12.3 b: Application
756 YASKAWA SIEPC71061737D GA800 Drive Technical Reference
■ b5-39: PID User Unit Display Digits
No.
(Hex.)
Name Description
Default
(Range)
b5-39
(01FF)
PID User Unit Display
Digits
Sets the number of digits to set and show the PID setpoint.
Determined by b5-20
(0 - 3)
The drive uses this parameter and b5-38 [PID Setpoint User Display] together.
When b5-20 = 3 [PID Unit Selection = User Units], the drive applies user-set PID setpoint and display units to these
parameters and monitors:
• b5-19 [PID Setpoint Value]
• b5-58 [PID Setpoint2]
• b5-59 [PID Setpoint3]
• b5-60 [PID Setpoint4]
• U5-01 [PID Feedback]
• U5-04 [PID Setpoint]
• U5-99 [PID Setpoint Command]
0 : No Decimal Places (XXXXX)
1 : One Decimal Places (XXXX.X)
2 : Two Decimal Places (XXX.XX)
3 : Three Decimal Places (XX.XXX)
■ b5-40: Frequency Reference Monitor @PID
No.
(Hex.)
Name Description
Default
(Range)
b5-40
(017F)
Frequency Reference
Monitor @PID
Sets the contents for monitor U1-01 [Frequency Reference] in PID control.
0
(0, 1)
0 : U1-01 Includes PID Output
Monitor U1-01 shows the frequency reference that was increased or decreased by the PID output.
1 : U1-01 Excludes PID Output
Monitor U1-01 shows the actual frequency reference.
■ b5-47: PID Trim Mode Output Reverse Sel
No.
(Hex.)
Name Description
Default
(Range)
b5-47
(017D)
PID Trim Mode Output
Reverse Sel
Sets reverse motor rotation when the PID control output is negative.
1
(0, 1)
This parameter is enabled when b5-01 = 3 or 4 [PID Mode Setting = Fref + PID Trim, Fref + PID Trim (D on
feedback)].
0 : Lower Limit is Zero
When PID output is negative, PID output is limited to 0 and drive output is shut off.
1 : Negative Output Accepted
When the PID output is negative, the motor will rotate in reverse.
■ b5-53: PID Integrator Ramp Limit
No.
(Hex.)
Name Description
Default
(Range)
b5-53
(0B8F)
RUN
PID Integrator Ramp Limit
Sets the responsiveness of PID control when the PID feedback changes quickly.
0.0 Hz
(0.0 - 10.0 Hz)
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