Parker IQAN-MD3 User manual

®
Instruction book
IQAN-MD3
Publ no HY17-8395-IB/UK
Edition February, 2009

ii
Contents
Instruction book, IQAN-MD3
1 Introduction . .... .... .... .... .... .... ..... .... .... .... .... .... ..... .... ....1
Safety symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Precautions . . .... .... .... .... .... .... ..... .... .... .... .... .... ..... .... ....2
General safety regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Construction regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Safety during installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Safety during start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety during maintenance and fault diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3 Product description . . .. .. . .. . .. .. . .. . .. .. . .. . . .. .. . .. . .. .. . .. . .. .. . .. .. . . ..4
IQAN-MD3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
System overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
I/O overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CAN related functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
HMI (human machine interface) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Environment Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
IQAN-MD3 menu system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
System information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Preferences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Internal Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Safe mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Safety . . .. .. . .. .. . .. . .. .. . .. . .. .. . . .. . .. .. . .. . .. .. . .. . .. .. . . .. . .. .. . .. . . . 13
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
CAN-bus interruption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Cyclic diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5 Reliability . . . .. .. . .. .. . .. . .. .. . .. . .. .. . . .. . .. .. . .. . .. .. . .. . .. .. . . .. . .. .. . . 14
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Polarity reversal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Input/output Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6 Mounting . .. . .. .. . . .. . .. . .. .. . .. . .. .. . .. .. . .. . . .. . .. .. . .. . .. .. . .. .. . .. . . . 15
Mounting the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Dashboard or panel assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Mounting considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7 Installation . . .. .. . .. . .. .. . .. . .. .. . .. . . .. .. . .. . .. .. . .. . .. .. . .. . .. . .. . .. . .. 17
Connectors C1 and C2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Connector pin assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Emergency stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Connecting of Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Diagnostic interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
CAN diagnostics connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
USB connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
USB and "ground loops" (differences in ground potential) . . . . . . . . . . . . . . . . . 21
RS232 connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Reference voltage, VREF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

iii
Contents
Instruction book, IQAN-MD3
Connecting sensors and switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Connecting sensors to the voltage inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8 Start-up . . .. . . .. .. . .. . .. .. . .. . .. .. . .. . . .. .. . .. . .. .. . .. . .. .. . .. . .. . .. . .. .. . 26
Start-up procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Starting the control system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Prepare for system start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Start the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Appendix A . . .. .. . . .. . .. . .. .. . .. . .. .. . .. .. . . .. . .. . .. .. . .. . .. .. . .. .. . . .. . . 28
IQAN-MD3 Technical Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Environmental ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
User interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Appendix B . .. .. . . .. . .. .. . .. . .. .. . .. . .. .. . . .. . .. .. . .. . .. .. . .. . .. .. . .. . . .. 31
Error messages and actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Failure Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Failure modes for CAN interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Failure modes for VREF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Failure modes for VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Appendix C . . .. .. . .. . .. .. . .. . .. .. . .. . . .. .. . .. . .. .. . .. . .. .. . .. . .. . .. . .. . .. 33
Dimensioning of the IQAN-MD3 module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

1
Safety symbols
1 Introduction
Instruction book, IQAN- MD3
1 Introduction
These instructions are to be used as a reference tool for the vehicle manufacturer’s
design, production, and service personnel.
The user of these instructions should have basic knowledge in the handling of
electronic equipment.
Safety symbols
Sections regarding safety, marked with a symbol in the left margin, must be read and
understood by everyone using the system, carrying out service work or making changes
to hardware and software.
The different safety levels used in this manual are defined below.
WARNING
Sections marked with a warning symbol in the left margin, indicate that a hazardous
situation exists. If precautions are not taken, this could result in death, serious injury or
major property damage.
CAUTION
Sections marked with a caution symbol in the left margin, indicate that a potentially
hazardous situation exists. If precautions are not taken, this could result in minor injury
or property damage.
NOTICE
Sections marked with a notice symbol in the left margin, indicate there is important
information about the product. Ignoring this could result in damage to the product.
Contact the manufacturer if there is anything you are not sure about or if you have any
questions regarding the product and its handling or maintenance.
The term "manufacturer" refers to Parker Hannifin Corporation.

2
General safety regulations
2 Precautions
Instruction book, IQAN- MD3
2 Precautions
General safety regulations
Work on the hydraulics control electronics may only be carried out by trained
personnel who are well-acquainted with the control system, the machine and its safety
regulations.
WARNING
Mounting, modification, repair and maintenance must be carried out in accordance
with the manufacturer's regulations. The manufacturer has no responsibility for any
accidents caused by incorrectly mounted or incorrectly maintained equipment. The
manufacturer does not assume any responsibility for the system being incorrectly
applied, or the system being programmed in a manner that jeopardizes safety.
WARNING
Damaged product may not be used. If the control system shows error functions or if
electronic modules, cabling or connectors are damaged, the system shall not be used.
WARNING
Electronic control systems in an inappropriate installation and in combination with
strong electromagnetic interference fields can, in extreme cases, cause an unintentional
change of speed of the output function.
NOTICE
As much as possible of the welding work on the chassis should be done before the
installation of the system. If welding has to be done afterwards, the electrical
connections on the system must be disconnected from other equipment. The negative
cable must always be disconnected from the battery before disconnecting the positive
cable. The ground wire of the welder shall be positioned as close as possible to the
place of the welding. The cables on the welding unit shall never be placed near the
electrical wires of the control system.
Construction regulations
CAUTION
The vehicle must be equipped with an emergency stop which disconnects the supply
voltage to the control system's electrical units. The emergency stop must be easily
accessible to the operator. The machine must be built if possible, so that the supply
voltage to the control system's electrical units is disconnected when the operator leaves
the operator’s station.
Safety during installation
CAUTION
Incorrectly positioned or mounted cablingcan be influenced by radio signals which can
interfere with the functions of the system.

3
General safety regulations
2 Precautions
Instruction book, IQAN- MD3
Safety during start-up
WARNING
The machine's engine must not be started before the control system is mounted and its
electrical functions have been verified.
Ensure that no one is in front, behind or nearby the machine when first starting up the
machine.
Follow the instructions for function control in the Start-up section.
Safety during maintenance and fault diagnosis
CAUTION
Ensure that the following requirements are fulfilled before any work is carried out on
the hydraulics control electronics.
• The machine cannot start moving.
• Functions are positioned safely.
• The machine is turned off.
• The hydraulic system is relieved from any pressure.
• Supply voltage to the control electronics is disconnected.

4
IQAN-MD3
3 Product description
Instruction book, IQAN- MD3
3 Product description
IQAN-MD3
IQAN-MD3 is a combined display and bus master capable of running applications
created by IQANdesign. Built on a 32-bit platform the unit has large computational
power and is capable of controlling large applications.
The IQAN-MD3 module.
System overview
The master module, IQAN-MD3, is the central unit in the system. IQAN-MD3 has
three CAN buses. Two buses support ICP and are able to control expansion units such
as XA2, XS2, XT2, Lx and XR. SAE J1939 and Generic CAN are also supported on
the CAN buses and gives the possibility to interface to 3rd party units. A third CAN
bus is available for diagnostic purposes.
"Soft" function buttons and control buttons in combination with a graphical display
makes system feedback with user interaction possible. The display in the module has
very high optical performance across a wide operating temperature range and over a
wide range of ambient light.
IQAN-MD3 has voltage and digital inputs that are designed to be flexibly configured
using IQANdesign software. The unit also has a low power digital output.
All I/O are EMI filtered and protected against short circuit to -BAT and +BAT.
A typical IQAN-MD3 system
Levers and sensors IQAN-MD3
Expansion units

5
IQAN-MD3
3 Product description
Instruction book, IQAN- MD3
I/O overview
Inputs/Outputs
The IQAN-MD3 module has seven (7) voltage inputs VIN-A thru VIN-G for
connection of 0-5 Vdc signals. These inputs can be configured as digital inputs for
reading switches. Voltage inputs and digital inputs share positions, see below.
There is a digital output, DOUT-A, on IQAN-MD3 that may be activated when there is
an error message for the system, such as a short-circuit and input or output interruption.
By connecting the digital output to a warning lamp or audio signal, the driver is alerted
that an error message has been given.
Connect the alarm (audio signal) between pin C2:12 and ground (the battery’s negative
pole). See the illustration below. An active output gives battery voltage (11-32 Vdc) to
the pin. The maximum load is 200 mA.
Connection of DOUT as an alarm output.
CAN related functions
The IQAN-MD3 uses three CAN-buses (CAN = Controller Area Network) to
communicate with IQAN expansion modules, other systems and diagnostics.
(7) Voltage inputs VIN-A, VIN-B, VIN-C, VIN-D.....VIN-G
or
(7) Digital inputs DIN-A, DIN-B, DIN-C, DIN-D...... DIN-G
+BAT CAN-H
CAN-L
PORT 1
-BAT
+VREF
-VREF
PORT 0
CAN-H
CAN-L
+RTC
RS232-DATA IN
RS232-DATA OUT
RS232-READY
MD3
USB-D+
USB-D-
CAN-H/Diag
CAN-L/Diag
11 10 987
6
54
32
1
12
12
7

6
HMI (human machine interface)
3 Product description
Instruction book, IQAN- MD3
Diagnostics
The IQAN-MD3 is equiped with a 3rd CAN bus dedicated for diagnostic purposes.
This function is available when using IQANdesign 2.0 version or higher.
NOTICE
It is recommended to use the 3rd bus only for diagnostic purposes.
Communication
The IQAN-MD3 has one RS232 port for remote diagnostics via modem
communication and one USB port for connection with a PC.
HMI (human machine interface)
IQAN-MD3 front panel HMI.
Features
IQAN-MD3 has a 3.5" transflective TFT color display, 320x240 pixels for reading
system information. The front of IQAN-MD3 consists of a control panel with a display
and nine buttons.
• F1 thru F4 function buttons.
Programmable ’softkeys’ that can be configured by IQANdesign software to bring
up a display page, bring up an adjustment group or act as a virtual input.
• Up and down arrow buttons , .
Navigation buttons that are used to scroll thru selections on a menu page. May be
configured by IQANdesign software to bring up a display page, bring up an
adjustment group or act as a virtual input.
• OK button .
Pushing this button equals ’enter’. Saves the value or confirms the selection you
have made.
• Menu button .
Always brings up the Menu page. It is not programmable.
• ’Esc’ or BACK button .
Returns you to the previous display page. May be configured by IQANdesign
software to bring up a display page, bring up an adjustment group or act as a virtual
input.

7
HMI (human machine interface)
3 Product description
Instruction book, IQAN- MD3
Display
Brightness
The brightness is easily adjusted by pressing the ’menu’ button and following the
prompts to the backlight settings section.
Burn-in
The IQAN-MD3 TFT display, like other computer screens can have a ghost picture
occur if a static image is left on the display for extended periods of time. For the best
viewing over the life of the product we recommend using the screensaver functionality.
NOTICE
To avoid burn-in, use the screensaver on the display.
Maintenance
The 3.5" transflective display is a high quality viewing interface and reasonable care
should be taken to maintain it.
The display can be cleaned with an LCD cleaning solution found in many stores. Use a
lightly dampened lint-free, non-abrasive cloth when cleaning the display.
NOTICE
To avoid scratches, do not wipe or clean a dry display.
Environment Specification
IQAN-MD3 is a hardened module suitable for outdoor use. However, concentrating
cleaning jets on the control surface of the IQAN-MD3 can cause a degradation of the
finishing and should be avoided.
NOTICE
To keep the unit’s buttons looking their best, do not blast the control surface with
cleaning jets.
Back of unit
If the rear surface of the IQAN-MD3 unit is exposed and will be subjected to high
pressure steam cleaning, care should be taken around the connector assemblies. The
Deutsch DTM connectors are IP67 rated which is suitable for any type of outdoor
conditions. However, concentrating the cleaning jets on the connectors of the IQAN-
MD3 can cause damage to the connector seals or wire insulation and should be
avoided. Use of shielding is recommended to block high pressure cleaning jets, if the
rear of the unit is exposed.
NOTICE
To avoid damaging the connector seals or wire insulation, do not blast the connectors
with cleaning jets.

8
IQAN-MD3 menu system
3 Product description
Instruction book, IQAN- MD3
IQAN-MD3 menu system
The IQAN-MD3 has an easy to use graphical user interface and menu system. In the
display’s menu system, you get access to information and settings concerning the
IQAN system.
Menu navigation flowchart.
Overview
The menu system is an easy to use set of pages in the IQAN-MD3 that allow you to see
module information and logs, set preferences, measure system I/O or adjust
parameters.
All of this is done using the control and function buttons on the face of the IQAN-
MD3. To begin, go to the main menu page by simply pressing the ’menu’ button (three
horizontal lines). You may return to the operating display at any time by pressing the
menu button again.
Main menu page.
Operating
display page
Menu page
Adjustment
page
Measurement
page
Preferences
page
Information
page
From any page:
Press menu to quit or
press escape to go back
to the previous page
Press menu button
Select
adjust group
Select
measure group
Select
display, time
or language
Select
module,
modem or log
Change
settings
View
information
Press a function button
Select function
or channel
Select raw or
scaled value
Change
parameters or
reset to defaults
View
measurements
menu button
Main
Measure
Adjust Preferences Info

9
IQAN-MD3 menu system
3 Product description
Instruction book, IQAN- MD3
System information
To see information about your system press the button on the main menu page under
the ’Info’ icon, F4. This will bring up the information page which displays the loaded
application name, the last person who performed an edit and when the edit was done.
Other button options now appear for the function buttons that allow you to view
information about modules, modem or logs. To return to the previous (main menu)
page you can press the ’escape’ button. The ’escape’ button always takes you back to
the previous page. If you have chosen to view information on any of the other pages
you are given the option to simply press the button under the ’Main’ icon, F1.
Information page.
Preferences
To set preferences for the IQAN-MD3 press the button on the main menu page under
the ’Preferences’ icon, F3. This will bring up the preferences page. Other button
options now appear for the function buttons that allow you to set preferences for the
display, date/time or language. To return to the previous (main menu) page you can
press the ’escape’ button. If you have chosen to view information on any of the other
pages you are given the option to simply press the button under the ’Main’ icon, F1.
Preferences page.
esc button
Main
Measure
Adjust Preferences Info
to goback
esc button
Main
Measure
Adjust Preferences Info
to goback

10
IQAN-MD3 menu system
3 Product description
Instruction book, IQAN- MD3
Measuring
If you would like to measure any channels using the IQAN-MD3 press the button on
the main menu page under the ’Measure’ icon, F2. This will bring up the measure page
that displays the measure groups that have been set up in IQANdesign. To select a
measure group you press the up or down buttons until it is highlighted and then press
’OK’. That takes you to a page where you may view the channels in the selected group.
Button F2 may now be used to toggle between raw values and scaled values for the
channels. To return to the measure page you can press the ’escape’ button. To return to
the main menu page, you are given the option to simply press the button under the
’Main’ icon, F1.
Measure page.
Adjusting
If you would like to adjust any channels using the IQAN-MD3 press the button on the
main menu page under the ’Adjust’ icon, F1. This will bring up the adjust page that
displays the adjustable groups that have been set up in IQANdesign. To select an
adjustable group you press the up or down buttons until it is highlighted and then press
’OK’. That will take you to the next page, where you may view the channels in the
selected group. If a lock icon, is next to the group in the list, then a pin code is
required to access that group. Press the up, down and OK buttons to enter the pin code
Adjust page.
press OK
Main
Measure
Adjust Preferences Info
to select
press OK
Main
Measure
Adjust Preferences Info
to select
lock icon

11
IQAN-MD3 menu system
3 Product description
Instruction book, IQAN- MD3
Once you have selected a group, a list of the adjustable channels is displayed. You may
select a particular channel in the same way you selected the group, by using the up and
down buttons and pressing OK. To choose the plusor minus direction for adjusting, use
the appropriate function button F3 or F4. The current parameters for the highlighted
direction are displayed on the right side of the display window. When you have
highlighted the desired channel and direction, press OK.
Adjust group page.
Adjusting a parameter
Now you are at the page where the actual adjustment is done. You may toggle through
the different parameters by pressing OK repeatedly. When the parameter you wish to
adjust is highlighted, you may change it by pressing the up and down buttons. The
displayed values change to give you feedback. At any time after adjustments have been
made, if you want to return to the default values of the application, you may press the
button under the ’Reset’ icon, F2. To return to the previous page you can press the
’escape’ button. To return to the main menu page, you are given the option to simply
press the button under the ’Main’ icon, F1.
Adjusting a parameter.
press OK
Main
Measure
Adjust Preferences Info
to select
press up and
Main
Measure
Adjust Preferences Info
down to adjust

12
Internal Diagnostics
3 Product description
Instruction book, IQAN- MD3
Internal Diagnostics
The IQAN-MD3 has a diagnostics page. This page can be useful for obtaining
diagnostic information. To view the test page, press the menu and escape buttons
simultaneously and hold during power up. To exit test mode, turn the unit off and
power up normally.
Accessing the diagnostics page.
Safe mode
If necessary, the IQAN-MD3 may be started in safe mode. When started in safe mode,
no application is loaded and nothing is running. The screen shows a default background
and a dialog box notifies the user that the unit is in safe mode. This can be useful for
installing an IQAN-MD3 with an unknown application in memory, when retrofitting of
new hydraulic components has occurred or if a user has somehow changed the
application in an unacceptable way. To start in safe mode, press the escape button and
hold during power up. In safe mode you can then upload a new application to the
IQAN-MD3. To exit safe mode, turn the unit off and power up normally.
menu button
esc button

13
General
4 Safety
Instruction book, IQAN- MD3
4 Safety
General
In order to fulfill high safety demands, the IQAN-MD3 uses a real-time operating
system for fault tolerant embedded systems. The IQAN-MD3 has an internal watchdog
function. If the watchdog detects any software errors, necessary precautions will be
activated.
CAN-bus interruption
The IQAN-MD3 has special safety functions if the CAN-bus is interrupted. Each
module checks for any interruptions in the CAN-bus communication. If an error occurs
the master will present a related message on the display.
Cyclic diagnostic
The IQAN-MD3 module will execute a self-test during operation to verify the
software. The test includes a CAN-bus verification, processor and memory verification
and an internal signal verification. If any software error is detected, appropriate
precautions will be activated.

14
General
5 Reliability
Instruction book, IQAN- MD3
5 Reliability
General
In order to provide the robust performance expected by our customers, the IQAN-MD3
has protections for its internal circuitry.
Polarity reversal
The IQAN-MD3 is protected against power supply polarity reversal, provided an
external fuse, max 3 A (fast) is being used. Polarity reversal can damage the unit if the
fuse is not used.
Input/output Protection
All inputs on the IQAN-MD3 are designed to withstand the maximum specified supply
voltage. The output is protected against short circuit. Furthermore, an error on one
input will not influence other inputs.

15
Mounting the unit
6 Mounting
Instruction book, IQAN- MD3
6 Mounting
Mounting the unit
The IQAN-MD3 unit should be mounted according to the following instructions.
Dashboard or panel assembly
• When installing in a dash or panel the recommended panel thickness is 1.0 - 3.5
mm. Use PT40 screws to mount the unit.
Mounting the IQAN-MD3.
NOTICE
Select the screw length so that the thread engagement in the unit is 8-11 mm.
• Less engagement and the screw may not hold.
• More engagement and the housing may be damaged.
96
118
82
91
Mv-0.8-1.0 Nm
PT40 screw
ø4.5
R8.0 max

16
Mounting the unit
6 Mounting
Instruction book, IQAN- MD3
Mounting considerations
NOTICE
IQAN-MD3 shall be positioned in the machine per the following instructions:
• The unit is designed for outdoor use. Position the unit in desired location and make
sure that it is not exposed to mechanical damage.
• The connectors on the reverse side of the unit should be accessible.
• Position the unit so there is no risk that the cabling can be folded, crushed, worn or
damaged in any way.
• Leave sufficient room behind the unit to insert connectors. Less than 75 mm
clearance will stress the cabling and distort the seals in the connectors. This can
cause the environmental specification not to be met.
Distance behind the unit.
NOTICE
Take careful consideration when positioning the unit.
• Position the unit so there is no risk to be exposed to external heat, e.g. from the
engine or heater.
• The best readability will be achieved by positioning the front face of the unit
directly towards the operator.
• Extended periods of exposure to direct sunlight can cause an internal temperature
exceeding 75°C which may cause permanent degradation of the LCD display.
NOTICE
Both of the connectors, C1 and C2, must be properly installed in the unit.
• If you leave a connector unplugged, the unit will not be sealed.
• If unused wire positions in a connector are not closed with the recommended plugs,
the unit will not be sealed.
75 mm
22 mm
48 mm

17
Connectors C1 and C2
7 Installation
Instruction book, IQAN- MD3
7Installation
Connectors C1 and C2
NOTICE
No pin may be "double crimped". That means only one wire may be attached to any
given pin. Failure to follow this instruction will cause the module to not meet the
environmental specification.
Make "Y" connections or splices using weatherproof methods external to the IQAN-
MD3 connectors.
Connector kit Parker 20073081 C1 (DTM12 key A)
Housing, C1 Deutsch no. DTM06-12-SA
Pin type Deutsch no. 1062-20-0222
Wedge type Deutsch no. WM12S
Sealing plug Deutsch no. 0413-204-2005
C2 (DTM12 key B)
Housing, C2 Deutsch no. DTM06-12-SB
Pin type Deutsch no. 1062-20-0222
Wedge type Deutsch no. WM12S
Sealing plug Deutsch no. 0413-204-2005
Recommended
cable 0.75-1 mm2 (18 AWG)
5
4
3
2
1
12 11 10 987
6
11 10 987
6
54
32
1
12
+BAT CAN-H
CAN-L
PORT 1
-BAT
+VREF
-VREF
PORT 0
CAN-H
CAN-L
+RTC
RS232-DATA IN
RS232-DATA OUT
RS232-READY
MD3
USB-D+
USB-D-
CAN-H/Diag
CAN-L/Diag