LSU-113DG industrial automation control module DCS PLC system

LSU-113DG industrial automation control module DCS PLC system

Technical data of product parameters

Ground fault resistances between 0 and 29.8 k can be determined and displayed. A display of 29.9 k or 30 k indicates a ground fault resistance >29.8 k. A value of 29.9 k LSU-113DG
or 30 k is displayed when there is no ground fault.
A whole number between 100 and 111 is displayed for the
fault code in cases when it is not possible to compute the
ground fault resistanceWhen the input ‘AdjCoupCInp’ is enabled, 133.00 is displayed initially until the coupling capacitor has been computed. This can take a maximum of 10 s after which the value
measured for C is displayed.
During normal operation, the value entered for the coupling
capacitor C on the HMI is displayed.When the input ‘AdjRErInp’ is enabled, the error code 133.00 LSU-113DG
is displayed initially until the resistance has been computed.
This can take a maximum of 10 s after which the value
measured for REr is displayed. The value measured for Rf is
97.0.
During normal operation, the value entered for REr on the
HMI is displayed.How accurately Rfr is measured depends on the values entered LSU-113DG
for REr and C. Therefore check the settings and correct them if
necessary by connecting resistors between 100 and 10 k
between the rotor and ground with the generator at a stand still.
The protection function provides a convenient way of setting
these two parameters in the software by switching its mode using the input ‘AdjRErInp’ or ‘AdjCoupCInp’. In this mode, the settings of the parameters ‘REr’ and ‘C’ are calculated with the aid
of simulated ground fault resistances.Rotor shift is detected by monitoring the voltage Ucos which is
the component of the voltage in phase with the current.
If the generator is faster than the power system, the rotor
movement in the impedance and voltage diagram is from right to
left and generating is signalled. If the generator is slower than
the power system, the rotor movement is from left to right and
motoring is signalled (the power system drives the generator as
if it were a motor).
The movements in the impedance plain can be seen from Fig.
3.5.26.1. The transient behaviour is described by the transient
e.m.f’s EA and EB, and by X’d, XT and the transient system impedance ZS.

Product picture display

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Introduction to main products

Focus on DCS, PLC, robot control system and large servo system.

Main products: various modules/cards, controllers, touch screens, servo drives.

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This article from the temporal Ming sheng automation equipment co., LTD.,

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