Power Connection; Ethernet And Usb Connections - Mettler Toledo IND780 Guide D'installation

2.6.1.1.

Power Connection

A permanently attached line cord supplies AC power to the harsh enclosure version of the IND780
terminal. The panel mount enclosure does not provide an AC power cord – it is designed to have AC
wiring connected to the AC power connector, which is plugged into the mating connector on the rear
of the chassis. Figure 2-29 shows the connector and indicates the correct assignments for neutral,
ground and line wires.
Power connector screws should be tightened to between 4.4 and 5.3 inch-pounds (0.5 and 0.6
Newton-meters) of torque.
No voltage or frequency settings are required since the terminal includes a universal power supply
that operates from 100 to 240 VAC.
2.6.1.1.1. Power Requirements
The terminal requires 100 to 240 VAC (at 400 mA maximum) with a line frequency of 49 to 61 Hz
of power.
2.6.1.2.

Ethernet and USB Connections

The IND780's Ethernet connection provides a 10/100 base T connection (10/100 Mb) via a
standard RJ45 connector.
2-18
METTLER TOLEDO IND780 Installation Guide
Figure 2-29: Power Connector, Panel Mount Enclosure
The integrity of the power ground for equipment is important for both safety and dependable
operation of the terminal and its associated scale base. A poor ground can result in an unsafe
condition should an electrical short develop in the equipment. A good ground connection
minimizes extraneous electrical noise pulses. The IND780 should not share power lines with
noise-generating equipment. To confirm ground integrity, use a commercial branch circuit
analyzer. If adverse power conditions exist, a dedicated power circuit or power line conditioner
might be required.
FOR CONTINUED PROTECTION AGAINST SHOCK HAZARD CONNECT TO PROPERLY GROUNDED
OUTLET ONLY. DO NOT REMOVE THE GROUND PRONG.
WARNING
64057253 | 14 | 08/2014