Digi Connect Sensor Manuel utilisateur

Digi Connect® Sensor

I/O Wiring Guide

Revision history—90001493

Revision Date Description

A May 2016 Initial release.

B October 2016 nAdded C1D2 certification information.

nAdded wiring compliance information.

C March 2017 nAdded HART® protocol information.

nAdded Serial Power section for use with Modbus.

nUpdated 4/20 mA current loop section.

D April 2017 Added registered trademark symbol to HART®.

E March 2018 Updated the "About" section.

Trademarks and copyright

Digi, Digi International, and the Digi logo are trademarks or registered trademarks in the United

States and other countries worldwide. All other trademarks mentioned in this document are the

property of their respective owners.

Disclaimers

Information in this document is subject to change without notice and does not represent a

commitment on the part of Digi International. Digi provides this document “as is,” without warranty of

any kind, expressed or implied, including, but not limited to, the implied warranties of fitness or

merchantability for a particular purpose. Digi may make improvements and/or changes in this manual

or in the product(s) and/or the program(s) described in this manual at any time.

Warranty

To view product warranty information, go to the following website:

www.digi.com/howtobuy/terms

Send comments

Documentation feedback: To provide feedback on this document, send your comments to

techcomm@digi.com.

Customer support

Digi Technical Support: Digi offers multiple technical support plans and service packages to help our

customers get the most out of their Digi product. For information on Technical Support plans and

pricing, contact us at +1 952.912.3444 or visit us at www.digi.com/support.

Digi Connect® Sensor I/O Wiring Guide 2

Contents

Digi Connect® Sensor

About the Connect Sensor I/O interface

Connect Sensor hardware replacement 5

Digi Device Cloud and Digi Remote Manager 5

Safety notices and certifications 5

CSENSE Continuous Monitoring firmware 5

Use a Modbus-enabled device with CSENSE Continuous Monitoring firmware 6

I/O interface pin assignments

9-pin connector details 7

12-pin connector details 8

Wire sensors to the I/O interface

Power options

Power Connect Sensor 13

Power the sensors 13

Analog input

Voltage input 16

Self-powered 16

3-wire sensors 16

Current loop 16

Self-powered 17

2-wire (loop-powered)sensors 17

3-wire sensors 18

Digital I/O

Digital input and pulse counter 20

Digital output 21

Modbus serial power output

I/O schematics

Analog input schematic 24

Digital I/O schematic 25

Digi Connect® Sensor I/O Wiring Guide 3

Digi Connect® Sensor

Connect Sensor is a low-power cellular sensor gateway for wireless drop-in networking to remotely

monitor industrial environments and control systems, such as pipeline flow, air pressure, and light

levels. To power Connect Sensor, use either the internal battery or an external power source, such as

solar panels, for setups with no power or limited power.

Connect Sensor includes an external input/output (I/O) interface inside a waterproof enclosure for

connecting third-party sensors. The sensors gather information (sensor readings) from their

environment, and Connect Sensor reports that information to Digi Remote Manager® using a low-

bandwidth cellular connection. You can sign in to your Remote Manager account to view the reports or

use the Digi Connect Wizard app on a mobile device and pair it with a nearby Connect Sensor to view

real-time sensor and device data in the field.

Note Make sure there is adequate cellular network coverage where you plan to install the gateway

before purchasing cellular service.

This guide shows you how to wire analog or digital I/O sensors and power to Connect Sensor. See the

Digi Connect Sensor User Guide for details about setting up the Connect Sensor device, configuring

sensors and reports, and viewing sensor data.

Digi Connect® Sensor I/O Wiring Guide 4

About the Connect Sensor I/O interface

You can wire analog and digital inputs and outputs on the Connect Sensor general purpose I/O

interface.

Note If you are using a Modbus-enabled external sensor device, you must wire the sensor device to a

serial output. Note that the Modbus protocol is available only with Connect Sensor+.

Make sure Connect Sensor has cellular connectivity before wiring sensors to the I/O interface. After

setting up Connect Sensor and wiring the I/O interface, use Remote Manager to remotely configure

I/O settings.

Connect Sensor hardware replacement

Connect Sensor hardware can be replaced with Connect Sensor+ hardware, which provides additional

external device monitoring features, such as using the HART®protocol and the Modbus protocol.

Digi Device Cloud and Digi Remote Manager

To serve our customers most effectively, Digi International Inc. consolidated its cloud services, Digi

Device Cloud and Digi Remote Manager®, under the Remote Manager name. This phased process does

not affect device functionality or the functionality of the web services and other features. However,

you will find instances of both Device Cloud and Digi Remote Manager in some documentation,

firmware, and user interfaces.

Safety notices and certifications

Digi products are designed to the highest standards of safety and international standards compliance

for the markets in which they are sold. However, cellular-based products contain radio devices that

require specific consideration. Make sure you read and understand all of the safety notices, warnings,

and cautions for this product. Digi International assumes no liability for failure to comply with the

safety precautions.

See the Connect Sensor User Guide for details about safety and certification for Connect Sensor.

CSENSE Continuous Monitoring firmware

When you update Connect Sensor with the CSENSE Continuous Monitoring firmware option, Connect

Sensor supports only one power output (A1 Pwr), which is on all the time. Multiple sensors can share

this supply, but all sensors must have the same input voltage and must be wired to A1 Pwr.

Digi Connect® Sensor I/O Wiring Guide 5

About the Connect Sensor I/O interface CSENSE Continuous Monitoring firmware

Digi Connect® Sensor I/O Wiring Guide 6

Use a Modbus-enabled device with CSENSE Continuous Monitoring

firmware

If you have a Modbus-enabled device that must get power from Connect Sensor, the Modbus device

must be wired to the serial power output. However, if you have updated Connect Sensor with the

CSENSE Continuous Monitoring firmware option, the Modbus device must be wired to A1 Pwr (analog

interface 1 power output). The Modbus device must have the same input voltage as any other device

wired to A1 Pwr.

Note The Modbus protocol is available only with Connect Sensor+ hardware.

I/O interface pin assignments

Connect Sensor has two I/O connectors—a 9-pin connector and a 12-pin connector.

The pin assignments and signals are shown in the following images and tables.

9-pin connector details

Digi Connect® Sensor I/O Wiring Guide 7

I/O interface pin assignments 12-pin connector details

Digi Connect® Sensor I/O Wiring Guide 8

Pin number Assignment Signal

1 SGnd Serial interface ground

2 SRX/- Serial interface Modbus -

3 STX/+ Serial interface Modbus +

4 SPwr Serial interface power output

5 EXT GND IN External power supply, ground

6 EXT PWR IN External power supply, positive input

7 DGnd Digital interface, ground

8 DIO Digital interface I/O

9 DPwr Digital interface power output

12-pin connector details

Pin number Assignment Signal

1 A4 GND Analog interface 4, ground

2 A4 IN Analog interface 4, analog input

3 A4 Pwr Analog interface 4, power output

4 A3 GND Analog interface 3, ground

5 A3 IN Analog interface 3, analog input

6 A3 Pwr Analog interface 3, power output

I/O interface pin assignments 12-pin connector details

Digi Connect® Sensor I/O Wiring Guide 9

Pin number Assignment Signal

7 A2 GND Analog interface 2, ground

8 A2 IN Analog interface 2, analog input

9 A2 Pwr Analog interface 2, power output

10 A1 GND Analog interface 1, ground

11 A1 IN Analog interface 1, analog input

12 A1 Pwr Analog interface 1, power output

Wire sensors to the I/O interface

To wire third-party sensors to the Connect Sensor I/O interface, you need the following equipment:

nA slot-headed 0.4 x 2.5 x 80 mm screwdriver

nWire size 1.29-0.25 mm (16-30 AWG) for each pin connector

Note All external or field wiring must be in accordance with NFPA 70 Article 501.10(B).

To wire sensors to the I/Ointerface:

1. Open the Connect Sensor enclosure and disconnect all power sources.

CAUTION! You must disconnect power from Connect Sensor before wiring

sensors to the I/O interface.

Digi Connect® Sensor I/O Wiring Guide 10

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