➢ Exception: the braking resistor is activated again, regardless of its tempera-
ture, when the DC link voltage exceeds the OP2 threshold ("extreme overpo-
tential").
Since the drive does not contain a real-time clock, the time when the control
board has been switched off is unknown. Thus, the cooling time for the sub-
mounted braking resistor is also unknown.
The calculated temperature of the braking resistor is stored every 5 seconds. Af-
ter switching on again, the display of the resistance starts with the last stored
value.