PR electronics 2286 Handbuch Seite 26

1.6 dt3 - Requested time interval between the samplings in s * 1000.
Possible selections are 0...003 s * 1000.
1.7 dt0 - Requested time interval between the samplings in s.
Possible selections are 0...999 s.
1.6 + 1.7(dt3 + dt0) The sum of the 2 parameters.
Possible selections are 0.02...3600 s.
Menu 5.1 = { 5: comparator }
1.1 nEU - Neutral zone in % of the input span.
Possible selections are 0.00...100%.
1.2 HSt - Hysteresis in % of the input span.
Possible selections are 0.00...100%.
Menu 5.1 = { 6: trip amplifier }
1.1 tF1 - Trip function for UP relay.
Possible selections are increasing / decreasing or window.
1.2 tF2 - Trip function for DOWN relay.
Possible selections are increasing / decreasing or window.
1.3 nE1 - Neutral zone in % of the input span for UP relay.
Possible selections are 0.00...100%.
1.4 nE2 - Neutral zone in % of the input span for DOWN relay.
Possible selections are 0.00...100%.
1.5 HS1 - Hysteresis in % of the input span for UP relay.
Possible selections are 0.00...100%.
1.6 HS2 - Hysteresis in % of the input span for DOWN relay.
Possible selections are 0.00...100%.
2.0 InA - Setting of signal input A.
2.1 IAL - Setting of 0% input signal.
Possible selections are current 0.0...20.0 mA, or voltage 0.0...10.0
VDC.
For modules with a Pt100 input, the valid 0% temperature is
-99...850°C.
2.2 IAH - Setting of 100% input signal.
Possible selections are current 0.0...20.0 mA, or voltage 0.0...10.0 VDC.
For modules with a Pt100 input, the valid 100% temperature is
-99...850°C.
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2.3 UI - Selection of current / voltage input.
Possible selections are I - current input, or U - voltage input.
Selection of I for current, or U for voltage input. For modules with a
Pt100 input, this menu has no function.
See the hardware programming for correct jumper setting.
3.0 Inb - Setting of signal input B.
3.1 IbL - Setting of 0% input signal.
Possible selections are current 0.0...20.0 mA, or voltage 0.0...10.0 VDC.
3.2 IbH - Setting of 100% input signal.
Possible selections are current 0.0...20.0 mA, or voltage 0.0...10.0 VDC.
3.3 UI - Selection of current / voltage input.
Possible selections are I - current input, or U - voltage input.
Selection of I for current, or U for voltage input.
See the hardware programming for correct jumper setting.
4.0 OUt - Setting of relay function.
4.1 On1 - Setting of UP relay function.
Possible selections are On = N.O., or OFF = N.C. relay function.
4.2 On2 - Setting of DOWN relay function.
Possible selections are On = N.O., or OFF = N.C. relay function.
5.0 APP - Selection of function.
5.1 FUn - Selection of function.
Possible selections are:
001 = PID on/off controller:
The controller controls the time interval between the active relay out-
puts whereas the ON time of the relays is set by the parameter Tp.
When the process value is outside the proportional band, the UP /
DOWN relay is permanently activated. When the process value is
within the proportional band, the UP / DOWN relay will be de-acti-
vated within a variable interval depending on the distance from the
setpoint. The neutral zone is the percentage On time (Tp%), where no
function is required on the output.
In a correctly tuned PID controller the constant error will be elimi-
nated. This means that at a correctly tuned Xp, Ti, Td, and Tp a regu-
lation accuracy can be obtained close to what the process value can
be measured to. It is therefore important that the proportional band
Xp, the integrating time Ti, the differentiating time Td, and the pulse
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