4 CTUB100-series_D00362_06_M_XXEN/04.2025
LINETRAXX® CTUB100 series
** Test button T:
Internal functional test
Press test button “T” for 5…10 s.
When the LED flashes green quickly, release the button.
Function test begins, varying measured values are
output. Their amplitude depends on the setting of the
detent potentiometer.
After completion of the function test, the LED lights
up green.
Possible cause of error Action
Connection between CTUB…
and CTBC… is not correct
Check connection or disconnect
CTUB… and CTBC… and reconnect
Error after offset calibration
(possibly system not switched
off and therefore DC residual
current too high)
Either carry out an offset calibration
again or clear the error by switching
the device off and on again. either
carry out an offset calibration again
or clear the error by switching the
device off and on again
Supply voltage U
S
incorrect
(±12 V or 24 V)
Apply correct supply voltage U
s
Possible cause of error Action
Detent potentiometer (11) is
not correctly engaged in one
position, but is between two
positions
Engage the detent potentiometer
correctly
Detent potentiometer is not
set correctly, evaluators display
error E.01 (CT error)
Set correct response value on
detent potentiometer
If the fault cannot be eliminated, contact Bender Service.
Wiring
I
Danger of electrocution due to electric shock!
Touching live parts of the system carries the
risk of:
- An electric shock
- Damage to the electrical installation
- Destruction of the device
Before installing and connecting the device,
make sure that the installation has been
de-energised. Observe the rules for working on
electrical installations. Observe the information
on rated voltage and supply voltage specified
in the technical data!
i
Application in railway vehicles/
DIN EN 45545-2:2016!
If the horizontal or vertical distance to adjacent
components which do not meet the require-
ments in table 2 of DIN EN 45545-2 is less than
20 mm or less than 200 mm respectively, they
are to be regarded as grouped. Refer to DIN EN
45545-2 chapter 4.3 Grouping rules.
i
The wires can be routed in any direction.
Connect the device according to the wiring diagram.
Please observe the technical data.
*** Device error
i
CTUB101/102: In the event of a fault, a high DC resi-
dual current (equal to the respective full scale value) is
also output so that the fault is visible on the evalua-
tor.
CTUB105: A fixed residual current is output (see
technical data).
5…10 s
2 s
5 s
varying measured value output
test endsrelease T
test begins
button T pressed
test
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