Mitsubishi Electric FR-A720-0.4K Instruction Manual page 128

Parameter
Name
267
Refer to Pr. 73.
268
Refer to Pr. 52.
—
269
Parameter for manufacturer setting. Do not set.
Stop-on contact/
load torque high-
270
speed frequency
control selection
High-speed setting
271
maximum current
Middle-speed
272
setting minimum
current
Current averaging
273
range
Current averaging
274
filter time constant
Stop-on contact/
load torque high-
270
speed frequency
control selection
Stop-on contact
excitation current
275
low-speed
multiplying factor
PWM carrier
276
frequency at stop-
on contact
Incre- Initial
Range
ments Value
Without stop-on contact control and load
0
torque high-speed frequency control
1 Stop-on contact control
2 Load torque high speed frequency control
Stop-on contact + load torque high speed
3
1 0
frequency control
Stop-on contact
11
control
Stop-on contact + load
13 torque high speed
frequency control
0.1% 50% 0 to 220%
Set the upper and lower limits of the
current at high and middle speeds.
0.1% 100% 0 to 220%
Average current during acceleration from
0 to 400Hz (Pr. 273
achieved.
0.01Hz 9999
Average current during acceleration from
9999
(Pr. 5
Set the time constant of the primary delay
filter relative to the output current.
(The time constant [ms] is 0.75
1 16 1 to 4000
and the initial value is 12ms.)
A larger setting provides higher stability but
poorer response.
Without stop-on contact control and load
0
torque high-speed frequency control
1 Stop-on contact control
2 Load torque high speed frequency control
Stop-on contact + load torque high speed
3
1 0
frequency control
Stop-on contact
11
control
Stop-on contact + load
13 torque high speed
frequency control
Usually set a value between 130% and
180%.
0 to 1000%
Set the force (holding torque) for stop-on-
0.1% 9999
contact control.
9999 No compensation.
Set a PWM carrier frequency for stop-on-
contact control.
(Valid at the output frequency of 3Hz or
0 to 9/
less.)
1 9999 0 to 4
*
* The setting range differs according to the
9999 As set in Pr. 72 PWM frequency selection.
Description
E.OLT invalid under
stop-on-contact
control
×
1/2)Hz to (Pr. 273 )Hz can be
×
1/2)Hz to (Pr. 5 )Hz is achieved.
×
Pr. 274
E.OLT invalid under
stop-on-contact
control
inverter capacity. (55K or lower/75k or
higher)
Parameter List
: enabled
× : disabled
3
121