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Controlled Value; Controller Response; Led Indications - AEG THYRO-A Operating Instructions Manual

Thyristor power controller.
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2.3.1 Controlled value

The controlled value effective on the load is proportionate to the total set point,
depending on the control type:
Control type
Control value (proportionate to the total set point)
U
Voltage output, U
U
2
Voltage output, U
I
Current output, I
I
Current output, I
2
P
Power output (only with H RLP type)
2.3.2 Limitations
Independent of the voltage output control, limiting current values can additionally be
set (chapt. 3.2.3).

2.3.3 Controller response

If the load resistance changes, e.g. due to temperature effect, ageing or load break,
the values effective on the load change as follows:
Underlying
Load resistance decreases
control
limit
U
U
larger
rms max
U
U
(UxU)
larger
2
rms max
I
I
smaller
rms max
I
I
(IxI)
smaller
2
rms max
P
P *
max
Tab. 1 Behaviour with load change
2.4 Indications

2.4.1 LED indications

The LEDs on the front signal the following states:
• ON
green
• PULSE INHIBIT red
• LOAD FAULT
red
Blinking indications are described in chapter 3.3.
Activation of the integrated semiconductor fuse can be signalled using the K1 fault
indicating relay (undercurrent detection).
70
rms
2
rms
rms
2
rms
Load resistance increases
U
I
P
Load
Load
=
larger
smaller
=
larger
smaller
smaller
=
smaller
smaller
=
smaller
=
smaller
larger
operating indication, power supply for controller device
pulse lock active
fault present
U
I
P
Load
Load
I
=
smaller
rms max
I
=
smaller
rms max
U
larger
=
U
larger
=
I
=
larger
smaller
rms max
Effective
limitations
P
*
max
P
*
max
P
*
rms max
max
P
*
rms max
max
U
rms max
* (H RLP)

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