Proface LT3300 - 5.7 All-in-One HMI" - Manual (Page 74)

Chapter 4 Installation and Wiring
4-7
4.2 Wiring Precautions
This section describes the procedures and precautions for wiring power cords.
4.2.1 Connecting the Power Cord
To avoid an electric shock, prior to connecting the LT unit’s power cord terminals to the
power terminal block, confirm that the LT unit’s power supply is completely turned OFF, via
a breaker, or similar unit.
Supplying a power voltage other than that specified will damage the power source and the
LT unit.
Since there is no power switch on the LT unit, be sure to attach a breaker-type switch to its
power cord.
When the FG terminal is connected, be sure the wire is grounded.
• When the FG terminal is connected, be sure the wire is grounded. Not grounding
the LT unit will result in excess noise and vibration.
• The SG and FG terminals are connected internally in the LT unit.
When connecting the SG wire to another device, be sure that the design of the
system/connection does not produce a shorting loop.