Jetter JM-204-480, User Manual, Page: 39 / 126

JetMove 204-480 5.2 Motor Protection
Jetter AG 39
5.2 Motor Protection
There are three ways of motor protection.
5.2.1 Built-in temperature sensor
JetMove 204-480 is able to run with three different temperature sensors:
5.2.2 I²t calculation
The digital servo amplifierJetMove 204-480 calculates the model of motor power loss
by an I²t calculation. The determined value is related to the average power loss of the
motor. It is specified in percent of the maximum power loss of the motor.
For this calculation it is important, that the parameters
– nominal current (which is the minimum of nominal motor current and nominal
servo amplifier current).
– current overload factor
– and time constant of the motor
are programmed correctly.
Compatible AC Servo Motors
Motor types Jetter motors of the JH, JL and JK series
Please refer to "Jetter Motor Catalog" or
contact the sales department of Jetter AG.
Note:
In case you intend to use motors other than the types mentioned above, please
contact Jetter AG.
Sensor type Type of sensor signal evaluation
KTY83-110 Temperature is measured in °C.
Warning level is adjustable.
Error detection at max. temperature of motor.
PTC Go-no-go decision
Error detection at max. temperature of motor.
Temperature switch Go-no-go decision
Error detection at max. temperature of motor.