GE AF-650 GP Programming Manual page 131

Parameter Descriptions
B-15 Brake Check
Option:
3 3
[0] Off
*
[1] Warning
[2] Trip
[3] Stop and
trip
[4] AC brake
[5] Trip Lock
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.
This parameter is only active in frequency converters with
an integral dynamic brake.
B-16 AC brake Max. Current
Range:
100 % [0 - 1000.0 %] Enter the maximum permissible current
*
NOTE
B-16 AC brake Max. Current will not have effect when
P-20 Motor Construction = [1] PM, non salient SPM.
130
AF-650 GP Programming Guide
Function:
amplitude before braking + 1%: Brake
check has failed by returning 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 is OK.
Monitors brake resistor and brake IGBT for a
short-circuit during operation. If a short-circuit
occurs, warning 25 appears.
Monitors brake resistor and brake IGBT for a
short-circuit, and runs 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
decels to coast and then trips. A trip lock alarm
is displayed (e.g. warning 25, 27 or 28).
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
performs a controlled decel.
Function:
when using AC brake to avoid
overheating of motor windings.
B-17 Over-voltage Control
Option: Function:
Over-voltage control (OVC) reduces the risk
of the frequency converter tripping due to
an over voltage on the DC link caused by
generative power from the load.
[0] Disabled No OVC required.
*
[1] Enabled (not Activates OVC except when using a stop
at stop) signal to stop the frequency converter.
[2] Enabled Activates OVC.
NOTE
OVC must not be enabled in hoisting applications.
B-18 Brake Check Condition
Range:
[0] At Power Up
*
[1] After Coast Situations Brake check will be performed after
DET-618C
Function:
Brake check will be performed at
power up
coast situations