Chapter 2 Installation
Communications Connections
40
PM135 Powermeter Series
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 III 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
GPRS/GSM modem module – COM2 GPRS connection
A GSM/GPRS modem module can be connected to the meter COM2 port to
provide communications with the remote MODBUS/TCP server via a
wireless GPRS network.
Figure
2-33: GSM/GPRS modem Module
The GSM/GPRS SIM must not have any incoming voice call.
The customer must require from the Service Provider for DATA
services only
The GPRS modem module can be equipped with two different
antennas: internal Antenna for installation into plastic closet or
no-metallic environment. For metallic installation use external
antenna
See
Setting Up GPRS Network
in Chapter 5 for information on configuring
GPRS communications in your meter.
