YASKAWA OYMC V1000

1.8 L: Protection Functions
YASKAWA ELECTRIC SIEP C710606 10A YASKAWA AC Drive - V1000 PRELIM. Programming Manual 215
Parameter Details
1
Setting 5: Continue Running if the Speed is less than L6-09 (signed) - Alarm
Detection when the speed is below L6-09 (signed). Upon detection the operation is
continued but an OL5 alarm is output.
Setting 6: Continue Running if the Speed is less than L6-09 - Alarm
Detection when the speed is below L6-09 (unsigned). Upon detection the operation is
continued but an OL5 alarm is output.
Setting 7: Stop when Motor Speed is less than L6-09 (signed)
Detection when the speed is below L6-09 (signed). Upon detection the operation is stopped
and an OL5 fault is output.
Setting 8: Stop when Motor Speed is less than L6-09
Detection when the speed is below L6-09 (unsigned). Upon detection the operation is
stopped and an OL5 fault is output.
■ L6-09: Mechanical Weakening Detection Speed Level
Sets the speed level that defines the speed range for mechanical weakening detection.
The value is set as a percentage of the maximum frequency. If L6-08 is set for unsigned
speed detection (L6-08 = 2, 4, 6, 8) then the absolute value of L6-09 is used, i.e., negative
settings will be treated as positive.
■ 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.
■ L6-11: Mechanical Weakening Detection Start Time
Sets the drives cumulative operation time at which mechanical weakening detection is
activated. If U1-04 reaches the L6-11 value, the function is activated.
No. Name Setting Range Default
L6-09 Mechanical Weakening Detection Speed Level -110.0 to 110.0% 110%
No. Name Setting Range Default
L6-10 Mechanical Weakening Detection Time 0.0 to 10.0 s 0.1 s
No. Name Setting Range Default
L6-11 Mechanical Weakening Detection Start Time 0 to 65535 h 0 h