Compact Electric CDMR-51 Podręcznik - Strona 9
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Drukuj stronęLine Monitoring Relay CDMR-51
Ba>:
f<<, f<, f>, f>>:
PS>:
Note: If the line voltage is used as supply voltage a correct storage of these data cannot be guaranteed in case of total
line drop out.
There are three more menues in the "Event Monitor" chain, showing currently starting functions, currently tripping functions and
currently energized output relays.
External blocking input "B"
Depending on the parameter value stored in the menue "Special Settings \Ext. Blocking U,f" the external input affects the
CDMR-51 operation as follows:
„Ext.Blocking U,f"
0 ............
1 ............
2 ............
.
Self-monitoring
DATA ERROR
Parameter No:xxx
The number "xxx" in the display corresponds to the parameter number in the left column of table 1. If two numbers are
listed for one parameter, the first number refers to the corresponding star-type voltage, the second one to the corre-
sponding delta voltage. In the case of a checksum error of this kind, elimination may be successful by entering the pa-
rameter value once again (also in the case the displayed parameter value is correct).
Parameter numbers 91 to 97 are used for internal scaling. In this case the unit has to be returned to the factory.
The K5 control circuit is desiged to perform a watchdog function. If the K5 is configured as negated, it will be de-
energized not only in case of a data error or power supply failure, but also in case of a controller hardware failure.
Additional or alternative to self-monitoring the K5 can be assigned to any other monitoring function without restriction.
CDMR51e_man_A11.doc
/ User Manual
unbalance voltage
line frequency
phase shift values in L1, L2 and L3
Effect
Blocking only the Phase Shift PS>
Blocking effect to PS>, U<<, U<, f<<, f<, f>, f>> and Ba>.
If blocking is released and a line fault present, tripping is performed after the time delay
programmed for the corresponding monitoring function.
Blocking of all monitoring functions. If blocking is released and a line fault present, tripping is
performed after the time delay programmed for the corresponding monitoring function.
The relay has a self-monitoring program for error detection in the data memory (checksum er-
rors) which in the error case displays a message "DATA ERROR Parameter No. xxx". If the pa-
rameter "Selfmonitor.->K5" is set, the output relay K5 is changed to the alert state.
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