YASKAWA P1000 Technical Manual page 161

Models: 200 v class: 3/4 to 175 hp nd 400 v class: 3/4 to 1000 hp nd 600 v class: 1 to 250 hp nd
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Using PID Control
Applications for PID control are listed in
Application
Machinery speed is fed back and adjusted to meet the target value. Synchronous control is
Speed Control
performed using speed data from other machinery as the target value
Pressure
Maintains constant pressure using pressure feedback.
Fluid Control
Keeps flow at a constant level by feeding back flow data.
Temperature
Maintains a constant temperature by controlling a fan with a thermostat.
Control
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PID Setpoint Input Methods
The PID setpoint input can be input from one of the sources listed in
If none of the sources listed in
listed in
Table 5.9
becomes the PID setpoint.
PID Setpoint Source
Analog Input A1
Analog Input A2
Analog Input A3
MEMOBUS/Modbus Register 0006 H
Pulse Input RP
Parameter b5-19
Note:
A duplicate allocation of the PID setpoint input will cause an oPE07 (Multi-Function Analog Input Selection Error) alarm.
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PID Feedback Input Methods
Input one feedback signal for normal PID control or input two feedback signals can for controlling a differential process value.
Normal PID Feedback
Input the PID feedback signal from one of the sources listed in
PID Feedback Source
Analog Input A1
Analog Input A2
Analog Input A3
Pulse Input RP
Note:
A duplicate allocation of the PID feedback input will cause an oPE07 (Multi-Function Analog Input Selection Error) alarm.
YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
PID input
D control
PID Output
Figure 5.14 PID Operation
Table
5.8.
Table 5.8 Using PID Control
Description
Table 5.9
are used, the frequency reference source in b1-01 (or b1-15) or one of the inputs
Table 5.9 PID Setpoint Sources
Set H3-02 = C
Set H3-10 = C
Set H3-06 = C
Set bit 1 in register 000F H to 1 and input the setpoint to register 0006 H
Set H6-01 = 2
Set parameter b5-18 = 1 and input the PID setpoint to b5-19
Table 5.10 PID Feedback Sources
Time
PID output
I control
P control
Time
Table
5.9.
Settings
Table
5.10:
Settings
Set H3-02 = B
Set H3-10 = B
Set H3-06 = B
Set H6-01 = 1
5.2 b: Application
Sensors Used
Tachometer
Pressure sensor
Flow rate sensor
Thermocoupler,
Thermistor
5
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