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Functions
7.7 Protection functions
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA
177
Wire-break and short-circuit monitoring via KTY 84
● Wire break: Resistance value > 2120 Ω
● Short circuit: Resistance value < 50 Ω
As soon as a resistance outside this range is measured, A07015 "Alarm temperature sensor
fault" is activated and after the delay time expires, F07016 "Motor temperature sensor fault"
is initiated.
Temperature monitoring via ThermoClick sensor
The ThermoClick sensor responds at values ≥100 Ω. After the ThermoClick sensors has
responded, either alarm A07910 or shutdown with fault F07011 is initiated corresponding to
the setting in p0610.
Parameters to set the motor temperature monitoring with sensor
Table 7- 17 Parameters for detecting the motor temperature via a temperature sensor
Parameter
Description
P0335
Specify the motor cooling
0: Self-ventilated - with fan on the motor shaft (IC410* or IC411*) - (factory setting)
1: Forced ventilation - with a separately driven fan (IC416*)
2: Self-ventilated and inner cooling* (open-circuit air cooled)
3: Forced ventilated and inner cooling* (open-circuit air cooled)
Terminal no.
14
PTC+
KTY anode
ThermoClick
P0601
Motor temperature sensor type
0: No sensor (factory setting)
1: PTC thermistor (→ P0604)
2: KTY84 (→ P0604)
4: ThermoClick sensor
15
PTC-
KTY cathode
ThermoClick
P0604
Motor temperature alarm threshold (factory setting 130°C)
The alarm threshold is the value at which the inverter is either shut down or I
max
is
reduced (P0610)
P0605
Motor temperature fault threshold (Factory setting: 145℃)
P0610
Motor overtemperature response
Determines the response when the motor temperature reaches the alarm threshold.
0: No motor response, only an alarm
1: Alarm and reduction of I
max
(factory setting)
reduces the output speed
2: Fault message and shutdown (F07011)
P0640
Current limit (input in A)
*According to EN 60034-6