Mitsubishi Electric Freqrol-A100 Instruction Manual page 115

Pr. 74
-
Pr. 75
o
Pr. 74 "input filter time constant"
Allows the setting of the built-in filter time constant 'in the
external voltage or current frequency setting signal input sec-
tion. Effective for eliminating noise in the frequency setting
circuit.
,
Increases the filter time constant if stable operation cannot be
performed due to noise. A larger set value results in lower
response.
Potentiometer
. .
o
Pr. 75 "reset selection/PU disconnection detectioniPU
stop selection
Detecting that the connector of the PU (parameter unit) has
been disconnected from the inverter, this function brings the
inverter to an alarm stop. Also, this function allows the reset
(terminal RES) function to be selected. Further, setting any of
14 to 17 in Pr. 75 allows selection of the function which causes
the motor to be decelerated to a stop by pressing the PU's STOP
.
key in any of the PU, external and communication operation
modes. (PU disconnection detection: Refer to page 116, PU
stop selection: Refer to page 146.)
Operation (PU disconnection detection)
When this parameter has been set to detect the disconnection
of the PU, this function detects that the PU has been discon-
nected from the inverter and brings the inverter to an alarm stop.
Pr. 75
Set Reset Selection
Value
Reset lnput normally
O
-
enabled.
'
Reset Input enabled only
1 when the protectwe
functlon 1 s actlvated.
Reset lnput normally
enabled.
Reset lnput enabled only
3 when the protectwe
funct~on
IS
actlvated.
j 4
* : )
1
Reset inLut normally
factory'
settin
enabled.
Reset input enabled only
6 , , , ~ e s e t input normally
enabled.
Reset input enabled only
PU Disconnection
pU Stop Selection
Detection
(Note 1 t o
5)
(Note 6 t o 8 )
Operation will be
continued with the Only in the PU
PU disconnected. operation mode,
and the inverter
output is shut off.
Operation will be
continued with the
PU disconnected.
When the PU is
disconnected, an
Brror is displayed
3nd the inverter
3 u t ~ u t is shut off.
In any operation
mode such as PU,
external, communi-
cation, etc., the
motor is stopped by
pressing the PU's
STOP key.
To restart, the fol-
lowing operation,
is required.
1
*
By short-circuiting across terminals RES and SD during opera-
tion, the inverter shuts off output while the signal is on, the
data of electronic overcurrent protection and regenerative
brake duty is reset, and the motor is coasted to a stop.
**
Only to be set with FR-PU02E(ER)-1 and FR-ARWE-(ER)-1
parameter units. If set with other parameter units the inverter
will not start, return the setting to 0 to
3
to allow the inverter
to start.