Power Connection - Mettler Toledo IND780 Installationshandbuch

IND780 Installation Manual

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.
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-
2-18
Sockets for Option Boards
Figure 2-28: Wiring Connections, Top View, Panel Mount Enclosure
Figure 2-29: Power Connector, Panel Mount Enclosure
Sockets for POWERCELL PDX Interface Board
Socket for POWERCELL MTX Interface Board
POWERCELL MTX Interface
Ground Wire Connection
USB
Ethernet
Factory Comm
COM1
COM2
PLC Interface
Module Location