ITALCOPPIE SENSORI DISPLAY L.P. User manual

IMB223 Rev.1.00 Oct. ‘21
DISPLAY L.P.
Digital process display 4 - 20 mA
User manual

IMB223 Rev.1.00 Oct. ‘21
Contents
Safety guidelines .......................................................................................................................................... 3
2 Intended use .................................................................................................................................................. 4
3 Specifications ............................................................................................................................................... 5
4 Functional description ................................................................................................................................. 6
5 Installation and operation ............................................................................................................................ 7
5.1 Installation ................................................................................................................................................ 7
5.2 Operating mode ....................................................................................................................................... 7
5.3 Programming mode ................................................................................................................................. 9
6 Maintenance ................................................................................................................................................ 2
7 Transportation and storage ....................................................................................................................... 3
8 Package content ......................................................................................................................................... 4
Annex A. Dimensions .................................................................................................................................... 5
Annex B. Electrical connection .................................................................................................................... 6

IMB223 Rev.1.00 Oct. ‘21
Safety guidelines
Safety guidelines
Please read through the operating manual carefully before commissioning the de ice. Damages that arise
from non-obser ance of the guidelines in the operating manual shall be de oid of any liability.
– The de ice may only be used in the manner described in this operating manual.
– No technical modifications may be made to the de ice.
– The de ice may not be used if the en ironmental conditions (temperature, humidity etc.) are not within the
limits indicated in the specification.
– The de ice may not be used in explosi e areas and there may be no chemically acti e substances in the
air.
– The de ice should only be cleaned with a damp cloth. No abrasi es or sol ent-based cleaners should be
used.
Non-obser ance of the safety guidelines may result in damage to the de ice and injury to users.

IMB223 Rev.1.00 Oct. ‘21
Intended use
2 Intended use
The DISPLAY L.P. is a uni ersally applicable, digital display unit. It is designed to be connected to any
transmitter with a 4 - 20 mA output. The de ice requires no auxiliary power and is supplied directly from the
measured current.
The field of application of the de ice includes the control and monitoring of industrial processes. The display
can be used in automated systems as a primary or secondary display.
The de ice may only be operated
- properly installed and
- in accordance with the specification.
Improper use
- The DISPLAY L.P. may not be used for medical de ices that sustain, monitor or otherwise affect human life
or
health.
- The de ice may not be used in potentially explosi e en ironment.
- The de ice may not be used in an atmosphere with chemically acti e substances.

IMB223 Rev.1.00 Oct. ‘21
Specifications
3 Specifications
Table 1
Supply current from current loop
Input signal 4 - 20 mA (2-wire)
Inputs 1
Measuring range 3.8 - 22.5 mA
Normal operation 3.2 - 25 mA
Voltage drop ≤ 7 V at 20 mA
Dynamic input resistance ≤ 200 Ohm
Accuracy 0.2% + 1 digit
Display LED, 7-segment display
Character height 14 mm
Display colour red or green
Number of digits in display 4
Sampling rate (without damping) 1 reading / s
IP Code front IP65, rear IP20
Dimensions 48 x 26 x 65 mm
Weight 30 g approx.
Protection class III
Operating temperature -30 to +70 °C
Storage temperature -40 to +80 °C
Humidity up to 80% (non-condensing)

IMB223 Rev.1.00 Oct. ‘21
Functional description
4 Functional description
A 4-digit, 7-segment LED display with 14 mm character height is located on the front of the de ice for dis-
playing the measured alues, error messages, functions and alues during programming. The programming
buttons are positioned on the cylindrical surface of the de ice.
The button is used to set the programming mode and to apply the changes. The parameters can be se-
lected and changed using buttons and . Pressing and holding the buttons increases the speed of pa-
rameter changing in three steps.
The operating modes are described in Section 5.
The de ice has the following functions:
- Display physical parameters, recei ed from process control de ices with 4 - 20 mA output signals (current
loop).
- The measured alues are displayed on the 4-digit LED display with a maximum range of -999 to +9999 in
accordance with the set limit alues and the decimal point position.
- When exceeding the measuring limit, the de ice displays an error message.
- Switching between linear and square root function (for special transmitters)
- Filter for damping the signal fluctuations with an adjustable time constant
- Password protection against unauthorised access
Fig. 1 Block diagram

IMB223 Rev.1.00 Oct. ‘21
Installation and operation
5 Installation and operation
5. Installation
The de ice is designed for switch panel mounting in a borehole of Ø22.5 mm (see Annex A for dimensional
drawings).
Carefully position the supplied gasket on the display rear surface. Insert the cylindrical part of the de ice into
the borehole and tighten the nut from the rear side of the switch panel. Connect the de ice to the signal ca-
ble in accordance with Annex B.
The de ice factory settings can be changed before assembly if necessary. For this purpose the display must
be connected to a standard signal 4 - 20 mA.
5.2 Operating mode
The operating mode is automatically switched on if the standard signal 4 - 20 mA is connected to the termi-
nals.
The input signal is digitalised, the square root calculated (if the function is enabled) and the signal according-
ly to the set parameters calibrated and displayed. The scale factor is calculated based on the parameter
di.Lo “lower limit” (according to input signal 4 mA) and di.Hi “upper limit” (according to input signal 20 mA).
If the input signal is lower than 3.8 mA, the error message Lo is displayed.
If the input signal is higher than 22.5 mA, the error message Hi is displayed.
Square root function
This function is intended for transmitters with square characteristic cur e. To enable the function, the param-
eter Sqrt must be set to ON.
Damping function
Undesirable signal fluctuations can be suppressed through the adjustable filter constant.
The most important feature of the exponential filters is τ d – the filter time constant (parameter td) (see Fig. 3
and Table 2).
If the constant increases, the display reacts to changes of the input signal more slowly and the susceptibility
to interference is lower.
Fig. 2 Mounting 1

IMB223 Rev.1.00 Oct. ‘21
Installation and operation
Fig. 3

IMB223 Rev.1.00 Oct. ‘21
Installation and operation
5.3 Programming mode
In programming mode the necessary parameters can be changed (see Table 2).
To return to the operating mode, the button must be pressed for longer than 5 s. If no button is pressed
within 20 s, the de ice re erts to operating mode automatically.
The flowchart is presented in Fig. 4.
Table 2
Parameter
Komments
Valid values
PS
Password protection
on
)
oFF
di.P
Decimal point position
(from the right)
–
-
–
-
–
-
–
.
–
-
–
-
–
-
–
.
–
-
–
-
–
-
–
.
–
-
–
-
–
-
–
.
di.Lo
Lower limit (with 4 mA)
-
999…4.00…9999
2)
di.Hi
Upper limit (with 20 mA)
-
999…20.00…9999
3)
td
Filter time constant in seconds
0… … 0
Sqrt
Square root function on/off
on
oFF
Comments:
1. Factory settings are highlighted.
2. With particular setting parameters the de ice cannot display the necessary minus sign due to the re-
striction to four segments. The parameters are configured as follows:
di.Lo: -999 4 mA
di.Hi: 9999 20 mA
With an input measured current of 3.8 mA the correct display should be “-1068”. Due to the restriction to
four segments, the minus sign is remo ed and the display is “1068”.
3. With particular setting parameters the de ice cannot actually display the necessary 5 figures due to the
restriction to four segments. The parameters are configured as follows:
di.Lo: -999 4 mA
di.Hi: 9999 20 mA
With an input measured current of 20.8 mA the correct display should be “10548”. Due to the restriction to
four segments, the first character is remo ed and the display is “0548”.

IMB223 Rev.1.00 Oct. ‘21
Installation and operation
Fig. 4

IMB223 Rev.1.00 Oct. ‘21
Installation and operation
To enter the programming mode use the button .
To scroll the parameters use the buttons and to change the parameter use the button .
When the de ice is switched on for the first time or the password protection is acti ated, 0 is displayed.
Use the buttons and to enter the correct password (factory setting – 5), then press the button
to confirm.
If an incorrect password is entered, the de ice re erts to operating mode.
If the password protection is disabled (the parameter PS is oFF), the password is not requested.
If the button is pressed while the parameter PS is being displayed, the following characters appear on
the display: I- - - - . This means that the upper end of the menu has been reached.
If the button is pressed while the parameter Sqrt is being displayed, the following characters appear on the
display: - - - -I. This means that the lower end of the menu has been reached.
Briefly push the button (< 1 s) to change the selected parameter. The display indicates the actual
param-eter alue. The factory settings are shown in Fig. 4 and Table 2. The alue can be changed using
buttons and . After confirming by pressing the button, you return to the parameter list.
Potential errors and troubleshooting measures are listed in Table 3.
Table 3 Error dis lay
Display
Possible cause of error
Remedy
Lo
(in operation)
Input current lower than 3.8 mA Check input signal
Hi
(in operation)
Input current higher than 22.5 mA Check input signal
None No input signal Check input signal
Re erse polarity on input Check polarity

IMB223 Rev.1.00 Oct. ‘21
Maintenance
6 Maintenance
Technical maintenance should be performed on the de ice at least e ery 6 months by maintenance person-
nel and comprising the following tasks:
– Remo ing dust, dirt and foreign matter from the housing.
– Checking mounting of de ice
– Checking connections
The de ice should be cleaned with a damp cloth only. No abrasi es or sol ent-containing cleaners may be
used.
The safety guidelines in Section 1 must be obser ed when performing maintenance.

IMB223 Rev.1.00 Oct. ‘21
Transportation and storage
7 Transportation and storage
The de ice must be transported in closed transport boxes.
Protecti e measures against shocks, ibrations and humidity must be obser ed.
There may be no chemically acti e substances in the air.
The storage temperature may lie between -40 and +80 °C.

IMB223 Rev.1.00 Oct. ‘21
Package content
8 Package content
– Digital process display 1
– Gasket 1
– Mounting nut 1
– User manual 1

IMB223 Rev.1.00 Oct. ‘21
Annex A. Dimensions
Annex A. Dimensions
Fig. A.1
To pre ent the de ice spinning, the borehole in the front panel must correspond to the dimensions in Fig.
A.2.
Fig. A.2

IMB223 Rev.1.00 Oct. ‘21
Annex B. Electrical connection
Annex B. Electrical connection
Fig. B.1
Fig. B.2

IMB223 Rev.1.00 Oct. ‘21
202 ITALCOPPIE sensori s.r.l.
All rights reser ed.
No part of this document may be reproduced or transmitted in any form, electronically or mechanically, or
any purpose, without prior authorisation in writing by ITALCOPPIE SENSORI s.r.l.
ITALCOPPIE sensori s.r.l. takes the greatest pains to ensure that the information gi en in this document are
correct. Howe er, ITALCOPPIE sensori s.r.l. products are continually being impro ed; this may result in
modifications without notification to the contents of this manual.
ITALCOPPIE sensori s.r.l. is not liable for technical and editorial errors or omissions in the material contained
herein, nor for incidental or consequential damages resulting from the supply, performance or use of this
material.
Warranty: We warrant that the products will be free from defects in material and workmanship for 1 years.
The warranty abo e shall not apply for any failure caused by the use of the product not in line with the
instructions reported on this manual.
Product return: the instruments can be returned under warranty only after Italcoppie sensori authorization.
ITALCOPPIE SENSORI s.r.l.
Via A. Tonani, 10
26030 Malagnino (Cremona) Italy
Tel. [phone]
Fax. [phone]
http:www.italcoppie.com
This product must be disposed of according to the European WEEE (Waste Electrical & Electronic
equipment)