MITSUBISHI ELECTRIC FR-S520 - Manual (Page 103)

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2
.10.5 Input filter time constant
You can set the input section's built-in filter constant for an external voltage or
current frequency setting signal.
Effective for eliminating noise in the frequency setting circuit.
Parameter Name Factory Setting Setting Range Remarks
74
Input filter time
constant
1 0 to 8
Setting is enabled when
Pr. 30 = "1"
REMARKS
Increase the filter time constant if steady operation cannot be performed due to
noise. A larger setting results in slower response. (The time constant can be set
between approximately 1ms to 1s with the setting of 0 to 8. A larger setting results
in a larger filter time constant.)
2
.10.6 Reset selection/PU stop selection
You can make reset input acceptance selection and choose the stop function
from the operation panel (PU).
Reset selection : You can choose the reset function input (RES signal)
timing.
PU stop selection: When an alarm etc. occurs in any operation mode, you can
make a stop from the operation panel by pressing the
STOP
RESET
key.
Parameter Name
Factory
Setting
Setting
Range
Remarks
75
Reset selection/
PU stop selection
14
0, 1,
14, 15
Setting is enabled when Pr. 30 = "1"
<Setting>
Pr. 75
Setting
Reset Selection PU Stop Selection
0 Reset input normally enabled.
1
Enabled only when the protective
function is activated.
The PU stop key is invalid. Note that the
STOP
RESET
key is valid only in the PU operation mode or
combined operation mode (Pr. 79 = "4").
14 Reset input normally enabled.
15
Enabled only when the protective
function is activated.
Pressing the
STOP
RESET key decelerates the
inverter to a stop in any of the PU, external and
communication operation modes.