396
PARAMETER
2.20.2 Stop-on contact control function [Pr. 6, 48, 270, 275, 276]
(A700)
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.
This function suppresses vibration which is liable to occur
when the load is stopped upon contact in vertical motion
applications, ensuring steady precise positioning.
1
2
Output frequency
(STR)
X19
STF
ON
ON
OFF
OFF
[
Pr. 5
]
[
Pr. 4
]
[
Pr. 5
]
Power running
A
B
Current averaging time period
Current averaging time period
Current averaging time period
Current averaging range
Current averaging range
Current averaging range
Time
Less than
[
Pr. 271
] setting rated current
Less than
[
Pr. 271
] setting rated current
Less than
[
Pr. 271
] setting rated current
[
Pr. 272
] setting rated current
or more
[
Pr. 272
] setting rated current
or more
[
Pr. 272
] setting rated current
or more
ON
ON
OFF
OFF
[
Pr. 5
]
(30Hz)
[
Pr. 271
]
(50%)
Average current
Frequency
[
Pr. 272
]
(100%)
Value in parenthesis is initial value.
[
Pr. 4
]
(60Hz)
A700 E700
[Pr.]
Name
Initial
Value
Setting Range
Description
Available Inverter
6
Multi-speed setting (low
speed)
10Hz
0 to 400Hz
Set the output frequency for stop-
on-contact control.
{
{
48
Second stall prevention
operation current
150%
9999
0 to 220%
0 to 200%
Set the stall prevention operation
level for stop-on-contact control.
(
The smaller setting value
between [
Pr.22 Stall prevention
operation level
] and [
Pr.48
] has a
priority.)
{
{
9999
Same level as [
Pr.22 Stall prevention
operation level
]
—
{
270
Stop-on contact/load torque
high-speed frequency control
selection
Stop-on contact control
selection
0
0
Normal operation
{
{
1
Stop-on-contact control
2
Load torque high speed frequency
control (refer to page 395)
{
—
3
Stop-on-load torque high
speed frequency control (refer to
page 395)
275
Stop-on contact excitation
current low-speed multiplying
factor
9999
0 to 1000%
0 to 300%
Set the force (holding torque) for
stop-on-contact control.
Normally set 130% to 180%.
Valid only during Advanced
magnetic flux vector control.
{
{
9999
No compensation.
276
PWM carrier frequency at
stop-on contact
9999
55K or
less
0 to 9
Set a PWM carrier frequency for
stop-on-contact control.
For Real sensorless vector control,
carrier frequency is always 2Hz
{
{
75K or
more
0 to 4
9999
As set in [
Pr. 72 PWM frequency
selection
].
A700
E700
A700
E700
A700
E700
A700
A700
E700
A700
E700
Summary of Contents for FR-A700 Series
Page 245: ...279 2 PARAMETER PARAMETER MEMO ...
Page 440: ...474 PARAMETER MEMO ...
Page 522: ...556 SELECTION MEMO ...
