User's Guide

Table Of Contents
EVR-VPXDOC-0036 VP Series 2000 User Guide
DIVIGRAPH
Rev 2.4.1
September 2021
Proprietary & Confidential Copyright © 2020 Divigraph (Pty) Ltd. All Rights Reserved 10
Consider Battery Life
Batteries for VP series 2000 devices have a typical life of five years under the following conditions:
VP Series 2000 ISA100 sensors are configured as a I/O device (not router).
Ambient temperatures under 40°C (104°F).
Good quality radio frequency communications.
Measurement interval of 30 minutes or more.
Dynamic measurement intervals of 1 day or more.
To maximize VP Series 2000 device battery life:
Minimize the number of hops between devices and backbone routers or access points. Poor quality
radio frequency communications increase packet retransmission and reduce battery life.
Avoid environments with elevated temperatures. Temperatures above 40°C (104°F) cause the device
to consume more power and the battery to discharge more quickly. Elevated temperatures can
reduce battery life by up to 40%.
Avoid using VP Series 2000 ISA100 sensors as both I/O and routers. Using a sensor as a router can
reduce battery life to 18 to 24 months.
Minimize the number of devices routed through VP Series 2000 ISA100 repeaters or sensors with
routing enabled. Avoid connecting more than eight devices through a single VP Series 2000 ISA100
repeater, or more than five devices through a VP Series 2000 ISA100 sensor with routing enabled.
Since VP Series 2000 ISA100 sensors with routing enabled are continually in listen and transmit mode,
their battery life is less.
Use the longest reasonable measurement interval to monitor vibration and temperature. More
frequent vibration measurements consume more power. For example, changing the interval from 30
to 10 minutes reduces battery life by about 30%.
Choose Network Topology
The most common network topologies are mesh and star-mesh hybrid topologies. ISA100 networks may
also have a star topology while WirelessHART networks inherently form mesh topologies. Your existing
network infrastructure may determine the number of devices you can connect to backbone routers
(ISA100) or access points (WirelessHART) or the maximum number of hops permitted. A star topology is
recommended for ISA100 networks, although you may use a combination of both star and mesh
topologies (hybrid topology), depending on your needs. Consult your network infrastructure
documentation for details.
Star Topology
A star topology is the most efficient method for building an ISA100 network. It is suitable for smaller
areas where all devices can directly communicate with a backbone router or an access point.