Switching On Again After An Emergency Switching-Off; Stoppages; Avoidance Of Damage To Roller Bearings During Stoppages - Siemens 1PH818 Operating Instructions & Installation Instructions

8.6

Switching on again after an emergency switching-off

● Check the machine before recommissioning the driven machine after an Emergency Off.
● Eliminate all the causes that have led to the emergency off
8.7

Stoppages

The stoppage is a shutdown for a period of time, during which the machine is stopped but
remains at the location of use.
Under normal ambient conditions, e. g. the stopped machine is not exposed to any vibration,
no increased level of corrosion, etc. in general, the following measures are necessary during
stoppages.
Measures for machines ready to operate during longer non-operational periods
● For longer periods when the machine is not being used, either energize it at regular intervals
● Please refer to the section"Switching on" (Page 88) before switching on to recommission
8.7.1

Avoidance of damage to roller bearings during stoppages

Extended stoppages at the identical or almost identical resting position of the roller bearings
can lead to damage such as brinelling or formation of corrosion.
● During stoppages, regularly start the machine up for a brief period once a month, or at least
● During re-commissioning, refer to the information in the "Commissioning" section.
SIMOTICS M-1PH8 1PH818., 1PH822.
Operating Instructions 07/2016
(roughly once a month), or at least spin the rotor.
the motor.
NOTICE
Damage due to improper storage
The machine can be damaged if it is not stored properly. If the motor is out of service for
extended periods of time, implement suitable anti-corrosion, preservation, and drying
measures.
When recommissioning the motor after a long period out of service, carry out the measures
recommended in the chapter entitled "Commissioning (Page 83)".
turn the rotor over 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 the machine
up.
Make sure that the resting position of the roller bearings after the rotor has been turned
over is different from what it previously had been. Use the fitted key or the coupling halves
as reference markers.
Operation
8.7 Stoppages
95