
Details about Function Parameters
130
In the deceleration process, when Fb-16 “Overvoltage Stall Prevention Options” is effective and
the DC busbar voltage exceeds Fb-17 “Overvoltage Stall Point”, the deceleration will be
suspended until the DC busbar voltage drops to normal. After that, the deceleration process
resumes. Refer to the following figure (c):
When selecting the stall timeout limit, if the motor is in constant stall status, an abnormal
shutdown fault will be reported (Er.Abb).
Stall Point
Output current
Constant
Speed
Overcurrent
Stall Point
Over Pressure
Stall Point
Output current
Output current
Time
Runing
Frequency
Time
Time
Runing
Frequency
Time
Time
Runing
Frequency
Time
(a)
(b)
(c)
Fb-18
DC Busbar Undervoltage Action
Factory
Settings
0
Modification
×
Setting
Range
0: Free shutdown; an undervoltage fault is reported (Er.dcL)
1: Free shutdown; within the “Instantaneous Power Failure Time Allowance” (Fb-20), the
inverter will restart if the power supply is restored and an undervoltage fault will be
reported (Er.dcL) if the power supply is not restored.
2: Free shutdown; while the CPU is in operation, the inverter will restart if the power
supply is restored. No undervoltage fault will be reported
3: Decelerated operation; if the power supply is restored while the CPU is in operation,
the frequency will be accelerated till the freuqncy settings. No undervoltage fault
will be reported.
Fb-19
DC Busbar Undervoltage Point
Factory
Settings
380V
Modification
×
Setting
Range
300
~
450V
Fb-20
Instantaneous Power Failure Time
Allowance
Factory
Settings
0.1s
Modification
×
Setting
Range
0.0
~
30.0s
Fb-21
Instantaneous Power Failure
Deceleration Time
Factory
Settings
0.0s
Modification
×
Setting
Range
0.0
~
200.0s; if the parameter is set as 0.0, the present deceleration time is adopted
The detection of instantaneous power failure is finished by DC busbar voltage detection. When
the DC busbar voltage is lower than Fb-19 “DC busbar undervoltage point”, the following
Summary of Contents for SB200 Series
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