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Output terminal function
2.3.19 Start-time earth (ground) fault detection selection (Pr. 40 )
2.4 Output terminal function
2.4.1 Up-to-frequency sensitivity (Pr. 41 )
Use Pr. 64 or Pr. 65 (output terminal function selection) to assign the terminal used for
SU signal output.
You can choose whether to make earth (ground) fault detection at start valid or invalid.
Earth (Ground) fault detection is executed only right after the start signal is input to
the inverter.
Protective function will not activate if an earth (ground) fault occurs during operation.
Parameter Name
Factory
Setting
Setting
Range
Remarks
40
Start-time earth
(ground) fault
detection selection
00, 1
0: Earth (Ground) fault
detection for protection is
not executed.
1: Earth (Ground) fault
detection for protection is
executed.
Setting is
enabled when
Pr. 30 = "1".
CAUTION
1. If an earth (ground) fault is detected with "1" set in Pr. 40, alarm output " "
is detected and the output is shut off.
2. If the motor capacity is less than 0.1kW, earth (ground) fault protection may
not be provided.
REMARKS
When an earth (ground) fault is detected with "1" set in Pr. 40, an approximate 20ms delay
occurs at every start.
The ON range of the up-to-
frequency signal (SU) output
when the output frequency
reaches the running frequency
can be adjusted between 0 and
±100% of the running frequency.
This parameter can be used to
ensure that the running
frequency has been reached to
provide the operation start
signal etc. for related
equipment.
Parameter Name
Factory
Setting
Setting
Range
Remarks
41
Up-to-frequency
sensitivity
10% 0 to 100% Setting is enabled when Pr. 30 = "1".
CAUTION
Using Pr. 64 or Pr. 65 to change the terminal assignment may affect the other functions.
Please make setting after confirming the function of each terminal. (Refer to page 111.)
♦
Related parameters♦
• Assignment of SU signal to terminal ⇒ Pr. 64 "RUN terminal function selection", Pr. 65 "A, B, C
terminal function selection" (refer to page 111)
Running
frequency
Adjustable
range
Output signal
(SU)
Time
Start signal
Output
frequency (Hz)
Pr.41
OFF
ON OFF
ON OFF