Siemens SIMOTICCS A 1FU9, Руководство по эксплуатации, Страница: 77 / 126

7.2.7 Setpoint values for monitoring the bearing temperature
Prior to commissioning
If the machine is equipped with bearing thermometers, set the temperature value for
disconnection on the monitoring equipment before the first machine run.
Table 7-1 Set values for monitoring the bearing temperatures before commissioning
Set value Temperature
Alarm 115 °C
Shutting down 120 °C
Normal operation
Determine the maximum operating temperature of the bearings T
operation
taking into account the
temperature, bearing load and influences of the plant on the motor in °C. Set the values for
shutdown and warning corresponding to the operating temperature T
op
.
Table 7-2 Set values for monitoring the bearing temperatures
Set value Temperature
Alarm T
operation
+ 5 K ≤ 115 °C
Shutting down T
operation
+ 10 K ≤ 120 °C
7.2.8 Dangerous voltage when the rotor rotates
WARNING
Dangerous voltage when the rotor rotates
There are dangerous voltages at the terminals while the machine rotor rotates and immediately
afterwards.
You must observe the following safety instructions to prevent death, injury or material damage:
• Do not touch the terminals while the rotor is rotating and immediately afterwards.
• To discharge the winding, after the rotor comes to a standstill, connect the winding to
ground potential.
Commissioning
7.2 Measures before commissioning
1FU9
Operating Instructions, 07/2020, A5E46712792A
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