6
Settings
The setting values are shown by the three
rightmost green digits of the display. The LED
indicator below the setting knob shows, when
lit, the setting value currently being shown on
the display.
U>/U
n
Start value of the U> stage as a multiple of the rated voltage of the relay energizing
input. Setting range 0.8...1.6 x U
n
.
t> [s] Operate time of the U> stage, expressed in seconds, at definite time mode of k>
operation. The required setting range, 0.05...1.00 s, 0.5...10.0 s or 5...100 s, is selected
with switches SG1/4 and 5. At IDMT mode of operation the setting range of the
multiplier k> is 0.05...1.00.
U</U
n
Start value of the U< stage as a multiple of the rated voltage of the relay energizing
input. Setting range 0.4...1.2 x U
n
.
t< [s] Operate time of the U< stage expressed in seconds. The setting range is selected with
switch SG1/8, alternatives 1...12 s and 10...120 s.
Further, the checksum of the programming
switchgroup SG1 is indicated on the display
when the indicator under the switchgroup is
glowing. In this way a check can be made to prove
that the switches have been set and that they
work properly. An example of calculating the
checksum is given in the description "General
characteristics of C-type relay modules".
Selector switches
(Modified 99-12)
When the module has been given single-phase
operation, only U
12
is measured. Additional
relay functions required in various applications
are selected by means of the selector switches of
switchgroup SG1 located on the front panel of
the relay module. The numbering of the switches,
1...8, and the switch positions, 0 and 1, are
marked on the front panel.
Switch Function
SG1/1 Selection of three-phase or single-phase operation.
Three-phase operation when SG1/1 = 0.
Single-phase operation when SG1/1 = 1.
SG1/2 Start time selection for the overvoltage stage U>.
When SG1/2 = 0, the start time is 0.1 s.
When SG1/2 = 1, the start time is 30 s.
SG1/3 Selection of definite time or IDMT mode of operation for the U> stage. At definite
SG1/4 time mode of operation switches 4 and 5 are used for selecting the setting range of the
SG1/5 operate time t>. At IDMT mode of operation switch 4 is used for selecting the inverse
time curve, switch 5 has no function.
SG1/3 SG1/4 SG1/5 Mode of Operate time t> or
operation characteristic curve
0 0 0 Definite time 0.05...1.00 s
0 0 1 Definite time 0.5...10.0 s
0 1 0 Definite time 0.5...10.0 s
0 1 1 Definite time 5...100 s
1 0 0 Inverse time Curve A
1 0 1 Inverse time Curve A
1 1 0 Inverse time Curve B
1 1 1 Inverse time Curve B
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