178
• VACON®
apfiff09 marine
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
7.6.5 DC Link handling
P2.6.5.1
Overvoltage controller ID607
“Overvolt Contr”
The parameter selects the behaviour of the overvoltage controller in open loop control. It
also activates the closed loop overvoltage controller but the operation is always of type
‘PI’
in closed loop control modes.
0
“Off”
- Controller switched off
Both open and closed loop overvoltage controllers are off.
1
“On:NoRamping” –
Activated P-Controller type operation
Both open and closed loop controllers are activated.
Open loop controller is a P-type controller.
Closed loop controller is a PI-type controller.
2
“On: Ramping” –
Activated PI-Type controller
Both open and closed loop controllers are activated.
Open loop controller is a PI-type controller.
Closed loop controller is PI-type controller (as in selection 1).
P2.6.5.2
Overvoltage Reference Select
ID1262
“OverVolt.Ref.Sel”
Overvoltage reference level depending on the status of the brake chopper.
In closed loop control, the overvoltage controller level is a
djusted by “OverVoltageRef.”
The parameter can be found in the CL setting parameter group.
ID1262
Brake chopper in use
Brake chopper not in use
0 /
High Voltage
500 V Unit: 844 V
690 V Unit: 1164 V
500 V Unit: 797 V
690 V Unit: 1099 V
1 /
Norm.Voltage
1.25*Estimated DC nominal voltage
1.18*Estimated DC nominal voltage
2 /
BrakeChLevel
1.07*brake chopper level
Brake chopper level
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