Operating instructions

Functions, monitoring, and protective functions
9.5 Monitoring and protective functions
Drive converter cabinet units
Operating Instructions, 10/2008, A5E00288214A
411
Temperature measurement via PTC
The device is connected to terminal X522:7/8 on the customer terminal block (TM31). The
threshold for switching to an alarm or fault is 1650 Ω. If the threshold is exceeded, the
system switches internally from an artificially-generated temperature value of -50 °C to
+250°C and makes it available for further evaluation.
● Set the PTC temperature sensor type: p4100 = 1
● Activate motor temperature measurement via the external sensor: p0600 = 10
In the delivery condition and on completion of commissioning, the source for the external
sensor is set to the customer terminal block (TM31) (p0603 = (TM31) r4105).
● Alarm A7910 is triggered once the PTC responds.
● Fault F7011 is triggered once the delay time defined in p0606 has elapsed.
Sensor monitoring for wire breakage/short-circuit
If the temperature of the motor temperature monitor is outside the range -140 °C to +250 °C,
the sensor cable is broken or has short-circuited. Alarm A07015 ("Alarm: temperature sensor
fault") is triggered. Fault F07016 (“Fault: temperature sensor fault”) is triggered once the
delay time defined in p0607 has elapsed.
Fault F07016 can be suppressed by p0607 = 0. If an induction motor is connected, the drive
continues operating with the data calculated in the thermal motor model.
If the system detects that the motor temperature sensor set in p0600 is not connected, alarm
A07820 "Temperature sensor not connected" is triggered.
Function diagram
FP 8016 Thermal monitoring motor
FP 9576 TM31 -temperature evaluation KTY/PTC
FP 9577 TM31 -sensor monitoring KTY/PTC
Parameter
• p0600
Motor temperature sensor for monitoring
• p0604
Motor overtemperature fault threshold
• p0605
Motor overtemperature alarm threshold
• p0606
Motor overtemperature timer
• p0607
Temperature sensor fault timer
• p0610
Response to motor overtemperature condition
• p4100
Temperature evaluation sensor type