Technische Alternative UVR 16x2 User Manual

PID control
114
Parameters
Function quantity
A wide range of function quantities are available, which are applied
together with their unit and their decimal places.
Cycle time
Cycle time = interval between measurements for correction via the
differential value (see Function description / P-I-D values)
Reset
integral counter
(only visible if the
"Corr. var at start" is
unused)
If "No" is selected, PID control starts after enabling with the correcting
variable that was last issued.
If "Yes" is selected, PID control immediately begins after enabling, with
the correcting variable calculated based on the input variables and
parameters
Absolute value ctrl
Mode
Set value abs.
Available for selection: Off
Standard = the correcting variable increases as the actual value
rises
Inverse = the correcting variable falls as the actual value rises
Display of the set value
Differential control
Mode
Set value diff.
Available for selection: Off
Standard = the correcting variable increases as the differential
increases
Inverse = the correcting variable falls as the differential increases
Display of the differential
Event control
Mode
Condition
Activ. threshold
Diff. on
Diff. off
Set value event
Available for selection: Off
Standard = the correcting variable increases as the actual value
rises when event control is active
Inverse = the correcting variable falls as the actual value rises
when event control is active
Available for selection: Act. > threshold, Act. < threshold
Display of the activation threshold
Start differential for the activation threshold
Stop differential for the activation threshold
Display of the set value for control
➢ Each control method can be set to control modes Standard (correcting variable increases
with rising actual value) or Inverse (correcting variable falls with rising actual value) or to
Off (control method inactive).
➢ Event control overwrites results from other control methods. A defined event will therefore
block absolute value control or differential control.
Example: Absolute value control to keep collector temperature constant at 60 °C is blocked
once the cylinder reaches 50 °C at the top = a usable DHW temperature has thus been
reached quickly, and charging of the cylinder can now continue at the full flow rate (and
consequently at a lower temperature). For this to work, the new set temperature entered in
event control must be a value that will automatically result in pumping at full speed (e.g. for
collector sensor = 10 °C).
➢ If the Condition of event control is Act. < threshold, event control will be activated when
the activation value falls below the activation threshold + Diff. off and will be deactivated
again when it exceeds the activation threshold + Diff. on. With this condition, the two Diff.
values are therefore effectively interchanged.
➢ If both absolute value control and differential control are switched off (output: maximum
correcting variable), then, when event control is activated, the control will change over from
the maximum correcting variable to the value for event control.

Technische Alternative UVR 16x2 Specifications

General

Brand	Technische Alternative
Model	UVR 16x2
Category	Controller
Language	English