Danfoss iC2 - Page 113

Application Guide | iC2-Micro Frequency Converters
Selection number Selection name Selection description
6 Fault
7 Kin. Back-up, Trip with Recovery Kinetic backup with recovery combines the features of kinetic
backup and kinetic backup with trip. This feature makes it
possible to select between kinetic backup and kinetic backup
with trip based on a recovery speed, which is configurable in
P 2.3.8 Kin. Back-up Trip Recovery Level to enable detection of
mains returning. If the mains does not return, the frequency
converter ramps down to 0 RPM and trips. If mains return while
kinetic backup is at a speed above the value set in P 2.3.8 Kin.
Backup Trip Recovery Level, normal operation is resumed. This
is equal to [4] Kinetic Backup. The DC level during [7] Kinetic
backup is P 2.3.7 Power Loss Controller Limit x 1.35. If mains
return while kinetic backup is at a speed below P 2.3.8 Kin.
Backup Trip Recovery Level, the frequency converter ramps down
to 0 RPM using the ramp and then trips.
P 2.3.7 Power Loss Controller Limit
Enter the mains voltage at which the function selected in P 2.3.6 Power Loss Action is activated. This parameter defines the threshold
voltage at which the selected function in P 2.3.6 Power Loss Action is activated. Based on the supply quality, consider to select 90% of the
nominal mains as the detection level. For a supply of 380 V, P 2.3.7 Power Loss Controller Limit should be set to 342 V. This results in a DC
detection level of 462 V (P 2.3.7 Power Loss Controller Limit x 1.35).
Default value: Size Related Parameter type: Range (100–800)
Parameter
number:
1411 Unit: V
Data type: uint16 Access type: Read/Write
P 2.3.8 Kin. Back-up Trip Recovery Level
Enter the kinetic backup trip recovery level for the application. This recovery level is the minimum speed of the motor at which the
frequency converter is to ramp up the speed.
Default value: Size Related Parameter type: Range (Size Related)
Parameter
number:
1415 Unit: Hz
Data type: uint32 Access type: Read/Write
P 2.3.9 Fast Mains Phase Loss Level
Tuning the parameter to a smaller value makes the detection more sensitive and tuning the parameter to a larger value makes the
detection to be less sensitive.
Default value: 300 Parameter type: Range (0–500)
Parameter
number:
1417 Unit: %
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