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Section 4: DISPLAY - FUNCTIONS
After the operating voltage has been switched on, the controller briefly indicates with
description and software-version before changing to automatic operation.
Actual values and symbols of the particular operation state are shown in the display.
In the automatic operation (standard) capacitor steps are automatically switched on or
off to reach the pre-set target cos-phi. This happens when the required reactive power is
higher than the value of the smallest capacitor step.
Example 1: Automatic operation
L1...L3: Individual compensation by single-phase capacitors
AUTO-MODE 1/2
j
cos
0.869 IND
L1
j
cos
0.869 IND
L2
j
cos
0.869 IND
L3
L1
L2
L3
1 2 3 4
Example 2: Automatic operation (Mixed Mode)
L1...L3: phase wise compensation by
single phase capacitors
S:
Three-phase capacitors activated
AUTO-MODE 1/3
L1
control direction
L2
(here: connected-in)
L3
S
active capacitor
branches
1 2 3 4
Example 3: Automatic operation
Measuring in one phase
Controlling of 15 three-phase-capacitors
AUTO-MODE 1/2
j
S
cos
0.917 CAP
S
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Number of switching outputs until end stop.
Here: 15 three-phase capacitors, end-stop: 15
Control direction is symbolized by a
compact arrow:
Connecting-in
Connecting-out
The connecting-in arrow is always
located after the maximum possible
number of stages (end stop)
An open arrow indicates that the
required blocking time (Discharge time)
is running before an impending
switching step
A double arrow symbolizes switching of
several branches
S
The sigma-sign indicates the three-
phase-value (mean-value) resp.
activated three-phase-capacitors
Alarm relay activated
A
(declines in case of error)
S
Message relay activated: "SUPPLY"
U
Message relay activated:"Undercurrent"
H
Message relay aktivated: "Harmonics"
F
FAN-relay: ON
The particular capacitor outputs are
permanently monitored. Inverse display
= capacitor out of range
2
Display of 2nd parameter-set
é
Supply display (i.e.generator operation)
T
2 Target-cos phi activated by timer
nd
nd
é
2 Target-cos phi activated by supply
- 8 -
Prophi
15T-III
®
9
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