8.8.3
Avoidance of damage to roller bearings during stoppages
Extended stoppages at the identical or almost identical resting position of the rotor in the roller
bearings can result in damage, such as brinelling or corrosion.
● During stoppages, regularly start up the machine for a brief period once a month. As a
minimum, turn the rotor several times.
If you have uncoupled the machine from the driven machine and secured the rotor with a
rotor shipping brace, then remove this before turning the rotor over or starting up the
machine.
Make sure that the resting position of the rotor after the rotor has been turned over is
different from its previous position. Use the fitted key or the coupling halves as reference
markers.
● During recommissioning, refer to the information in Chapter "Commissioning".
See also
Commissioning (Page 71)
Greasing the roller bearings prior to commissioning (Page 73)
8.8.4
Measuring the insulation resistance after an extended stoppage
Measuring the insulation resistance and polarization index (PI) provides information on the
condition of the machine. It is therefore important to check the insulation resistance and the
polarization index at the following times:
● Before starting up a machine for the first time
● After an extended period in storage or downtime
● Within the scope of maintenance work
The following information is provided regarding the state of the winding insulation:
● Is the winding head insulation conductively contaminated?
● Has the winding insulation absorbed moisture?
As such, you can determine whether the machine needs commissioning or any necessary
measures such as cleaning and/or drying the winding:
● Can the machine be put into operation?
● Must the windings be cleaned or dried?
Detailed information on testing and the limit values can be found here:
"Testing the insulation resistance and polarization index" (Page 41)
Operation
8.8 Stoppages
SIMOTICS HV M 1RN76308PR900CG0-Z
Operating Instructions 07/2018
81
Содержание SIMOTICS HV M
Страница 2: ...03 07 2018 13 28 V3 00 ...
Страница 22: ...Description SIMOTICS HV M 1RN76308PR900CG0 Z 22 Operating Instructions 07 2018 ...
Страница 58: ...Assembly 5 5 Complete the installation work SIMOTICS HV M 1RN76308PR900CG0 Z 58 Operating Instructions 07 2018 ...
Страница 86: ...Operation 8 11 Faults SIMOTICS HV M 1RN76308PR900CG0 Z 86 Operating Instructions 07 2018 ...
Страница 108: ...Maintenance 9 2 Corrective Maintenance SIMOTICS HV M 1RN76308PR900CG0 Z 108 Operating Instructions 07 2018 ...
Страница 120: ...Disposal 11 4 Disposal of components SIMOTICS HV M 1RN76308PR900CG0 Z 120 Operating Instructions 07 2018 ...
Страница 122: ...Service and Support SIMOTICS HV M 1RN76308PR900CG0 Z 122 Operating Instructions 07 2018 ...
Страница 128: ...Quality documents SIMOTICS HV M 1RN76308PR900CG0 Z 128 Operating Instructions 07 2018 ...
Страница 130: ...Additional documents SIMOTICS HV M 1RN76308PR900CG0 Z 130 Operating Instructions 07 2018 ...
Страница 135: ......