Cordex® 24-400W 19” Integrated Shelf Installation and Operations Guide | 6 - Wiring and Connections
Table 4.
Voltage Level Definitions for Digital Inputs
V
Voltage Level (Vdc),
Considered As “0” (Off)
Voltage Level (Vdc),
Considered As “1” (On)
0 - 60 (System Voltage Setting)
0 to 3V
9 to 60V
Alarm Relay Outputs
Terminals provide contacts for extending various alarm or control signals. Each relay output can be wired
for NO or NC operation during an alarm or control condition.
Figure 11.
Relay Connections
NO
Normally
Open
Normally
Closed
Common
C
NC
Relays can be programmed to energize or de-energize during an alarm condition (see controller software
manual). When the controller reset button is pressed or power is lost, all relays de-energize.
These relays could be used for additional external LVD contactor control; however, this would not provide
the redundant LVD control as with the assigned output pins described below.
LVD Control (Load Disconnect or Battery Disconnect)
The disconnect option is controlled by and connected internally to relay K1, when applicable.
LVD Inhibit
Should it be necessary to remove a CXCI series controller, the customer connection board (on the rear of
the shelf) provides shorting pins (JP2) to inhibit (or override) the LVD Control function.
See the customer connections drawings.
If the LVD is controlled on NC contacts (factory default for LVD option), then JP2 pins 1 and 2 must be
shorted together to maintain LVD operation. If the LVD is controlled on NO contacts, then pins 2 and 3
must be shorted together. For normal operation, the factory-supplied shorting jumper should be left on
pins 3 and 4.
LVD Control Alternative
The LVD Control functions can be hardwired directly from an alarm output relay to an external LVD
contactor (or panel). See Controls Menu Defaults in the controller software manual.
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