Siemens CU240B-2 - Page 268

Advanced commissioning
6.6 Protection functions
Converter with the CU240B-2 and CU240E-2 Control Units
268 Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC
Setting parameters for the temperature monitoring
Parameter
Description
p0335
Motor-cooling method
(factory setting: 0)
0: Natural cooling - with fan on the motor shaft
1: Forced ventilation - with a separately driven fan
2: Liquid cooling
128: No fan
p0601
Motor temperature sensor type
0: No sensor (factory setting)
1: PTC
2: KTY84
4: Temperature switch
6: PT1000
p0604
Mot_temp_mod 2 / sensor alarm threshold
(factory setting 130° C)
For monitoring the motor temperature with KTY84/PT1000.
p0605
Mot_temp_mod 1/2 / sensor threshold and temperature value
(factory setting: 145° C)
For monitoring the motor temperature with KTY84/PT1000.
p0610
Motor overtemperature response
(factory setting: 12)
Determines the inverter behavior when the motor temperature reaches the alarm
threshold p0604.
0: Alarm A07910, no fault.
1: Alarm A07910 and fault F07011. The inverter reduces its current limit.
2: Alarm A07910 and fault F07011.
12: Alarm A07910 and fault F07011. For use of the thermal motor model in parallel to
the temperature sensor: After switching off the supply voltage, the inverter saves the
most-recently calculated d
ifference to the ambient air temperature. After switching the
supply voltage on again, the thermal motor model starts with 90% of the previously
saved difference temperature.
p0640
Current limit [A]
Additional information on the motor temperature monitoring can be found in function diagram
8016 of the List Manual.