YASKAWA GA700 Series

12.3 b: Application
670 YASKAWA SIEPC71061705H GA700 Series Technical Manual
Table 12.30 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.
MFAI terminal A3 Set H3-06 = B.
Pulse train input terminal RP Set H6-01 = 1 [PID Feedback Value].
• Use Two Feedback Signals and Calculate the Deviation from the Difference between Those Signals
Use Table 12.31 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, H3-06, or H3-10 = 16 [Terminal A1/A3/A2 Function Selection =
Differential PID Feedback] to enable the second feedback signal used to calculated the deviation.
Table 12.31 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.
MFAI terminal A3 Set H3-06 = 16.
Note:
If you set two or more of H3-02, H3-06, and H3-10 to 16, it will trigger oPE07 [Analog Input Selection Error].
■ PID Control Block Diagram
Figure 12.36 PID Control Block Diagram
■ PID Feedback Loss Detection
The PID feedback loss detection function detects broken sensors and defective wiring between the drive and
sensors.
Use the PID feedback loss detection function when you use PID control. If the feedback signal is too low, the
motor can suddenly accelerate to the maximum output frequency. This function prevents such risks to the load.
The drive uses two methods to detect feedback loss: