YASKAWA HV600 Manual page 205

• b5-08 [PID Primary Delay Time Constant]
Purpose
• Set b5-05 [Derivative Time (D)] to a smaller value.
Prevent overshoot.
• Set b5-03 [Integral Time (I)] to a larger value.
Quickly stabilize control. • Set b5-05 [Derivative Time (D)] to a larger value.
• Set b5-03 [Integral Time (I)] to a smaller value.
Prevent long-cycle oscillations. Set b5-03 [Integral Time (I)] to a larger value.
• Set b5-05 [Derivative Time (D)] to a smaller value.
Prevent short-cycle oscillations.
• If you set b5-05 = 0.00 [Derivative Time (D) =
■
System Units
The drive uses b5-38 [PID User Unit Display Scaling], b5-39 [PID Setpoint Display Digits], and b5-46 [PID Unit
Display Selection] together to apply the user-set PID setpoint and display units at any time.
Parameter b5-38 sets the scaling and b5-46 sets the units-text to the parameters and monitors shown in
Table 2.29.
YASKAWA TOEPYAIHV6002A HV600 Drive Programming
Procedure
disabling D control] and it does not stop
oscillation, then set b5-02 [Proportional Gain (P)]
to a smaller value or set b5-08 [PID Primary
Delay Time Constant] to a larger value.
2.3 b: Application
Results
Table 2.28 and
2
205