Danfoss vlt FC 102 Programming Guide

14-10 Mains Failure
Option: Function:
14-11*1.35
Ref
U
DC
A B C D E F
130BC923.10
0
U
DC
[V]
n [RPM]
t [S]
t [S]
A Normal operation.
B Mains failure.
C Kinetic back-up.
D Mains return.
E Kinetic back-up, ramping to trip.
F Trip.
Illustration 3.42 Kinetic Back-Up,
Trip with Recovery, Trip Slow
Ramp where Mains Returns
below Parameter 14-15 Kin. Back-
up Trip Recovery Level, in this
Illustration a Slow Ramp is Used
If the ramp is quicker than the
ramp-down speed of the
application, the ramping generates
current. This results in a higher U
DC
,
which is limited using the brake
chopper/resistor brake.
14-11*1.35
U
DC
0
U
DC
Ref
A B C D E F
130BC924.10
U
n [RPM]
t [s]
DC
[V]
t [s]
A Normal operation.
B Mains failure.
C Kinetic back-up.
D Mains return.
E Kinetic back-up ramping to trip.
F Trip.
Illustration 3.43 Kinetic Back-Up,
Trip with Recovery where Mains
Returns below
Parameter 14-15 Kin. Back-up Trip
Recovery Level, in this Illustration
a Quick Ramp is Used
DC Voltage
Output Speed rpm
Over Voltage Control Level
Mains
Time
130BT101.10
Par 14-11
Illustration 3.44 Controlled Ramp Down - Short Mains Failure
Mains
Time
DC Voltage
Output Speed rpm
Over Voltage Control Level
130BT108.10
Par 14-11
Illustration 3.45 Controlled Ramp Down, Longer Mains Failure
Over Voltage Control Level
DC Voltage
Output Speed rpm
Mains
Time
130BT100.10
Par 14-11
Illustration 3.46 Kinetic Back-up, Short Mains Failure
Mains Time
DC voltage
Output speed RPM
Overvoltage control level
130BT109.10
Par 14-11
Illustration 3.47 Kinetic Back-Up, Longer Mains Failure
14-11 Mains Fault Voltage Level
Range: Function:
Size
related*
[180 - 600 V] This parameter denes the
threshold voltage at which the
selected function in
parameter 14-10 Mains Failure
should be activated. The detection
level is at a factor sqrt(2) of the
value in this parameter.
Parameter Descriptions
VLT
®
HVAC Drive FC 102
148 Danfoss A/S © 10/2019 All rights reserved. M0010001
33

Danfoss vlt FC 102 Specifications

General

Category	DC Drives
Model	Danfoss VLT FC 102
Output voltage range	0 to rated motor voltage
Power range	0.37 kW to 200 kW
Communication interfaces	RS-485
Protection features	Overvoltage, undervoltage, overcurrent, short circuit, earth fault, overtemperature, motor thermal protection
Cooling method	Air-cooled
Enclosure rating	IP20, IP21, IP55 (depending on model)
Approvals	CE, UL, cUL