YASKAWA L1000A - Page 245

5.9 n: Special Adjustments
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual 245
Parameter Details
5
Adjusting the Speed Feedback Compensation
Follow the procedure below to set up the Speed Feedback Compensation
1.
Set the drive for Closed Loop Vector for PM motors.
2. Enter the correct data from the motor nameplate and the motor test report to the E5- parameters.
3. Set all ASR-related parameters (C5-) to their most appropriate values.
4. Set the Speed Feedback Compensation to operate in test mode (n5-07).
5. Connect the ropes to the motor.
6. Start operating the elevator while looking at the Speed Feedback Compensation output monitor (U6-56) and the
motor speed feedback (U1-05).
7. Adjust the Speed Feedback Compensation gain (n5-08) and C5-18 so that the monitor values in U6-56 and
U1-05 are relatively low.
Figure 5.46 shows a block diagram for the Speed Feedback Compensation.
Figure 5.46
Figure 5.46 Speed Feedback Compensation Operation
■ n5-07: Speed Feedback Compensation Selection
Enables or disables the Speed Feedback Compensation.
Enabling the Speed Feedback Compensation can help stop motor oscillation that results from setting the ASR
proportional gain (C5-01) to a high value for faster speed response.
Setting 0: Disabled
Setting 1: Enabled
Setting 2: Speed Feedback Compensation test mode
■ n5-08: Speed Feedback Compensation Gain (P)
Sets the proportional gain for the Speed Feedback Compensation.
Although this parameter rarely requires adjustment, increasing the gain can help improve responsiveness relative to the
load. Lower setting if oscillation occurs.
No. Parameter Name Setting Range Default
n5-07 Speed Feedback Compensation Selection 0 to 2 0
No. Parameter Name Setting Range Default
n5-08 Speed Feedback Compensation Gain (P) 0.00 to 300.00 3.00
+
–
Kn (1+1/ST)
Torque
Limit
C5-01, -02
ASR
L7-
Speed Observer
output monitor
Speed Feedback
Speed Observer Gain (P)
n5-07
n5-07
= 1
= 0, 2
= 1= 0, 2
q-Axis
Current
Control
Torque
Reference
n5-08
q-Axis Current
Operating
Speed
= 2
U1-09
U6-56
common_TMonly
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