Alpha Technologies Cordex 48-1kW 19 - Manual (Page 31)

Argus Technologies Ltd. 030-713-C0 Rev A WC
Printed in Canada. © 2008 Argus Technologies Ltd. ARGUS and CORDEX are trademarks of Argus Technologies Ltd. All Rights Reserved. Page 17 of 23
Figure 8–Showing digital input connection method
6.11.2.2 Programming the Digital Input
The digital input channels can be programmed for “active high” or “active low.” Active high
indicates “alarm on the presence of a ground signal” and active low indicates “alarm on the
removal of a ground signal.” See CXC Software manual for detailed instruction on
programming.
Voltage Range (VDC)
Voltage Level (VDC)
Considered As “0” (Off) Voltage Level (VDC)
Considered As “1” (On)
0—60
(system voltage setting)
0—3 18—60
Table B–Voltage level definitions for digital inputs
6.11.3 Analog Inputs
CAUTION: Ensure the correct polarity is used for all input cable terminations.
The analog input channels are used to monitor various types of electrical signals. Some of the analog channels
are reserved for specific signals, while others are designated as general-purpose inputs, which accommodate
various types of analog signals. The input cables should be bundled together and routed through the entry holes
of the shelf, if applicable.
The Battery -48V should be connected at the battery system voltage terminal for CXC reference when a battery
disconnect device is used. It is critical to CXC operation as it ensures a source of power to the CXC should the
disconnect device open the circuit.
6.11.3.1 Voltage
Voltage Input #1 (load voltage per CXC software) terminals (V1) on the shelf provide
connections to an optional secondary voltage input.
Voltage Input #2 (battery voltage per CXC software) is wired internally (V2) to the rectifier output
voltage of the shelf. This is used as the reference for system alarming (such as high voltage)
and control (such as low voltage disconnect).
6.11.3.2 Current
Current Input #1 (discharge or load current per CXC software) terminals (I1) are available for
customer connection as required.
6.11.3.3 General-Purpose
Terminals provide connection pairs for various analog inputs such as temperature sensors.
These are configured at the time of ordering. The configuration determines whether the signals
allowed are to be bipolar (may vary in either polarity from zero; e.g., +/-60VDC) or unipolar (may
vary positive from zero; e.g., 0 to +60VDC). The CXC software is pre-configured to monitor
converter voltage through input channel GP1.
Temperature Sensor
Temperature Probe input channels provide connections for temperature sensors. A voltage is
supplied to these terminals for sensor measurements.