Lonpoint hardware guide 8-5 – Echelon LonPoint Module User Manual

Page 89

LonPoint Hardware Guide

8-5

Input 1
Voltage Sensing

Input #1

4WIR

RES

2WIR

VOLT

This setting is used for connecting an intelligent
transmitter that generates a 0-5V, 0-10V, or 0-20V
output. See text below for a discussion of the
range and software settings for the VOLT mode.
This setting also can be used to measure passive
thermocouplers. The input resistance of the
analog input is 7.246K Ohms

± 0.3%.

Input 2
Voltage Sensing

4WIR

RES

2WIR

VOLT

This setting is used for connecting an intelligent
transmitter that generates a 0-5V, 0-10V, or 0-20V
output. See text below for a discussion of the
range and software settings for the VOLT mode.
This setting also can be used to measure passive
thermocouplers. In this mode 3.5V is provided on
the (+) terminal and programmable current sink
(25mA or 400mA on the (-) terminal).

The AI-10 module is installed in a Type 1 Base Plate. Wiring connections to the AI-10 module are

presented in table 8.2. Specifications for the AI-10 module are shown in table 8.3.

Table 8.2 AI-10 Analog Input Module Wiring Connections

Screw Terminal

Wiring Connection

1 and 2

Incoming network wiring, TP/FT-10 channel, polarity-insensitive

3 and 4

Outgoing network wiring, TP/FT-10 channel, polarity-insensitive

Unused

6 and 7

Incoming power wiring, 16-30VAC or VDC, 2.1VA for all mdoes
except 2-wire mode (4.5VA) maximum, polarity-insensitive. If
using DC power, it is good practice to maintain continuity of the
power polarity throughout the network. Terminals 6 and 8 should
be the same polarity, and terminals 7 and 9 should be the same
polarity.

+ input of analog input 1

- input of analog input 1

+ input of analog input 2

- input of analog input 2

Unused

Table 8.3 LonPoint AI-10 Analog Input Module Specifications

Function

Description

Processor/memory

Neuron 3150 Chip, 10MHz, 56K flash memory

Service function

Recessed service switch, service LED, power/wink LED. Dual
tear-off bar-code Neuron ID self-adhesive tag for application to
red-line drawings in the field

I/O

2 independent 16-bit resolution analog inputs