E-Mon E-PS-E-RTU-N - Manual (Page 37)

Chapter 2 Installation Communications Connections
PowerSmart+ Power Quality Meter 37
Figure 2-30: COM2 RS-422/485 and 12DI/4RO-RS-422/485 modules connection
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• 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:
− Personal Computer – PC or LAPTOP