YASKAWA CIPR-GA50C series, Техническое руководство

Страница: 500 / 766

12.3 b: Application
500 YASKAWA SIEPC71061753A GA500 Technical Manual
When b5-01 = 3 or 4 [Fref + PID Trim or Fref + PID Trim (D on feedback)] , one of the inputs in Table 12.30
will be the PID setpoint.
Table 12.30 Input Methods for the PID Setpoint
Input Methods for the PID Setpoint Setting Value
MFAI terminal A1 Set H3-02 = C [Terminal A1 Function Selection = PID Setpoint] .
MFAI terminal A2 Set H3-10 [Terminal A2 Function Selection] = C .
MEMOBUS/Modbus register 0006H Sets MEMOBUS/Modbus register 000FH (Control Selection Setting) bit 1 to 1 (PID
setpoint input). Enters the PID setpoint to MEMOBUS/Modbus register 0006H (PID
Target, 0.01% units, signed).
Pulse train input terminal RP Set H6-01 = 2 [Terminal RP Pulse Train Function = PID Setpoint Value] .
b5-19 [PID Setpoint Value] Set b5-18 = 1 [b5-19 PID Setpoint Selection = Enabled] . Enters the PID setpoint to b5-
19 .
Note:
If you set two inputs for the PID setpoint, it will trigger operation error oPE07 [Analog Input Selection Error] .
■
Entering the PID Feedback Value
You can use two methods to input the PID feedback value to the drive. One method uses a single feedback signal
for usual PID control. The other method uses two signals. The difference between those signals sets the deviation.
•
Use a single feedback signal.
Use Table 12.31 to select how the feedback signal is input to the drive for PID control.
Table 12.31 PID Feedback Input Method
PID Feedback Input Method Setting Value
MFAI terminal A1 Set H3-02 = B [PID Feedback] .
MFAI terminal A2 Set H3-10 = B .
Pulse train input terminal RP Set H6-01 = 1 [PID Feedback Value] .
•
Use two signals, and use the difference between those signals as the feedback signal.
The drive uses two feedback signals, and the difference between those signals becomes the deviation.
Use
Table 12.32 to select how the second feedback value is input to the drive. The drive calculates the deviation
of the second feedback value. Set H3-02 or H3-10 = 16 [Terminal A1 or A2 Function Selection = Differential
PID Feedback] to enable the second feedback signal used to calculated the deviation.
Table 12.32 PID Differential Feedback Input Method
PID Differential Feedback Input Method Setting Value
MFAI terminal A1 Set H3-02 = 16 [Differential PID Feedback] .
MFAI terminal A2 Set H3-10 = 16 .
Note:
If you set H3-02 and H3-10 = 16 , it will trigger oPE07 [Analog Input Selection Error] .