DC Controller
UPC4 Master
User Manual
Page 62/100
©2010. ELTEK VALERE DEUTSCHLAND GmbH. UM_UPC4_V2.00_E_R1.1_2011-01-04
Battery operation
Battery operation (10.1
2) is detected by negative battery current flow. Because of measuring
inaccuracy the threshold should be ≥5% of the shunt value. At (10.14) hysteresis and at (10.13)
delay is to be set.
Isolation measuring
Enabling as well as assignment is set in these menus. At this place the threshold for detecting
isolatio
n error is defined.
Isolation error measuring (
10.15) is only possible at ungrounded systems. The setting should relate to
the nominal voltage of the system, e.g. 48V system 48k Riso. At (10.17) hysteresis and at
(10.16) delay is to be set.
Load
For monitoring of the system voltage also Vmax (10
.18) as well as Vmin (10.19) values can be set.
Parameter (
10.20) and (10.21) define the thresholds of under voltage at which the inverters and
DC/DC converters respectively are switched OFF. At (10.23) hysteresis and at (10.22) delay is to be
set.
Parameter (10.24) de
fines a threshold for the maximum load current. If this value is exceeded, an
accordant event is generated.
ATTENTION! If the battery voltage exceeds the limit at (10.4), all rectifiers get an OFF
command via CAN bus.
ATTENTION! In Systems without static bypass switch (STS/UNB) all inverters get an OFF
command via CAN bus if the voltage value falls below the threshold (10.20).
But if a static bypass is used, it controls the inverters.
ATTENTION! If the voltage value falls below the threshold (10.21) all DC/DC converters get
an OFF command via CAN bus.
6.6.2 Thresh. Gen. par
The UPC4 provides the following general
measurement channels:
6 x voltage
6 x current
6 x temperature
6 x isolation resistance
The measurement sources are
assigned at
"Assignment Measu
" (see section 6.5.1).
The respective general parameter is used
by t
he UPC after the text has been
configured, please see section 6.11.8 "Text
Gen. Param.".
For each individual parameter a "min" (12.3) and "max" (12.4) threshold is available. If they are
exceeded/falled below a respective signal is generated. Hysteresis (12.1) and delay (12.2) are valid
for all general measuring values.
12.1 12.2
12.3
12.4
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