HBM DT85 User manual

A1704-1.1 en
Display and Control Unit
DT85
Operating Manual

3
DT85
HBMA1704-1.1 en
Contents Page
Safety information 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Scope of supply 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Application notes 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Connecting the DT85 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Establish the measurement chain 10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Pin assignment 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Setup and operation 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Set the baud rate 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Startup 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 Operating philosophy 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4 Communication with the PME Assistant 16. . . . . . . . . . . . . . . . . . . . . .
4.5 ZOOM function 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.6 Passcode query 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.7 Overview of display readings 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.8 DT85 menu navigation 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Typical measurement mode displays 27. . . . . . . . . . . . . . . . . . . . . . . . . .
6 Explanations for the fundamental display parameters 29. . . . . . . . . . .
7 Explanation of the main setup parameters 31. . . . . . . . . . . . . . . . . . . . .
8 Error messages 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Specifications (VDI/VDE2638) 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4DT85
HBM A1704-1.1 en
Safety information
Appropriate use
The DT85 with its connected amplifiers must only be used for measurement
tasks and directly associated control tasks. Use for any purpose other than
the above shall be deemed to be inappropriate.
In the interests of safety, the device should only be operated as described in
the Operating Manual. It is also essential to observe the appropriate legal and
safety regulations for the application concerned during use. The same applies
to the use of accessories.
General dangers of failing to follow the safety instructions
The DT85 is a state of the art unit and as such is fail-safe. The device may
give rise to further dangers if it is inappropriately installed and operated by
untrained personnel.
Any person instructed to carry out installation, commissioning, maintenance or
repair of the device must have read and understood the Operating Manual
and in particular the technical safety instructions.
Conditions on site
Protect the device from direct contact with water (IP52 at the front, IP20 at the
back).
Maintenance and cleaning
The DT85 is maintenance-free. Please note the following points when
cleaning the housing:
- Before cleaning, disconnect the device from the power supply.
- Clean the housing with a soft, slightly damp (not wet!) cloth. You should
never use solvent, since this could damage the labeling on the front panel
and the display itself.
- When cleaning, ensure that no liquid gets into the device or the
connections.
Remaining dangers
The scope of supply and performance of the DT85 covers only a small area of
measurement technology. In addition, equipment planners, installers and
operators should plan, implement and respond to the safety engineering
considerations of measurement technology in such a way as to minimize
remaining dangers. Prevailing regulations must be complied with at all times.
There must be reference to the remaining dangers connected with
measurement technology.

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DT85
HBMA1704-1.1 en
Any risk of remaining dangers when working with the DT85 is pointed out in
these instructions by means of the following symbols:
Symbol: WARNING
Meaning: Dangerous situation
Warns of a potentially dangerous situation in which failure to comply with
safety requirements can lead to death or serious physical injury.
Symbol: CAUTION
Meaning: Potentially dangerous situation
Warns of a potentially dangerous situation in which failure to comply with
safety requirements could lead to damage to property and slight or moderate
physical injury.
Symbols for operating instructions and useful information:
Symbol: NOTE
Means that important information about the product or its handling is being
given.
Symbol:
Meaning: CE mark
The CE mark enables the manufacturer to guarantee that the product
complies with the requirements of the relevant EC directives (see Declaration
of Conformity at http://www.hbm.com/support/dokumentation).
Working safely
Error messages must only be acknowledged once the cause of the error has
been eliminated and the danger no longer exists.
The device complies with the safety requirements of DIN EN 61010 Part 1
(VDE 0411 Part 1); protection class I.

6DT85
HBM A1704-1.1 en
To ensure adequate immunity from interference, the bus lines must be
shielded cables.
The power supply connection cables only need to be shielded if the cables
are longer than 30 m or are routed outside closed buildings.
When connecting the cables (attaching and detaching terminals), action must
be taken to prevent electrostatic discharge which could damage the
electronics.
The DT85 must be operated on a safety extra-low voltage (supply voltage
18...30 V DC), which usually supplies power to one or more consumers within
a control cabinet.
Should the device be operated on a dc voltage network1), additional
precautions must be taken to discharge excess voltages.
Conversions and modifications
The DT85 display must not be modified from the design or safety engineering
point of view except with our express agreement. Any modification shall
exclude all liability on our part for any damage resulting there from. In
particular, any repair or soldering work on motherboards is prohibited. When
exchanging complete modules, use only original parts from HBM.
Qualified personnel
This device is only to be installed and used by qualified personnel strictly in
accordance with the technical data and with the safety rules and regulations
which follow. It is also essential to observe the appropriate legal and safety
regulations for the application concerned during use. The same applies to the
use of accessories.
Qualified personnel means persons entrusted with the installation, assembly,
commissioning and operation of the product who possess the appropriate
qualifications for their function.
Maintenance and repair work on an open device with the power on must only
be carried out by trained personnel who are aware of the dangers involved.
1) Distribution system for electrical energy with greater spatial expansion (e.g. over a number of control
cabinets) that may even supply consumers with large nominal currents.

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DT85
HBMA1704-1.1 en
1 Scope of supply
•DT85 display and control unit
•DT85 operating manual
•3-pin connector for the supply voltage
•Two 4-pin connectors for the CAN connection
Accessories (not included in scope of supply):
•Plug-in screw terminal, CAN and supply voltage for the MP85 and the
MP85DP
•3-pin socket
Supplier : Phönix
Designation: MSTB 2.5/3 - ST5.08 Order no.: 1757022
•4-pin socket
Supplier : Phönix
Designation: MSTB 2.5/4 - ST5.08 Order no.: 1757035

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HBM A1704-1.1 en
2 Application notes
The DT85 is an add-on for the twin-channel MP85 and MP85DP amplifiers of
the PME product family.
Most important applications of the DT85:
•Graphical representation of all measured values, evaluation windows and
press-fit curves with OK / NOK decision-making
•Displaying status information
•Viewing all the important MP85 settings
•Loading and storing parameter sets in/from flash or MMC memory
•Setting the most important parameters (e.g. tolerance windows) and
functions (sensor test)
•The DT85 is not suitable as a display for tolerance band mode, as an
evaluation criterion
NOTE
Measurement acquisition, analysis and curves/results storage
take place in the connected PME device. The DT85 serves as
a display and control unit.

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DT85
HBMA1704-1.1 en
3 Connecting the DT85
Information is exchanged between the DT85 and the MP85(DP) modules via
the CAN bus.
Up to 10 MP85 modules can be connected and parameterized. The DT85 can
be supplied with voltage via the screw terminal of the MP85 module.
Low High
Voltage supply and
CAN
X 2
. . . . .max. 10
X 2
X 3
CAN gateway
active
0V +UB
There are two possible applications:
•Connecting the DT85 display via the CAN bus on the MP85(DP) module
•Linking the PC with the DT85 via the second CAN interface (if necessary,
use a dongle at the PC, CAN-USB)
As soon as the PC is connected and the PME Assistant has been started up,
the display is muted and works as a gateway between the MP85 and the PC.
After closing the PME Assistant, the DT85 can be re-activated by the “DT85”
function.
NOTE
The DT85 can be both connected to the MP85(DP) module and
disconnected from the MP85(DP) module while measuring
mode is running, without detriment. This also applies to
connecting a PC to the PME Assistant.

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HBM A1704-1.1 en
3.1 Establish the measurement chain
e.g. PLC
PC with ”PME
Assistant” software
CAN
CAN
External Display
DT85
Sensors
3.2 Pin assignment
X4 X3 X2 X1
CAN PC CAN MP85
RS232 programming
interface 1)
CAN SCREEN
CAN GND CAN L CAN H
CAN SCREE N
CAN GND CAN L CAN H
+UB
GND SCREEN
Underneath the DT85 device
1
5
6
9
GND
TxD
CTS
RS232 interface assignment 1):
RTS RxD
1) Interface for service purposes: monitor, update, configuration