Proface LT4300M - 5.7 Modular HMI + Control" - Manual (Page 78)

LT Installation
78
Connecting the Power Cord
Introduction
Follow these instructions when supplying power to the unit:
 When the frame ground (FG) terminal is connected, verify the wire is grounded. Not grounding
the unit can result in excessive Electromagnetic Interference (EMI). Grounding is required to
meet EMC level immunity.
 The shield ground (SG) and FG terminals are connected internally in the unit.

Remove power before wiring to the power terminals of the unit.
 The unit uses 24 Vdc power. Using any other level of power can damage both the power supply
and the unit.
 Since the unit is not equipped with a power switch, connect a power switch to the unit’s power
supply.
 Field wiring terminal marking for wire type (75 ° C (167F) copper conductors only).
Power Cord Preparation
Before using your power cord:
 Verify that the ground wire is the same gauge or heavier than the power wires.
 Do not use aluminum wires for the power cord for power supply.
 If the conductor end (individual) wires are not twisted correctly, the end wires may either short
loop to each other or against an electrode. To avoid this, use D25CE/AZ5CE cable ends.
 Use wires that are 0.75 to 2.5 mm 2 (18 to 12 AWG) for the power cord, and twist the wire ends
before attaching the terminals.
 The conductor type is solid or stranded wire.
 To reduce electromagnetic noise, make the power cord as short as possible.
Power Plug
Connecting the Power Cord
The table explains how to connect the power plug:
Connection Wire
+ 24 Vdc
- 0 Vdc
FG Grounded terminal connected to the unit chassis
Step Action
1 Confirm the power cord is not connected to the power supply.
2 Check the rated voltage and remove the "DC24V" sticker on the DC power
supply connector.
3 Remove 10 mm (0.39 in.) of the vinyl membrane off the ends of the power code
wires.
4 If using stranded wire, twist the ends. Tinning the ends with solder reduces risk
of fraying and ensures good electrical transfer.