
Chapter 2 Installation
Communications
C O N N E C T I O N S
44
PM130 PLUS Powermeter Series
Figure
2-36 COM2 RS-422/485 connection
The RS-232/422-485 module TERMINALS are for use
only with equipment which has no live parts which are
ACCESSIBLE
The RATING of the insulation of the external
equipment for use with The RS-232/422-485 module,
shall comply according to Installation Category II for
insulation to be suitable for SINGLE FAULT CONDITION
The external equipment TERMINAL connection type
is normally terminal block for wire size 14 AWG (up
to 1.5 mm²) – RS-422/485 port and DB9 male-to-
female cable more than 22 AWG (0.3mm²)
The type of equipment that might be connected to the
TERMINAL is:
o
Personal Computer – PC or LAPTOP