Veichi AC90 Manual page 133

AC90 TENSION CONTROL FREQUENCY INVERTER MANUAL
increase quickly and even not stop increase while adding frequency, then should increase [FA.19] to improve
the protection respond speed.
FA.08 Energy braking act voltage
Energy braking act voltage: Inverter energy braking begins while DC bus voltage rise up and over rated.Voltage
[FA.08] setting. Voltage is DC20V lower than [FA.08] setting while energy braking stops. Please set it carefully.
It is only valid for inverter with inner braking parts. Inverters under AC90-T3-018T have build in braking parts.
AC90-S2-3R7T and inverters under than that with 220V input have built in braking parts. All inverters do not have
resistances. If need energy braking, please use optional resistance.
Note: If use energy braking, please close OV protection function. What mens set [FA.01] LED "0"digit and "00"
digit as 0. Energy braking only be valid in running, invalid while stop.
FA.09
Bus under-voltage
FA.10
protection
It sets the lowest voltage limitation of DC side while inverter works normally. In location with lower grid, under-voltage
protection level can be reduced to keep inverter work normally.
Note: Too low grid voltage reduces inverter reliability.
Speed fall act voltage at sudden
FA.11
power down
Main circuit aim voltage at
FA.12
sudden power down
Speed fall gain at sudden power
FA.13
down
Speed back waiting time at
FA.14
sudden power down
Inverter reduces output frequency and compensates voltage by feedback energy while sudden power down.
While input voltage is lower than [FA.11] , inverter begins DEC. Bus voltage rise up back. While voltage back to [FA.12] ,
it stop DEC. Inverter run at stable speed for [FA.14] time and ACC to frequency setting.
[FA.13] is DEC time gain. Voltage rises up more quickly while it is bigger. It is suitable for small inertia load. Voltage
rises up more slowly while it is smaller. It is suitable for big inertia load.
FA.15
ACC OC protection point
FA.16
DEC OC protection point
FA.17
Current limit level while running
Current limit frequency ACC/DEC
FA.18
time while running
OC protection poing=inverter output current/inverter ratted current. 100% is rated current.
ACC OC protection point
DEC OC protection point
Current limit level while running
Setting range: 115.0-140.0%
Reserved
Setting range:50.0-100.0%
Setting range: 0-200%
Setting range: 0-200%
Setting range: 0.01-10.00
Setting range: 0.1-100.0s
Setting range: 100-250%
Setting range: 100-250%
Setting range: 100-250%
Setting range: 0.00-650.00s
128
Function Parameter specifications
Factory set: 120.0%
Factory set:60.0%
Factory set: 20%
Factory set: 90%
Factory set: 2.00
Factory set: 2.0s
Factory set: 160%
Factory set: 160%
Factory set: 160%
Factory set: 10.00s