Elettronica Santerno SINUS/ISD 200 S-0.75, User Manual, Page: 103 / 206

SINUS/ISD 15P0082B8
USER MANUAL
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6.4.1.30 PID
This function block allows the inverter to
be used in applications requiring a trim
to the setpoint, depending on feedback
from an external measurement device.
Typically this will be used for process
control, i.e. pressure or flow. MMI Menu Map
1
SETUP PARAMETERS
2
FUNCTION BLOCKS
3
SETPOINT FUNCS
4
PID
PID ERROR INPUT
PID ENABLE
PID INTEGRAL OFF
PID P GAIN
PID I TIME CONST
PID D TIME CONST
PID FILTER TC
PID OUT POS LIM
PID OUT NEG LIM
PID OUT SCALING
PID OUTPUT
PID PID
PID OUTPUT [320] –– 0.00 %
0.00 % – [310] ERROR INPUT ––
FALSE –– [311] ENABLE ––
FALSE –– [312] INTEGRAL DEFEAT ––
1.0 –– [313] P GAIN ––
1.00 s –– [314] I TIME CONST ––
0.000 s –– [315] D TIME CONST ––
2.000 s –– [316] FILTER TC ––
100.00
% –– [317] OUTPUT POS LIMIT ––
-100.00
% –– [318] OUTPUT NEG LIMIT ––
1.0000
% –– [319] OUTPUT SCALING ––
Parameter Descriptions Parameter Descriptions
ERROR INPUT ERROR INPUT Range: -100.00 to 100.00 %
The input to the PID block. This is normally wired from an error calculation VALUE
FUNC block
ENABLE
ENABLE Range: FALSE / TRUE
This parameter globally resets the PID output and integral term when FALSE.
This parameter must be TRUE for the PID to operate.
INTEGRAL DEFEAT
INTEGRAL DEFEAT Range: FALSE / TRUE
This parameter resets the PID integral term when TRUE.
P GAIN
P GAIN Range: 0.0 to 100.0
This parameter is the true proportional gain of the PID controller. With a P gain of zero,
the PID output would be zero.
I TIME CONST
I TIME CONST Range: 0.01 to 100.00 s
The integral time constant of the PID controller.
D TIME CONST
D TIME CONST Range: 0.000 to 10.000 s
The derivative time constant of the PID controller.
FILTER TC
FILTER TC Range: 0.000 to 10.000 s
In order to help attenuate high frequency noise on the PID output, a first order output
filter has been provided. This parameter determines the output filter time constant.
OUTPUT POS LIMIT
OUTPUT POS LIMIT Range: 0.00 to 105.00 %
This parameter determines the maximum positive excursion (Limit) of the PID output.
OUTPUT NEG LIMIT
OUTPUT NEG LIMIT Range: -105.00 to 0.00 %
This parameter determines the maximum negative excursion (Limit) of the PID output.
OUTPUT SCALING
OUTPUT SCALING Range: -3.0000 to 3.0000 %
This parameter represents an overall scaling factor which is applied after the PID
positive and negative limit clamps.
PID OUTPUT
PID OUTPUT Range: xxx.xx %
The output of the PID function.