Illustration 3.3: Controlled Ramp-down, longer mains failure. Ramping down as long as the energy in the system allows for it, then the motor
is coasted.
Illustration 3.4: Kinetic Back-up, short mains failure. Ride through as long as the energy in the system allows for it.
Illustration 3.5: Kinetic Back-up, longer mains failure. The motor is coasted as soon as the energy in the system is too low.
14-11 Mains Voltage at Mains Fault
Range: Function:
Application
dependent*
[180 - 600 V] This parameter defines the threshold voltage at which the selected function in par. 14-10
Mains
Failure
should be activated.
3 Parameter Description VLT
®
HVAC Drive Programming Guide
148
MG.11.C9.02 - VLT
®
is a registered Danfoss trademark
3
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