Temperature Sensor Evaluation; Function Diagrams And Parameters - Siemens SINAMICS S120 Function Manual

10.2.11

Temperature sensor evaluation

Temperature sensing using PT1000 or KTY84
● When the alarm threshold p0604 is exceeded, alarm A07910 is output.
For vector control, using parameter p0610, you can set the drive response when the alarm
is initiated:
– 0: No response, alarm only A07910, no reduction of I_max
– 1: Alarm A07910 and fault F07011, reduction of I_max
– 2: Alarm A07910 and fault F07011, no reduction of I_max
– 12: Alarm (A07910) and fault (F07011), no reduction of I_max, temperature saved
● When the fault threshold is reached (set via p0605, factory setting = 145 °C), fault F07011
is triggered in conjunction with the setting in p0610.
Temperature measurement via PTC
● Alarm A07910 is triggered once the PTC responds
● Fault F07011 is triggered once the waiting time defined in p0606 has elapsed
Sensor monitoring for wire breakage/short-circuit
● A sensor monitoring function for a short-circuit in the sensor cable is possible for a PTC and
a PT1000 or KTY84 sensor. Wire breakage monitoring is possible for a PT1000 or KTY84
sensor:
If the temperature value lies outside the specified range of ‑140 °C ... +250 °C, then it is
probable that the sensor cable either has a broken wire or short-circuit. The alarm A07015
"Drive: Motor temperature sensor alarm" is initiated. After the wait time in p0607 has
expired, fault F07016 "Drive: Motor temperature sensor fault" is output.
● If an induction motor is connected, you can suppress fault F07016 by setting p0607 = 0. The
drive then continues to operate with the data calculated in the thermal 3-mass model.
● If the motor temperature sensor set in p0600 is not connected, alarm A07820 "Temperature
sensor not connected" is triggered.
10.2.12

Function diagrams and parameters

Function diagrams (see SINAMICS S120/S150 List Manual)
● 8016
● 8017
● 8018
Drive functions
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Signals and monitoring functions - thermal monitoring motor, Mot_temp ZSW F/
A
Signals and monitoring functions - motor temperature model - 1 (I2t)
Signals and monitoring functions - motor temperature model 2 (thermal 3-mass
model)
Monitoring functions and protective functions
10.2 Thermal motor protection
623