SINUS PENTA
PROGRAMMING GUIDE
178/486
P236 Max. Value of PID Output
P236 Range
–100.00 ÷ +100.00 %
Function
This is the max. allowable value of PID regulator output.
This value is expressed as a percentage; its allocation depends on parameter
C294, defining PID action.
Example: if C294 = External Out, the PID regulator delivers a refere
nce
obtained based on the controlled variable and its setpoint. In this case, the PID
output can be brought outside through an analog output. The matching between
P236 and the output value (see the ANALOG AND FREQUE
MENU) is user-defined.
If C294 = Reference
, the PID regulator output is the motor speed/torque
reference (the system will ignore any other reference source), parameter P236
is a percentage referring to the max. value, considered as an absolute
between the max. and the min. speed/torque reference of the active motor.
If C294 = Add Reference, the percentage in P236
relates to the instant value of
the speed/torque reference to be adjusted.
If a Frequency control is used, the PID regulator c
an be used to adjust the drive
output voltage; in this case, P236
relates to the instant voltage value (E.g. If a
drive delivers 50V and an adjustment of 10% is implemented, the drive will
deliver 55V).
P237 Min. Value of PID Output
Function
This is the min. allowable value of PID regulator output.
For the value percent of P237, see the description of parameter P236.
P237a Wake-up Mode
P237a Range
0 ÷ 4
1: Feedback < P237b
2: Feedback > P237b
3: Error < P237b
Function
If this parameter is disabled, the PID control re-activates only when the PID
output exceeds the value set in parameter P237.
If this parameter is enabled, the PID control re-activates when
exceeds the threshold set in parameter P237 and:
P237a=1: the Feedback value drops below the level set with P237b;
P237a=2: the Feedback value exceeds the level set with P237b;
P237a=3: the Error value drops below the level set with P237b;
P237a=4: the Error value exceeds the level set with P237b.
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