Overtemperature protection
Above a temperature of approx. 75°C on the power board (corresponds to 65–72°C outside on the back cover), the power part of the controller switches off and the error bit is set (see objects 1001h and 1003h). After cooling down and confirming the error (see table for the controlword, "Fault reset"), the controller again functions normally.
The following temperature test results provide information on the temperature behavior of this controller.
Temperature tests
are performed under the following conditions:
- Operating voltage: 48 V DC
- Motor current: 4.2 A rms
- Operation mode: Velocity mode, full step, 30/100 rpm
- Ambient temperature: 25 °C / 45 °C
- Altitude of site: 500 m above sea level
- No external cooling in the climatic chamber, e. g., via fan
- Motor not flanged mounted
At 25°C (+48 V, 4.2 A rms, Velocity Mode 30 rpm), the controller was in operation for longer than 2 hours without having been switched off. The temperature on the cover was stable at approx. 60°C.
Note: Aside from the motor, the exact temperature
behavior is also dependent on the flange connection and the heat transfer there as
well as on the convection in the application. For this reason, we recommend always
performing an endurance test in the actual environment for applications in which
current level and ambient temperature pose a problem.