Mitsubishi Electric FR-A700 Technical Manual page 362

Power running
[Pr. 4]
[Pr. 5]
1
[Pr. 5]
2
A
Current averaging time period Current averaging time period Current averaging time period
Less than Less than Less than
[Pr. 271] setting rated current [Pr. 271] setting rated current [Pr. 271] setting rated current
STF
ON
(STR)
ON
X19
2.20.2 Stop-on contact control function [Pr. 6, 48, 270, 275, 276]
To ensure accurate positioning at the upper limit etc. of a
lift, stop-on-contact control causes a mechanical brake to
be closed while the motor is developing a holding torque to
keep the load in contact with a mechanical stopper etc.
[Pr.] Name
Multi-speed setting (low
6
speed)
Second stall prevention
48
operation current
A700
Stop-on contact/load torque
high-speed frequency control
270 selection
E700
Stop-on contact control
selection
Stop-on contact excitation
275 current low-speed multiplying
factor
PWM carrier frequency at
276
stop-on contact
B
Current averaging range Current averaging range Current averaging range
[Pr. 272] setting rated current [Pr. 272] setting rated current [Pr. 272] setting rated current
or more or more or more
ON OFF
OFF
ON
OFF
Initial
Setting Range
Value
10Hz
A700
150%
A700
E700
9999
E700
0
A700
9999
E700
55K or
75K or
9999
more
[Pr. 4]
(60Hz)
[Pr. 5]
(30Hz)
Time
OFF
This function suppresses vibration which is liable to occur
when the load is stopped upon contact in vertical motion
applications, ensuring steady precise positioning.
Description
Set the output frequency for stop-
0 to 400Hz
on-contact control.
Set the stall prevention operation
level for stop-on-contact control.
0 to 220%
( The smaller setting value
A700
between [Pr.22 Stall prevention
0 to 200%
operation level ] and [Pr.48 ] has a
priority.)
Same level as [Pr.22 Stall prevention
9999
operation level ]
0 Normal operation
1 Stop-on-contact control
Load torque high speed frequency
2
control (refer to page 395)
Stop-on-contact+load torque high
3 speed frequency control (refer to
page 395)
Set the force (holding torque) for
stop-on-contact control.
0 to 1000%
Normally set 130% to 180%.
0 to 300%
Valid only during Advanced
magnetic flux vector control.
9999 No compensation.
Set a PWM carrier frequency for
0 to 9
less stop-on-contact control.
For Real sensorless vector control,
0 to 4
carrier frequency is always 2Hz
As set in [Pr. 72 PWM frequency
9999
selection].
396
PARAMETER
[Pr. 271] [Pr. 272] Average current
(50%) (100%)
Value in parenthesis is initial value.
A700 E700
(A700)
Available Inverter
A700
—
E700
—