Alpha Technologies Cordex Controller Panel Mount_Rack Mount - Manual (Page 14)

Argus Technologies Ltd. 018-587-C0 Rev A WC
Printed in Canada. © 2008 Argus Technologies Ltd. ARGUS and CORDEX are trademarks of Argus Technologies Ltd. All Rights Reserved. Page 4 of 19
2.4 Lithium Battery Backup
A removable lithium battery (see Specifications) is included in the system to retain time and date settings upon
power loss or reset.
2.5 Analog Input Channels
The CXC has up to ten analog channels, including up to five voltage inputs or up to four current inputs (see table
in Customer Connections drawing at the rear of the manual). The remaining inputs may be configured (see List
Options) for temperature and general purpose.
2.5.1 Voltage Inputs
Two voltage input channels, V1 and V2, provide monitoring of discharge (load) and charge (battery) voltage. The
CXC software is pre-configured to monitor V1 for load voltage and V2 for battery voltage. V2 is used as the
system reference for rectifier float voltage, low voltage disconnect (LVD), system high voltage alarm, and system
low voltage alarm.
2.5.2 Current Inputs
Up to four current input channels, I1 – I4, provide monitoring of current; e.g., discharge (load) and charge
(battery). The CXC software is pre-configured to monitor I1 for load current using an external 50mV current shunt.
2.5.3 General-Purpose Inputs
The general purpose (GP) input channels monitor various analog signals depending on how the channels are
configured. The configuration determines whether the signals allowed are to be bipolar (may vary in either polarity
from zero, e.g. +/-60Vdc), unipolar (may vary positive from zero, e.g. 0 to +60Vdc), or temperature.
2.5.3.1 Temperature Inputs
When configured as a temperature (T) input channels, a voltage is supplied to these terminals
to power the temperature sensors. They can be used to provide monitoring of battery
temperature or room/ambient temperature. They may also be used for temperature
compensation (temp comp).
2.6 Digital Input Channels
The CXCP and CXCR (panel and rack models) can accommodate up to eight digital input channels (CXCM has
four). 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. Some of these channels are pre-assigned to monitor specific signals. See the Software manual for
more information.
2.7 Alarm and Control Output Relays
Each CXCP or CXCR contains eight standard and eight optional Form C alarm output relays to extend alarms
and control external apparatus. Each internally generated alarm or control signal may be mapped to any one of
the 16 relays, or, several signals may be mapped to just one relay or none at all.
2.8 CXC System Fail Alarm/Relay
The CXC system fail alarm activates because of a major internal failure. During such a condition, the unit will
attempt to reset, but if this fails, an alarm condition will be extended to a relay and the red LED on the front panel
will illuminate. This is a fail-safe signal to the remote monitoring equipment; i.e. alarm will be extended even if
power to the unit is interrupted.