System description
19
RCMS460-490_D00067_03_M_XXEN/12.2017
History memory in RCMS460-D, RCMS490-D
The device utilises a history memory for failsafe storing of up to 300 data re-
cords (date, time, channel, event code, measured value), so that all data about
an outgoing circuit or an area can be traced back at any time (what happened
when).
Analysis of harmonics
The analysis of the harmonics of the measured currents can be selected via a
menu item in RCMS460-D, RCMS490-D. There, the DC component, the THF
and the current value of the harmonics (1…40 at 50/60 Hz, 1…5 at 400 Hz) is
displayed numerically and graphically.
3.3 Device variants
RCMS residual current monitoring systems differ depending on the residual cur-
rent monitor version used, RCMS460… or RCMS490….
RCMS460-D
Device version RCMS460-D utilises a backlit graphical display. This version is
used for local display of detailed information about all devices connected to the
bus in the control cabinet. This device can be used to parameterise all RCMS de-
vices connected to the BMS bus and to display all measurement details. Several
RCMS-D devices can be used within one system.
RCMS460-L
Device version RCMS460-L utilises a two-digit 7-segment display where the
address of this device is displayed within the BMS bus. The alarm LEDs indicate
in which measuring channel the response value has been exceeded. Parameters
can be set via an RCMS…D, an
Ethernet gateway (z. B. COM460IP) or a Condi-
tion Monitor (z. B. COMTRAXX CP700).
RCMS490-D/RCMS490-L
The function of the device versions RCMS490-D/RCMS490-L corresponds to
the function described above. In addition, a galvanically isolated alarm con-
tact (N/O contact) is available, e.g. for triggering a circuit breaker in this sub-
circuit when a response value is exceeded.
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