YASKAWA FSDrive-MV1000 Series, Руководство по параметрам

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2.8 L: Protection Functions
216 YASKAWA ELECTRIC TOEP C710687 03B FSDrive-MV1000 Parameter Guide
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L7: Torque Limit
The torque limit function limits the torque in each of the four quadrants individually to protect the machinery. It can be
used in OLV and CLV control modes. The limit can be either set by parameters or by analog inputs. A contact output
programmed for “During torque limit” (H2-01, H2-02, H2-03 = 30) can be switched when the drive is operating at the
torque limit.
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Setting Torque Limits
The torque limits are defined by parameters L7-01 to L7-04 for each of the four operation quadrants. Analog inputs can
also be used to either define a general limit for all operation conditions (H3-02, H3-06, H3-10 = 15) or for setting
separate limits for each operation condition (H3-02, H3-06, H3-10 = 10, 11, or 12).
Figure 2.79 shows which of the limit
settings is applied in each quadrant.
If two limit values are defined for the same operation conditions, the drive will use the lower value.
Note: The maximum output torque is ultimately limited by the drive output current (max. 150% of drive rated current in HD, 120% in
ND). Output torque will not exceed the limit set for the drive rated current, even if the torque limits are set to higher values.
Example: If parameter L7-01 = 130%, L7-02 to L7-04 = 200%, and a general torque limit of 150% is set by an analog
input (H3-02, H3-06, H3-10 = 15), then the torque limit in quadrant 1 will be 130%, but 150% in all other quadrants.
Figure 2.79
Figure 2.79 Torque Limit Parameters and Analog Input Settings
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L7-01 to L7-04: Torque Limits
A setting of 100% is equal to the motor rated torque.
Note: If the analog input is programmed for “10: Forward torque limit”, “11: Reverse torque limit”, “12: Regenerative torque limit”, or
“15: General torque limit”, the drive uses the lower value in L7-01 through L7-04, or analog input torque limit.
No. Name Setting Range Default
L7-01 Forward Torque Limit 0 to 300% 100%
L7-02 Reverse Torque Limit 0 to 300% 100%
L7-03 Forward Regenerative Torque Limit 0 to 300% 1%
L7-04 Reverse Regenerative Torque Limit 0 to 300% 1%
positive torque reference
negative torque reference
10: Positive Torque Limit
12: Regenerative Torque Limit
15: Torque Limit
Parameter L7-04
REV motor rotation
11: Negative Torque Limit
15: Torque Limit
Parameter L7-02
10: Positive Torque Limit
15: Torque Limit
Parameter L7-01
FWD motor rotation
11: Negative Torque Limit
12: Regenerative Torque Limit
15: Torque Limit
Parameter L7-03
quadrant 2
quadrant 3
quadrant 1
quadrant 4
REV run regenerative
REV run motoring
FWD run motoring
FWD run regenerative
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