3 seperate supply for control electronics, Installation – Lenze EDS4900U-REG User Manual

Page 49

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Installation

4-11

48XX/49XXSHB0399

4.3.3

Separate supply for the control electronics

Stop!

Ensure correct phase connection of the separate mains supply.
Incorrect connection leads to blown fuses.

( The phase shift of the voltages from the power stage to the control

electronics must be smaller than 2°(electrically).

( The controller must be inhibited via the function ”Controller enable” (Ctrl.

enable) before the contactor can be opened or closed. If the switching
sequence is not observed, the fuses will blow or fault messages ACI or FCI
will be indicated.

( The electronics remains supplied after K1 has been opened. The mains is

completely separated via the main switch.

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