Operating instructions

70
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
rms
U
2
Voltage output, U
2
rms
I Current output, I
rms
I
2
Current output, I
2
rms
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
P
U
Load
I
Load
P
U
Load
I
Load
Load resistance increases
Effective
limitations
control
U
U
rms max
larger =
=
smaller
smaller
larger
larger
=
=
smaller
smaller
smaller
smaller
=
=
larger
larger
smaller
I
rms max
P
max
*
I
rms max
P
max
*
U
rms max
P
max
*
U
rms max
P
max
*
smaller
=
=
larger
smaller
smaller
U
rms max
I
rms max
I
rms max
U
2
(UxU)
I
I
2
(IxI)
smaller larger = larger
I
rms max
U
rms max
smaller=
P
max
P *
limit
Tab. 1 Behaviour with load change * (H RLP)
2.4 Indications
2.4.1 LED indications
The LEDs on the front signal the following states:
• ON green operating indication, power supply for controller device
• PULSE INHIBIT red pulse lock active
• LOAD FAULT red fault present
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).