Setpoint Values For Monitoring The Bearing Temperature - Siemens SIMOTICS FD 1MN1 Operating Instructions Manual

Start-up

7.7 Setpoint values for monitoring the bearing temperature

Performing the test run
1. Switch the external fan motor on and off briefly.
2. Compare the direction of rotation of the external fan with the specified direction of rotation.
3. If the direction of rotation is wrong, then interchange two line cables in the external fan motor
7.7 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
108
The direction of rotation of the external fan is indicated with an arrow on the fan cover
specifying the direction of rotation or with a terminal designation on the rating plate of the
external fan unit.
Depending on the version, the fan impeller is visible through the air inlet opening in the fan
cover on the external fan motor.
terminal box.
Set values for monitoring the bearing temperatures before commissioning
Set values for monitoring the bearing temperatures
Temperature
115 °C
120 °C
taking into account the
operation
.
op
Temperature
T + 5 K ≤ 115 °C
operation
T + 10 K ≤ 120 °C
operation
SIMOTICS FD 1MN1
Operating Instructions 02/2019