Vaisala Indigo 202 User manual

M211966EN-A
User Guide
Indigo™202 Digital Transmitter
Indigo 202

PUBLISHED BY
Vaisala Oyj
Street address: Vanha Nurmijärventie 21, FI-01670 Vantaa, Finland
Mailing address: P.O. Box 26, FI-00421 Helsinki, Finland
Phone: [phone]
Fax: [phone]
Visit our Internet pages at www.vaisala.com.
© Vaisala Oyj 2017
No part of this manual may be reproduced,
published or publicly displayed in any form
or by any means, electronic or mechanical
(including photocopying), nor may its
contents be modified, translated, adapted,
sold or disclosed to a third party without
prior written permission of the copyright
holder. Translated manuals and translated
portions of multilingual documents are
based on the original English versions. In
ambiguous cases, the English versions are
applicable, not the translations.
The contents of this manual are subject to
change without prior notice.
Local rules and regulations may vary and
they shall take precedence over the
information contained in this manual.
Vaisala makes no representations on this
manual’s compliance with the local rules
and regulations applicable at any given
time, and hereby disclaims any and all
responsibilities related thereto.
This manual does not create any legally
binding obligations for Vaisala towards
customers or end users. All legally binding
obligations and agreements are included
exclusively in the applicable supply
contract or the General Conditions of Sale
and General Conditions of Service of
Vaisala.
This product contains software developed
by Vaisala or third parties. Use of the
software is governed by license terms and
conditions included in the applicable
supply contract or, in the absence of
separate license terms and conditions, by
the General License Conditions of Vaisala
Group.
This product may contain open source
software (OSS) components. In the event
this product contains OSS components,
then such OSS is governed by the terms
and conditions of the applicable OSS
licenses, and you are bound by the terms
and conditions of such licenses in
connection with your use and distribution
of the OSS in this product. Applicable OSS
licenses are included in the product itself
or provided to you on any other applicable
media, depending on each individual
product and the product items delivered
to you.

Table of Contents
1. About This Document........................................................................................ 5
1.1 Version Information............................................................................................... 5
1.2 Related Manuals..................................................................................................... 5
1.3 Documentation Conventions................................................................................ 5
1.4 Trademarks............................................................................................................. 6
2. Product Overview................................................................................................ 7
2.1 Introduction to Indigo™ Transmitters.................................................................. 7
2.2 Indigo 202 Basic Features and Options.............................................................. 8
2.3 Probe Compatibility...............................................................................................8
2.4 Indigo Transmitter Parts........................................................................................9
2.5 Indigo Display....................................................................................................... 10
2.5.1 Graph Display Mode........................................................................................11
2.6 Wireless Configuration Interface Overview.......................................................12
3. Installation.............................................................................................................13
3.1 Mounting................................................................................................................13
3.2 Indigo Transmitter Base.......................................................................................14
3.3 Wiring Options......................................................................................................15
3.4 Attaching Probes and Cables..............................................................................16
3.5 Input and Output Specification...........................................................................17
3.6 WLAN and RS-485 Termination OFF/ON DIP Switches.................................. 18
4. Wireless Configuration Interface................................................................. 21
4.1 Wireless Interface Menus.....................................................................................21
4.2 Connecting to Wireless Configuration Interface............................................. 22
4.2.1 Connecting with a Computer.......................................................................22
4.2.2 Connecting with a Mobile Device................................................................23
4.3 Logging in to Wireless Configuration Interface...............................................24
4.3.1 Changing User Level..................................................................................... 25
4.3.2 Changing Administrator Password............................................................. 25
4.3.3 Resetting Administrator Password............................................................. 26
4.4 Measurements View.............................................................................................27
4.5 Status View...........................................................................................................28
4.5.1 Status View: General.....................................................................................28
4.5.2 Status View: Relays....................................................................................... 29
4.6 Calibration Menu................................................................................................. 30
4.7 General Settings.................................................................................................. 30
4.7.1 WLAN Settings............................................................................................... 31
4.7.2 User Access Settings (Administrator Password)........................................31
4.7.3 Display Settings.............................................................................................32
4.7.4 Factory Reset.................................................................................................33
4.7.5 License Information...................................................................................... 33
4.8 Modbus Serial Communication Settings.......................................................... 34
4.9 Relay Settings...................................................................................................... 35
4.10 Probe Settings..................................................................................................... 36
5. Modbus.................................................................................................................. 39
5.1 Modbus Overview................................................................................................39
5.1.1 Default Communication Settings............................................................... 40
Table of Contents
1

6. Configuring Relays.............................................................................................41
6.1 Relay Configuration Overview............................................................................ 41
6.2 Setting Relay Activation Limit Without Hysteresis......................................... 42
6.3 Setting Relay Activation Limit Using Hysteresis..............................................43
6.4 Selecting Relay Error State................................................................................ 44
7. Calibration and Adjustment..........................................................................45
7.1 Calibration Overview...........................................................................................45
7.1.1 Starting and Closing Calibration Mode...................................................... 46
7.1.2 Restoring Factory Adjustment.................................................................... 47
7.1.3 Calibration PIN Code.....................................................................................47
7.2 Environmental Compensation........................................................................... 48
7.3 Measurements Tab.............................................................................................. 50
7.4 Diagnostics Tab................................................................................................... 50
7.5 Configuration Tab................................................................................................. 51
7.6 GMP252 Example: 2-point CO2Adjustment.....................................................52
8. Maintenance and Troubleshooting.............................................................55
8.1 Cleaning................................................................................................................ 55
8.2 Indigo Wireless Connection Troubleshooting..................................................55
8.3 Connecting to Indigo WLAN with iPhone........................................................ 56
8.3.1 Connection Option 1: Use Without Internet............................................... 57
8.3.2 Connection Option 2: Disable iPhone Auto-Login....................................58
8.4 Display Messages.................................................................................................58
9. Technical Data......................................................................................................61
9.1 Specifications........................................................................................................61
9.2 Spare Parts and Accessories.............................................................................. 63
9.3 Dimensions (in mm)............................................................................................64
Appendix A: Modbus Reference.........................................................................65
A.1 Function Codes....................................................................................................65
A.1.1 Device Identification Objects...................................................................... 65
A.2 Indigo Status Registers.......................................................................................65
A.2.1 Notification and Error Bits........................................................................... 66
EU Declaration of Conformity.............................................................................. 69
Warranty........................................................................................................................70
Technical Support.......................................................................................................71
Recycling........................................................................................................................ 71
Indigo 202 User Guide M211966EN-A
2

List of Figures
Figure 1 Probe Connection Options and Wireless Interface
Examples (GMP251 Example)...........................................................................7
Figure 2 Serial Number on Probe Body (GMP251 Example)....................................8
Figure 3 Indigo Transmitter Parts....................................................................................9
Figure 4 Indigo Display with One Parameter ............................................................ 10
Figure 5 Indigo Display with Relays, Three Parameters and WLAN
Notification..........................................................................................................10
Figure 6 Indigo Display in Graph Mode.........................................................................11
Figure 7 Desktop and Mobile Example Views............................................................ 12
Figure 8 Indigo 202 Transmitter Base Main Parts and Screw Positions..............14
Figure 9 Indigo Wiring Options...................................................................................... 15
Figure 10 Attaching Probes and Cables to Indigo.......................................................16
Figure 11 WLAN and RS-485 DIP Switches on Indigo 202 Circuit Board............ 18
Figure 12 Wireless Configuration Interface, Desktop Browser View......................21
Figure 13 Enabling and Accessing Indigo's Wireless Configuration Interface... 22
Figure 14 Indigo Login View.............................................................................................24
Figure 15 User Level (User/Admin) in Upper Right Corner of Menu View...........25
Figure 16 Measurements View (Desktop Browser)....................................................27
Figure 17 Status View (CO2Probe Example, Desktop Browser)............................ 28
Figure 18 Calibration Menu (CO2Probe Example, Desktop Browser)..................30
Figure 19 Relay Configuration Options (CO2Probe Example)................................ 41
Figure 20 Relay Icons on the Optional Display (Relay A Active, Relay
B Not Active)......................................................................................................42
Figure 21 Calibration Menu Main View.......................................................................... 45
Figure 22 Start Calibration Button..................................................................................46
Figure 23 Measurement Selections, CO2Probe Example.........................................48
Figure 24 Compensation Setpoint and Power-Up Default Selection,
CO2Probe Example......................................................................................... 49
Figure 25 Measurements Tab, CO2Probe Example....................................................50
Figure 26 Diagnostics Tab, CO2Probe Example...........................................................51
Figure 27 Configuration Tab, CO2Probe Example......................................................52
Figure 28 Additional Steps Needed to Connect Notification..................................56
Figure 29 Indigo Transmitter Dimensions in Millimeters (mm).............................. 64
List of Figures
3

List of Tables
Table 1 Document Versions................................................................................................5
Table 2 Input and Output.................................................................................................. 17
Table 3 Indigo 202 Modbus Registers...........................................................................39
Table 4 Default Modbus Serial Communication Settings........................................40
Table 5 Indigo Transmitter Messages Shown on Display.........................................59
Table 6 Input and Output.................................................................................................. 61
Table 7 General.....................................................................................................................61
Table 8 Standards and Compliance...............................................................................62
Table 9 Wireless Access Point (Module With Internal Chip Antenna).................62
Table 10 Operating and Storage Environment............................................................. 62
Table 11 Mechanics.............................................................................................................. 63
Table 12 Spare Parts and Accessories.............................................................................63
Table 13 Supported Function Codes...............................................................................65
Table 14 Device Identification Objects........................................................................... 65
Table 15 Modbus Status Registers (Read-Only)..........................................................66
Table 16 Bits in Register E001hex......................................................................................66
Indigo 202 User Guide M211966EN-A
4

1. About This Document
1.1 Version Information
This document provides detailed instructions for using and maintaining Vaisala Indigo™202
digital transmitter.
Table 1 Document Versions
Document Code Date Description
M211966EN-A May 2017 First version of the document.
1.2 Related Manuals
Document Code Name
M211967EN Indigo 202 Digital Transmitter Quick Guide
M211877EN Indigo 201 Analog Output Transmitter User Guide
M211876EN Indigo 201 Analog Output Transmitter Quick Guide
M211799EN Vaisala CARBOCAPâCarbon Dioxide Probe GMP251 User Guide
M211897EN Vaisala CARBOCAPâCarbon Dioxide Probe GMP252 User Guide
1.3 Documentation Conventions
alerts you to a serious hazard. If you do not read and follow instructions
carefully at this point, there is a risk of injury or even death.
WARNING!
warns you of a potential hazard. If you do not read and follow instructions
carefully at this point, the product could be damaged or important data could be lost.
CAUTION!
Note highlights important information on using the product.
Chapter 1 – About This Document
5

Tip gives information for using the product more eciently.
1.4 Trademarks
Vaisalaâis a registered trademark of Vaisala Oyj.
Indigo™is a trademark of Vaisala Oyj.
Chrome™is a trademark of Google Inc.
Firefoxâis a registered trademark of Mozilla Foundation.
Microsoftâ, Windowsâ, Internet Explorerâ, and Edge™are either registered trademarks or
trademarks of Microsoft Corporation in the United States and/or other countries.
Safari™is a trademark of Apple Inc, registered in the U.S. and other countries.
All other product or company names that may be mentioned in this publication are trade
names, trademarks, or registered trademarks of their respective owners.
Indigo 202 User Guide M211966EN-A
6

2. Product Overview
2.1 Introduction to Indigo™ Transmitters
1.35
% | Carbon dioxide
WLAN is activated


Indigo 201
Figure 1 Probe Connection Options and Wireless Interface Examples (GMP251 Example)
Vaisala Indigo transmitters are a plug-and-play host device platform for Vaisala Indigo-
compatible probes. Indigo transmitters extend the feature set of connected probes with a
range of additional options for outputs, measurement viewing, status monitoring, and
configuration interface access.
Depending on the Indigo transmitter model, a display is available as an optional selection or
as a standard feature. In the non-display model, an LED indicator is used for notifications.
Probes can be connected either directly on the transmitter from the probe's connector, or by
using a cable between Indigo and the probe.
The configuration interface of Indigo transmitters is a browser-based wireless UI that
requires a mobile device or computer that supports wireless connectivity (IEEE 802.11 b/g/n
WLAN).
The Indigo 202 transmitter is designed for digital output applications. The transmitter's
output options include RS-485 Modbus RTU and 2 programmable relays.
For more information on Indigo transmitter models, see www.vaisala.com/indigo.
More Information
‣Indigo 202 Basic Features and Options (page 8)
‣Specifications (page 61)
Chapter 2 – Product Overview
7

2.2 Indigo 202 Basic Features and
Options
• All Vaisala Indigo-compatible probes can be connected to all Indigo transmitter models
•Wireless configuration interface: connect to the scalable browser-based UI of Indigo
202 to change probe and transmitter settings, view measurements, and review probe
and transmitter status
• 3.5” TFT LCD color display
• Power supply input 15 ... 30 VDC (20 ... 22 VAC)
• Digital output: RS-485 Modbus RTU
• 2 configurable relays
•1 m, 3 m, 5 m and 10 m probe connection cables available as accessories
2.3 Probe Compatibility
All Indigo-compatible probes can be used with all Indigo transmitter models. To verify that
your probe is compatible with Indigo, check the serial number on the probe body. All probes
intended for use with Indigo manufactured from 2017 onwards (serial numbers starting with
the letter Nor latter in alphabetical order) have full compatibility.
c Rr
Made in Finland, Vaisala Oyj
Vanha Nurmijärventie 21, FI-01670 Vantaa
CO2 PROBE GMP251 A2B0A1N1
Output: 0... 20% CO2 RS485 Vaisala protocol
Input: 12 – 30 V d
Serial No. N0310004
1
Figure 2 Serial Number on Probe Body (GMP251 Example)
1Probes with a serial number starting with the letter Nhave been manufactured in 2017.
Indigo 202 User Guide M211966EN-A
8

2.4 Indigo Transmitter Parts
2
3
4
6
5
1
Figure 3 Indigo Transmitter Parts
1Display
2Probe and probe cable connector, locking wheel
3Wireless (WLAN) configuration interface activation button
4Rubber lead-through with strain relief for input/output cable
5Top cover of the transmitter: display, circuit board and connector pins
6Transmitter base: input and output wiring (screw terminals), mounting base
Only use Vaisala Indigo-compatible probes with the transmitter. Attempting
to connect incompatible probes or probe cables can damage the equipment.
CAUTION!
More Information
‣Dimensions (in mm) (page 64)
‣Indigo Transmitter Base (page 14)
‣Spare Parts and Accessories (page 63)
Chapter 2 – Product Overview
9

2.5 Indigo Display
Indigo transmitters use a 3.5” TFT LCD color display for displaying notifications, status
information, and measurement data.
hPa | Pressure
Figure 4 Indigo Display with One Parameter
12
3
Figure 5 Indigo Display with Relays, Three Parameters and WLAN Notification
1Relay A and relay B status
2Wireless configuration interface indicator (SSID text and WLAN symbol)
3Message field for notifications, warnings and errors
Indigo 202 User Guide M211966EN-A
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The Indigo display can be configured to show 1-3 measurement parameters. Information
about the transmitter and connected probe (for example, notifications and warnings) is
shown on a message row at the bottom of the display. Relay and wireless access point
activity is also shown on the display.
The parameters shown on the display, display brightness and display mode (numeric or
graph) can be configured with the wireless configuration interface in the Settings > General
menu.
2.5.1 Graph Display Mode
Figure 6 Indigo Display in Graph Mode
You can set the Indigo display to show the connected probe's measurement data as a graph.
The display mode can be changed in the wireless configuration interface's Settings >
General menu.
More Information
‣Display Settings (page 32)
Chapter 2 – Product Overview
11

2.6 Wireless Configuration Interface
Overview
Indigo transmitters are configured using a wireless browser-based configuration interface
(requires a mobile device or computer with IEE 802.11 b/g/n WLAN wireless connectivity). In
addition to probe and transmitter configuration and calibration, you can also use the
wireless interface to view measurement data and status information.
Figure 7 Desktop and Mobile Example Views
The wireless configuration interface has two user levels. All users have view-only access (no
configuration rights, not password protected), and personnel that carry out configuration
tasks can log in with an administrative password that allows changing the transmitter and
probe settings.
To use the wireless configuration interface to modify the settings of your Indigo transmitter
and the connected probe, you must first enable the transmitter's wireless connection and
then connect to Indigo with your mobile device or computer. Most major browsers (for
example, Firefox, Chrome, Safari and Internet Explorer) are supported: using the most recent
version is recommended.
More Information
‣Connecting to Wireless Configuration Interface (page 22)
‣Logging in to Wireless Configuration Interface (page 24)
‣Wireless Interface Menus (page 21)
‣Indigo Wireless Connection Troubleshooting (page 55)
Indigo 202 User Guide M211966EN-A
12

3. Installation
3.1 Mounting
1. Open the 4 screws on the transmitter cover and pull the cover o the base.
To avoid damaging the connector pins of the transmitter, pull the
transmitter cover o the base in a straight angle. Do not twist or bend.
CAUTION!
2. Place the transmitter base on the installation surface and mount it with 3 screws. See
the screw positions in Figure 1.
3. Lead the input/output cable inside the transmitter (see Wiring Options). If you are
wiring through the lead-through on the bottom of the transmitter, test that the strain
relief works with your cable.
4. Connect the input/output cable's wiring to the screw terminals (see Indigo Transmitter
Base) and reattach the cover when done.
5. When you have finished wiring and reattached the cover, switch on the power supply
input.
Chapter 3 – Installation
13

3.2 Indigo Transmitter Base
1 2 4
5
6
3
INDIGO 202
DIGITAL TRANSMITTER
Serial No. SX12345678
24Vd
IN
RS485
A. Relay
B. Relay
Figure 8 Indigo 202 Transmitter Base Main Parts and Screw Positions
1Probe and probe cable connector inside the locking wheel
2Wireless (WLAN) configuration interface activation button
3Wiring from the back: cut open the seal
4Rubber cable lead-through with strain relief
5Screw terminals for relays A and B
6Screw terminals for 24 V power supply input and RS-485 (Modbus) connection
Do not energize the power supply before the wiring has been connected.CAUTION!
Indigo 202 User Guide M211966EN-A
14

3.3 Wiring Options
You can wire an input/output cable either through the opening on the back of the
transmitter, or through the rubber lead-through on the bottom of the transmitter.
1
2
7 ... 8 mm
Ø
Figure 9 Indigo Wiring Options
1Wiring from the back: cut the seal open
2Wiring through the rubber lead-through on the bottom of the transmitter
1. To wire the input/output cable through the back of the transmitter:
a. Cut o as much of the seal as is needed to fit your cable through the opening.
b. Lead the cable through the opening and attach a strain relief as needed.
c. If you wire only through the back, plug or seal the lead-through on the bottom.
2. To wire the input/output cable through the rubber lead-through on the bottom:
a. Push the input/output cable through the lead-through.
b. The lead-through provides strain relief and holds the cable in place. Tightening is not
required.
The recommended cable diameter for wiring through the rubber lead-through is
7 ... 8 mm. If you use a dierent cable size, test that the strain relief works as
intended.
Chapter 3 – Installation
15

3.4 Attaching Probes and Cables
1
2
3
Figure 10 Attaching Probes and Cables to Indigo
1Insert probes into the probe connector with the orientation mark facing out.
2Probes are locked in place with the locking wheel. Never turn from the probe body.
3Connect probe cables in the same way as probes: insert the cable in the connector and
hold in place while turning the locking wheel.
1. Insert the probe into the probe connector with the orientation mark on the probe body
facing out.
2. Hold the probe in the probe connector and lock it in place by turning the locking wheel
counterclockwise. Do not turn the probe body when attaching, only the locking wheel
on the transmitter.
3. When the transmitter recognizes the connected probe, it shows a notification message
on the display (for example, Probe Connected: GMP251).
Indigo 202 User Guide M211966EN-A
16

3.5 Input and Output Specification
Table 2 Input and Output
Property Specification
Digital output RS-485 Modbus RTU
Relays 2 configurable relays (VAC/VDC)
Device maximum specification (resistive load):
•Max. switching power 30 W / 37.5 VA
UL-rated maximum specification (resistive load):
• AC: max. 28 V / 0.5 A
• DC: max. 40 V / 0.24 A
• Up to 30 VDC:
• max. switching current 1 A
• max. switching power 30 W
Power supply input 1) Range 15 ... 30 VDC (20 ... 22 VAC)
Maximum current Transmitter and connected probe max. 1 A
Power consumption Transmitter max. 3 W (+ connected probe, varies
depending on probe type)
Probe connector M12/5 connector for probe or probe cable connection
(Vaisala Indigo-compatible probes)
Cable feed throughs 2 options: rubber lead-through on the bottom of the
transmitter, and opening with a seal at the back of the
transmitter
Screw terminal wire size 0.2 mm2... 1.5 mm2
1) Using a power supply with overload protection is recommended for electrical safety.
Do not modify the unit or use it in ways not described in the documentation.
Improper modification may lead to safety hazards, equipment damage, failure to
perform according to specification, or decreased equipment lifetime.
CAUTION!
More Information
‣Specifications (page 61)
Chapter 3 – Installation
17

3.6 WLAN and RS-485 Termination
OFF/ON DIP Switches
If your application requires switching WLAN communication or RS-485 termination o or
on, use the DIP switches on the Indigo circuit board.
WLAN
OFF ON
RS485
TERMINATION
OFF ON
1
2
Figure 11 WLAN and RS-485 DIP Switches on Indigo 202 Circuit Board
1WLAN functionality OFF or ON
2RS-485 termination OFF or ON
To switch WLAN or RS-485 termination OFF or ON with DIP switches:
1. Power o the transmitter.
Indigo 202 User Guide M211966EN-A
18