Parameter Description MD280/MD280N User Manual
- 158 -
This parameter is used to improve the safety protection coefficient. If it is
set to 1, it has two functions:
1) The running command exists upon power-on of the inverter. It
must cancel the running command to eliminate the running protection
status.
2) If the running command still exists when the inverter fault is reset,
it must cancel the running command to eliminate the running
protection status.
This can prevent the dangers caused by the automatic running of the motor
under unexpected condition.
Frequency detection
value
Factory
default
value
50.00Hz
F5-15
Setup range
0.00Hz to maximum frequency
(F0-04)
Frequency detection
hysteresis value (FDT
hysteresis)
Factory
default
value
5.0%
F5-16
Setup range 0.0 to 100.0%(FDT level)
It is used to set the detection value of the output frequency and the
hysteresis value upon release of the output action.
When the inverter running output frequency reaches FDT (F5-15), DO or
relay outputs frequency detection arrival signal till the output frequency falls
below a certain frequency of FDT level (FDT level-F5-15×F5-16), as shown
in Fig.6-5:
Output Frequency (Hz)
PDT Level
FDT Hysteresis Value
Frequency Arrival
Detection Signal
(DO Relay )
Time
Time
Output Frequency (Hz)
PDT Level
FDT Hysteresis Value
Frequency Arrival
Detection Signal
(DO Relay )
Time
Time
Fig.6-18 Schematic Diagram for FDT Level Detection
efesotomasyon.com
To Next Page
Loading...
