Danfoss VLT AQUA Drive FC 200 Programming Manual page 53

Parameter Description
2-15 Brake Check
Option:
3 3
[0] Off
*
[1] Warning
[2] Trip
[3] Stop and
trip
[4] AC brake
NOTE
Remove a warning arising in connection with [0] Off or [1]
Warning by cycling the mains supply. The fault must be
corrected first. For [0] Off or [1] Warning, the frequency
converter keeps running even if a fault is located.
2-16 AC brake Max. Current
Range:
100.0 % [ 0.0 - 1000.0
*
%]
NOTE
2-16 AC brake Max. Current will not have effect when
1-10 Motor Construction = [1] PM, non salient SPM.
52
VLT
Function:
1. The DC link ripple amplitude is
measured for 300 ms without braking.
2. The DC link ripple amplitude is
measured for 300 ms with the brake
turned on.
3. If the DC link ripple amplitude while
braking is lower than the DC link ripple
amplitude before braking +1%. Brake
check failed, return a warning or alarm.
4. If the DC link ripple amplitude while
braking is higher than the DC link
ripple amplitude before braking +1%.
Brake check OK.
Monitors brake resistor and brake IGBT for a
short-circuit during operation. If a short-circuit
occurs, a warning appears.
Monitors brake resistor and brake IGBT for a
short-circuit, and to run a test for brake resistor
disconnection during power-up
Monitors for a short-circuit or disconnection of
the brake resistor, or a short-circuit of the brake
IGBT. If a fault occurs the frequency converter
cuts out while displaying an alarm (trip locked).
Monitors for a short-circuit or disconnection of
the brake resistor, or a short-circuit of the brake
IGBT. If a fault occurs the frequency converter
ramps down to coast and then trips. A trip lock
alarm is displayed.
Function:
Enter the maximum permissible
current when using AC brake to avoid
overheating of motor windings. The
AC brake function is available in Flux
mode only.
MG20O602 - VLT
®
AQUA Drive Programming Guide
2-17 Over-voltage Control
Option:
[0] Disabled
[2] Enabled
*
NOTE
2-17 Over-voltage Control will not have effect when
1-10 Motor Construction = [1] PM, non salient SPM.
NOTE
The ramp time is automatically adjusted to avoid tripping
of the frequency converter.
®
is a registered Danfoss trademark
Function:
No OVC required.
Activates OVC.