B4: Timer Function; B5: Pid Control - YASKAWA A1000 HHP Programming Manual

No.
b3-24
Setting 0: Current Detection Speed Search
Setting 1: Speed Estimation Speed Search
Note: Refer to Current Detection Speed Search (b3-24 = 0) on page 27
28 for explanations of the Speed Search methods.
n b3-25: Speed Search Wait Time
Sets the wait time between Speed Search restarts. Increase the wait time if problems occur with overcurrent, overvoltage, or
if the SEr fault occurs.
No.
b3-25
u

b4: Timer Function

The timer function is independent of drive operation and can delay the switching of a digital output triggered by a digital input
signal and help eliminate chattering switch noise from sensors. An on-delay and off-delay can be set separately.
To enable the timer function, set a multi-function input to "Timer Function Input" (H1-oo = 18) and set a multi-function
output to "Timer output" (H2-oo = 12). Only one timer can be used.
n b4-01, b4-02: Timer Function On-Delay, Off-Delay Time
b4-01 sets the on-delay time for switching the timer output. b4-02 sets the off-delay time for switching the timer output.
No.
b4-01
b4-02
n Timer Function Operation
The timer function switches on when the timer function input closes for longer than the value set to b4-01. The timer function
switches off when the timer function input is open for longer than the value set to b4-02.
function operation:
Multi-function Contact
Input: Timer Function
Multi-function Contact
Output: Timer Function
u

b5: PID Control

The drive has a built-in Proportional + Integral + Derivative (PID) controller that uses the difference between the target value
and the feedback value to adjust the drive output frequency to minimize deviation and provide accurate closed loop control
of system variables such as pressure or temperature.
n
P Control
The output of P control is the product of the deviation and the P gain so that it follows the deviation directly and linearly. With
P control, only an offset between the target and feedback remains.
n I Control
The output of I control is the integral of the deviation. It minimizes the offset between target and feedback value that typically
remains when pure P control is used. The integral time (I time) constant determines how fast the offset is eliminated.
YASKAWA ELECTRIC SIEP YEAHHP 01B YASKAWA AC Drive – A1000 HHP Programming Manual
Parameter Name
Speed Search Method Selection
Name
Speed Search Wait Time
Name
Timer Function On-Delay Time
Timer Function Off-Delay Time
□□
ON
（H1- =18)
□□
ON
（H2- =12)
b4-01 b4-02
Figure 1.19 Timer Operation
Setting Range
0, 1
and Refer to Speed Estimation Type Speed Search (b3-24 = 1) on page
Setting Range
0.0 to 30.0 s
Setting Range
0.0 to 3000.0 s
0.0 to 3000.0 s
Figure 1.19
ON
ON
b4-01 b4-02
1.2 b: Application
Default
0
Default
0.5 s
Default
0.0 s
0.0 s
illustrates the timer
On (Closed)
Off (Open)
On (Closed)
Off (Open)
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