DELTA 600
Battery charger / DC Power Supply
©2017 Vertiv Co. All rights reserved | DELTA 600 | 6012928 | Notice utilisation | v05 | 05.17
3 START UP
Battery charger mode
By default, the DELTA module is configured in battery charger mode (see table). The voltage is preset for
maintenance-free lead batteries (VRLA) at 2.27 V per cell. It is possible to select the adjustment for vented lead-
acid batteries (VLA) by placing switch 1 to the "2.23 V/cell" position. If the desired charging voltage is different
from these values or if a Nickel-Cadmium battery is used (the customary charge voltage is 1.42 V per cell),
adjustments can be made by placing switches 2 and 3 in "Us Manual" and "Internal U" position and by using the
"Adjust Floating" voltage adjustment potentiometer.
Power Supply mode
To use the DELTA module in power supply mode, set switches 2 and 3 to the "Us Manual" and "Internal U"
position and use the "Adjust Floating" voltage adjustment potentiometer (see § Specifications).
4 ADVANCED FUNCTIONS
BOOST function
To charge the batteries, it may be useful to use the BOOST function to raise the charge voltage for a few hours.
This function is activated by connecting an external potential-free contact to the “BOOST” terminals 4-5. The
module's BOOST function is enabled for a 12-hour period if the contact closes (pulse) for at least 300 ms. If the
contact remains closed for a longer time, the module automatically returns to floating mode. The boost can be
interrupted if the contact is closed again (pulse). In the "Us Auto" position, the boost function raises the charging
voltage by 3.8% if switch 1 is in the 2.27 V/cell position, and 5.4% if switch 1 is in the 2.23 V/cell position. In "Us
Manual" position, the boost voltage is adjusted using the "Adjust Boost" potentiometer. The charging voltage
can be adjusted from the value of the floating voltage to the maximum voltage (15 /30 / 60 Vdc). The green LED
flashes intermittently during the boost. The boost function is deactivated when the configuration switches 2 and
3 are set to "Us Manual" and "External U", respectively (voltage adjustment via the external potentiometer).
Battery TEST function
In order to ensure that the battery is capable of supplying the load, the module features a TEST function that
drops the voltage to 2 volts per cell (standby voltage), i.e. 12 V, 24 V or 48 V depending on the module. This
function is activated by connecting an external potential-free contact to the “TEST” terminals 6-7. The module's
TEST function is enabled for 30 seconds if the contact closes (pulse) for at least 300 ms. The green LED
flashes intermittently during the test. If the battery voltage drops to the standby voltage before the end of the
test, the module returns to the floating voltage and reports a fault (memorized fault). The red LED flashes and
the fault report is activated. The battery test function is deactivated when the configuration switches 2 or 3 are
set to "Us Manual" and "External U", respectively (voltage adjustment via the external potentiometer).
