APG MDI Installation Manual

Thank You
Thanks for purchasing an MDI Intrinsically Safe Modbus Display from us! We appreciate your
business and your trust. Please take a moment to familiarize yourself with the product and this
manual before installation. If you have any questions, at any time, don't hesitate to call us at 888-
525-7300.
 NOTE: Scan the QR code to the right to see the full
user manual on your tablet or smartphone. Or visit
https://www.apgsensors.com/support to find it on our
website.
Table of Contents
1.Description 5. Dimensions & User Interface
2. How To Read Your Label 6. Wiring Diagrams
3. Warranty 7. Menu Flow Chart
4. Mounting Instructions & 8. Repair Information
Electrical Installation
Description
1
The MDI Intrinsically Safe Modbus Network Display and Controller provides a local display in a Class
I, Zone 1 hazardous area that can monitor and control a sensor within a Class I, Zone 0, or Class I,
Zone 1 area. The MDI can supply power to the sensor it controls, creating a complete monitoring-
and-control system within the hazardous area.
How To Read Your Label
2
Each label comes with a full model number, a part number, and a serial number. The model
number for the MDI will look something like this:
 SAMPLE: MDI-94020-1M5C30-00-0-0
The model number tells you exactly what you have. You can also call us with the model, part, or the
serial number and we can help you.
Warranty
3
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.
Mounting Instructions & Electrical Installation
4
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 NH
• Ample space for maintenance and inspection
ATEX Stated Conditions of Use
• 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.
Specific 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 prior to final conduit connections.
 IMPORTANT: Ensure settings on MDI are correct prior to installation. Settings cannot be
adjusted while MDI is installed in explosive environment. See section 7 for Menu Flow Chart
and see Manual for full programming instructions.
For MDI Controlling Single IS Sensor:
• For MDI with connector: Mate connector to sensor, or to connector attached to sensor.
• For MDI with flying leads: Connect the leads to terminal strip in junction box or on sensor.
• Ensure MDI enclosure is properly connected to Earth Ground.
For MDI Controlling Single IS Sensor with Passive Control Equipment:
• Connect MDI to sensor, using instructions above.
• Connect MDI to Approved IS Barrier using methods outlined above.
• Last, connect Passive Control Equipment to Approved IS Barrier.
• Ensure MDI enclosure is properly connected to Earth Ground.
Use care in selecting externally connected equipment to ensure that circuits are appropriately
isolated from hazardous live potentials (SELV or PELV), as specified in CAN/CSA C22.2 No. 61010-1.
 IMPORTANT: Your MDI MUST be installed according to drawing 9005447 (Intrinsically Safe
Installation Drawing For Hazardous Locations) in section 9 to meet listed approvals. Faulty
installation will invalidate all safety approvals and ratings.
9. Hazardous Location Wiring
10. General Care
, SO , Cl etc.) or aluminum
3 2 2
MDI - Intrinsically Safe Modbus Display
Installation Guide
APG
R
Automation Products Group, Inc.
1025 W 1700 N Logan, UT 84321
www.apgsensors.com | phone: 888-525-7300 | email: sales@apgsensors.com
Dimensions & User Interface
5
4.15"
105.5 mm
Position 1
3" Aluminum Housing
4.94"
125.5 mm
Position 1
4" Aluminum Housing
External
Power/Decrease
Button
Battery Meter
Increase Button
Decrease/Power Button
During MDI operation
Increase Button:
Cycles through sensor readings for multiple display configuration.
Decrease/Power Button:
Press to enter the Main Menu.
Press and hold for 1 second to power MDI on or off.
Enter Button:
Cycle between readings selected in ENTR menu.
4.92"
125 mm
4.09"
104 mm
Grounding Screw
Position 2
7 mm hole
4.25"
108 mm
5.71"
4.53" 145 mm
115 mm
Grounding Screw
Position 2
7 mm hole
4.96"
126 mm
Scalable Bar Graph
Units Label/Sensor Label
Enter Button
User Interface
Part # 200334
Doc #9005618 Rev A