ADCA UD-720 User manual

INSTALLATION AND MAINTENANCE
INSTRUCTIONS
UD-720
UNIVERSAL DISPLAY

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VALSTEAM ADCA We reserve the right to change the design and material of this product without notice.
2IMI UD720 E 06.17
CONTENTS
1. GENERAL.............................................................................................................................................................3
2. APPLICATION ......................................................................................................................................................3
3. TRANSPORT AND STORAGE.............................................................................................................................3
4. DELIVERED SET..................................................................................................................................................3
5. BASIC REQUIREMENTS AND OPERATIONAL SAFETY...................................................................................4
6. INSTALLATION.....................................................................................................................................................4
6.1. DEVICE INSTALLATION...................................................................................................................................4
6.2. ELECTRICAL CONNECTIONS.........................................................................................................................5
6.3. INSTALLATION RECOMMENDATIONS...........................................................................................................5
7. STARTING TO WORK..........................................................................................................................................6
7.1. DISPLAY DESCRIPTION..................................................................................................................................6
7.2. BUTTON FUNCTIONS......................................................................................................................................6
8. SERVICE ..............................................................................................................................................................7
8.1. PROGRAMMING...............................................................................................................................................8
8.2. PROGRAMMING MATRIX ................................................................................................................................9
8.3. CHANGING FLOATING-POINT VALUES.......................................................................................................10
8.4. PARAMETER DESCRIPTION.........................................................................................................................10
8.5. INDIVIDUAL CHARACTERISTIC....................................................................................................................16
8.6. ALARMS..........................................................................................................................................................18
8.7. DISPLAY FORMAT .........................................................................................................................................19
8.8. MANUFACTURER’S PARAMETERS .............................................................................................................19
9. RS-485 INTERFACE WITH MODBUS PROTOCOL..........................................................................................21
9.1. INTRODUCTION.............................................................................................................................................21
9.2. REGISTER MAP..............................................................................................................................................21
10. ERROR CODES..............................................................................................................................................33
11. TECHNICAL DATA..........................................................................................................................................34
12. ORDERING CODES........................................................................................................................................35
13. PRODUCT RETURNING.................................................................................................................................35

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VALSTEAM ADCA We reserve the right to change the design and material of this product without notice.
3IMI UD720 E 06.17
1. GENERAL
These instructions must be carefully read before any work involving products supplied by VALSTEAM ADCA
ENGINEERING S.A. is undertaken.
Note:
Current regional safety regulations should be taken in to account and followed, while doing the installation and
maintenance work.
Handling, installation and maintenance work must be carried out by trained personnel. A supervisor must follow
and check all activities.
For the problems that cannot be solve with the help of this instructions, please contact the supplier or the
manufacturer.
The manufacturer reserves the right to change the design and material of this product without notice.
2. APPLICATION
The UD-720 is a programmable digital panel display used for the measurement of standard sensor and analog
signals applied in automation. It is ideally suited for use with our range of instrumentation such as pressure
transmitters, temperature probes and TDS controllers.
3. TRANSPORT AND STORAGE
- Handling of materials should be made with adequate equipments.
- The equipments should be protected from impacts and forces during transportation and storage.
- The equipment should be stored in a dry environment.
- The manufacturer does not assume the responsibility of damaged equipments due to inappropriate handling
during the transportation and storage.
4. DELIVERED SET
- When unpacking the equipment, please check whether the type and version code on the data sticker
corresponds to the ordered one.
The delivered set is composed of:
1. UD-720 universal display...............................................................................................................
2. Plug with 16 screw terminals.........................................................................................................
3. Screw clamp to fix the device in the panel....................................................................................
4. Rubber seal...................................................................................................................................
5. User’s manual................................................................................................................................
1 piece
2 pieces
4 pieces
1 piece
1 piece

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4IMI UD720 E 06.17
5. BASIC REQUIREMENTS AND OPERATIONAL SAFETY
In the safety service scope, the display meets the requirements of the EN 61010-1 standard.
- All operations concerning transportation, installation, and commissioning as well as maintenance, must be
carried out by qualified, skilled personnel, and national regulations for the prevention of accidents must be
observed.
- Before switching the device on, one must check the correctness of all the connections to the network.
- Do not connect the device to the network through an autotransformer.
- The removal of the devices casing during the guarantee contract period may cause its avoidance.
- The equipment fulfils all requirements related to electromagnetic compatibility in the industrial environment.
- When connecting the supply, one must remember that a switch or a circuit-breaker should be installed in the
room. This switch should be located near the equipment, with easy accessibility for the operator, and suitably
marked as an element able of switching the devices’ power off.
- Non-authorized removal of the casing, inappropriate use, incorrect installation or operation, create the risk of
injury to personnel or damage to the device.
6. INSTALLATION
6.1. DEVICE INSTALLATION
Insert the display in the panel and fix it with the four screw clamps according to Figure 1. The panel cut-out should
have 92 x 45 mm.
The overall dimensions of the UD-720 digital display are presented on Figure 2 (in millimeters).
Figure 1: Display fixation in the panel.
Figure 2: Display dimensions.

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5IMI UD720 E 06.17
6.2. ELECTRICAL CONNECTIONS
The display has two separable terminal strips with screw terminals. The strips enable the connection of wires with a
cross-section of 1.5 mm2for input signals and 2.5 mm2for other signals.
6.3. INSTALLATION RECOMMENDATIONS
In order to obtain a full protection against electromagnetic noise, it is recommended to follow the principles below:
Do not supply energy to the device from the network in the proximity of equipments generating high pulse
noises.
Apply network filters.
Wires leading measuring signals should be twisted in pairs, and for resistance sensors in 3-wire connection,
twisted of wires of the same length, cross-section and resistance, and led in a shield as above.
All shields should be one-side earthed or connected to the protection wire, the nearest possible to the device.
Apply the general principle, that wires leading different signals should be led at the maximal distance between
them (no less than 30 cm), and the crossing of these groups of wires made at right angle (90º).
Figure 3: View of the displays’ connection strips.

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6IMI UD720 E 06.17
7. STARTING TO WORK
After turning the supply on, the display carries out the test procedure, showing the program version followed by the
measured value.
7.1. DISPLAY DESCRIPTION
7.2. BUTTON FUNCTIONS
Enter button :
Entry in programming mode, by hold down for 3 seconds.
Moving through the menu (level choice).
Entry in the mode changing the parameter value.
Acceptance of the changed parameter value.
Freezing the measurement (when holding down the button, the display of the input signal is not updated. The
measurement is still carried out).
Up arrow button :
Display of maximal value (the pressure of the button causes the display of the maximal value during 3
seconds).
Entry in the level of parameter group.
Moving through the chosen level.
Change of the chosen parameter value (increasing the value).
Change of digit button :
Display of minimal value (the pressure of the button causes the display of the minimal value during 3 seconds).
Entry in the level of parameter group.
Moving through the chosen level.
Change of the chosen parameter value (shift to the next digit).
Alarm indexes
Measured value
Averaging
period has not
elapsed
Return button
Change of digit
button
Up arrow
button
Enter button
Figure 4: Device front face panel.

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7IMI UD720 E 06.17
Return button :
Entry in the menu monitoring the meter parameters (by holding down the button for 3 seconds).
Exit from the menu monitoring meter parameters.
Escape from the parameter change.
Exit from the programming mode (by holding down the button for 3 seconds).
The pressure of the button combination, for 3 seconds, causes the reset of alarm signaling. This
operation acts only when the support function is switched on.
The pressure of the button combination causes the erasing of the minimal value.
The pressure of the button combination causes the erasing of the maximal value.
The pressure of the button for 3 seconds causes the entry in the programming matrix. The programming
matrix can be protected by the safety code.
The pressure of the button during 3 seconds causes the entry in the menu for monitoring the device
parameters. Move through the monitoring menu by pressing or buttons. In this menu, all the devices’
programmable parameters are only available for readout. In this mode, the menu Ser is not available. To exit from
this menu press the button. In the monitoring menu, parameter symbols are displayed alternately with their
values.
8. SERVICE
Figure 5 displays a diagram with the menu of the device in normal working mode.
Figure 5: Menu of the display in normal working mode.

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8IMI UD720 E 06.17
8.1. PROGRAMMING
By pressing and holding down the button during 3 seconds one can enter the programming matrix. The
programming matrix can be protected by an access code. If the entry is protected by a password, then the safety
code symbol SEC is displayed alternately with the set value 0. The insertion of the correct code causes the entry in
the matrix, and the insertion of an incorrect code causes the display of the ErCod symbol.
Figure 6 presents the transition matrix in the programming mode. The choice of the level is made by means of the
button, however the entry and cycling through the parameters of the current level is carried out by means of
the and button. Parameter symbols are displayed alternately with their current values. In order to
change the value of the current parameter, use the button. To escape from the change, use the button.
In order to exit from the chosen level, chose the ----- symbol and press the button. To exit from the
programming matrix, press the button during 1 second. Then, the symbol End appears for 3 seconds and the
meter transits to displaying the measured value. If the device is left in programming mode it will return to the normal
working mode automatically 30 seconds after the last pressure of any button.
In order to increase the values of the selected parameter press the button. A single pressure of the button
causes the increase of the value by 1. The To change to the following digit press . In order to accept the set
parameter, hold down the button.

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9IMI UD720 E 06.17
8.2. PROGRAMMING MATRIX
Figure 6: Programming matrix

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8.3. CHANGING FLOATING-POINT VALUES
The change is carried out in two stages (the transition to the next stage follows after pressing ):
1) Setting the value from the range -19999M...99999, similarly as for integral values.
2) Setting the decimal point position (00000., 0000.0, 000.00, 00.000, 0.0000). shifts the decimal point to the
left and shifts the decimal point to the right.
The pressure of the button during the change of the parameter value will cause the cancelation of the
process.
8.4. PARAMETER DESCRIPTION
The list of the menu configuration parameters is presented in Table 1.
Table 1: List of configuration parameters.

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11 IMI UD720 E 06.17

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12 IMI UD720 E 06.17

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13 IMI UD720 E 06.17

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- The accessibility of parameters depends on the device version and its current settings.
8.5. INDIVIDUAL CHARACTERISTIC
The UD-720 digital display is able to recalculate the measured value into any other value, thanks to the
implemented individual characteristic function. This function rescales the input signal measured according to the set
characteristic.
The user can introduce a maximum of twenty functions through giving intervals and expected values for successive
points.
The programming of the individual characteristic consists on the definition of the number of points which the input
function will be linearized upon. Remember that the number of linearization functions is of one number smaller than
the actual number of points. Next, program successive points by giving the measured value (Hn) and the expected
value corresponding to it –value which has to be displayed (Yn). A graphical interpretation of the individual
characteristic function is presented in Figure 8.
Figure 7: Individual characteristic.

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17 IMI UD720 E 06.17
During the function approximation, remember that for the approximation of functions strongly differing from the
linear characteristic the higher the number of linearizing segments, the smaller the error related to the linearization
will be.
If measured values are smaller than H1, recalculations will be made based on the first straight line calculated on the
base of points (H1,Y1) and (H2,Y2). However, for values higher than Hn (where n is the last declared measured
value) the value to display will be calculated based on the last assigned linear function.
Note: All introduced points of the measured value (Hn) must be arranged in an increasing sequence in order to
preserve the following relationship: H1 < H2 < H3 < ... < Hn
If the above relationship is not fulfilled, the individual characteristic function will be automatically switched off (will
not be realized) and a diagnostic flag will be set in the status register.
Figure 8: Individual characteristic graphical interpretation.

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8.6. ALARMS
The device contains 2 alarm outputs with NOC contact (SPST) and two alarm outputs with NOC/NCC contact
(SPDT) (option). Each of this alarm outputs can work in one of six different modes. Figure 10 shows how four of
those alarms work (n-on, n-off, on, off). The two other remaining alarm modes (h-on, h-off) are always switched on
and off respectively. These two last modes are destined to be used for manual simulation/test of alarm states.
- If for any reason the programmer defines PrL > PrH, the respective alarm will be switched off.
- In case of a measuring range overflow, the reaction of the relays is compatible with the written PrL, PrH, tYP
parameters. In spite of the displayed overflow, the device will still carry out measurements.
Figure 10: Types of alarms.

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8.7. DISPLAY FORMAT
The device adapts the display format (precision) to the value of measured quantity automatically. In order to use this
function fully, please choose the format 0.0000, and then the meter will display the measured value with the highest
accuracy possible.
This function does not operate over the time display. Here the format is set automatically. The current time (mode
HOUr) is displayed in a 24 hour format (in the shape hh.mm where hh is the current hour, and mm are the current
minutes).
- Remember that the highest resolution is not always desired since it can result in a deterioration of the indication
stability.
8.8. MANUFACTURER’S PARAMETERS
Table 2 shows the default factory parameter values of the device. These settings can be restored, by choosing the
option Set in the menu Ser.
Table 2: Factory parameter values.

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