Commissioning

4.5.4PID Parameters

Code

Possible Settings

 

IMPORTANT

No. Name

Default Selection

 

 

 

PID Mode

0

0

Disabled

•

Normal-acting: As feedback

 

 

 

 

 

increases, motor speed decreases

 

 

1

Normal-acting

•

Reverse-acting: As feedback

 

 

 

 

 

increases, motor speed increases

 

 

2

Reverse-acting

• PID mode is disabled in Vector

 

 

 

Torque mode (P300 = 5)

 

 

 

 

 

Note

To activate PID mode, one of the TB-13 inputs (P121...P123) must be used to select the Auto Reference that matches the desired PID setpoint reference. If the selected PID setpoint reference uses the same analog

signal as the PID feedback (P201), an fault will occur.

Example: The desired PID setpoint reference is the keypad (s and t).

Set TB-13x = 6 (Auto Reference: Keypad):

•TB-13x = closed: PID mode is active

•TB-13x = open: PID mode is disabled and the drive speed will be controlled by the reference selected in P101.

PID Feedback

0

 

0

4-20 mA (TB-25)

 

Must be set to match the PID feedback

Source

 

 

 

 

 

 

signal

 

 

 

1

0-10 VDC (TB-5)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PID Decimal

1

 

0 PID Display = XXXX

 

Applies to P204, P205, P214, P215,

Point

 

 

 

1 PID Display = XXX.X

 

P231...P233, P242, P522, P523

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 PID Display = XX.XX

 

 

 

 

 

 

3 PID Display = X.XXX

 

 

 

 

 

 

 

 

 

 

 

 

 

4 PID Display = .XXXX

 

 

 

 

 

 

 

 

 

Feedback at

0.0

 

-99.9

00.0

Set to match the range of the feedback

Minimum Signal

 

 

 

 

 

 

signal being used

 

 

 

 

 

 

 

Example: Feedback signal is 0 - 300

Feedback at

100.0

-99.9

3100.0

PSI; P204 = 0.0, P205 = 300.0

Maximum Signal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Proportional Gain

5.0

 

0.0

{%}

100.0

Used to tune the PID loop:

 

 

 

 

 

 

 

• Increase P207 until system becomes

Integral Gain

0.0

 

0.0

{s}

20.0

 

unstable, then decrease P207 by

 

 

 

 

 

 

 

Derivative Gain

0.0

 

0.0

{s}

20.0

10-15%

 

 

 

 

 

 

 

• Next, increase P208 until feedback

 

 

 

 

 

 

 

matches setpoint

 

 

 

 

 

 

 

• If required, increase P209 to

 

 

 

 

 

 

 

compensate for sudden changes in

 

 

 

 

 

 

 

feedback

 

 

 

 

Note

 

 

 

 

 

 

 

 

 

 

 

 

• Derivative Gain is very sensitive to noise on the feedback signal and

 

 

 

 

must be used with care

 

 

 

 

 

• Derivative Gain is not normally required in pump and fan applications

 

 

 

 

 

 

 

 

PID Setpoint

20.0

 

0.0

{s}

100.0

• time of setpoint change from P204 to

Ramp

 

 

 

 

 

 

P205 or vice versa.

 

 

 

 

 

 

 

• Used to smooth the transition from

 

 

 

 

 

 

 

one PID setpoint to another, such as

 

 

 

 

 

 

 

when using the Preset PID Setpoints

 

 

 

 

 

 

 

(P231...P233)

 

 

 

 

 

ENGLISH

 

25

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AC International V0100, SV01B operating instructions PID Parameters
Page 25 Page 27

V0100, SV01B specifications

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