Description of Function Codes
MD380 User Manual
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reports an alarm when the actual accumulative power-on time reaches the threshold of 100
hours, perform the setting as follows:
1) Set virtual DI1 to user-dened fault 1: A1-00 = 44.
2) Set that the valid state of virtual DI1 is from virtual DO1: A1-05 = 0000.
3) Set virtual DO1 to power-on time reached: A1-11= 24.
4) Set the accumulative power-on time threshold to 100 h: F8-16 = 100 h.
Then, the AC drive reports Err27 when the accumulative power-on time reaches 100 hours.
Function Code Parameter Name Setting Range Default
F8-17 Accumulative running time threshold 0–65000 h 0 h
It is used to set the accumulative running time threshold of the AC drive. If the accumulative
running time (F7-09) reaches the value set in this parameter, the corresponding DO terminal
becomes ON.
Function Code Parameter Name Setting Range Default
F8-18 Startup protection
0: No
1: Yes
0
This parameter is used to set whether to enable the safety protection. If it is set to 1, the AC
drive does not respond to the run command valid upon AC drive power-on (for example, an
input terminal is ON before power-on). The AC drive responds only after the run command
is cancelled and becomes valid again.
In addition, the AC drive does not respond to the run command valid upon fault reset of the
AC drive. The run protection can be disabled only after the run command is cancelled.
In this way, the motor can be protected from responding to run commands upon power-on or
fault reset in unexpected conditions.
Function Code Parameter Name Setting Range Default
F8-19
Frequency detection value
(FDT1)
0.00 Hz to maximum
frequency
50.00 Hz
F8-20
Frequency detection
hysteresis (FDT hysteresis 1)
0.0%–100.0% (FDT1 level) 5.0%
If the running frequency is higher than the value of F8-19, the corresponding DO terminal
becomes ON. If the running frequency is lower than value of F8-19, the DO terminal goes
OFF
These two parameters are respectively used to set the detection value of output frequency
and hysteresis value upon cancellation of the output. The value of F8-20 is a percentage of
the hysteresis frequency to the frequency detection value (F8-19).
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