MITSUBISHI ELECTRIC FR-S520 - Manual (Page 87)

78
2
.3.19 Start-time ground fault detection selection
You can choose whether to make ground fault detection valid or invalid at a start.
Ground fault detection is executed only right after the start signal is input to the
inverter.
Parameter Name
Factory
Setting
Setting
Range
Remarks
40
Start-time ground
fault detection
selection
0
<1>
0, 1
0: Ground fault detection for
protection is not executed.
1: Ground fault detection for
protection is executed.
Setting is
enabled when
Pr. 30 = "1".
CAUTION
1. If a 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, ground fault protection may not be
provided.
REMARK
When a ground fault is detected with "1" set in Pr. 40, an approximate 20ms delay
occurs at every start.
2
.4 Output Terminal Function Parameters
2
.4.1 Up-to-frequency sensitivity
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. Running
frequency Adjustable
range
Output signal
(SU)
Time
Start signal
Ou
tp
u
t
fr
equenc
y
(
H
z
) Pr.41
OFF ON OFF
ON OFF
Parameter Name
Factory
Setting
Setting
Range
Remarks
41
Up-to-frequency
sensitivity
10% 0 to 100%
Setting is enabled when Pr. 30 =
"1".
REMARKS
Using Pr. 64 or Pr. 65 to change terminal assignment may affect the other functions.
Make setting after confirming the function of each terminal. (Refer to page 90.)
♦ ♦ ♦ ♦
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 90)