3.11 Problems that Can Frequently Occur during Setup and Possible Solutions
234
YASKAWA
SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
◆
Brake Slips at Start
Causes
Possible Solutions
S1-04 = 0.00 [Brake Delay Time = 0.00 s]
.
Set
S1-04
≒
0.30 to 0.70
.
The setting values of
S1-05 [Brake Release Current (FWD)]
,
S1-06 [Brake
Release Current (REV)]
,
S1-07 [Brake Release Torque (FWD)]
, and
S1-08
[Brake Release Torque (REV)]
are too high.
Decrease the setting values of
S1-05
to
S1-08
. Set
S1-07
≒
70 to 80
.
The V/f setting is too high.
Decrease the V/f setting.
◆
Brake Grinding Occurs at Stop
Causes
Possible Solutions
The setting values of
S1-12 and S1-13 [Brake Hold Frequency]
are too high. Decrease the setting values of
S1-12 and S1-13
.
The setting value of
S1-14 [Slip Prevention Frequency]
is too high.
Decrease the setting value of
S1-14
.
The setting value of
S1-15 [Slip Prevention Time]
is too high.
Decrease the setting value of
S1-15
.
The setting value of
b2-04 [DC Inject Braking Time at Stop]
is too high.
Set
b2-04 < 0.5 [DC Inject Braking Time at Stop < 0.50 s]
.
◆
Impact Stop Is Not Available After the Motor Stops
Causes
Possible Solutions
The setting values of
S3-03 [Impact Stop Detect Torque (FWD)]
and
S3-04
[Impact Stop Detect Torque (REV)]
are too low.
Increase the setting value of
S3-03
and
S3-04
.
The value set in
S3-05 [Impact Stop Detection Time]
is too low.
Increase the setting value of
S3-05
.
◆
Motor Keeps Rotating at the Creep Frequency During Impact Stop Operation
Causes
Possible Solutions
The setting values of
S3-03 [Impact Stop Detect Torque (FWD)]
and
S3-04
[Impact Stop Detect Torque (REV)]
are too high.
Decrease the setting value of
S3-03
and
S3-04
.
Torque does not increase when the transport cart impacts something.
Check the slip of the cart wheels, and if something causing mechanical friction.
The value set in
S3-02 [Impact Stop Creep Time]
is too high.
Decrease the setting value of
S3-02
.
◆
Accelerates Despite a Heavy Load When Using the Light-Load Acceleration 1
Function
Causes
Possible Solutions
The settings in
S4-04 [Light-load 1 Detect Torque (FWD)]
and
S4-05 [Light-
load 1 Detect Torque (REV)]
are too high.
Decrease the setting value of
S4-04
and
S4-05
.
The value set in
S4-07 [Light-load 1 Detect Time]
is too low.
Increase the setting value of
S4-07
.
◆
No Acceleration Despite a Light Load When Using the Light-Load Acceleration
1 Function
Causes
Possible Solutions
Light-load Acceleration 1 is not enabled.
Enable Light-load Acceleration 1 by one of the following ways.
•
Set
H1-xx = 30 [MFDI Function Selection = Light-load Acceleration 1 Enabled]
, and have
that terminal switch ON.
•
Set
S4-01 = 1 [Light-load Accel Ctrl Selection = Light-load Accel Ctrl 1 enabled]
.
The settings in
S4-04 [Light-load 1 Detect Torque (FWD)]
and
S4-05 [Light-
load 1 Detect Torque (REV)]
are too low.
Increase the setting value of
S4-04
and
S4-05
.
The mechanical loss for the crane is greater than the value set in
S4-05
while
operating in reverse.
The following procedure explains how to adjust
S4-20 [Light-load 1 Torque Bias (REV)]
.
1.
Operate the drive with no load at the frequency set in
S4-06 [Light-load 1 Detect
Frequency]
, and monitor the value displayed in
U1-09 [Torque Reference]
.
2.
Set the reverse value of
U1-09
to
S4-20
.
Note:
Refer to
“
Light-load Acceleration 1 Function
”
on page
for more information about Light-load Acceleration 1.
Содержание CR700
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Страница 2: ...This Page Intentionally Blank 2 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
Страница 244: ...3 13 Test Run Checklist 244 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
Страница 422: ...7 7 Storage Guidelines 422 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
Страница 426: ...8 2 Disposal Instructions 426 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
Страница 837: ...EZZ023535 2 35 1 Revision History Revision Revised Content Date First Edition 2017 08 ...
Страница 872: ...EZZ023536 2 16 Revision History Revision Revised Content Date First Edition 2017 08 ...