APG MDI User manual

APG
R
Doc #9005617
Part #200333
Rev A, 12/2019
MDI
User Manual
Intrinsically Safe
Modbus Network Display and Controller

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Table of Contents
Introduction ................................................................................................................ iii
Warranty and Warranty Restrictions.................................................................... iv
Chapter 1: Specications and Options..................................................................... 1
Dimensions ........................................................................................................................................1
Specications ................................................................................................................................... 2
Model Number Congurator.......................................................................................................... 3
Wiring Diagram For Slave Sensor Connection.......................................................................... 4
Wiring Diagram For Passive Control Connection..................................................................... 4
Wiring Diagram For RST-6001 Programming ............................................................................ 4
IS Use Case Diagrams ..................................................................................................................... 5
Chapter 2: Installation and Removal Procedures and Notes..............................6
Tools Needed..................................................................................................................................... 6
Physical Installation Notes ........................................................................................................... 6
Mounting Instructions ................................................................................................................... 6
Electrical Installation ..................................................................................................................... 7
Removal Instructions ..................................................................................................................... 7
Chapter 3: User Interface and Access Modes ........................................................8
User Interface ................................................................................................................................... 8
MDI Setup Menus ............................................................................................................................ 9
Accessing Mode Options.............................................................................................................. 10
Chapter 4: Modbus Programming Notes .............................................................. 11
Modbus Programming ...................................................................................................................11
Modbus Programming via Internet ............................................................................................11
Modbus Programming with RST-6001 and APG Modbus Software .....................................11
Chapter 5: Maintenance ........................................................................................... 12
General Care.................................................................................................................................... 12
Replacing Lithium Batteries........................................................................................................ 12
Troubleshooting............................................................................................................................. 13
Resetting MDI to Factory Standard Defaults........................................................................... 13
Repair and Returns........................................................................................................................ 13
Chapter 6: Programming and Parameter Conguration ................................... 14
MDI Programming Generalizations ........................................................................................... 14
UNITS (Volume Units Label) ....................................................................................................... 14
ENTR (Enter Button Function).................................................................................................... 14
AdVEST (Advanced Settings)................................................................................................. 15-16
OUTPUT (Output Congurations).........................................................................................17-21

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Introduction
Thank you for purchasing an MDI Intrinsically Safe Modbus Network Display and Controller from APG. We
appreciate your business! Please take a few minutes to familiarize yourself with your MDI and this manual.
The MDI Intrinsically Safe Modbus Network Display and Controller provides a local display in a Class I, Zone
1 area that can monitor and control a sensor within a Class I, Zone 0 or Class I , Zone 1 hazardous area. The
MDI can supply power to the sensor it controls, creating a complete monitoring-and-control system within
the hazardous area. The MDI can also be connected to monitoring equipment outside the hazardous area
through an IS barrier, allowing readings from the sensor to be seen across a montioring or control network.
The MDI features a large 5-digit display, IP66-rated housing options, and user selectable units of measure.
Reading your label
Every APG instrument comes with a label that includes the instrument’s model number, part number, serial
number, and a wiring/pinout table. Please ensure that the part number and pinout table on your label
match your order. The following electrical ratings and approvals are also listed on the label. Please refer to
the Certicate of Compliance at the back of this manual for further details.
Table of Contents
COMM (Communications) ..................................................................................................... 22-25
SENLAB (Sensor Labels)...............................................................................................................26
PCTFUL (Percent Full).................................................................................................................. 27
bLIGHT (Backlight)........................................................................................................................28
Chapter 7: Hazardous Drawing & Certicate........................................................29
Hazardous Installation Drawing.................................................................................................29
CSA Certicate of Compliance.............................................................................................. 30-32
IECEx Certicate of Conformity ........................................................................................... 33-36
EU Declaration of Conformity ..................................................................................................... 37
Appendices..................................................................................................................38
Appendix A: MDI Factory Default Settings .............................................................................. 38
Appendix B: MNU IS Modbus Registers ................................................................................... 39
Appendix C: MPI Modbus Registers ..........................................................................................40
Appendix D: MDI Modbus Registers.................................................................................... 41-42
IMPORTANT: Your MDI MUST be installed according to drawing 9005447 (Intrinsi-
cally Safe Installation Drawing For Hazardous Locations) to meet listed approvals. Faulty
installation will invalidate all safety approvals and ratings.

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Warranty and Warranty Restrictions
This product is covered by APG’s warranty to be free from defects in material and workmanship under
normal use and service of the product for 24 months. For a full explanation of our Warranty, please visit
https://www.apgsensors.com/about-us/terms-conditions. Contact Technical Support to receive a Return
Material Authorization before shipping your product back.
Scan the QR code below to read the full explanation of our Warranty on your tablet or smartphone.
Electrical ratings
Rated for Modbus Outputs and Battery Power only
Class I Zone 1
AEx ib [ia Ga] IIB 142°C (T3) Gb
Ex ib [ia Ga] IIB 142°C (T3) Gb, Ta: -30°C to 85°C
Intrinsically Safe Wiring Requirements:
Vmax Ui= 12VDC, Imax Ii = 30mA, Pmax Pi= 100mW, Ci = 0.33μF, Li= 0mH
Uo= 12VDC, Io = 136mA, Po= 809mW, Co = 0.65μF, Lo= 7.7mH
Install in accordance with drawing 9005447
ATEX Certicate Number: Sira 18ATEX2289X
II 2G
Ex ib [ia Ga] IIB 142°C (T3) Gb
Ta = -30°C to 85°C
IP66
IECEx SIR 18.0076X
Ex ib [ia Ga] IIB 142°C (T3) Gb
Ta = -30°C to 85°C
IP66
US
C
237484
DANGER: WARNING -- EXPLOSION HAZARD -- DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS
BEEN SWITCHED OFF OR THE AREA IS KNOWN TO BE NON-HAZARDOUS;
AVERTISSEMENT -- RISQUE D’EXPLOSION -- AVANT DE DECONNECTER L’EQUIPEMENT, COUPER LE COURANT
OU S’ASSURER QUE L’EMPLACEMENT EST DESIGNE NON DANGEREUX.
DANGER: OPEN CIRCUIT BEFORE REMOVING COVER or KEEP COVER TIGHT WHILE CIRCUIT IS ALIVE;
AVERTISSEMENT -- COUPER LE COURANT AVANT D’ENLEVER LE COUVERCLE, OU GARDER LE COUVERCLE
FERME TANT QUE LE CIRCUIT EST SOUS TENSION.

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Chapter 1: Specications and Options
• Dimensions
Position 1
Position 2
3” Aluminum Housing
Position 1
Position 2
4” Aluminum Housing
7 mm hole
7 mm hole
4.25”
108 mm
4.09”
104 mm
4.92”
125 mm
4.15”
105.5 mm
4.53”
115 mm
5.71”
145 mm
4.96”
126 mm
Grounding Screw
Grounding Screw
External
Decrease/Power
Button
External
Decrease/Power
Button
4.94”
125.5 mm

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Performance
Digital Communication RS-485 (Modbus RTU)
RS-485 Baud Rate 2400, 9600, 19200, 38400
Environmental
Operating Temperature -30 to 85°C (-22 to 185°F)
Storage Temperature -45 to 90°C (-49 to 194°F)
Enclosure Protection IP66 - 3” Ø or 4” Ø Aluminum Housing
Electrical
Battery Voltage (3) AA 3.6V Lithium
Masterials of Construction
Aluminum Housing Pressure die casting, 0.5% Mg
Chemically resistant paint
Mounting
Standard No mounting hardware provided
Compatible Intrinsically Safe APG Modbus Senors
Ultrasonic MNU IS
Magnetostrictive MPI-E, MPI-R, MPI-E Chemical, MPI-F, MPI-T
• Specications
IMPORTANT:USE ONLY THREE (3) SAFT MODEL LS14500 OR THREE (3) XENO MODEL XL-060F BAT-
TERIES. FAILURE TO USE ONLY APPROVED BATTERIES WILL VOID INTRINSIC SAFETY RATING;
IMPORTANT -- UTILISEZ SEULEMENT TROIS (3) BATTERIES SAFT MODÈLE LS14500 OU TROIS (3) BATTERIES
XENO MODÈLE XL-060F. LA NON UTILISATION DE PILES APPROUVÉES ANNULERA LA CERTIFICATION DE
SÉCURITÉ INTRINSEQUE.
DANGER: DO NOT REPLACE BATTERIES WHEN EXPLOSIVE ATMOSPHERE IS PRESENT;
AVERTISSEMENT -- NE PAS REMPLACER LES PILES EN PRESENCE D’UNE ATMOSPHÈRE EXPLOSIVE.

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• Model Number Congurator
Model Number: MDI - __9__ __4__ __0__ _____ __0__ - _____ _____ - _____ _____ - _____ - __B0__
A B C D E F G H I J K
A. Power
□9▲Batteries (3) AA 3.6V Lithium Parallel
B. Output
□4▲Modbus RTU, IS Rated
C. Relays
□0▲No Relays
D. Enclosure
□2▲3” Aluminum (1/2” NPT cable entry)
□34” Aluminum (3/4” NPT cable entry)
E. Mounting/Cover
□0▲Standard Mounting
F. Main Connection Location†
□1▲Position 1
□2Position 2
G. Main Cable or Connector
□C_ Cable, in feet, with ying leads
(ex. C100 = 100 feet, 5 ft increments only)
□M_ Cable, in feet, with connector
(ex. M5C5 = 4 pin M12 Female connector with
5 feet of cable, avail. in 5 ft increments only)
□__ Connector only
(select from Connector Table below)
Connector Table
□24 pin M12 Male
□54 pin M12 Female
H. Auxiliary Connection Location†
□0▲No Auxiliary Connection
□1Position 1
□2Position 2
I. Auxiliary Cable or Connector
□0▲No Auxiliary Connection
□C_ Cable, in feet, with ying leads
(ex. C100 = 100 feet, 5 ft increments only)
□M_ Cable, in feet, with connector
(ex. M5C5 = 4 pin M12 Female connector with
5 feet of cable, avail. in 5 ft increments only)
□__ Connector only
(select from Connector Table below)
Connector Table
□24 pin M12 Male
□54 pin M12 Female
J. Backlight
□0▲No Backlight
□1Backlight (decreases battery life)
K. Factory Use Only
□B0▲
▲This option is standard.
†Note: Auxiliary Connection Location (when used) cannot
be the same as the Main Connection Location.

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• Wiring Diagram For Slave Sensor Connection
Red
White
Black
Green
DC Gnd
Slave Pwr
MDI - Slave Sensor Connection
Sensor
Slave
+VDC
TX B
TX A
1 BRN
2 WHT
3 BLU
4 BLK
M12
4 Pin 4/C
DC Gnd
TX B
TX A
• Wiring Diagram For RST-6001 Programming
Use Shielded Cable
USB to computer
with APG Modbus
software
RST-6001
Modbus
Controller
Slave Out
A+
DC GND
4-Pin / Cable
B-
A
B
-5V
MDI
+5V
Note: MDI must be removed from Hazardous
Location prior to connection to RST-6001,
and disconnected from RST-6001 prior to
installation in Hazardous Location.
• Wiring Diagram For Passive Control Connection
Red
White
Black
Green
SW-
SW+
MDI - Passive Control Connection
ControllerBarrier
IS
SW+
TX B
TX A
1 BRN
2 WHT
3 BLU
4 BLK
M12
4 Pin 4/C
Normally Open
Momentary Switch
For Remote Waking
of MDI.
TX B
TX A
Connection
Auxilliary
SW-

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MDI controlling single IS sensor
Single MDI controlling a single IS sensor
• MDI is located in Zone 1 area. Sensor can be in Zone 0 or Zone 1 without additional barriers.
• MDI is battery powered; allows for software-based switchable power for sensor.
• No external controller.
• Any changes to sensor settings done via MDI buttons.
MDI
Modbus Address: Master
Controling: Sensor 1
Single IS Sensor
Modbus Address: 1
Hazardous Area
Zone 1
Zone 0 or Zone 1
• IS Use Case Diagrams
MDI
Modbus Address: Master
Controling: Sensor 1
Single IS Sensor
Modbus Address: 1
Hazardous AreaNon-hazardous Area
Approved
IS Barrier
Passive Control Equipment
Modbus: Sniffer
Sniffing: MDI
Zone 1
Zone 0 or Zone 1
MDI controlling single IS sensor with Passive Control Equipment
Single MDI controlling a single IS sensor with Passive Control Equipment
• MDI is located in Zone 1 area. Sensor can be in Zone 0 or Zone 1 without additional barriers.
• MDI is battery powered; allows for software-based switchable power for sensor.
• External controller passively reads (Snis) readings from MDI.
• External controller can activate MDI.
• Approved IS Barrier required between Passive Control Equipment and MDI.
• Auxiliary connection required for MDI.
• Any changes to sensor settings done via MDI buttons.

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Chapter 2: Installation and Removal Procedures and Notes
Installing the MDI requires tools appropriate to the fasteners being used (screw driver, socket driver, etc.).
• Tools Needed
• Mounting Instructions
Specic mounting steps may vary based on mounting methods being used.
A general approach is as follows:
• Use fasteners through 7mm holes on either side of housing for surface mounting of MDI.
• For conduit mounting, make electrical connections (see Electrical Installation, below) prior to nal con-
duit connections.
The MDI should be installed in an area--indoors or outdoors--which meets the following conditions:
• Ambient temperature between -30°C and 85°C (-22°F to +185°F)
• Relative humidity up to 100%
• Altitude up to 2000 meters (6560 feet)
• IEC-664-1 Conductive Pollution Degree 1 or 2
• IEC 61010-1 Measurement Category II
• No chemicals corrosive to stainless steel (such as NH3, SO2, Cl2etc.) or aluminum
• Ample space for maintenance and inspection
• Physical Installation Notes
IMPORTANT: Your MDI MUST be installed according to drawing 9005447 (Intrinsical-
ly Safe Installation Drawing For Hazardous Locations) as indicated above to meet listed
approvals. Faulty installation will invalidate all safety approvals and ratings.
• Install per Document #9005447.
• Use only three-SAFT model LS14500 or three-Xeno model XL-060F battery cells.
• Do not replace batteries when an explosive atmosphere is present.
• The enclosure is manufactured from aluminum. In rare cases, ignition sources due to impact and
friction could occur. This shall be considered during installtion.
• ATEX Stated Conditions of Use