Lucent Technologies Lineage
®
2000 ECS-6U Controller J85501E-1
Issue 4 August 1998
Product Description 2 - 13
A slide switch (SW409) or jumper (P401) is available on the
CP4 display board to set a decimal point after the third digit. For
maximum plant currents of 999A or less, place the jumper or
slide switch in the decimal position (DEC); for currents over
999A, place the jumper or slide switch to the no decimal position
(NO DEC). See Figure 2-3.
Ammeter Scale
Plant shunts are available with standard full-scale dc output
voltages for a variety of full-scale dc currents. The signal from
the shunt in any Lineage
®
2000 battery plant is a 0 to 50 mV dc
voltage proportional to the load current. The controller may also
be used in a plant that is equipped with other than a 50 mV shunt,
e.g., 100 mV, as long as the shunt is located in the distribution
return bus. A shunt isolator circuit is required in applications
where the plant shunt is located in the distribution power bus
(hot lead), or if the shunt size is not compatible with the
controller (see “Shunt Isolator Circuit” in Sections 2 and 4). See
Table 4-C for a listing of compatible shunts.
The ammeter scale for the particular plant shunt size is selected
by DIP switches on the 113A2. Scales are provided for the most
common shunt ratings and range from 6 amperes per millivolt to
160 amperes per millivolt (See Section 4, “Hardware Setup” for
details.)
Front Panel Test
Jacks
Test points are provided on the front panel so that the plant
voltage may be checked with the user's meter. The accuracy of
the LCD voltmeter on the front panel, at 0.05%, is better than
that available with most hand-held meters. The test points are
current-limited against accidental short-circuits by test probes.
Rectifier
Sequence
Control Interface
When the battery plant's ac power is backed up by an engine
alternator of limited capacity, it is often necessary to control the
number of rectifiers on line during a commercial ac outage. To
avoid stalling the engine during start up or overloading it at
steady-state, it may be necessary to turn off rectifiers
temporarily until the engine comes up to speed. This operation
of turning rectifiers off and back on during engine start up is
called rectifier sequence control.
The ECS-6U controller may be connected to the four output
signals (TR1, TR2, TR3, and TR4) provided by a Rectifier
Sequence Controller, such as Lucent Technologies model