General Data; Overload Characteristic (Ol); Figure 6: Switch-Off Time T Depending On The Overload I / In (Ol) 400 V Devices; Figure 7: Switch-Off Time T Depending On The Overload I / In (Ol) 230 V Devices - KEB COMBIVERT S6 Series Instructions For Use Manual

GeNerAL DATA

3.6 General data

3.6.1 Overload characteristic (OL)

All COMBIVERT S6 can be operated time-limited at rated switching fre-
quency even in overload.Further information can be found in the diagrams

„Figure 6: Switch-off time t depending on the overload I / IN (OL) 400 V devices"

„Figure 7: Switch-off time t depending on the overload I / IN (OL) 230 V
Restrictions:
•
•
On exceeding a load of 105% the overload integrator starts. When falling below the in-
tegrator counts backwards. If the integrator achieves the overload characteristic, "Error!
Overload" is triggered.
After a cooling period the message "no ERROR overload" is displayed. The error can be
reset now. The drive controller must remain switched on during the cooling down phase.
40
The thermal design of the heat sink is based on the rated current and the maximum
permissible ambient temperature. At high ambient temperatures and/or high heat
sink temperatures (for example, by preceding utilization nearby 100%), the drive
controller can change to overtemperature error before triggering the protective func-
tion OL.
At low output frequencies or switching frequencies higher than the rated switching
frequency, the maximum current (I0Hz/I6Hz) can be exceeded before and the error
OL2 can be triggered (see also chapter "Maximum current (OL2)").
and
devices".