GE AF-650 GP Programming Manual page 38

Parameter Descriptions
KTY sensors can be used for motor protecting
(parameter H-97 KTY Threshold level).
AF-650 GP can handle 3 types of KTY sensors, defined in
parameter H-95 KTY Sensor Type. The actual sensor
temperature can be read out from parameter DR-19 KTY
sensor temperature.
Illustration 3.9 KTY Type Selection
KTY Sensor 1: 1 kΩ at 100 °C (for example Philips KTY
84-1)
KTY Sensor 2: 1 kΩ at 25 °C (for example Philips KTY 83-1)
KTY Sensor 3: 2 kΩ at 25 °C (for example Infineon KTY-10)
NOTICE
If the temperature of the motor is utilized through a
thermistor or KTY sensor, the PELV is not complied with
if there are short circuits between motor windings and
the sensor. Put extra isolation on the sensor to comply
with PELV.
DET-618D
AF-650 GP™ Programming Guide
3.3.3.3 Electronic Thermal Overload
The calculations estimate the need for a lower load at
lower speed due to less cooling from the fan incorporated
in the motor.
Illustration 3.10 Electronic Thermal Overload Profile
3.3.3.4 Klixon
The Klixon type thermal circuit breaker uses a KLIXON
metal dish. At a predetermined overload, the heat caused
by the current through the disc causes a trip.
Using a digital input and 24 V as supply:
Example: The frequency converter trips when the motor
temperature is too high.
Parameter set-up:
•
•
Illustration 3.11 Thermistor Connection
02/2016 All rights reserved.
Set parameter F-10 Electronic Overload to [2]
Thermistor Trip.
Set parameter F-12 Motor Thermistor Input to [6]
Digital Input.
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