Beckhoff KL3403 Series, Документация, Страница: 59 / 65

Appendix
KL3403 59 Version: 3.1.0
6 Appendix
6.1 Error correction
The following table shows typical errors and how to fix them.
Error Cause Remedy
The KL3403 indicates
negative power
consumption, despite the
fact that a consumer is
connected. • The connection of one or several
current circuits is reversed.
• Current and voltage circuits are not
connected correspondingly.
Example: Phase L1 is connected to
the voltage circuit for L1 (
terminal
point 1 [
}
29] ), but the current
transformer connected to phase L1
is connected to I
L2
( terminal point 6
[
}
29] ).
Check the wiring!
An upstream residual
current circuit breaker
trips. A phase is connected to the neutral
conductor. Check the wiring!
They want to measure
DC, but the KL3403 does
not show any meaningful
values. The DC filter of the KL3403 are
switched on (delivery state). Switch off the DC filters for the KL3403
(using the configuration software
KS2000
[ } 41] or the register communication
(register R32.4 [ } 54] )) for measuring
direct voltage and DC.
Measuring inaccuracies
occur with large currents. Overload at the current inputs of the
terminal (see chapter
Measuring error
due to input overload [ } 60] ).
• Use a terminal type with higher rated
current (e.g. KL3403-0010 [ } 19] )
• Use current transformers with a higher
ratio.
Measuring inaccuracies
occur when measuring
low DC voltages. In the range 10 to 20 V, the voltage inputs of the KL3403 exhibit a small non-
linearity (see chapter
Measuring error with DC voltage measurement [
}
63] ).