R&M Materials Handling VARIABLE SPEED CONTROLS ControlMaster NXT Service Manual - Manual (Page 37)

R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
P.: (937) 328-5100
FAX: (937) 325-5319
37/53 R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
6.2 Checks before the first run
1 Check that the main power is switched off.
2 When installing a new unit, disconnect the motor (U / T1, V /
T2, W / T3) cables to prevent damage to the frequency
converter.
Measure the insulation resistance of the motor windings
(each phase to ground). Insulation resistance requirement for
new motor:
Cold motor (10..40 °C): ≥ 5 M Ω
Warm motor (40 °C or more): ≥ 1 M Ω
If insulation resistance is less that requirement the motor
shall be dried.
3 Reconnect the motor cables and check the thightness of the
other cables.
4 Check that the external connections and selected control
parameters (switches) are set according to the application.