0100037-J0 Rev D
32
User Guide
Cordex HP 2.4kW / 3.0kW Modular Switched Mode Rectifier
6.8.3 Signal wiring connections to L-ADIO board (optional)
For terminal block connections, the recommended wire sizes are 0.823 to 0.129mm
2
(18 AWG to 26 AWG) for the
temperature range of 0 to 50 degrees Celsius (32 to 122 degrees Fahrenheit) (as per UL/CSA).
CAUTION!
To reduce risk of fire, use only 0.129 mm² (26 AWG) or larger wire.
6.8.4 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 15 —
Relay connections in the de-energized state
Relays can be programmed to energize or de-energize during an alarm condition (see the
). When the controller reset button is pressed or power is lost, all relays de-energize.
6.8.5 Digital inputs
The digital input channels are used to monitor various alarm and control signals. All input channels are voltage
activated and accept a bipolar (negative or positive) DC signal directly.
Connection method
Typical 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. For example, the positive input for +24 V
systems. The other input terminal is wired to the Ground (common) of the system through a dry contact relay
usually located on the equipment requiring monitoring. This method allows the digital input to receive or not
receive a Ground signal on an alarm.
Figure 16 —
Digital input connection method
Summary of Contents for Cordex HP CXRF 48-2.4kW
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