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Section 3: Front
Panel Connections, Controls, and Indicators
The front panel of each EDP Double Conversion UPS contains various connectors, controls, and indicators. These items
are described as follows. See figure 3-1 and 4-1 for connector locations. Further details regarding use of controls and
indicators may be found in the
Startup and Operation
section of this manual.
Controls
:
INPUT CIRCUIT BREAKER
: 30-amp circuit breaker protects input circuitry and wiring. This circuit breaker is
also used as an AC switch to apply and remove input power to the power supply. Input breaker is marked
“
ON
”
and
“
OFF
”
for clarity.
Connections
:
POWER CONNECTOR
: The power supply contains a single Power connector located in the upper middle of the
front panel. The mating CPC Series 3
®2
circular plastic connector provides the means for connecting both input and
output power to the appropriate power terminal block buses in the cabinet. The Power connector contains four
conductors. Black represents utility line Hot. White represents Neutral. Red represents Output Hot. Green represents
Ground. The internal Input and Output circuits share the Neutral return path and Ground conductors.
BATTERY INPUT
: Anderson
®2
-type connector: used for connecting the external battery string to the power supply.
BATTERY TEMPERATURE PROBE
: RJ-11 connector: provides connection the external temperature probe for
temperature compensated battery charging.
RELAY / TIMER CONNECTORS
: On Shore Tech OSTTJ
®3
9 pin terminal blocks: allows for external alarm
reporting to a conflict monitor for the five, dedicated dry contact alarm relays. Each relay has a set of three pins.
NOTE
: The first three pins from the left are unmarked and reserved for future use.
Pin 1
is Normally Open (
NO
).
Pin 2
is Common (
C
).
Pin 3
is Normally Closed (
NC
).
ETHERNET COMMUNICATION PORT
: RJ-45 connector: provides connection to DOT/ITS network interface.
Fig. 3-1 Power Supply Front Panel Detail
2
CPC Series 3 is a registered trademark of TE Connectivity Ltd, Berwyn, PA
3
OSTTJ is a registered trademark of On Shore Technology Inc, Tempe, AZ
FRONT PANEL DISPLAY
WITH BUTTONS
POWER
CONNECTOR
BATTERY
INPUT
CONNECTOR
DUPLEX
OUTLET
INPUT
BREAKER
TEMPERATURE
PROBE PORT
DEDICATED RELAY
CONTACTS AND
ETHERNET PORT
