Yaskawa 545 PLC User Manual
Page 5
2
HARDWARE
4
General
4/12/94
General
Normally the PLC gateway will be mounted and wired on a MagneTek drive
panel. However, the gateway can be mounted remotely by the customer. In
this case, special consideration must be given to the 120 VAC power source for
the gateway power supply. DO NOT plug the gateway power cord directly
into a wall outlet. Instead, use an isolation transformer and tie one side of the
secondary to the nearest earth ground (the steel structure of the building is
usually a good choice). The ground studs on the MicroTrac drive panels or
cabinets must also be connected directly to a solid earth ground in order to
assure that the gateway enclosure and the drive panels are at the same
potential. Otherwise, erratic operation of the MicroTrac LAN system may
occur.
RD 3056-10