Siemens SIMOTICS XP 1LA5 - Setpoint Values for Monitoring the Bearing Temperature

Explosion-protected machines
56100000002002, 01/2016
123
7 Commissioning
When carrying out any work on the machine, observe the general safety instructions
(Page 77) and the specifications contained in EN 50110-1 regarding safe operation
of electrical equipment.
7.1 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 commis-
sioning
Set value
Temperature
Alarm
115 °C
Shutting down
120 °C
Normal operation
Measure the normal operating temperature of the bearings T
op
at the installation
location 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