Setpoint Values For Monitoring The Bearing Temperature; Dangerous Voltage When The Rotor Rotates - Siemens SIMOTICCS A 1FU9 Operating Instructions Manual

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 value
Alarm
Shutting down
Normal operation
Determine the maximum operating temperature of the bearings T
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
Table 7-2
Set value
Alarm
Shutting down
7.2.8

Dangerous voltage when the rotor rotates

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
1FU9
Operating Instructions, 07/2020, A5E46712792A
Set values for monitoring the bearing temperatures before commissioning
Set values for monitoring the bearing temperatures
WARNING
ground potential.
Commissioning
7.2 Measures before commissioning
Temperature
115 °C
120 °C
taking into account the
operation
.
op
Temperature
T + 5 K ≤ 115 °C
operation
T + 10 K ≤ 120 °C
operation
75