Alpha Technologies Cordex 48-1.2kW - Manual (Page 30)

030-834-J0 Rev A Page 24 of 34
5.10.1 Modem Port
The Modem port is designed for CXCM1 connection to the Alpha Cordex DC Modem (p/n 018-585-20a) via
a front panel DB-9 connector.
CAUTION: Use only the Alpha modem and Alpha-supplied DB-9 (straight through) cable to connect
to the D-sub port on the front of the CXCM1.
5.10.2 Ethernet Port for Network Connection (Standard Network Cable)
The Ethernet port is designed for CXCM1 connection to a user supplied network (TCP/IP secured by user)
via a front panel RJ-45 jack.
Connect to the CXCM1 using a standard network cable. Pinouts are shown in drawing 030-834-08.
5.10.3 Ethernet Port for Local Connection (Crossover Cable)
Local access (e.g. laptop computer) is also possible from the Ethernet port connection using a standard
network crossover cable.
5.11 Signal Wiring Connections
For terminal block connections, the recommended wire sizes are #16 to #26 AWG (1.5 to 0.129mm 2 ) for the
temperature range of 0 to 50°C (as per UL/CSA). Control and sense wires shall be UL approved Style 1015
(for Canadian users, TEW type).
CAUTION: To reduce the risk of fire, use only #26 AWG (0.129mm 2 ) or thicker wire.
Bundle the signal cables together and route them through the entry holes of the shelf.
Figure 12–Signal Wiring Terminal Blocks
5.11.1 Analog Inputs for CXCM1
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.
Voltage (Input) is 0 to 60Vdc. Temp Probe is 0 to 20Vdc with power source.
Voltage
Voltage Input #1 (load voltage per CXC software) terminals on the shelf provide connections to an optional
secondary voltage input. For example, this can be terminated to the load side of an LVD contactor to
monitor load voltage.