Controller
The output signal is limited to the voltage set point. The current set point of the power supply is permanently set to
I
soll
. In UIR mode the voltage is regulated while the current is fixed.
C
ONTROLLER PARAMETERS
common differential equation of a PID controller:
E
Controller deviation
Kp
Proportional coefficient
Tn
Reset time
Tv
Derivative time
Since the digital controller is a discrete-time system, the integral is replaced by a summation and the differential by a
difference:
The following equation puts the controller into practice within the software:
Parameters P, I and D are calculated as follows:
Controller parameters can be programmed via digital interface using the command
REGLER
.
Ts
Sampling time
Ts
Sampling time = 300 us
( )
⋅
∫
dt
de
Tv
+
dt
t
e
Tn
+
e
Kp
=
y
1
y
=
0,1 P e
i
+
0,001 I
∑
m
= −
∞
m
=
i
e
m
+
0,1 D
(
e
i
−
e
i
−
1
)
P
=
10 Kp I
=
1000 Kp Ts
Tn
D
=
10 Kp Tv
Ts
(
)
−
−
−∞
∑
1
i
i
i
=
m
=
m
m
i
e
e
Ts
Tv
+
e
Tn
Ts
+
e
Kp
=
y
Summary of Contents for RS 232
Page 2: ......
Page 3: ......
Page 4: ...Software version V21 June 2014 ...
Page 7: ...Technical Specifications ...
Page 10: ...Technical Specifications 6 TECHNICAL DRAWING ...
Page 51: ...Notes NOTES ...
Page 52: ...Notes 48 ...
Page 53: ...Notes ...