Alpha Technologies DCP03 300A - Manual (Page 10)

020-702-C0 Rev C WC Page 4 of 16
2.4 Internal Alarm Card
The DCP03 includes a standard alarm card providing a common interface point to internal system I/O
connections, an LVD override switch, and LED indication of breaker trip.
The alarm card provides terminal block access to internal signals such as binary alarms for breaker trip & LVD
open, alarm relay for driving LVD, and analog inputs for current (shunt) and voltage measurements. The terminal
blocks provide a single point of access to these signals for connecting to an external system controller. Refer to
the customer connections (020–702–08) drawing at the rear of this manual for details on terminal block
assignments.
The LVD override switch provides the user with the ability to inhibit or override LVD contactor operation as a
safeguard during controller maintenance. A green LED signals when the LVD is in normal operation mode and a
yellow LED signals when the switch has been placed into the override position.
Figure 3–Internal alarm card
2.5 CXCI I/O Terminal Block (Option)
When using the DCP03 as a distribution solution for use with a 1.8kW rectifier shelf with integrated CXCI
controller, an I/O terminal block can be installed in the UDC front door for front access to controller signals.
The CXCI terminal block kit comes with a 25-pin D-sub wire harness for connection to the back of the 1.8kW
rectifier shelf using the CXCI controller. Refer to the manual for the 1.8kW rectifier shelf (or system).
The internal signals from the distribution center are wired to the CXCI I/O board direct from the internal alarm
board. The remaining relay outputs, digital inputs, and analog inputs are available on the board via terminal
blocks for customer connection of external signals. Refer to the customer connections (020–702–08) drawing at
the rear of this manual for details on terminal block assignments.
LVD override switch
I/O customer connection points
CXCI I/O terminal
block assembly
D-sub wire harnesses
to 1.8kW shelf