the motor

Remove the forced cooling fan and encoder, if installed

Remove flange or fan guard, fan

Remove the hex head bolt from the drive end bearing end shield and the non-drive end bearing end shield, release the stator from the drive end bearing end shield

For motors with BM/BMG brake: open the terminal box cover, unfasten the brake cable from the rectifier; push the non-drive end bearing end shield and the brake off the stator and carefully lift them off

For motors with BMG02, BR03 brake: remove the complete brake with the releasing lever

Inspection / maintenance of the BMG61/122 brake

Ensure the following conditions are met before maintenance

BMG61/122 brake without encoder mounting — set the working air gap

Isolate the motor and brake from the supply, safeguarding them against unintentional power-up

Remove the forced cooling fan, if installed, and the flange cover or fan guard [27]

Push the rubber sealing collar aside [5], releasing the clamping strap to do this if necessary, and extract the abraded matter

Measure the brake discs [6], [10] and check if the brake disc is < 12 mm

Loosen the setting sleeve [9] by turning it towards the bearing end shield

8.1 Inspection and maintenance intervals

Determine the inspection interval based on external factors

Renew the anticorrosion coating if necessary