Ups Mode (Not Available For Compact Cards); Power Off Function - KEB COMBIVERT F6 Programming Manual

Protection functions

UPS mode (Not available for compact cards)

4.4.21.1.1 Voltage level
The UPS mode enables switching to a UPS system with lower voltage in case of
mains failure.
The undervoltage and reset thresholds are shifted to the minimum possible values
(defined by the power supplies in the inverter) and the indirect phase failure detec-
tion (see chapter 4.4.19 Input phases failure detection) is deactivated.
If, due to the application, the voltage thresholds do not have to be set to the mini-
mum value, there is an offset parameter with which both the UP level and the UP
reset level are increased. UP thresholds that are too low can unnecessarily in-
crease the input current when switching on.
In case of improper use, the reduced thresholds can stress the precharging circuit.
pn43[3] USV operation UP offset
Value Display
0.0V...
0...1000
100.0V
The resulting error / reset levels that apply during UPS operation can be read out in
pn43[4] USV UP error level
4.4.21.1.2 Activation
UPS operation must generally be enabled. In the UPS mode parameter
enable USV Operation
when an input is set.
pn43[1] enable USV Operation
Value Plaintext
0 no usv operation
1 generell enabled
enabled by digital
2
input
The input (hardware, software, controlword or STO input) can be selected in pa-
rameter
If several inputs are defined, the input status OR is linked to select them.

Power off function

The status "Power off active" is reached when the event "Mains power failure de-
tected" occurs:
•
The DC link voltage drops below a preset level.
•
Currently no further starting conditions.
92
Function
the definition of the UP / UP reset threshold during UPS operation is based on
the power unit data. With this parameter both thresholds can be increased by an
offset value.
/ pn43[5] USV UP reset
it is also possible to define that the function is only active
Description
UPS operation is generally deactivated
UPS operation is generally activated
As long as this parameter is set to 1, the changed UP / UP reset levels
apply and ripple detection is completely deactivated
UPS operation is enabled if this parameter is set to 2 and the defined in-
put in pn43[2] is active. Behavior then identical to value 1
pn43[2] USV enable source.
level.
pn43[1]
© 2022 KEB Automation KG
0x2A2B[3]
0x2A2B[1]