AV-300i Version 2 User’s Guide
—————— Function Description ——————
Ch.1
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PID input cfg
Int PID fbk Internal value of the PID section reaction
Int PID draw Draw internal value
Int PID set 0 Setpoint 0 internal value
Int PID set 1 Setpoint 1 internal value
PID gain draw Value of the Setpoint adapting gain (feedback)
PID acc time Acceleration time from 0 to 16384 (Normalized internal value)
PID dec time Deceleration time from 16384 to 0 (Normalized internal value)
PID clamp bot Lower clamp value (see dynamic clamp)
PID clamp top Upper clamp value (see dynamic clamp)
PID input mon
PID fbk mon Monitor for the feedback value (reaction)
PID draw mon Monitor for the active Draw value
PID set 0 mon Monitor for the Setpoint 0 value
PID set 1 mon Monitor for the Setpoint 1 value
PID input Monitor for the Block output value
1.15.3.1 Dynamic Clamp Function
The Clamp value is active only till the error value becomes lower then the set Clamp range. The function is
useful, for example, during starting with dancer which is completely sealed. In this case, the limiting of the
maximum error limits the system reaction speed thus allowing a dancer smooth positioning. After positioning
the dancer, the Clamp stops being active allowing a normal system control.
1.15.4 Integer Proportional Control (PI control)
The Function of this Block is performed by three strictly combined different Blocks. In order to obtain a better
working homogeneity, they have been grouped into the same menu.
The three Blocks are:
PI control block By starting from the line speed reference it states the error sign for the PI Block. It allows to
invert the line direction without performing any operation, controls the signals for the
temporary gain increase at the starting and controls the Integral section Block.
PI Gain scheduler It allows to adapt the PI section gains according, for example, to the coil Diameter.
PI section It is the Block where the PI regulator is performed. The feature of this regulator is a
signal on the output oscillating between two values (Top and Bottom) which can be set.
The output is multiplied by the Feed Forward value. In case of winders/unwinders, as
stated before, the Top limit and Bot limit (Clamp) values are set in order to let this
output represent the Minimum_Ray/Present_Ray ratio.
The PID PI enab src and PID I freeze src
sources allow to select the origin of the enabling signals (enable/
disable) of the PI function and of the freezing signals of the regulator Integral section.
PIGP ref src selects the input signal of the gain Adaptive; the Block function allows to set a three-segment Profile.
In the Block it is possible to select, via an internal selector, three starting multiplication values: Int PID Mtl PI
1, Int PID Mtl PI 2, Int PID Mtl PI 3, internal values which can be set in the
configurations.
The PID Mtl PI 3 src source connects standard the value of Int PID Mtl PI 3.
PID Mtl PI sel 0 and PID Mtl PI sel 1 are the sources selecting the command signals of the internal selector.
According to their condition, it is possible to state a combination determining the equivalent output factor.
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