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Galvanically isolated control inputs di1/di2 (configuration r Con4 and Con3)
A separate active voltage signal is required for both inputs:
HIGH = +24 V (15...30 V) LOW = 0 V (-3...+5 V) current consumption approx. 5 mA
Priority di1/di2 = LOW i di1/di2 = HIGH
Ü
Outputs active
Control output = Y i control output = Y2
*
Automatic mode
Ö
Internal set-pnt. W i ramp ( SP2)
ä
Internal set-pnt. W i program ( SP2... SP11)
ä
#
Internal set-pnt. W i external set-point Wext
Local
Local mode: Values can be changed with the keys.
Remote mode: Values can be changed via the digital interface only. By means of the
keys, the values are still readable.
Analog input 2 (0/4...20 mA, Ri approx. 170 [, configuration r Con4 and Con1)
Following functions can be selected: 2nd input for ratio control (X2) or external
set-point (Wext) or position feedback (Yp)
Optimizing aid (manual adjustment of control parameters)
Step response of process
Parameter Control
pb1 higher: increased damping
lower: reduced damping
higher: increased damping
Ti
lower: reduced damping
higher: increased damping
Td
lower: reduced damping
* Increase Pb1, if line-out oscillates.
i outputs inactive
i manual mode
i remote (W2 lit)
y = Correcting variable
Yh = Output range
Tu = Delay time (s)
Tg = Recovery time (s)
Vmax = Xmax = {x
Tg
{t
= Max. rate of
increase of process
value (°C/s)
Xmax = Maximum process
value
Xh = Control range
= InH - InL
Disturbances
slower line-out
faster line-out
slower line-out
faster line-out
stronger reaction
weaker reaction
Priority of operating modes
Ü Outputs inactive
* Manual mode
Ö Y2 active (parameter)
ä Sensor error
# Automatic mode
Controller characteristics
K = Vmax . Tu . 100 %
Xh
2-/3-p.-contr: t1 or t2 ß 0,25 . Tu
3-p.-step.contr.: tt = actuator response
Control action Pb1 [%] td [s] ti [s]
DPID / DPI 1,7 . K
PD 0,5 . K
PI 2,6 . K
P
3-p. step. contr. 1,7 . K
Start-up
slower reduction of energy
faster reduction of energy *
slower change of energy
faster change of energy *
earlier reduction of energy
later reduction of energy *
Control parameters
2 . Tu 2 . Tu
Tu
0 = Î
6 . Tu
0
K
0
0 = Î
2 . Tu
Tu
13
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