Chapter 2 Installation Communications Connections
PM130 PLUS Powermeter Series_Installation Operation and Manual 49
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
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