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YASKAWA
SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
Note:
•
Reduce the setting value of
L7-35
in increments of 10.0% and reduce the setting value of
L7-36
in increments of 2.0 Hz when faults
occur during regenerative loads at low speed.
•
Setting values that are too high can cause faults.
•
The torque limit reduction function does not operate when
L7-35
is set with a value larger than
L7-03 [Forward Regenerative Trq
Limit] or L7-04 [Reverse Regenerative Trq Limit]
.
•
The motor may rotate slightly faster than the reference when a regenerative load is input at low speeds while
L7-35
is set to a low
value.
■
L7-36: Regen Torque Limit Derate Freq
No.
(Hex.)
Name
Description
Default
(Range)
L7-36
(1B58)
Expert
Regen Torque Limit Derate
Freq
Sets the frequency width at which
L7-35 [Low Freq Regen Torque Limit Lvl]
operates.
6.0 Hz
(0.0 - 30.0 Hz)
If the drive detects
oC [Overcurrent]
faults when you connect regenerative loads at low speed, increase the setting
value. Decreases the torque limit as specified by the setting of
L7-35
in a range of 0 ≤ output frequency <
L7-36
.
When the torque limit gradually changes as specified by the output frequency until the output frequency =
L7-36
,
the value changes to the setting of
L7-03 [Forward Regenerative Trq Limit]
and
L7-04 [Reverse Regenerative Trq
Limit]
.
Note:
If you increase the setting of
L7-36
, the motor will rotate at a speed higher than specified when a you input a regenerative load. Do not
set the value higher than necessary.
◆
L8: Drive Protection
L8 parameters
set protective functions that prevent faults such as overheating, phase loss, and ground faults.
■
L8-01: 3% ERF DB Resistor Protection
No.
(Hex.)
Name
Description
Default
(Range)
L8-01
(04AD)
3% ERF DB Resistor
Protection
Sets the function to enable braking resistor protection with a Yaskawa ERF series braking resistor
(3% ED).
0
(0, 1)
0 : Disabled
Disables dynamic braking protection. Use this setting for any dynamic braking option other than the Yaskawa
ERF-type resistor.
1 : Enabled
Enables protection for Yaskawa ERF-type resistors.
Note:
Set
L8-01 = 1
and
H2-01 to H2-05 = D [MFDO Function Selection = Braking Resistor Fault]
. Use a sequence that shuts the power
OFF by using MFDO.
■
L8-02: Overheat Alarm Level
No.
(Hex.)
Name
Description
Default
(Range)
L8-02
(04AE)
Overheat Alarm Level
Sets the
oH
detection level in temperature.
Determined by o2-04
(50 - 150 °C)
The alarm is output when the heatsink temperature exceeds the temperature set in
L8-02
. To enable this function,
set one of
H2-01 to H2-05 [MFDO Function Selection]
to
20 [Drive Overheat Pre-Alarm (oH)]
.
If the temperature reaches the overheat fault level, the drive will trigger an
oH1 [Heatsink Overheat]
fault and
stop operation.
■
L8-03: Overheat Pre-Alarm Selection
No.
(Hex.)
Name
Description
Default
(Range)
L8-03
(04AF)
Overheat Pre-Alarm
Selection
Sets operation after the drive detects an
oH
alarm.
3
(0 - 4)
V/f
CL-V/f
OLV
CLV
AOLV
V/f
CL-V/f
OLV
CLV
AOLV
V/f
CL-V/f
OLV
CLV
AOLV
V/f
CL-V/f
OLV
CLV
AOLV
Содержание CR700
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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 ...