Power supply

Fuse protection of the load voltage

The electrical fuse protection of the load voltage must be selected in such a way that the maximum current flowing is limited to 3 times the nominal current (max. 1 second)!

Malfunction due to equalizing currents on the protective conductor

In the event of a fault, the resulting equalizing currents can lead to higher currents on the return conductors of the circuits and can damage them and/or the product.

• The power supplies U_P and U_S of the integrated stepper motor drive must either both be designed as SELV or both as PELV.
• Design the power supplies for the load voltage U_P and the control voltage U_S as SELV (Safety Extra Low Voltage) with safe isolation so that there is no connection to earth, protective conductor or active parts of the two circuits with each other.
• Design the power supplies for the load voltage U_P and the control voltage U_S as PELV (Protective Extra Low Voltage) with safe isolation so that there is no connection to earth, protective conductor or active parts of the two circuits with each other. Use a circuit breaker according to the power supply, e.g.
  circuit breaker 400 V 10 kA, 2-pole, B, 6 A, D=70 mm, article number 5SY4206-6, manufacturer Siemens.