Siemens SIMOTICS HT Series, Operating Instructions & Installation Instructions

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7.8 Set values for temperature monitoring of the bearing thermometer
Before the first machine run, set the tripping temperatures of the monitoring system.
Table 7-1 Guidelines for setting the tripping temperature of bearing thermometers
Set value Temperature
Prior to commissioning For shutdown T
0
= 110 °C
During operation For warning T
1
= T + 5 K (max. 115 °C)
For shutdown T
2
= T + 10 K (max. 120 °C)
T = temperature in steady state (°C)
7.9 Setting values for temperature monitoring (slot thermometer)
Before the first machine run, set the tripping temperatures of the monitoring system.
The tripping temperatures of winding thermometers differ depending on the temperature class
of the machine. The temperature class can be found on the rating plate.
Table 7-2 Guidelines for setting the tripping temperature of winding thermometers
Set value Temperature class F/B Temperature class F/F
Prior to commis‐
sioning
for shutdown T0 = 120°C T0 = 140°C
During operation for warning T1 = T + 10 K (max. 135°C) T1 = T + 10 K (max. 150℃)
for shutdown T2 = T + 15 K (max. 140°C) T2 = T + 15 K (max. 155℃)
T = temperature in steady state (°C)
7.10 Switching off the machine
● Do not switch off the water-cooling system immediately after switching off the machine.
Wait for the machine to cool. This will prevent the accumulation of residual heat.
7.11 Avoidance of condensation or formation of condensation within the
machine
● If the controller does not do this automatically, switch on any anti-condensation heating
during stoppages. This will avoid the formation of condensation.
● Observe the specifications on the anti-condensation heating plate in this regard.
Start-up
7.8 Set values for temperature monitoring of the bearing thermometer
SIMOTICS HT Series HT-direct 1FW4...1......A
Operating Instructions 11/2018
85