Wire cross-sections for the supply

If the power supply and drive unit are far apart, wire resistance can result in drops in voltage. For 24 VAC/DC this can result in the drive receiving insufficient power and thus no longer starting up. To prevent this, it is important to correctly size the wire cross-section for the power supply.

The following formulae allow you to calculate the necessary cross-section of the wire or the maximum wire length for the cross-section being used. Alternatively, a transformer can be used to increase the secondary voltage.