• Undertorque Detection
ON ON
Motor Current (output torque)
Torque Detection 1 (N.O.)
or
Torque Detection 2 (N.O.)
L6-03
or
L6-06
L6-03
or
L6-06
*The range where undertorque is not detected is approx. 10%
of the drive rated output current (or the motor rated torque).
L6-02
or
L6-05
*
Note: Torque detection is not active in about 10% of the drive rated output current (or motor rated torque).
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L6-08: Mechanical Weakening Detection Operation
The following settings are available for L6-08:
0: Mechanical Weakening Detection disabled.
1: Continue running if the speed (signed) is greater than L6-09 (alarm only).
2: Continue running if the speed (not signed) is greater than L6-09 (alarm only).
3: Interrupt drive output when the motor speed (signed) is greater than L6-09 (protection operation).
4: Interrupt drive output when the motor speed (not signed) is greater than L6-09 (protection operation).
5: Continue running if the speed (signed) is less than L6-09 (alarm only).
6: Continue running if the speed (not signed) is less than L6-09 (alarm only).
7: Interrupt drive output when the motor speed (signed) is less than L6-09 (protection operation).
8: Interrupt drive output when the motor speed (not signed) is less than L6-09 (protection operation).
Note:
This output signal is switched on when one of the multi-function outputs is set for mechanical weakening detection (H2-oo = 22).
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L6-09: Mechanical Weakening Detection Speed Level
Sets the speed at which mechanical weakening operates. Uses Torque Detection 1 when determining the torque (L6-01 to L6-03). If the absolute value
selection is set to L6-08, then negative numbers are treated as positive numbers.
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L6-10: Mechanical Weakening Detection Time
Sets the time permitted for the situation selected in parameter L6-08 to arise before mechanical weakening is detected.
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L6-11: Mechanical Weakening Detection Start Time
Mechanical weakening detection is triggered when the cumulative operation time (U4-01) exceeds this value.
u
L7: Torque Limit
The torque limit function is available only when in the Open Loop Vector Mode. Set torque limit to protect the connect machinery.
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L7-01/L7-02: Forward/Reverse Torque Limit
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L7-03/L7-04: Forward/Reverse Regenerative Torque Limit
No. Name Setting Range Default Page
L7-01 Forward Torque Limit 0 to 300 200 −
L7-02 Reverse Torque Limit 0 to 300 200 −
L7-03 Forward Regenerative Torque Limit 0 to 300 200 −
L7-04 Reverse Regenerative Torque Limit 0 to 300 200 −
Note: If the multi-function analog input is programmed for “10: Forward Torque Limit”, “11: Reverse Torque Limit”, “12: Regen Torque Limit”, or “15: FWD/REV Torque Limit”,
the drive uses the lower value of either L7-01 through L7-04, or analog input torque limit.
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L7-06: Torque Limit Integral Time Constant
Sets the integral time constant for the torque limit.
5.8 L: Protection Functions
198
YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)
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