Siemens SIMATIC ET 200pro - Page 137

Setting functions
8.6 Protection and monitoring functions
SIMATIC ET 200pro FC-2 converter
Operating Instructions, 04/2015, FW V4.7.3, A5E34257324B AB
137
Using a KTY sensor, the converter monitors the motor temperature and the sensor
itself for wire
-break or short-circuit:
● Temperature monitoring:
The converter uses a KTY sensor to evaluate the motor temperature in the range from -
48° C ... +248° C.
Use the p0604 or p0605 parameter to set the temperature for the alarm and fault
threshold.
– Overtemperature alarm (A07910):
- motor temperature > p0604 and p0610 = 0
– Overtemperature fault (F07011):
The converter switches off with fault in the following cases:
- motor temperature > p0605
- motor temperature > p0604 and p0610 ≠ 0
● Sensor monitoring (A07015 or F07016):
– Wire-break:
The converter interprets a resistance > 2120 Ω as a wire-break and outputs the alarm
A07015. After 100 milliseconds, the converter changes to the fault state with F07016.
– Short-circuit:
The converter interprets a resistance < 50 Ω as a short-circuit and outputs the alarm
A07015. After 100 milliseconds, the converter changes to the fault state with F07016.
Setting parameters for the temperature monitoring
Parameter
Description
p0335
Specify the motor cooling
0: Natural cooling - with fan on the motor shaft (factory setting)
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 (→ p0604)
2: KTY84 (→ p0604, p0605)
4: Temperature switch
p0604
Motor temperature alarm threshold (factory setting 130° C)
p0605
Motor temperature fault threshold
(factory setting 145° C)
Setting for KTY84 sensor. The parameter has no significance for a PTC sensor.