Switching Frequency - janitza Prophi Operating Instructions Manual

Reactive Power Controller

Switching frequency

The switching fre-
quency determines,
how often per second
a transistor output may
be switched at maxi-
mum.
Possible switching frequencies are:
0,1Hz, (preset)
0,2Hz,
0,5Hz,
1,0Hz,
10,0Hz and
50,0Hz.
The delay time between two switchings of transistor
outputs is fixed to a minimum of 70ms, except for
"50.0Hz".
Switching frequency 0,1Hz
If a switching frequency of 0,1Hz is set, a transistor
output is switched in and off within 10 seconds one
time at maximum.
Switching frequency 10Hz
If a switching frequency of 10Hz is set, a transistor
output is switched in and off 10 times per second at
maximum.
Switching frequency 50,0Hz
The time from a change in signal frequency till a
switching of a transistor output takes a maximum of 20
ms. The time between two switching's takes a maximum
of 50 ms. If a switching frequency of 50 Hz is adjusted
then the serial interface is out of operation
= Key 1
Hz
Prog
= Key 2 = Key 3
Example: Programming switching frequency
Go to the switching frequency using key 3 in expanded
programming. Change to programming mode with key
1. In this example, a switching frequency of 10,0 Hz is
indicated.
The set frequency is
flashing.
Now select the needed
frequency with key 2
and 3.
Pressing key 1 you leave the programming mode and
with key 3 you can continue leafing through the ex-
panded programming.
Attention!
m
If a switching frequency of 50Hz is programmed
for the transistor outputs, the serial interface does
not work!
Hz
Prog
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