B&R ACOPOSinverter P84, User Manual

Page: 299 / 405

Programming guidelines
ACOPOSinverter P84 User's Manual 2.10 299
[MGT. UNDERVOLTAGE] (USb-) (continuation) and [IGBT TEST] (tlt-)
Code Name/Description Setting range Factory settings
USb- [UnderV. fault mgt]
tSM [UnderV. restart tm] 1 to 999.9 s 1 s
Time delay before a restart is permitted after a complete standstill for [guided DEC USF] (StP) = [StopRamp] (rMP) , if the voltage has reached
the normal value.
UPL [Prevention level]
Setting of the level for undervoltage prevention in V. Access is possible if [guided DEC USF] (StP) is not equal to [No] (nO) . The adjustment
range and the factory setting are dependent on the rated voltage of the inverter as well as the value of the [mains voltage] (UrES) .
StM
[Max stop time]
0.01 to 60 s 1 s
Ramp up time if [guided DEC USF] (StP) = [StopRamp] (rMP) .
tbS
[DC bus maintain tm]
1 to 9999 s 9999 s
Stopping time of the DC bus if [guided DEC USF] (StP) = [SupplDC Bus] (rMP) .
tIt- [IGBT test]
Strt
[IGBT test] [No]
(nO)
nO [No] (nO) : No test
YES [Yes] (YES) : The IGBTs are tested on power up and every time a run command is sent. These tests cause a slight delay (a few ms). In the
event of a fault, the inverter will lock.
The following faults can be detected:
•
Inverter output short circuit (terminals U-V-W): SCF displayed
•
IGBT faulty: xtF, where x indicates the number of the affected IGBT
•
IGBT short circuit: x2F, where x indicates the number of the affected IGBT
Parameter that can be modified during operation or when stopped.
[4-20 mA LOSS] (LFL-)
Code Name/Description Factory settings
LFL- [4-20 mA LOSS]
LFL2 [4-20 mA loss AI2] [ign fault] (nO)
nO [ign fault] (nO) : Fault is ignored. This configuration is the only possible one if [min. value AI2] (CrL2) , see "AI2 CONFIGURATION" on page 173 ,
is not greater than 3 mA or if [Typ AI2] (AI2t) , see "AI2 CONFIGURATION" on page 173 = [voltage] (10U) .
YES [freewheel stop] (YES) : Freewheel stop
Stt [in accordance with STT] (Stt) : Stop in accordance with the configuration of [STOP MODE] (Stt) , see "STOP MODE (Stt-)" on page 206 , without
fault tripping. In this case, the alarm relay does not open and once the fault disappears the inverter is ready for operation in accordance with the
restarting conditions of the active command channel (for example according to [2/3-wire ctrl.] (tCC) and [Type 2-wire ctrl.] (tCt) , see "Input and
output parameters (tCC - rr5)" on page 166 , if the control is on the terminal side). Configuring an alarm for this fault is recommended (assigned
to a logic output, for example) in order to indicate the cause of the stop.
LFF [FALLBACK SPEED] (LFF) : Change to fallback speed, maintained as long as the fault persists and the run command has not been removed
1)
.
rLS
[Hold freq.]
(rLS) : The inverter maintains the frequency being applied when the fault occurred, as long as the fault is present and the run command
has not been removed
1)
.
rMP [StopRamp] (rMP) : Stopping via ramp.
FSt [Quick stop] (FSt) : Quick stop
dCI [DC brak.] (dCI) : Stop by DC injection
This normal hold cannot be used with certain other functions. see "APPLICATION FUNCT. FUn-" on page 197 .
1) Since the fault does not trip a stop in this case, the display of this fault must be assigned to a relay or a logic output.