Moxa Technologies EM-1240-LX user manual Connecting Data Transmission Cables, Connecting the Power

EM-1240-LX User’s Manual Introduction

ATTENTION

Safety First!

Be sure to disconnect the power cord before installing and/or wiring your EM-1240-LX.

Wiring Caution!

Calculate the maximum possible current in each power wire and common wire. Observe all electrical codes dictating the maximum current allowable for each wire size.

If the current goes above the maximum ratings, the wiring could overheat, causing serious damage to your equipment.

Temperature Caution!

Be careful when handling the EM-1240-LX. When plugged in, the EM-1240-LX’s internal components generate heat, and consequently the outer casing may feel hot to the touch.

Connecting the Power

Connect the “live-wire” end of the 12-48 VDC power adapter to the EM-1240-LX’s terminal block. If the power is properly supplied, the “Ready” LED will glow a solid green after a 25 to 30 second delay.

Grounding the EM-1240-LX

Grounding and wire routing help limit the effects of noise due to electromagnetic interference (EMI). Run the ground wire from the ground screw to the grounding surface prior to connecting devices.

ATTENTION

This product should be mounted to a well-grounded mounting surface such as a metal panel.

SG

V-	V+
12-48V

SG: The Shielded Ground (sometimes called Protected Ground) contact is the left most contact of the 3-pin power terminal block connector when viewed from the angle shown here. Connect the SG wire to an appropriate grounded metal surface.

Connecting Data Transmission Cables

This section describes how to connect the EM-1240-LX to the network, serial devices, and serial COM terminal.

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