Start-up Manual
89475/119 ETM
32
Duplomatic MS S.p.A.
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PT1 (timing of the controller)
Command
Parameter
Unit
Group
PT1_1
X
PT1_2
X
X
= 0… 30
0
ms
POS_1
POS_2
This parameter can be used to change the internal timing of the control function.
Hydraulic drives are often critical to control, especially in case of high speeds and very fast valves.
The PT1 filter can improve the damping rate and allows therefore higher loop gains.
Requirements for the use are: The natural frequency of the valve should be equal or higher than
the natural frequency of the drive.
OFFSET (correction of valve zero-offsets)
Command
Parameters
Unit
Group
OFFSET_1 X
OFFSET_2 X
x = -
4000… 4000
0,01 %
POS_1
POS_2
This parameter is entered in 0,01% units.
The offset value is added to the output value. Valve zero-offsets can be compensated with this
parameter.
