Alpha Technologies CXPS 48-1.8-M2, 48V Pos Gnd - Manual (Page 34)

Argus Technologies Ltd. 053-991-C0 Rev A WC
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5.10 Signal Wiring Connections for CXCM2
NOTE: To aid the user with installation, frequent reference is made to drawings located at the rear of this manual.
Custom configurations may be detailed within the Argus power system documentation package.
For terminal block connections, the recommended wire sizes are 0.14 to 1.50mm 2 (#26 to #16 AWG) for the
temperature range of 0 to 50 deg. C (as per UL/CSA).
CAUTION: to reduce risk of fire, use only 0.14mm
2
(#26 AWG) or larger wire.
5.10.1 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. See Figure 11.
Figure 11–Showing relay connections
Relays can be programmed to energize or de-energize during an alarm condition (see CXC Software manual).
When the CXC reset button is pressed or power is lost, all relays de-energize.
5.10.2 Digital Inputs for CXCM2
The digital input channels (factory-installed) are used to monitor various alarm and control signals. All input
channels are voltage activated and accept a bipolar (i.e. negative or positive) DC signal directly.
5.10.2.1 Connection Method
Typical Argus systems use the “reset with Hot and trigger with Ground” connection. The digital
input is wired in such a way that the Hot is wired directly into one of the input terminals; e.g.,
negative input for -48V systems. The other input terminal is wired to the Ground (common) of
the system through a relay (dry contact – usually located on the equipment requiring
monitoring). This method (see Figure 12) allows the digital input to receive (or not receive) a
Ground signal on an alarm.
Figure 12–Showing digital input connection method