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0913000-J0 Rev D
Digital Inputs
The L-ADIO can accommodate up to eight digital input channels, D1 – D8. Each channel responds to a zero or
system voltage potential at the input to activate or deactivate the appropriate condition.
These channels can monitor digital alarm/control signals from rectifiers, converters and many other types of
equipment.
An additional digital input, “EXT” is reserved for monitoring an external LVD override.
Alarm and Control Output Relays
Each L-ADIO contains twelve Form C alarm output relays to extend alarms and to control external apparatus.
Each internally generated alarm or control signal may be mapped to any one of the 12 relays, several signals may
be mapped to just one relay or none at all.
LED Indication
Each L-ADIO contains three LEDs for peripheral status indication.
LVD – Yellow
=
LVD Override Engaged
Power – Blue =
Power present to device
Comms – Green
=
L-ADIO has been acquired by CXC HP
Front Panel Reset Button
A reset button is located on the front panel. It takes approximately 15 seconds before the unit is reacquired after
pressing the reset button.
During a reset condition, the L-ADIO will keep relays in their last known state to prevent false alarm notifications
and possible changing system LVD states.
CAUTION – Pressing the reset button will cause the L-ADIO to lose communication with the controller.
LVD Override
An LVD Override button is provided to keep any relays assigned to LVD function in a static state. The override
function should be used whenever performing controller maintenance such as test relay functions, or when re-
placing a CXC HP controller.
To engage the LVD override function, press and hold the button for three seconds. A yellow indicator LED will sig-
nal that the override is engaged. To restore back to normal LVD operation, press and hold the LVD button again
for three seconds.
4.5.2 6I-ADIO
The 6I-ADIO is an analog input peripheral providing six isolated shunt inputs. The 6I-ADIO communicated on
CAN bus to the CXC HP controller and provides access to shunt inputs via the controller.
Figure 10 — 6I-ADIO Power Module
