YASKAWA P1000 Technical Manual page 101

Goal
Suppress overshoot
Achieve stability quickly while
allowing some overshoot
Suppress long cycle oscillations
(longer than the integral time setting)
Suppress short cycle oscillations
n
b5-89: Sleep Method Selection
Determines how the drive sleeps and wakes-up when using PID.
No.
b5-89
Setting 0: Standard
Setting 1: EZ Sleep/Wake-up
n b5-90: EZ Sleep Unit
Sets the unit, range, and resolution of parameters b5-91 and b5-92.
No.
b5-90
<1> Unit and resolution are determined by b5-20, b5-39, and b5-46. Internally limited to b5-38. Changing b5-20, b5-38 and b5-39 will not automatically
update the value of this parameter.
Setting 0: Hz
Setting 1: RPM (number of motor poles must be entered)
n b5-91: EZ Minimum Speed
Sets the PID minimum speed and integral lower limit.
The lower limit of the internal value is the higher of b5-34 and d2-02.
YASKAWA SIEP YAIP1B 01B YASKAWA AC Drive – P1000 Bypass Technical Manual
Table 5.6 PID Fine Tuning
Tuning Procedure
• Reduce the derivative time (b5-05)
• Increase the integral time (b5-03)
• Decrease the integral time (b5-03)
• Increase the derivative time (b5-05)
Increase the integral time (b5-03)
• If oscillation cycle time is close to the
derivative time, reduce the derivative
time (b5-05).
• If the derivative time is set to 0.00 s and
oscillations are still a problem, reduce
the proportional gain (b5-02) or increase
the PID primary delay time (b5-08)
Name
Sleep Method Selection
Name
EZ Sleep Unit
Result
Response
After adjustment
Response
Response
Response
Setting Range
0, 1
Setting Range
<1>
0, 1
5.2 b: Application
Before adjustment
After adjustment
Time
Before adjustment
Time
Before adjustment
After adjustment
Time
Before adjustment
After adjustment
Time
Default
0
Default
0
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