Echelon LonPoint Module - Manual (Page 12)

2-2 LonPoint Modules and Base Plates
LonPoint Interface Modules
The LonPoint Interface Modules are designed to monitor and control a wide variety of
analog and digital sensors and actuators, and are the primary means of interfacing a
LonPoint system to devices that lack an integral L ON W ORKS interface, i.e., a Neuron
Chip and transceiver. By selecting the correct LonPoint Interface Module and
configuring both its hardware and software correctly, a wide and varied assortment of
sensors and actuators can be supported.
There are five types of LonPoint Interface Modules which share a common form factor
but differ in terms of their I/O and internal software functions. The five modules
include the DI-10 Digital Input Module, DO-10 Digital Output Module, DIO-10 Digital
Input Output Module, AI-10 Analog Input Module, and AO-10 Analog Output Module.
The DI-10 Digital Input Module provides four digital inputs for supervising voltage
ranges 0-5VDC through 0-32VDC or dry contacts. Inputs are isolated from the input
power and the network but not from each other. Separate status LEDs are provided for
each input.
The DO-10 Digital Output Module includes four digital outputs rated at 0-12V, 100mA
source/sink per output, 110mA source, 400mA sink all outputs combined. Outputs are
isolated from the input power and the network but not from each other. Each output
may be separately overridden by a hand/off/auto switch accessible from the front panel.
Separate status LEDs are provided for each output.
The DIO-10 Digital Input Output Module provides two digital inputs and two relay
outputs. The digital inputs include configurable input thresholds for supervising dry
contacts or 5V, 12V, 24V, or 31V DC inputs. In addition, the digital inputs can be set to
measure frequency ( 20kHz) inputs. The inputs are isolated from the input power and
the network, but are not isolated from each other. Each relay output consists of a Form
A (normally open) and Form B (normally closed) contact which share a common wiper.
The relay contacts are rated for 2A continuous, 6A momentary, at 30VAC or 42VDC.
Each output may be separately controlled by a hand/off/auto switch accessible from the
front panel. Separate status LEDs are provided for each input and output.
The AI-10 Analog Input Module provides two independent 16-bit resolution analog
inputs which are isolated from the input power and the network but not from each
other. Each input can be configured via jumper blocks to monitor RTDs, thermistors,
and other types of analog inputs. Inputs can be separately configured as a voltage input,
resistive transducer input, loop-powered 0-24mA current input, or remote-powered 0-
24mA current input. Voltage input ranges can be selected via the LonPoint Plug-in to
be 0-156mV, 0-625mV, 0-10V, or 0-20V. Current input ranges can be set via the
LonPoint Plug-in to be 0-25mA, 0-12.5mA, 0-781µA, or 0-19.5µA. Resolution in the 0-
20V range is 0.3mV per step; current input resolution in the 0 - 25mA range is 0.37µA
per step. For resistive transducers, the module includes a configurable current source
which can be set, under software control, to provide either 25µA or 400µA current for
resistance measurement of transducers from 100 to 15k (nominal).
The AO-10 Analog Output Module offers two independent 12-bit resolution analog
outputs. Each output can be separately configured for voltage or current output, and
can drive 0-10V into a 1k load or 0-20mA or 4-20mA @ 0-12V. Outputs are isolated
from the input power and the network but not from each other.