Yaskawa G5 PID for Trim Control - Manual (Page 2)

Date: 07/01/04, Rev: 04-07 Page 2 of 12 TM.G5SW.012
PID For Trim Control
This section replaces section 5.36
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The Proportional, Integral and Derivative control function provides closed-loop control, or regulation of a system process
variable (dancer position, pressure, temperature, etc.). This regulation is accomplished by comparing a feedback signal
to a setpoint reference, which results in an error signal. The PID control algorithm then performs calculations, based
upon the PID parameter settings (b5-01 thru b5-12), on this error signal. The result of the PID algorithm is then used as
the new speed reference, or to trim the existing speed reference.
5.36A. b5-01: PID Selection
Using this parameter, PID control can be enabled, and the type of PID control can be selected.
Setting Description
0 PID Disabled
1 PID Enabled (Output Only) - PID output becomes the output frequency
2 PID Enabled (Output + Reference) - PID output “trims” the frequency reference
3 PID Enabled (Output + Reference, with accel / decel timer) - PID output “trims” the frequency reference
• If b5-01 is set to 0, no PID function will occur.
• If b5-01 is set to 1, the frequency reference the drive will use will come from the PID control only.
• If b5-01 is set to 2, the frequency reference the drive will use will be the actual frequency reference (Terminal 13 or
d1-01 thru d1-09) plus the output of the PID control. This mode could be used to perform a line speed with dancer
trim function.
• If b5-01 is set to 3, the frequency reference the drive will use will be the actual frequency reference (Terminal 13 or
d1-01 thru d1-09) plus the output of the PID control. In addition, the accel/decel ramps will change to the settings in
C1-07 & C1-08 after the time specified in b5-08. See description of b5-08 for more details.
5.36B. Line Speed / Frequency Reference Selection
Refer to Section 5.25 - Local/Remote and Reference Selection
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in order to select the line speed. NOTE: In Section 5.25,
the “Auto” speed reference is terminal 13. The “Manual” speed reference is terminal 16, and the “Memory Data” refers to
speed reference parameters d1-01 thru d1-09.
5.36C. PID Setpoint Selection
b5-07: Position Offset
H3-05: Multi-function Analog Input 1
Selection (Terminal 16)
H3-09: Multi-function Analog Input 2
Selection (Terminal 14)
Select the PID control Setpoint Reference from either the internal digital setting b5-07, or from an analog input (Terminal
16 or 14). Note: If both a digital and an analog setpoint reference are used simultaneously, the two will add together.
• Voltage signal (0 -10 VDC) Terminal 16: Set H3-05 to data “20” and H3-04 to data “0”.
• Voltage signal (-10 to +10 VDC) Terminal 16: Set H3-05 to data “20” and H3-04 to data “1”.
• Current signal (4 to 20 mA) Terminal 14: Set H3-09 to data “20” and H3-08 to data “2”.
• Voltage signal
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(0 -10 VDC) Terminal 14: Set H3-09 to data “20” and H3-04 to data “0”.
• Voltage signal (3)
(-10 to +10 VDC) Terminal 14: Set H3-09 to data “20” and H3-04 to data “1”.
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GPD515/G5 Technical Manual TM4515.
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See note 3 on next page.
Factory Setting: 0
Range: 0, 1, 2, 3
Factory Setting: 0.00
Range: -10.00 to +10.00V
Factory Setting: 0
Range: 0 - 21
Factory Setting: 1F
Range: 0 - 21