AC International Lenze V0100 User Manual

25

PID Mode

0

0  Disabled

•  Normal-acting:  As feedback 

increases, motor speed decreases

•  Reverse-acting:  As feedback 

increases, motor speed increases

•  PID mode is disabled in Vector 

Torque mode (P00 = 5)

  Normal-acting

2  Reverse-acting

Note
To activate PID mode, one of the TB- inputs (P2...P2) 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 (P20), an 

 fault will occur.

Example:  The desired PID setpoint reference is the keypad (s and t).  
Set TB-x =  (Auto Reference: Keypad):
•  TB-x = closed:  PID mode is active
•  TB-x = open:  PID mode is disabled and the drive speed will be 

controlled by the reference selected in P0.

PID Feedback 
Source

0

0  4-20 mA (TB-25)

Must be set to match the PID feedback 
signal

  0-0 VDC (TB-5)

PID Decimal 
Point



0  PID Display = XXXX

Applies to P204, P205, P24, P25, 
P2...P2, P242, P522, P52

  PID Display = XXX.X
2  PID Display = XX.XX
  PID Display = X.XXX
4  PID Display = .XXXX

Feedback at 
Minimum Signal

0.0

-99.9 

 

00.0

Set to match the range of the feedback 
signal being used
Example: Feedback signal is 0 - 00 
PSI; P204 = 0.0, P205 = 00.0 

Feedback at 
Maximum Signal

00.0 -99.9 

 

00.0

Proportional Gain

5.0

0.0 

{%} 

00.0

Used to tune the PID loop:
•  Increase P207 until system becomes 

unstable, then decrease P207 by 
0-5%

•  Next, increase P208 until feedback 

matches setpoint

•  If required, increase P209 to 

compensate for sudden changes in 
feedback

Integral Gain

0.0

0.0 

{s} 

20.0

Derivative Gain

0.0

0.0 

{s} 

20.0

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 
Ramp

20.0

0.0 

{s} 

00.0

•  time of setpoint change from P204 to 

P205 or vice versa.

•  Used to smooth the transition from 

one PID setpoint to another, such as 
when using the Preset PID Setpoints  
(P2...P2)