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| Operation & Maintenance Instructions TOPAX L1/L4/L5 | Controller Unit Settings
6. Controller Unit Settings
Select between ON/OFF-Controller, P- or PI-Controller, set points setting, P range and
I-gain range for two switch points.
Setting frequency, pulse/pause times, and hysteresis; presetting of effective direction.
Presetting of a delay time before control activation after separation from power supply.
For control functioning, it is imperative that the set points and effective direction be set.
This means you must determine which values you want to achieve with the metering and if
the metering will increase or decrease the measurement value.
For control implementation, you can select from three controller variants:
ON/OFF-Controller
The ON/OFF controller switches ON when a switch-point threshold is exceeded and goes
OFF when a threshold is under-run, or vice versa, depending on effective operating direc-
tion. Metering is therefore always carried out at 100% (ON) or 0% (OFF). A hysteresis can
be preset as one of the Contr. settingss.
P-Controller
The P-Controller or Proportional Controller provides for metering reduction upon approa-
ching of the set point, proportional to control deviation. This always occurs when using the
power output as control output, when using the relay either via reduction of the switching
frequency (pulse-frequency Controller) or via reduction of the time span of a preset switch
frame with the relay CLOSED (pulse-pause controller). Setting of the P range is required
and, depending on the application, the setting of the pulse frequency, pulse + pause time
and minimum pulse parameters.
PI-Controller
The PI-Controller is a P-Controller with an additional I-function. Set-up is carried out as per
the P-Controller, whereby the additional setting of a Integral time, corresponding to the “I”
integral gain, is also required. The “I” gain locks on later than the P-Controller and princi-
pally eliminates residual control deviation, which is always present with the P-Controller.
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Set points
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Basic settings
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Contr.l Settings
Main menu
Basic settings
