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N700E INSTRUCTION MANUAL
3-31
3.5 b Group Parameters
b01
Restart Select
0: No Restart
1: Restart from 0Hz
2: Restart from the frequency at time of fault
3: Restart from the frequency at time of fault; then slow down to stop
Select what action to take when a trip occurs for Over current (OC), Overvoltage (OV),
and Under voltage (UV). Restart attempts up to 3 times for OC and OV since there is
liability issues to consider. However, in case of UV, it attempts 10 times. For trip count, if
the consecutive trip does not occur within 60 seconds, an accumulated trip count is reset
to 0. See b24 section.
Related Parameters: b24
b02
Line Loss Ride-Through Time
Range: 0.3 ~ 1.0 Sec in 0.1 Sec
Program the period for VFD go through under voltage condition without UV trip. This time
varies depending upon the loading. Thus, a user must perform the test prior to entering
the time value.
Related Parameters:
b03
Line Loss Ride-Through Run Delay
Range: 0.3 ~ 10.0 Sec in 0.1 Sec
Frequency value of VFD output Voltage.
It is the value specified on the Motor nameplate.
Related Parameters:
b04
Motor Thermal Overload Level
Range: 20.0 ~120.0 % in 0.1 %
Program a level of the rated motor current (INV Rated Current)
Related Parameters:
b05
Motor Thermal Overload Profile
0: Self Cooling – Fan is mounted on the motor shaft
1: Forced Cooling – Fan is powered by external power source
Select a cooling method
Related Parameters:
Motor
RPM
Power
b02
b03
VFD Vout
i) Momentary Power Failure Period < b02
P
Failure
Line Loss Ride T
Free Run
Motor
RPM
Power
t
b02
b03
VFD Vout
ii) Momentary Power Failure Period > b02
P
Failure
Line Loss Ride T
Free Run
100 %
Output Current
80 %
60 %
0
5
20
60
F (Hz)
Forced Cooling
Self Coo
ling