Datcon DT9102 I4 User manual

DT9102 I4
Intrinsically Safe Digital Clock
Operating Instructions

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Contents
1. About this document .....................................................4
1.1. Function ................................................................................... 4
1.2. Target group............................................................................. 4
1.3. Symbolism used....................................................................... 4
2. For your safety ...............................................................5
2.1. Authorised personnel ............................................................... 5
2.2. Appropriate use........................................................................ 5
2.3. Warning about misuse ............................................................. 5
2.4. General safety instructions....................................................... 5
2.5. CE conformity........................................................................... 5
2.6. Safety information for Ex areas................................................ 6
2.7. Environmental instructions ....................................................... 6
3. Product description .......................................................7
3.1. Delivery configuration............................................................... 7
3.2. Principle of operation ............................................................... 8
3.3. Adjustment ............................................................................... 9
3.4. Storage and transport .............................................................. 9
4. Mounting.......................................................................10
4.1. General instructions ............................................................... 10
4.2. Main dimensions of the instrument ........................................ 11
4.3. Mounting procedure ............................................................... 12
5. Connecting ...................................................................14
5.1. Preparing the connection ....................................................... 14
5.2. Connecting the digital outputs................................................ 15
5.3. Connecting into the current loop (synchronising input) .......... 16
6. Display and manual controls ......................................18
6.1. The first start-up ..................................................................... 18
6.2. Characters and mnemonics appearing on the display ........... 19
6.3. Manual controls...................................................................... 21

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7. Setting-up .....................................................................22
7.1. Typing the code (password) in ............................................... 22
7.2. The menu ............................................................................... 24
7.3. Time set (01. menu item) ....................................................... 25
7.4. Fast time set (02. menu item) ................................................ 26
7.5. User code (03. menu item)..................................................... 27
7.6. Synchronisation mode (04. menu item) ................................. 29
7.7. Synchronisation time (05. menu item).................................... 30
7.8. Synchronisation gate time (06. menu item)............................ 31
7.9. Digital output 1 (07. menu item) ............................................. 32
7.10. Digital output 2 (08. menu item) ........................................... 33
7.11. Changing the supervisor code (09. menu item) ................... 34
7.12. Tests (10. menu item) .......................................................... 36
8. Fault rectification .........................................................38
8.1. Fault finding............................................................................ 38
8.2. Repairing................................................................................ 38
9. Dismounting .................................................................38
9.1. Dismounting procedure .......................................................... 38
9.2. Disposal ................................................................................. 38
10. Appendix.....................................................................39
10.1. Technical specifications ....................................................... 39
10.2. Application example ............................................................. 41
10.3. Error messages.................................................................... 42
10.4. Messages of critical errors ................................................... 43
10.5. Description of the menu items.............................................. 44
10.6. Messages and error messages during setting up ................ 47
10.7. Time set (example) .............................................................. 48
10.8. ATEX Certification................................................................ 50

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1. About this document
1.1. Function
This operating instructions manual has all the information
you need for quick set-up and safe operation of DT9102 I4.
Please read this manual before you start setup.
1.2. Target group
This operating instructions manual is directed to trained
personnel. The contents of this manual should be made
available to these personnel and put into practice by them.
1.3. Symbolism used
Information, tip, note
This symbol indicates helpful additional information.
Caution, warning, danger
This symbol informs you of a dangerous situation that could
occur. Ignoring this cautionary note can impair the person
and/or the instrument.
Ex applications
This symbol indicates special instructions for Ex
applications.
•
List
The dot set in front indicates a list with no implied sequence.
→
Action
This arrow indicates a single action.
1
Sequence
Numbers set in front indicate successive steps in a
procedure.

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2. For your safety
2.1. Authorised personnel
All operations described in this operating instructions
manual must be carried out only by trained and authorised
specialist personnel. For safety and warranty reasons, any
internal work on the instruments must be carried out only by
DATCON personnel.
2.2. Appropriate use
The DT9102 I4 is a 4–20mA loop-powered intrinsically safe
digital clock. Detailed information on the application range o
f
the DT9102 I4 is available in chapter „Product description”.
2.3. Warning about misuse
Inappropriate or incorrect use of the instrument can give rise
to application-specific hazards, or demage to system
components through incorrect mounting or adjustment.
2.4. General safety instructions
The DT9102 I4 is a high-tech instrument requiring the strict
observance of standard regulations and guidelines. The
user must take note of the safety instructions in this
operating instructions manual, the country-specific
installation standard as well as all prevailing safety
regulations and accident prevention rules.
2.5. CE conformity
The DT9102 I4 is in conformity with the provisions of the
following standards:
MSZ EN IEC 60079-0:2018 (ATEX)
MSZ EN 60079-11:2012 (ATEX)
MSZ EN IEC 61326-1:2021 (EMC)

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2.6. Safety information for Ex areas
Please note the Ex-specific safety information for installation
and operation in Ex areas. These safety instructions are
part of the operating instructions manual and come with the
Ex-approved instruments.
2.7. Environmental instructions
Protection of the environment is one of our most important
duties.
Please take note of the instructions written in the following
chapters:
•Chapter 3.4. Storage and transport
•Chapter 9.2. Disposal

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3. Product description
3.1. Delivery configuration
Delivered items The scope of delivery encompasses:
•DT9102 I4 digital clock
•2 pcs. of srew clamps (only panel mounting version)
• instrument sealing
•documentation:
this oparating instructions manual
certification
warranty
The instrument is built from the following main parts:
Main parts
1. instrument case
2. front panel with 3 mambrane push buttons

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3.2. Principle of operation
Area of application DT9102 I4 is an intrinsically safe digital clock enable
accurate time to be displayed in even the most hazardous
plant areas: Zone 1, 2 or in the safe area.
Synchronising function allows the clock to be synchronised
with a master clock. The clock can be synchronise through
the current loop. When the loop current is over 12 mA the
clock stop going when the loop current decrease under
8 mA the clock will re-start from a new time selected in the
programme menu. This may be the nearest minute or the
nearest hour of the original display or a preset time may be
entered during programming.
The DT9102 I4 has two isolated digital outputs, which can
be used for alarm signaling or for synchronising other
clocks.
DT9102 I4 is housed in a moulded polycarbonate case
hauseproof to IP65 for installation in the field or on the
control panel.
Operating principle
The clock incorporate a high accuracy temperature
compensated time base, which is processed by a
microcontroller. The microcontroller produces the real time,
in 24 hour HH:MM format, drives the large 4 digit 25,4 mm
height LCD display, process the front panel keypad, the
synchronising inputs, and drives the digital outputs. The
settings and the actual time are stored in a memory which
stores it’s content for cca. 1 hour for bridging the supply
current failure. The clock also going for cca. 1 hour at this
case.
Power supply DT9102 I4 is loop-powered from 4–20 mA synchronising
signal, dropping less than 2,2 V.
It is not recommended to bring the supply current below 8
mA.

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3.3. Adjustment
The DT9102 I4 can be adjusted through the 3 front panel
membrane keypad. The instrument doesn’t need any
internal adjustment.
All settings are stored in a battery back-up RAM.
At first installation you have to set the time and other
working parameters what you need.
At battery replacement the settings are kept for min. 1 hour.
3.4. Storage and transport
This instrument should be stored and transport in places
whose climatic conditions are in accordance with Chapter
10.1. Technical specifications, as described under the
title: Environmental conditions.
The packaging of DT9102 I4 consist of enviroment-friendly,
recyclable cardboard is used to protect the instrument
against the impacts of normal stresses occurring during
transportation. The corrugated cardboard box is made from
environment-friendly, recyclable paper. The inner protective
material is polyfoam and nylon, which should be disposed of
via specialised recycling companies.

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4. Mounting
4.1. General instructions
Use the enclosed seal when mounting DT9102 I4 on panel
to assure IP 65 protection between the instrument and the
panel from the front side (only panel mounting version).
Electrostatic hazard! Clean only a moist cloth and
detergent.
Mounting positions
Select a mounting position you can easily read the display
reach for mounting and connecting the instrument and that
minimises the hazard of water, dust or dump getting into the
instrument.
Mounting cable entries
The insrument is equipped with one M16x1.5 cable entry
and one additional hole equipped with sealing plugs. One
M16x1.5 cable entry is accessory. If required more than one
cable entry (see chapter 5.) put out the sealing plug turning
it in anticlockwise direction. To put in the cable entry use the
sealing turn it in clockwise direction. Tighten the screws so
much that ensures the desired sealing. Use only appropriet
tools.

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4.2. Main dimensions of the instrument

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4.3. Mounting procedure
Preparatory steps
1. Cut-out the panel according to the figure shows below.
The cut-out needs special tools, it must be carried out by
trained specialist personnel.
Cut-out dimensions
2. Put on the enclosed seal onto the instrument case from
the rear side and fit it to the instrument front panel back
side.
3. Put the instrument into the prepared cut-out until it
possible and check the seal between the case and the
mounting surface.

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Mounting by the fixing
clamps
4. Put on the two enclosed fixing clamps onto the sides of
the instrument case (Figure step 1).
Fix the instrument by turning the srews in clockwise
direction (Figure step 2).

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5. Connecting
5.1. Preparing the connection
Select and prepare
connection cable
How to use the push in
direct connectors
Always observe the following safety instructions:
• When you are going to install instruments in hazardous
area or install instruments which are connecting to
instruments are working in hazardous area you should take
note of the appropriate regulations, conformity and type
approval certificates of the DT9102 I4 and the other
instruments (e.g. isolator, Zener barrier). The connection
must be carried out by trained and authorized personnel
only!
Take note of the corresponding installation regulations for
Ex applications. In particular, make sure that no potential
equalization currents flow over the cable screen. Ground
only one side the cable screen.
• Use only a screwdriver with appropriate head.
Take note the suitability of the connecting cable
(wire cross-section, insulation, cable screen, etc.).
The wire cross-section should be 0.25–1.5 mm2.
You may use either solid conductor or flexible conductor.
In case of using flexible conductor use crimped wire end.
1. Remove approx. 30 mm of cable mantle, strip
approx. 8 mm insulation.
2. Remove the instrument front cover (see chapter 4.3.).
3. Loosen compression nut of the cable entry.
4. Insert the cable into the instrument through the cable
entry.
1. Push the cable-end until it possible into the terminal
assembly.
2. By pushing the wire in, the self-closing connection is
being established. Check it by pulling it outwards slightly.
(3. When you disassemble the cable, push down the white
button by a screwdriver, and pull the cable-end out.)
There is no need to use great force for pushing the cable in,
neither for removal. The button can be pushed down easily.
Please do not exercise forces higher than necessary, as it
may cause damages to the terminal assembly.

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5.2. Connecting the digital outputs
A DT9102 I4 digital output is an output for direct driving an
other DT910x B clock synchronising input or a NAMUR
input.
You may connect an instrument to the output which input is
in comformity with the following output paremeters:
Uo < 10 V, Io < 200 mA, Po < 0,5 W.
The following figure shows the connection:
Wiring plan, connecting
the digital outputs
(see also “Application
example”)
Be careful the polarity of
the cables.
1. Push the cable-end until it possible into the terminal
assembly. By pushing the wire in, the self-closing
connection is being established.
2. Check it by pulling it outwards slightly.

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5.3. Connecting into the current loop (synchronising
input)
• The DT9102 I4 acts as a terminal device of the current
loop. In this case the signal comes via a pair of wires, and it
does not have to go to other devices.
The following figure shows the connection:
Wiring plan, connecting
into the current loop
(synchrinising input)
(see also “Application
example”)
Be careful the polarity of
the cables
1. Push the cable-end until it possible into the terminal
assembly. By pushing the wire in, the self-closing
connection is being established.
2. Check it by pulling it outwards slightly.

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•The DT9102 I4 is situated in the „middle” of the current
loop. In this case one cable comes from the signal source
and another cable goes to the next unit(s).
The following figure shows the connection:
Wiring plan, connecting
into the curren loop
(synchrinising input)
(see also “Application
example”)
Be careful the polarity of
the cables
1. Push the cable-end until it possible into the terminal
assembly. By pushing the wire in, the self-closing
connection is being established.
2. Check it by pulling it outwards slightly.
Checking the
connections
Check if the cables are connected properly (have you
connected all the cables, have you connected to the right
place, do not the cable-ends touch each other).

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6. Display and manual controls
6.1. The first start-up
The display
The display is indicated by the arrow (1)
After the instrument has been installed and connected to
the power supply, first you see on the display:
Type of instrument: , 
Type of power supply: 
Initialization: 
Factory default: 
In the case of an error
message
If anything else appears on the display instead of the
numbers showing the current value (e.g. a message with
blinking letters), then it is an error message of the
instrument.
In order to define the error more accurately, please go to
Chapter 10.3. Error messages or 10.4. Messages of
critical errors, found at the end of this Manual, in the
Appendix.

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6.2. Characters and mnemonics appearing on the
display
DT9102 I4 has a 7-segment type display. It means that
maximum 7 bars are used to form each characters. The
numbers can be read easily, some of the letters, marks
however, looks unusual:
= A, = B, = C, = D, = E, = F, = G,
= H,= I, = J, = K, = L, = M, = N,
= O, = P, = Q, = R, = S, = T, = U,
= V, = W, = X, = Y, = Z
All mnemonics (code words) presented on the display
comes from English expressions in abbreviated form.
The following part gives a list of the possible mnemonics
and their meaning. The left-side column shows the
characters appearing on the display. The right-side column
gives first the meaning, then the full English word in
brackets and, after the hyphen, and explanation may be
given.
Login text
 DT — Datcon instrument
 9100 — Type of the instrument
 I4 – Type of power source

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Messages of critical
errors
 Default factory settings (Service: Default Factory Settings)
During code writing
 Code? (Code)
 Bad Code (Bad Code)
 A User login took place (User)
 A Supervisor login took place (Supervisor)
During setting up
 Bad input value (Error)
 Re-type it please (Re-type)
 Automatic escaping (time out) — after 1 minute
 Exit from the setting (Exit)
 The instrument is making calculations, please wait
(Busy)
 The requested operation has been completed (Ready)
 The saving of the settings is being done (Save)
 No, I don’t want this menu (No)
 Yes, the menu can be started (Yes)
 Cancel, I don’t want this setting (Cancel)