Omega DR-I4 User guide

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User’s Guide

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DR-I4L

Isolated signal converter

with universal power supply

for Load cells and Millivolts, DIN Rail Mount

Page 2

omega.com [email protected]

Omega Engineering, Inc:

800 Connecticut Ave. Suite 5N01, Norwalk, CT 06854, USA Toll-Free: 1-800-826-6342 (USA & Canada only) Customer Service: 1-800-622-2378 (USA & Canada only) Engineering Service: 1-800-872-9436 (USA & Canada only)

Tel: (203) 359-1660 e-mail: [email protected]

Omega Engineering,

Limited:

1 Omega Drive, Northbank, Irlam Manchester M44 5BD

United Kingdom

Omega Engineering,

Daimlerstrasse 26 75392

Deckenpfronn Germany

Fax: (203) 359-7700

GmbH:

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.

Page 3

DR-I4L isolated signal converter Instruction Manual

SIGNAL CONVERTER DR-I4L

Signal converter for load cells and millivolts, isolated, industrial applications

Isolated signal converter for load cell signals and millivolts. Provides +5 Vdc excitation voltage to power the load cell, and ‘sense’ function to compensate for excitation voltage variations. Accepts direct connection of 1, 2 3 or up to 4 load cells (typical 350 Ohm load cells). Accepts 4 and 6 wire load cells. Accepts unipolar and bipolar ranges up ±80 mV.

Congurable output in 4/20 mA (active or passive) or 0/10 Vdc. Universal

USER’S MANUAL

INDEX

1. How to order . . . . . . . . . . . . . . . . . . . . . . . . .2

2. Material included . . . . . . . . . . . . . . . . . . . . . . 2

3. Additional information. . . . . . . . . . . . . . . . . . . . 2

4. Installation and start-up . . . . . . . . . . . . . . . . . . . 3

5. SOS mode . . . . . . . . . . . . . . . . . . . . . . . . . . 3

6. Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 3

7. Practical load cell information . . . . . . . . . . . . . . . . 4

7.1 Number and type of cells accepted 4

7.2 Load cell and ‘sense’ wires 4

7.3 Millivolt mode 4

7.4 Load cell with external power 4

7.5 Connecting the cell to the ground 4

7.6 Connections with a junction box 5

7.7 How to calculate the input signal range 5

7.8 Connections with 3 or 4 load cells 5

8. Predened conguration codes . . . . . . . . . . . . . . .6

9. Connections and dimensions (mm (inch)) . . . . . . . . . . 7

10. Input signals . . . . . . . . . . . . . . . . . . . . . . . . 8

10.1 Load cell signals 8

10.2 Millivolts signals 9

11. Technical specications . . . . . . . . . . . . . . . . . 10

12. How to operate the instrument . . . . . . . . . . . . . . 12

12.1 Conguration system 12

12.2 ‘Normal mode’ of operation 12

12.3 How to operate the ‘Conguration menu’ 12

12.4 How to operate the ‘Force’ menu 13

12.5 How to activate the ‘Messages’ function 13

12.6 Fast and advanced congurations 13

13. Conguration menu. . . . . . . . . . . . . . . . . . . . 14

13.1 Function codes 14

13.2 Initial conguration 14

13.3 Output range 14

13.4 Advanced scaling 15

13.5 Field correction 16

13.6 Display information 16

13.7 Key ‘UP’ (‘force’ menu) 17

13.8 Key ‘LE’ (‘messages’ function) 17

13.9 ‘Tools’ menu 18

14. Full conguration menu. . . . . . . . . . . . . . . . . . 20

15. Factory default parameters. . . . . . . . . . . . . . . . 22

16. Error codes . . . . . . . . . . . . . . . . . . . . . . . . 22

17. Precautions on installation. . . . . . . . . . . . . . . . 23

18. Warranty . . . . . . . . . . . . . . . . . . . . . . . . . 23

19. CE declaration of conformity . . . . . . . . . . . . . . . 23

power supply from 18 to 265 Vac/dc. 3 way isolation between input, output and power circuits. Circuit isolation prevents ground loops and transient propagation, protecting remote equipment and signal integrity.

Predened conguration codes available for fast and easy conguration. Advanced conguration menu available to customize input and output signal ranges to specic values required. ‘Tare’ function accessible from front keypad. Conguration through front push-button keypad. Front display available for conguration and system information (tare value, input signal value, output signal value, congured label, signal percentage, process

value, excitation voltage and excitation current values). Built-in ‘force’ functions to manually generate low and high output signals,

to validate remote instrumentation during installation. ‘SOS’ mode to help

on critical maintenance and repairs. Congurable power frequency rejection lter. ‘Password’ function to block non-authorized access to ‘conguration

menu’. Designed for industrial use, with potential integration into a wide range of

applications, reduced cost, excellent quality and available customization.

When the marks ‘Attention’ or ‘Risk of electrical shock’ appear, read the documentation for information about the nature of the risk.

1. How to order

Reference Description

DR-I4L Signal converter for load cells

2. Material included

The instrument is provided with the following elements:

• 1 x instrument DR-I4L

• 4 x plug-in screw terminals

• 1 x quick installation guide

3. Additional information

To view the DR-I4L spec sheet and manuals visit us at http://www.omega.com/...

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DR-I4L isolated signal converter Instruction Manual

4. Installation and start-up

If this is the rst time you are conguring the instrument, below are the steps to follow during a rst installation. Read all the

manual sections in order to have a full and clear view of the characteristics of the instrument. Do not forget to read the installation precautions at section 17.

1. Install the instrument at the DIN rail

2. Read how to operate the instrument (see section 12)

3. Read the ‘practical load cell information’ (see section 7)

4. Connect the input, the output and the power terminals (see section 9).

• error messages may appear in the process of connection (see section 16), for example, if ‘sense’ is not yet connected, or there is

no current owing to the cell, because the cell is still not connected.

5. Congure the input and output signals

• choose a predened conguration code (see section 8)

• introduce the code at the instrument (see section 13.1)

6. If

needed, customize the input and output signal ranges (see section 13.4)

• if needed, correct the slope of the load cell using the ‘eld correction’ functions (see section 13.5) or manually operating the ‘input signal low’ and ‘input signal high’ parameters (see section 13.4)

• if needed, apply a ‘tare’ to the system (see section 13.4)

7. If needed, congure the display reading (see section 13.6), the key ‘UP’ (5) ‘force’ menu (see section 13.7), and the key ‘LE’ (3) ‘messages’ function (see section 13.8)

8. If needed, block access to the ‘conguration menu’ (see section 13.9)

5. SOS mode

The instrument includes a congurable ‘SOS mode’ function that provides a way to manually congure a xed output signal. This output signal remains xed, independent of the input signal value or sensor state.

This function allows to perform urgent maintenance or repair tasks at the input section of the system, for example replacing damaged sensors, while the instrument still provides a controlled signal that allows the process to continue its activity, under human surveillance. When the maintenance or repair task has been performed, the instrument can be taken back to the standard working mode, where the output signal is proportional to the input.

When manually activated, the ‘SOS mode’ generates the output signal

congured, and the front display remains ashing with the message

‘SoS’. All other systems are disabled, which means that :

• no error messages will be shown on display

• no key ‘UP’ (5) ‘fast access’ menu is accessible

• no key ‘LE’ (3) ‘messages’ function is accessible

• no ‘Eco’ mode activates

Only key ‘SQ’ (<) is accessible, to access the ‘conguration menu’ (eventually this access can be password locked) in order to deactivate the ‘SOS mode’. Deactivation of ‘SOS mode’ must be performed manually

by conguring the function to ‘oFF’. To congure the ‘SOS mode’ function, see section 13.9.

6. Messages

The instrument includes a congurable ‘messages’ function that provides advanced information about the system, available to the operator with a single click at the front key ‘LE’ (3).

This information is helpful during start-up, installation, system

verication, routine maintenance and troubleshooting, as messages and

values provide information on the actual input and output signal value, actual percentage of the input signal compared to the full scale, scaled process values and excitation voltage and excitation current provided to the load cell.

This information is available at any time, and is displayed sequentially when requested (except while on ‘SOS mode’). Access to this information reduces maintenance time, improves time invested in failure location, and helps for an easy resolution of the problem.

Additionally, each instrument can be assigned a custom label code of up to 8 characters (see 4), that can be displayed at the front display or at the

messages sequence, making system identication of each instrument

an easy task. To congure the ‘messages’ function, see section 13.8.

Table 1 | Available label codes

Letters Numbers

A b o 1 _ c P 2 . d q 3 º E r 4 (blank) F S 5 G t 6 h u 7

I V 8 J W 9 K X L Y

M Z

Labeling examples: an application measures weight from ve different load cells, at the four corners of a platform and the center. All signals are converted to 4/20 mA for retransmission to PLC or SCADA. Each DR-I4L can be congured the following label for easy identication :

• Label for instrument 1: cornEr1

• Label for instrument 2: cornEr2

• Label for instrument 3: cornEr3

• Label for instrument 4: cornEr4

• Label for instrument 5: cEntEr

n 0

Special

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DR-I4L isolated signal converter Instruction Manual

7. Practical load cell information

7.1 Number and type of cells accepted

The instrument accepts up to 4 standard 350 Ohms load cells. The instrument provides 5 Vdc excitation voltage. For load cells with different

impedance, calculate the current consumption for each cell, and the total must not exceed the maximum current the instrument can provide (see section 11).

In case of problems with the signal provided by the load cell, the

instrument provides information for troubleshooting purposes. Congure

the ‘messages’ function (see section 13.8) to access the actual values for the input signal (expressed in mV), the excitation voltage measured at the ‘sense’ terminals (expressed in Vdc) and the current provided to the cell (expressed in mA). The operator can use these values to identify the cause of the problem. See section 6 for more information on how to access these values in real time.

7.2 Load cell and ‘sense’ wires

The instrument is designed to measure load cell signals. The instrument

provides 5 Vdc excitation voltage to power the load cell, and reads the

millivolt signal generated by the load cell. The instrument also reads the actual excitation voltage connected to the load cell, and compensates the read signal for changes at the excitation voltage.

The actual value of the excitation voltage is detected by using the ‘sense’ wires. Connect the ‘sense +’ and ‘sense -’ (terminals 5 and 2) to the load cell, to provide the instrument with an accurate value of the excitation voltage received by the cell. Deviations and errors from the

standard excitation value (5 Vdc) are automatically compensated by the

instrument, increasing the accuracy and reliability of the measure. If you can not connect the ‘sense’ wires to the load cell, place a

shortcircuit between terminals ‘sense +’ and ‘Vexc +’ (terminals 5 and 4), and between terminals ‘sense -’ and ‘Vexc -’ (terminals 2 and 1).

For applications with multiple load cells (2, 3 or 4 cells) connect the ‘sense ’ wires to the ‘electrical middle point’ of the power wires of all the cells (see section 7.8).

7.3 Millivolt mode

The instrument can be congured to measure millivolts in differential

mode. Activating any millivolt measurement mode, disables de excitation voltage and disables the ‘sense’ compensation for changes at the excitation voltage. The instrument works as a pure differential millivolt signal converter.

Table 3 | Millivolt mode connection

123 456DR-I4L terminals

mV - mV +

7.4 Load cell with external power

The instrument can be congured to read signals from load cells which are externally powered up to 10 Vdc, and not use the power provided by

the instrument. Congure the instrument to read in ‘load cell’ mode and set the excitation

voltage parameter to ‘off’. Connect the ‘sense’ wires to the excitation voltage terminals of the load cell. With the ‘sense’ wires, the instrument will compensate for variations of the power supply.

With this conguration, values indicated in mV’ units (see section 10.1), are scaled to a theoretical power value of 5 Vdc, therefor values may not

be directly interpretable.

Table 4 | Load cell connection with external power

Table 2 | Typical load cell connection

123 456

signal - signal +

sense -

Vexc -

The ‘sense’ terminals must be always connected. If you do not use the ‘sense’ wires, shortcircuit with ‘Vexc’ terminals

DR-I4L

terminals

Vexc +

sense +

123 456

signal - signal +

DR-I4L

terminals

Vexc +

sense -

sense +

Vexc -

7.5 Connecting the cell to the ground

Measuring with load cells requires an electrically clean installation. When connecting the ground to the cell system, assure that the load cell connection to ground is performed in such a way that the current to

ground does not ow through the cell.

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DR-I4L isolated signal converter Instruction Manual

7. Practical information (cont.)

7.6 Connections with a junction box

A ‘junction box’ is a connections box where several load cells can be connected. The ‘junction box’ then offers a single set of output terminals, that will be connected to the instrument.

The ‘junction box’ provides 4 or 6 terminals, like a normal load cell: two terminals for millivolt signal, two terminals for excitation voltage, and eventually two additional terminals for ‘sense’ wires. If ‘sense’ terminals are not present, you can connect the ‘sense’ wires to the excitation voltage terminals of the ‘junction box’ or directly to the ‘electrical middle point’ of the power wires of the load cells. Last option is to short circuit the ‘sense’ terminals to the excitation voltage terminals as indicated at section 7.2.

If the ‘junction box’ provides an output signal that is the addition of

each of the millivolt load cell signals, congure the instrument for the

appropriate input signal range.

Example : four load cell signals of 2 mV/V, powered at 5 Vdc, each load cell provides a maximum of 10 mV signal. The output of the ‘junction box‘ will be 40 mV maximum, so select the 0/40 mV input signal range.

If the ‘junction box’ provides the mean value of the four load cell signals,

then the input signal range must be selected to 0/10 mV.

Table 5 | Connections with a junction box

7.8 Connections with 3 or 4 load cells

Using 3 load cells is the optimal way to distribute the weight on a plane, although it is common to work with 4 load cells in applications with tanks, hoppers and similar.

When working with multiple load cells, the optimal connection is the one that makes the wires of the load cell converge in the same central area, so that all the cells are at the same ‘electrical distance’ from the instrument.

Use the same type load cell and connect the wires to the central area as

indicated below. Congure the instrument as indicated in this manual,

assuming that :

•

the nominal weight of the system is the addition of the nominal

weight of each cell (3 x 100 Kg = 300 Kg for 3 cells, or 4 x 100 Kg = 400 Kg

for 4 cells)

•

the ‘sense’ wires are carried to the central area together with the Vexc wires, but are not propagated to each individual cell. If you do not want to use the ‘sense’ wires, see section 7.2.

Table 6 | Direct connection to 3 load cells

DR-I4L terminals

123 456

signal - Vexc +

sense -

Vexc -

DR-I4L

terminals

sense +

signal +

Junction box

(connections box)

7.7 How to calculate the input signal range

The input signal range selected at the instrument must be able to accept the whole range of signal that the load cell can provide. This value is obtained by multiplying the sensitivity of the load cell

(expressed in mV/V) with the excitation voltage value, which is 5 Vdc

for this instrument.

• Load cell sensitivity = 2 mV/V

• Excitation voltage = 5 Vdc

• Maximum signal = 2 mV/V x 5 Vdc = 10 mV

• Select ‘Input signal range’ = 0/10 mV

• Code 011 for 4/20 mA output or code 110 for 0/10 Vdc output

Signal+

Sense+

Vexc+

Signal-

Sense-

Vexc-

Table 7 | Direct connection to 4 load cells

DR-I4L terminals

123 456

Signal+

Sense+

Vexc+

Signal-

Sense-

Vexc-

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DR-I4L isolated signal converter Instruction Manual

8. Predened conguration codes

Select the desired code for your application, and check the following sections for more information:

• for information on how to activate a code, see section 13.1

• to customize the input and output signals, see section 13.4

The instrument accepts up to 4 standard 350 Ohms load cells. The instrument provides 5 Vdc excitation voltage. Calculate the maximum

output signal generated by your load cell, and select the ‘Predened conguration code’ accordingly (see Table 8).

To calculate the optimal input signal range for your load cell, see section 7.7.

Table 8 | Predened conguration codes for load cells - Input / Output

Input signal

range

0/5 mVdc

0/10 mVdc 011 111

Type of signal Output 4/20 mA

Code

load cell

010 110

signal

Output 0/10 Vdc

Code

See section

...

0/15 mVdc 012 112

0/20 mVdc 013 113

0/25 mVdc 014 114

0/30 mVdc 015 115

0/40 mVdc 016 116

0/50 mVdc 017 117

0/60 mVdc 018 118

0/70 mVdc 019 119

10.1

0/80 mVdc 020 120

±5 mVdc 021 121

±10 mVdc 022 122

±20 mVdc 023 123

±30 mVdc 024 124

±40 mVdc 025 125

±50 mVdc 026 126

±60 mVdc 027 127

±70 mVdc 028 128

±80 mVdc 029 129

Reserved 030 to 049 130 to 149

The instrument can be congured to measure millivolt in differential

mode. Activating the millivolt mode disables de excitation voltage and disables the ‘sense’ compensation for changes at the excitation voltage. The instrument works as a pure differential millivolt signal converter. Select the ‘Predened conguration code’ according to your maximum

millivolt signal (see Table 9).

Table 9 | Predened conguration codes for millivolt signals - Input / Output

Input signal

range

0/5 mVdc

0/10 mVdc 051 151

Type of signal Output 4/20 mA

Code

millivolt

050 150

signal

Output 0/10 Vdc

Code

See section

...

0/15 mVdc 052 152

0/20 mVdc 053 153

0/25 mVdc 054 154

0/30 mVdc 055 155

0/40 mVdc 056 156

0/50 mVdc 057 157

0/60 mVdc 058 158

0/70 mVdc 059 159

0/80 mVdc 060 160

10.2

±5 mVdc 061 161

±10 mVdc 062 162

±20 mVdc 063 163

±30 mVdc 064 164

±40 mVdc 065 165

±50 mVdc 066 166

±60 mVdc 067 167

±70 mVdc 068 168

±80 mVdc 069 169

Reserved 070 to 099 170 to 199

(End of list) ‘----’ (see notes below)

(Custom selection)

‘uSEr’ (see notes below)

Notes

• Code ‘uSEr’ indicates that a user custom conguration is active, and it does not match any of the listed codes This code is non-selectable, for information only.

Example: select code ‘013’ for 0/20 mVdc=4/20 mA, the instrument reads code ‘013’. Later, congure the input to 0/17 mVdc=4/20 mA, this does not match a listed code, and the instrument reads ‘uSEr’. Or change the output to 0/20 mVdc=1/5 Vdc, this does not match a listed code, and the instrument reads ‘uSEr’.

• Code ‘----’ identies the end of the list, it follows code ‘199’ and the list continues with code ‘010’. Select ‘----’ to exit the list without applying changes.

Page 8

DR-I4L isolated signal converter Instruction Manual

9. Connections and dimensions (mm (inch))

108 mm

(4.25’’)

Standard (35 mm) DIN

rail mount

A B C

1 2 3

~ +

~ -

106 mm

(4.17’’)

signal sense Vexc -

fuse

POWER (ABC) 18 to 265 Vac/dc isolated

OUTPUT SIGNAL (789) see ‘Table 11’

INPUT SIGNAL (123 456)

see

‘Table 10’

22.5 mm (0.89’’)

7 8 9

DR-I4

4 5 6

common (0 Vdc or passive mA current out)

signal 4/20 mA (mA current in)

signal 0/10 Vdc (or active mA current out)

Fuse - This instrument does not include internal protection fuse. According to security regulation

EN 61010-1, add a protection fuse to

the power line to act as a disconnection element, easily accessible to the operator

and identied as a protection device. Use

time-lag fuse, with value :

• 250 mA for voltages > 50 Vac/dc

• 400 mA for voltages < 50 Vac/dc

signal + sense + Vexc +

Table 10 | INPUT signal connections

INPUT

signal

load cell Vexc - sense - signal - Vexc + sense + signal +

millivolts mV - mV +

1 2 3 4 5 6

Input terminals Section

...

10.1

10.2

Table 11 | OUTPUT signal connections

OUTPUT signal

4/20 mA active output

4/20 mA passive output

(*external loop power needed)

Output terminals Connections

7 8 9

mA-

(in)

mA+ (out)

mA-

(in)

mAmA+

mA+ (out)

789

mA+ mA-

789

common

0/10 Vdc

common

+Vdc

789

Page 9

DR-I4L isolated signal converter Instruction Manual

10. Input signals

10.1 Load cell signals

MEASURING LOAD CELL SIGNALS

The instrument can be congured to measure load cell

Load cell

signals, with pre-congured ranges from 0/5 mV up to 0/80 mV. The instrument provides excitation voltage of

+5 Vdc to power the load cell, with a maximum of 70 mA (this is 4 standard load cells of 350 Ohms). Bipolar ranges from ±5 mV up to ±80 mV can also be congured.

‘SENSE’ FUNCTION

The instrument reads the actual excitation voltage received by the load cell, and compensates the signal read for any variations of the excitation voltage. The applied voltage is read through the ‘sense’ wires and the ‘sense’ wires must be connected to the load cell. If it is not possible to connect the ‘sense’ wires to the load cell, apply a shortcircuit between terminals ‘sense +’ and ‘Vexc +’ (terminals 5 and 4), and between terminals ‘sense -’ and ‘Vexc -’ (terminals 2 and 1). (see section 7.2).

PREDEFINED CONFIGURATION CODES

See ‘Table 13’ for a list of predened input-output conguration codes.

To activate a code see section 13.1.

CUSTOMIZED SIGNAL RANGES

To customize the input and / or output signal ranges, access the

‘Advanced scaling’ menu (see section 13.4).

MAXIMUM OVERSIGNAL AND PROTECTIONS

‘Maximum oversignal’ is the maximum signal accepted by the instrument. Higher signal values may damage the instrument. Lower signal values

are non destructive but may be out of accuracy specications. Do not

connect active signals to the excitation voltage terminals.

OUTPUT SIGNAL

The output signal is congurable to 4/20 mA (active and passive) and 0/10 Vdc.

Table 13 | Input signal ranges for load cell signals

Input

range

0/5 mV

0/10 mV 011 111 <0.13 % ±12 Vdc 20 MOhm

0/15 mV 012 112 <0.13 % ±12 Vdc 20 MOhm

0/20 mV 013 113 <0.10 % ±12 Vdc 20 MOhm

0/25 mV 014 114 <0.10 % ±12 Vdc 20 MOhm

0/30 mV 015 115 <0.10 % ±12 Vdc 20 MOhm

0/40 mV 016 116 <0.10 % ±12 Vdc 20 MOhm

0/50 mV 017 117 <0.08 % ±12 Vdc 20 MOhm

0/60 mV 018 118 <0.08 % ±12 Vdc 20 MOhm

0/70 mV 019 119 <0.08 % ±12 Vdc 20 MOhm

0/80 mV 020 120 <0.08 % ±12 Vdc 20 MOhm

±5 mV 021 121 <0.15 % ±12 Vdc 20 MOhm

±10 mV 022 122 <0.10 % ±12 Vdc 20 MOhm

±20 mV 023 123 <0.10 % ±12 Vdc 20 MOhm

±30 mV 024 124 <0.10 % ±12 Vdc 20 MOhm

±40 mV 025 125 <0.08 % ±12 Vdc 20 MOhm

±50 mV 026 126 <0.08 % ±12 Vdc 20 MOhm

±60 mV 027 127 <0.08 % ±12 Vdc 20 MOhm

Code for

4/20 mA output

010 110 <0.18 % ±12 Vdc 20 MOhm

Code for

0/10 Vdc output

Accuracy

(% FS)

Max.

oversignal

Zin

Table 12 | Connection example for load cell signals

123

mV sense Vexc -

456

mV + sense + Vexc +

±70 mV 028 128 <0.08 % ±12 Vdc 20 MOhm

±80 mV

029 129 <0.08 % ±12 Vdc 20 MOhm

CORRECTED MILLIVOLT SIGNAL

Throughout this document, the ‘Input signal low’ (In.Lo), ‘Input signal high’ (In.hI) and ‘Tare’ (tArE) parameters and the ‘Input signal value’ (InP.S), are expressed in ‘corrected millivolt’ units, and are indicated with a ( ’ ) symbol. The millivolt values of these parameters may not be the same as the millivolt values directly measured at the input signal terminals. The parameter values are corrected to a theoretical excitation voltage scale of ‘5 Vdc’. The instrument reads the real value of the excitation voltage at the load cell, and compensates for any variations away from the ‘5 Vdc’ theoretical value.

For troubleshooting purposes, the ‘Measure’ function displays the real millivolt signal at terminals (see section 13.5). This value can be compared with the value provided by a handheld millivolt meter connected at the input terminals.

Page 10

DR-I4L isolated signal converter Instruction Manual

10. Input signals (cont.)

10.2 Millivolts signals

MEASURING MILLIVOLT SIGNALS

The instrument can be congured to measure millivolt

signals from any source, with pre-congured ranges from 0/5 mV up to 80 mV. See connections at ‘Table 14’. Bipolar

ranges from ±5 mV up to ±80 mV can also be congured.

Table 15 | Input signal ranges for millivolt signals

Input

range

0/5 mV

Code for

4/20 mA output

050 150 <0.15 % ±12 Vdc 10 MOhm

Code for

0/10 Vdc output

Accuracy

(% FS)

Max.

oversignal

Zin

PREDEFINED CONFIGURATION CODES

See ‘Table 15’ for a list of predened input-output conguration codes.

To activate a code see section 13.1.

CUSTOMIZED SIGNAL RANGES

To customize the input and / or output signal ranges, access the

‘Advanced scaling’ menu (see section 13.4).

MAXIMUM OVERSIGNAL AND PROTECTIONS

‘Maximum oversignal’ is the maximum signal accepted by the instrument. Higher signal values may damage the instrument. Lower signal values

are non destructive but may be out of accuracy specications.

OUTPUT SIGNAL

The output signal is congurable to 4/20 mA (active and passive) and 0/10 Vdc.

0/10 mV 051 151 <0.10 % ±12 Vdc 10 MOhm

0/15 mV 052 152 <0.10 % ±12 Vdc 10 MOhm

0/20 mV 053 153 <0.07 % ±12 Vdc 10 MOhm

0/25 mV 054 154 <0.07 % ±12 Vdc 10 MOhm

0/30 mV 055 155 <0.07 % ±12 Vdc 10 MOhm

0/40 mV 056 156 <0.05 % ±12 Vdc 10 MOhm

0/50 mV 057 157 <0.05 % ±12 Vdc 10 MOhm

0/60 mV 058 158 <0.05 % ±12 Vdc 10 MOhm

0/70 mV 059 159 <0.05 % ±12 Vdc 10 MOhm

0/80 mV 060 160 <0.05 % ±12 Vdc 10 MOhm

±5 mV 061 161 <0.12 % ±12 Vdc 10 MOhm

±10 mV 062 162 <0.07 % ±12 Vdc 10 MOhm

±20 mV 063 163 <0.07 % ±12 Vdc 10 MOhm

±30 mV 064 164 <0.07 % ±12 Vdc 10 MOhm

±40 mV 065 165 <0.05 % ±12 Vdc 10 MOhm

Table 14 | Connection examples for millivolt signals

123

456

mV -

not connected not connected

mV +

not connected not connected

±50 mV 066 166 <0.05 % ±12 Vdc 10 MOhm

±60 mV 067 167 <0.05 % ±12 Vdc 10 MOhm

±70 mV 068 168 <0.05 % ±12 Vdc 10 MOhm

±80 mV

069 169 <0.05 % ±12 Vdc 10 MOhm

Page 11

DR-I4L isolated signal converter Instruction Manual

11. Technical specications

INPUT SIGNAL RANGES FOR LOAD CELLS

signal ranges from 0/5 mV up to 0/80 mV (see section 10.1) bipolar signal ranges from ±5 mV up to ±80 mV (see section 13.4) excitation voltage +5 Vdc excitation voltage variations automatic compensation (see section 7.2) excitation current max. 70 mA

INPUT SIGNAL RANGES FOR MILLIVOLTS

signal ranges from 0/5 mV up to 0/80 mV (see section 10.2) bipolar signal ranges from ±5 mV up to ±80 mV (see section 13.4) excitation voltage no input impedance 10 MOhm typical (with 1 MOhms during

150 milliseconds,

ACCURACY AT 25 ºC see for each type of signal at section 10

accuracy values are indicated for 4/20 mA

every 10 seconds approx.)

output. For 0/10 Vdc output, add +0.05 % to indicated accuracy values

THERMAL DRIFT

150 ppm/ºC (F.S.) for ranges up to 5 mV

100 ppm/ºC (F.S.) for ranges up to 20 mV

75 ppm/ºC (F.S.) for ranges up to 80 mV

STEP RESPONSE

Response time according to the congured parameter ‘power lter’ (see section

13.9). Typical response times to reach 99% of the output signal, in response to a 100% step at the input.

0 to 99% 0 to 99% 0 to 99%

) ) )

with ‘no lter’ <115 mSec. typ. (

‘50 Hz lter’ or ‘60 Hz lter’

with

<150 mSec. typ. (

with ‘50 and 60 Hz lter’ <300 mSec. typ. (

OUTPUT SIGNAL RANGES

active current output 4/20 mA active

max. <22 mA, min. 0 mA maximum load <400 Ohm

passive current output 4/20 mA passive

max. 30 Vdc on terminals

voltage output 0/10 Vdc,

max. <11 Vdc, min. -0.05 Vdc (typ.) minimum load > 10 KOhm

CONFIGURATION SYSTEM

key pad + display accessible at the front of the instrument conguration ‘conguration menu’ and ‘predened codes’ scalable units scalable input ranges

scalable output ranges scalable process display

POWER SUPPLY

voltage range 18 to 265 Vac/dc isolated

(20 to 240 Vac/dc ±10%)

AC frequency 45 to 65 Hz consumption <3.0 W

power wires 1 mm

to 2.5 mm2 (AWG17 to AWG14)

overvoltage category 2

ISOLATION

input - output 3000 Veff (60 seconds) power - input 3000 Veff (60 seconds) power - output 3000 Veff (60 seconds)

ENVIRONMENTAL

IP protection IP30 impact protection IK06 operation temperature from 0 to +50 ºC storage temperature from -20 to +70 ºC ‘warm-up’ time 15 minutes humidity 0 to 95% non condensing altitude up to 2000 meters

MECHANICAL

size 106 x 108 x 22.5 mm

mounting standard DIN rail (35 x 7.5 mm) connections

plug-in screw terminal

(pitch 5.08 mm)

housing material polyamide V0 weight <150 grams packaging 120 x 115 x 30 mm, cardboard

Page 12

DR-I4L isolated signal converter Instruction Manual

This page blank

Page 13

DR-I4L isolated signal converter Instruction Manual

12. How to operate the instrument

12.1 Conguration system

The instrument is fully congurable from the 3 push button keypad and

the 4 red digit led display at the front of the instrument (see Table 16).

Table 16 | CONFIGURATION SYSTEM

Key ‘SQ’ (<) Key ‘UP’ (5) Key ‘LE’ (3)

Display

DR-I4

12.2 ‘Normal mode’ of operation

AT POWER-UP

When the power supply is connected, the instrument applies the following sequence :

• the ‘display’ shows the rmware code ‘b3.xx’.

• the ‘display’ shows the congured ‘units’ and ‘input range’ (for

example: ‘Lc’ and ‘15’ for 0/15 mV in load cell mode, or ‘MV’ and ‘b15’

for ±15 mV in millivolt mode).

• the instrument is now in ‘normal mode’ of operation and the ‘display’

shows the ‘information’ congured at section 13.6.

FROM ‘NORMAL MODE’ OF OPERATION

From ‘normal mode’ of operation, the operator can access the following functions:

• key ‘SQ’ (<) gives access to the ‘conguration menu’ (see section 12.3).

• key ‘UP’ (5) gives access to the ‘force’ menu (see section 12.4).

• key ‘LE’ (5) activates the ‘messages’ function (see section 12.5).

‘ECO’ FUNCTION (‘DISPLAY’ POWERED OFF)

The ‘Eco’ function powers off the display under the following conditions:

• the instrument is in ‘normal mode’ of operation.

• and there is no interaction from the operator for 60 seconds.

The decimal point remains active (ashing), indicating that the instrument is working correctly. This is a congurable function, enabled by default. To congure the ‘Eco’ function, see section 13.9.

12.3 How to operate the ‘Conguration menu’

HOW TO ENTER THE ‘CONFIGURATION MENU’

With the instrument in ‘normal mode’ of operation (see section 12.2), press the ‘SQ’ (<) key and maintain for 1 second. The horizontal leds light from bottom to top. When the upper led lights, the instrument enters into the ‘conguration menu’.

When entering the ‘conguration menu’, the rst menu entry ‘Function code’ (codE) is displayed. See section 14 for a full view of the ‘conguration menu’.

If the ‘SQ’ (<) key is released before entering into the ‘conguration menu’, the horizontal leds light downwards from top to bottom, and the instrument returns to ‘normal mode’ of operation.

HOW TO OPERATE INSIDE THE ‘CONFIGURATION MENU’

Inside the ‘conguration menu’, use the front keypad to move through

menu entries, parameters, and select conguration values:

• Key ‘SQ’ (<) functions as the ‘ENTER’ key. It selects the menu entry

currently displayed. At numerical value entries, it validates the number displayed.

• Key ‘UP’ (5) moves vertically through the different menu entries. At

numerical value entries, it modies the selected digit by increasing its value to 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.

• Key ‘LE’ (3) functions as the ‘ESCAPE’ key. It leaves the selected

menu entry, and eventually, will leave the ‘conguration menu’. When leaving the ‘conguration menu’, the changed parameters are activated. At numerical value entries, the ‘LE’ (3) key allows to select the active digit. To modify a numeric value press the ‘UP’ (5) key to increase the value ‘+1’. Press the ‘SQ’ (<) key to validate the value.

WHEN EXITING THE ‘CONFIGURATION MENU’

When exiting the ‘conguration menu’ without changes (either by ‘rollback’ activation or because there are no changes in the conguration),

the horizontal leds light down from top to bottom, and the instrument

returns to ‘normal mode’ of operation. When exiting the ‘conguration menu’ with changes, the display leds light

a round shape while the new conguration is stored. When the round shape is nished, a start-up is applied (see section 12.2). After start-up, the new conguration is active and the instrument is in ‘normal mode’ of

operation.

‘ROLLBACK’ FUNCTION

If there is no interaction from the operator for 60 seconds, the instrument exits the ‘conguration menu’ discarding changes, and returns to ‘normal mode’ of operation.

Table 17 | ‘ECO’ DECIMAL POINT

DR-I4

Flashing

When the operator is inside the ‘conguration menu’, the output signal will remain overranged at maximum signal. Additional

congurations are available at the ‘On SQ’ parameter (see section 13.9).

When the operator exits the ‘conguration menu’, the output signal is temporarily set to minimum value for a time

<5 seconds, while the instrument restarts.

Page 14

DR-I4L isolated signal converter Instruction Manual

12. How to operate the instrument (cont.)

12.4 How to operate the ‘Force’ menu

HOW TO ENTER THE ‘FORCE’ MENU

With the instrument in ‘normal mode’ of operation (see section 12.2), press and hold the ‘UP’ (5) key for 1 second. The horizontal leds light from bottom to top. When the upper led lights, the instrument enters into the ‘force’ menu.

If the ‘UP’ (5) key is released before entering into the ‘force’ menu, the

horizontal leds light downwards from top to bottom, and the instrument

returns to ‘normal mode’ of operation.

HOW TO OPERATE INSIDE THE ‘FORCE’ MENU

The available functions inside the ‘force’ menu can be congured (see section 13.7). By default, ‘Force High’, ‘Force Low’, ‘Force Set’ and ‘Tare’ are available. Inside the ‘force’ menu:

• press the ‘UP’ (5) key to move to the next function.

• press the ‘SQ’ (<) key to activate the selected function.

When the function is active, the display will remain ashing. Press the ‘SQ’ (<) key to deactivate the function (display stops ashing), or wait for the rollback to activate.

Table 18 | Example of ‘Force’ menu with all functions set to ‘on’

‘Force Low’

‘Force high’

Force Set

Tare Tare value in mV

DESCRIPTION OF ‘TARE’ FUNCTION

The ‘tare’ function allows to view the actual value of the tare and manually apply a tare. Press the ‘SQ’ (<) key to enter the ‘tare’ function, and access the actual tare value expressed in millivolts’ (see section 10.1) with 2 decimal points. Press again the ‘SQ’ (<) key to apply a new tare. The instrument will show ‘ok’ while the new tare is applied, and will return back to indicate the new tare value applied. Tare value can also be accessed and manually modied at the ‘conguration menu’ (see section 13.4).

HOW TO EXIT ‘FORCE’ MENU

To exit the ‘force’ menu, press the ‘LE’ (3) key, or press the key ‘UP’ (5) key until the parameter ‘----’ appears, and select by pressing the ‘SQ’ (<) key, or wait without pressing any key until the automatic ‘rollback’ activates.

When exiting the ‘force’ menu, the horizontal leds light down from top to bottom, and the instrument returns to ‘normal mode’ of operation.

‘ROLLBACK’ FUNCTION

If there is no interaction from the operator for 60 seconds, the instrument exits the ‘force’ menu and returns to ‘normal mode’ of operation.

12.5 How to activate the ‘Messages’ function

HOW TO ACTIVATE ‘MESSAGES’ FUNCTION

With the instrument in ‘normal mode’ of operation (see section

12.2), press the ‘LE’ (3) key to activate the ‘messages’ function. The ‘messages’ function displays information about the instrument status.

The information available is congurable (see section 13.8).

The ‘messages’ function ends when all the information has been displayed or front keys ‘UP’ (5) or ‘SQ’ (<) are pressed. The ‘display’ returns to ‘normal mode’ of operation.

Exit

See section 13.7 for a list and a description of available functions.

DESCRIPTION OF ‘FORCE’ FUNCTIONS

The ‘force’ functions allow to manually force the output signal to the low and high levels of the output signal selected. These functions allow to easily validate the correct function of remote elements connected to the instrument output, such as PLC, HMI’s, SCADAs, etc.

The ‘force low’ function sets the output signal to the minimum value of the selected range (4 mA or 0 Vdc or the value congured at the ‘output_low’ parameter).

The ‘force high’ function sets the output signal to the maximum value of the selected range (20 mA or 10 Vdc or the value congured at the ‘output_high’ parameter).

The ‘force set’ function sets the output signal to a value between 0 and 100%

of the maximum selected range (4 to 20 mA or 0 to 10 Vdc or the range congured at the ‘output_low’ and ‘output_high’ parameters). When entering the ‘force set’ function, the display reads ‘50’ (the output is forced to 50% of the congured range). Use keys ‘UP’ (5) and ‘LE’ (3) to move up to 100% or down to 0% of the congured range.

12.6 Fast and advanced congurations

FAST CONFIGURATION

The fastest way to congure the instrument is to activate one of the predened conguration codes (see section 8).

Access the ‘conguration menu’ and enter the ‘Function code’ (codE)

menu entry. The code displayed is the current active input - output range.

Select the new code and validate. Selecting a code automatically exits the ‘conguration menu’ and activates the new conguration.

There are different codes for 4/20 mA and 0/10 Vdc output

signals.

To customize the input and output signals, see the ‘Advanced scaling’ section of the ‘conguration menu’ (see section 13.4).

ADVANCED CONFIGURATION

Additional conguration parameters are available at the ‘conguration menu’. The operator can customize the input and output signal ranges,

the messages seen on display, the functions available at the ‘force’ menu, the messages associated to the ‘LE’ (3) key, activate lters, password function, etc.

See section 13 for a detailed explanation on the ‘conguration menu’.

Page 15

DR-I4L isolated signal converter Instruction Manual

13. Conguration menu

13.1 Function codes

The fastest way to congure the instrument, is to select a predened conguration code (see section 8). At the ‘Conguration code’ (codE)

parameter use keys ‘UP’ (5) and ‘LE’ (3) to move up and down through the list of codes. Locate the desired code, and press ‘SQ’ (<). The instrument shows the ‘codE’ parameter. Press ‘LE’ (3) to exit the ‘conguration menu’. The instrument stores the new conguration, applies a ‘power-up’ routine and returns to the ‘normal mode’ of operation (see section 12.2).

Selecting a ‘reserved’ code or ‘----’ returns to the previous menu without changes.

When entering the ‘Function code’ (codE) parameter, the active ‘conguration code’ is displayed. If the actual conguration does not

match any of the conguration codes, code ‘uSEr’ is displayed. There are different codes for 4/20 mA output (codes from 010 to 099)

and 0/10 Vdc output (codes from 110 to 199) (see section 8). Custom input and output signal ranges can be congured at the

‘Advanced scaling’ section of the ‘conguration menu’ (see section 13.4).

Conguration code

Input conf.

Mode

Signal range

Enter the code (see Table 8)

Load cell mode

Millivolt mode

0/5 mV

0/10 mV

0/15 mV

0/20 mV

0/25 mV

13.2 Initial conguration

At the ‘Input conguration’ (InP) menu entry, congure the reading mode and the input signal range.

If you have already selected a conguration code (see section

13.1), the input signal has been already selected and there is

no need to manually select the ‘Mode’ (ModE) or ‘Signal range’

(rAnG) parameters again.

At the ‘Mode’ (ModE) parameter select ‘cELL’ for load cell measurement, or select ‘MV’ for millivolt measurement. See section 7.2 and 7.3 for an explanation of the differences between both modes.

At the ‘Signal range’ (rAnG) parameter select the input signal range.

Input signal ranges can also be congured by selecting a pre-dened conguration code (see section 13.1).

For an example on how to calculate the appropriate input signal range for a given load cell, see section 7.7.

To customize to an intermediate range (for example 0/7.5 mV) see

section 13.4. To manually select the output signal see section 13.3. At the ‘Excitation voltage’ (V.EXc) parameter select ‘oFF’ to disable the

excitation voltage. Excitation voltage is set to ‘on’ when selecting the ‘cELL’ mode, and set to ‘oFF’ when selecting the ‘MV’ mode at the ‘Mode’ (ModE) parameter.

0/30 mV

0/40 mV

0/50 mV

0/60 mV

0/70 mV

0/80 mV

±5 mV

±10 mV

±20 mV

±30 mV

±40 mV

±50 mV

±60 mV

±70 mV

±80 mV

13.3 Output range

At the ‘Output range’ (out) menu entry, select the output signal range to

4/20 mA (value ‘420’) or to 0/10 Vdc (value ‘010’). The output signal range selected can be later customized to operate in a

reduced range of signal (see section 13.4).

Excitation voltage

Output range

Page 16

DR-I4L isolated signal converter Instruction Manual

13. Conguration menu (cont.)

13.4 Advanced scaling

At the ‘Advanced scaling’ (Ad.Sc) menu, customize the actual value for the tare, the input and output signal ranges and, if used, the process

value. When selecting a predened conguration code, the parameters are congured according to the code selected. The parameters are accessible for manual conguration:

• at ‘Tare’ (tArE) view the actual value of the tare parameter, expressed

in ‘x.xx’ mV’ (see section 10.1). To reset the tare value manually set this parameter to ‘0.00’. Selecting a new ‘conguration code’ (see section

13.1) or a new ‘signal range’ (see section 13.2) also restes the ‘tare’

value to zero.

• at the ‘Input low signal’ (In.Lo) parameter congure the low input

signal value. This value is expressed in ‘x.xx’ mV’ (see section 10.1). The parameter value is not affected by changes at the tare value.

• at the ‘Input high signal’ (In.hI) parameter congure the high input

signal value. This value is expressed in ‘x.xx’ mV’ (see section 10.1). The parameter value is not affected by changes at the tare value.

• at the ‘Output low signal’ (ou.Lo) parameter congure the low output

signal value. This value is expressed in ‘x.xx’ mA or in ‘x.xx’ Vdc.

• at the ‘Output high signal’ (ou.hI) parameter congure the high

output signal value. This value is expressed in ‘x.xx’ mA or in ‘x.xx’ Vdc.

These four parameters dene the relation between the input and the output signal (see Table 19) and can be modied independently, to match the specic input-output relation for your application (see Table 20).

Advanced scaling

Tare value (in mV’)

Input signal low (in mV’)

Input signal high (in mV’)

Output signal low

Output signal high

Process low

Process high

Process decimal point

Table 19 | EXAMPLE FOR CODE ‘011’ (0/10 mV=4/20 mA)

Output

20 mA

4 mA

0 mV’ 10 mV’

Selecting the predened code ‘011’ congures a range of 0/10 mV’=4/20 mA, and the values congured are as indicated below:

input_low = 0.00 mV’ output_low = 4.00 mA input_high = 10.00 mV’ output_high = 20.00 mA

Input

Additionally, a process value can be scaled using the last three parameters of the ‘Advanced Scaling’ (Ad.Sc) menu. The actual process value can be accessed through the ‘display information’ function (see section 13.6) or the ‘messages’ function (see section 13.8).

• at the ‘Process low’ (Pr.Lo) parameter, congure the process value

associated to the low input signal value.

• at the ‘Process high’ (Pr.hI) parameter, congure the process value

associated to the high input signal value.

• at the ‘Process decimal point’ (Pr.dP) parameter, congure the

decimal point position for the process value.

Table 20 | EXAMPLE FOR CUSTOM RANGE (-8/+8 mV=1/9 Vdc)

Output

9 Vdc

1 Vdc

Input-8 mV’ +8 mV’

To congure -8/+8 mV’=1/9 Vdc, select code 122 (-10/+10 mV’=0/10 Vdc) and then congure the parameters below:

input_low = -8.00 mV’ output_low = 1.00 Vdc input_high = 8.00 mV’ output_high = 9.00 Vdc

Page 17

DR-I4L isolated signal converter Instruction Manual

13. Conguration menu (cont.)

13.5 Field correction

At the ‘Field correction’ (F.cor) menu, there is access to the ‘eld correction’ functions. The ‘eld correction’ functions allow to modify the ‘input signal low’ and ‘input signal high’ parameters of the ‘Advanced scaling’ menu (see section 13.4), based on the actual input signal

measured at the input. Functions used to correct and ne tune the

slope of the load cell, by loading low and high weights and applying the correction low and high. Tares can are applied after the correction.

• select the ‘Field correction low’ (Fc.Lo) function to set the actual

input signal value at the ‘input signal low’ parameter of the ‘Advanced scaling’ menu. While measuring the value, the message ‘ok’ remains

ashing for 5 seconds. When the measure is completed, the instrument

returns to the ‘Field correction low’ (Fc.Lo) parameter.

• select the ‘Field correction high’ (Fc.hI) function to set the actual

input signal value at the ‘input signal high’ parameter of the ‘Advanced scaling’ menu. While measuring the value, the message ‘ok’ remains

ashing for 5 seconds. When the measure is completed, the instrument

returns to the ‘Field correction high’ (Fc.hI) parameter.

The ‘tare’ value is reset to ‘0’ when a ‘Field correction low’ (Fc.Lo) or ‘Field correction high’ (Fc.hI) is applied.

13.6 Display information

At the ‘Display information’ (dISP) menu select one parameter to read on display when the instrument is in ‘normal mode’ of operation. If you need access to more than one information, see the ‘messages’ function (see section 13.8) associated to front key ‘LE’ (3).

• select ‘Measure’ (MEAS) to read the value of the actual millivolts at

signal terminals (for example: ‘MEAS mV 7.82’). Value is expressed in millivolts (see section 10.1).

• select ‘Tare’ (tArE) to read the actual value of the ‘tare’ parameter.

(for example : ‘tArE mV 1.27’) This value is expressed in corrected millivolts (mV’) (see section 10.1).

• select ‘Input signal value’ (InP.S) to read the input signal value and

the measurement units (for example: ‘Inp mV 8.52’). This value is expressed in millivolts (mV’) (see section 10.1).

Field

correction

Display

information

Field correction

low

Field correction

low

‘ok’ message ashes while the ‘eld correction’ function

is being applied and when

nished, the instrument returns to previous menu entry.

Millivolts at signal terminals (in mV)

Tare value (in mV’)

Input signal value (in mV’)

Output signal value

Label

Process value

Signal percentage

Excitation voltage (in Vdc)

Excitation current (in mA)

• select ‘Output signal value’ (out.S) to read the output signal value

and the measurement units (for example : ‘Out mA 12.40’).

• select ‘Label’ (LAbL) to read the value congured at the ‘label’ and

‘label2’ parameters (see section 13.9).

• select ‘Process value’ (Proc) to read the process value as scaled at

the process parameters (see section 13.4) (for example: ‘Proc 150.0’).

• select ‘Percentage’ (Prct) to read the percentage of input signal,

where ‘0’ is the value assigned to the ‘input signal low’ parameter, and ‘100’ is the value assigned to the ‘input signal high’ parameter (see section 13.4) (for example: ‘Prct 23.5’).

• select ‘Excitation voltage’ (EX.V) to read the value of the excitation

voltage received by the load cell. This value is read from the ‘sense’ terminals (see section 7.2) (for example : ‘ExV 4.97’).

• select ‘Excitation current’ (EX.MA) to read the value of the current

provided through the excitation voltage terminals (for example: ‘ExMA 14.3’).

Page 18

DR-I4L isolated signal converter Instruction Manual

13. Conguration menu (cont.)

13.7 Key ‘UP’ (‘force’ menu)

The key ‘UP’ (5) at the front of the instrument gives access to a

congurable list of functions (see section 12.4).

At the ‘Key UP (‘force’ menu)’ (K.uP) menu select which functions will be available when pressing the front key ‘UP’ (5). Select ‘on’ to activate the desired functions.

• congure ‘Force Low’ (F.Lo) to ‘on’ to activate the ‘Force low’ function

menu entry.

• congure ‘Force High’ (F.hI) to ‘on’ to activate the ‘Force high’ function

menu entry.

• congure ‘Force Set’ (F.SEt) to ‘on’ to activate the ‘Force set’ function

menu entry.

• congure ‘Tare ’ (tArE) to ‘on’ to activate the ‘Tare’ function menu

entry.

The functions congured to ‘on’ are available at the ‘force’ menu. See section 12.4 for a description on each function and how to operate them.

Key ‘UP’

(‘force’ menu)

Force low

Force high

Force set

Tare

13.8 Key ‘LE’ (‘messages’ function)

The key ‘LE’ (3) at the front of the instrument gives access to a

congurable set of information messages.

At the ‘Key LE (messages function)’ (K.LE) menu, select the informations to be displayed when the front key ‘LE’ (3) is pressed (see section 12.5). Select ‘on’ to activate each information.

• congure ‘mV at terminals’ (MEAS) to ‘on’ to see the value in

millivolts at terminals (for example : ‘MEAS mV 13.82’).

• congure ‘Tare value’ (tArE) to ‘on’ to see the actual value of the ‘tare’

parameter. (for example : ‘tArE mV 1.27’) This value is expressed in corrected millivolts (mV’) (see section 10.1).

• congure ‘Input signal value’ (InP.S) to ‘on’ to see the input signal

value and the measurement units (for example: ‘Inp mV 8.52’). This value is expressed in millivolts (mV’) (see section 10.1).

• congure ‘Output signal value’ (out.S) to ‘on’ to see the output signal

value and the measurement units (for example : ‘Out mA 12.40’).

• congure ‘Label’ (LAbL) to ‘on’ to see the value congured at the

‘label’ and ‘label2’ parameters (see section 13.9).

• congure ‘Process value’ (Proc) to ‘on’ to see the process value as

scaled at the process parameters (see section 13.4) (for example: ‘Proc 150.0’).

• congure ‘Percentage’ (Prct) to ‘on’ to see the percentage of

input signal, where ‘0’ is the value assigned to the ‘input signal low’ parameter, and ‘100’ is the value assigned to the ‘input signal high’ parameter (see section 13.4) (for example: ‘Prct 23.5’).

• congure ‘Excitation voltage’ (EX.V) to ‘on’ to see the value of the

excitation voltage received by the load cell. This value is read from the ‘sense’ terminals (see section 7.2) (for example : ‘ExV 4.97’).

• congure ‘Excitation current’ (EX.MA) to ‘on’ the value of the current

provided through the excitation voltage terminals (for example: ‘ExMA

14.3’). When more than one parameter is set to ‘on’, values will be displayed

sequentially, in the same order as they are listed in the menu, with a middle dash ‘-’ between them. When all information has been displayed, the instrument returns to ‘normal mode’ of operation.

Key ‘LE’

(messages function)

mV at terminals

Tare value (in mV’)

Input signal value

(in mV’)

Output signal value

Label

Process value

Percentage

Excitation voltage

Excitation current

Page 19

DR-I4L isolated signal converter Instruction Manual

13. Conguration menu (cont.)

13.9 ‘Tools’ menu

The ‘Tools’ (tool) menu groups several functions.

• at the ‘Eco mode’ (Eco) parameter, dene the time to wait before the

display is powered off (while in ‘normal mode’ of operation). Default

value is 60 seconds. Congure ‘0’ to disable the function and maintain

the display always on.

• at the ‘SOS mode’ (SoS) parameter select ‘on’ to activate the output

signal to a predened value. Select the value from 0 to 100 % of the active output range (4/20 mA or 0/10 Vdc). To deactivate the ‘SOS

mode’ select ‘oFF’. See section 5 for more information on the ‘SOS mode’.

• at the ‘Label’ (LAbL) parameter, dene an alphanumerical value to

be displayed on the display, when the instrument is in ‘normal mode’ of operation, or at the ‘messages’ function when the key ‘LE’ (3) is pressed. The label can be used to identify the instrument with its own internal factory code. If more than four characters are needed, congure the ‘Label 2’ (LbL.2) parameter. The total label value is the characters at ‘label’ followed by the characters at ‘label2’. For additional information and a list of available characters, see section 6.

• at the ‘On error’ (on.Er) parameter, congure the behavior of the

output signal, in case of error at the input signal (see section 16).

• select ‘Output to high’ (to.hI) to force the output signal to overrange to maximum value

• select ‘Output to low’ (to.Lo) to force the output signal to underrange to minimum value

• select ‘Standard output’ (Stdr) to overrange output signal to maximum value in case of input signal overrange, and to underrange output signal to minimum value in case of input signal underrange.

• at the ‘On ‘SQ’’ (on.Sq) parameter, congure the behavior of the

output signal when the operator is inside ‘conguration menu’ (see section 12.3).

• select ‘Output to high’ (to.hI) to force the output signal to overrange

to maximum value (21.5 mA, 10.5 Vdc)

• select ‘Output to low’ (to.Lo) to force the output signal to

underrange to minimum value (0 mA, 0 Vdc)

• select ‘Hold output’ (hoLd) to hold the output signal while the operator remains inside ‘conguration menu’.

• at the ‘Power lter’ (P.FLt) parameter, select a lter for specic power

frequency rejection. The lter selection has an effect on the response

times (see section 11).

• select ‘No lter’ (nonE) to disable frequency rejection lters. This enables the fastest response time.

• select ‘50 Hz lter’ (50.hZ) to enable rejection to 50 Hz frequency.

• select ‘60 Hz lter’ (60.hZ) to enable rejection to 60 Hz frequency.

• select ‘50 and 60 Hz lter’ (both) to enable rejection to both 50 Hz

and 60 Hz frequencies. This is the slowest response time.

• at the ‘Average lter’ (AVr) parameter, congure the recursive lter

to be applied to measured input signal. The lter can be used to reduce oscillations on noisy signals. Congure the lter strength between ‘0’ and ‘100’. The lter is stronger with higher values. Increasing the strength of the lter slows the response speed of the instrument. Value ‘0’ disables the lter.

Tools

‘Eco’ mode

SOS mode

Label

Label 2

On error

On ‘SQ’

Power lter

Average lter

5 to 255 seconds (0 disabled) (60 sec. default)

% of output

Alphanumerical

Output to high

Output to low

Standard output

Output to high

Output to low

Hold output

No lter

50 Hz lter

60 Hz lter

50 and 60 Hz lter

0 to 100

Page 20

DR-I4L isolated signal converter Instruction Manual

13. Conguration menu (cont.)

• at the ‘Dead band’ (d.bnd) parameter set a value between ‘0.0’ %

and ‘100.0’ %. This is a percentage of the ‘input signal high’ parameter congured at the ‘Advanced scaling’ section. Input signals below this

value, are treated as a ‘0’.

example : instrument congured with code ‘011’ (0/10 mVdc = 4/20 mA) and ‘input signal high’ parameter modied to 8 mVdc for an effective input - output relation of ‘0/8 mVdc = 4/20 mA’. Congure the ‘Dead band’ parameter to ‘1.0’ to set a dead band value of 0.08 mVdc. All signals below

0.08 mVdc will be treated as 0 mVdc, and the output will be 4 mA.

• the ‘Version’ (VEr) parameter informs about the rmware version

running in the instrument.

• at the ‘Password’ (PASS) parameter dene a 4 digit code to

block access to the ‘conguration menu’. Activate the password to

prevent access to the instrument conguration by non authorized

personnel. To activate the ‘Password’ function select ‘on’, enter the code and validate. The password will be requested when accessing the ‘conguration menu’. The password does not block access to the ‘force’ menu. To deactivate the password, set the parameter to ‘oFF’.

• at the ‘Factory reset’ (FAct) parameter select ‘yes’ to activate the

default factory conguration (see section 15 for a list of factory

default parameters).

‘Dead band’

Version

Password

Factory reset

0.0 to 100.0%

Page 21

DR-I4L isolated signal converter Instruction Manual

14. Full conguration menu

Press ‘SQ’ (<) for 1 second to access the ‘conguration menu’. For a description on how to operate inside the menus see section 12. For a full vision of the ‘conguration menu’ structure see section 13.

Enter the function code (see section 8)

Function code

Output range

Tare value (in mV’)

Input conf.

Mode

Signal range

Load cell mode

Millivolt mode

0/5 mV

0/10 mV

0/15 mV

0/20 mV

0/25 mV

0/30 mV

0/40 mV

0/50 mV

0/60 mV

0/70 mV

0/80 mV

±5 mV

Advanced scaling

Field correction

low

Field correction

low

Input signal low (in mV’)

Input signal high (in mV’)

Output signal low

Output signal high

Process low

Process high

Process decimal point

‘ok’ message ashes while the ‘eld correction’ function

is being applied and when

nished, the instrument returns to previous menu entry.

Excitation voltage

±10 mV

±20 mV

±30 mV

±40 mV

±50 mV

±60 mV

±70 mV

±80 mV

Excitation voltage

Display

information

Millivolts at signal terminals (in mV)

Tare value (in mV’)

Input signal value (in mV’)

Output signal value

Label

Process value

Signal percentage

Excitation voltage

Excitation current

Page 22

DR-I4L isolated signal converter Instruction Manual

14. Full conguration menu (cont.)

Key ‘UP’

(‘force’ menu)

Key ‘LE’

(messages function)

Force low

Force high

Force set

Tare

mV at terminals

Tare value (in mV’)

Input signal value

(in mV’)

Output signal value

Tools ‘Eco’ mode

SOS mode

Label

Label 2

On error

On ‘SQ’

5 to 255 seconds (0 disabled) (60 sec. default)

% of output

Alphanumerical

Output to high

Output to low

Output standard

Output to high

Output to low

Hold output

Label

Process value

Percentage

Excitation voltage

Excitation current

Power lter

Average lter

‘Dead band’

Version

Password

No lter

Filter for 50 Hz

Filter for 60 Hz

Filter for 50 Hz and 60 Hz

0 to 100

0.0 to 100.0%

Factory reset

Page 23

DR-I4L isolated signal converter Instruction Manual

15. Factory default parameters

Function code (codE) 11 [c.011]

Input conguration (InP) Mode (ModE) load cell (cELL) Signal range (rAnG) 10.00 mV Excitation voltage (V.EXc) on Output range (out) 4/20 mA Advanced scaling (Ad.Sc) Tare (tArE) 0.00 [mV’] Input signal low (In.Lo) 0.00 [mV’] Input signal high (In.hI) 10.00 [mV’] Output signal low (ou.Lo) 4.00 [mA] Output signal high (ou.hI) 20.00 [mA] Process low (Pr.Lo) 0 Process high (Pr.hI) 1000 Process decimal point (Pr.dP) 8888 (no decimal point) Display information (dISP) mV at signal terminals (MEAS) Key ‘UP’ (‘force’ menu) (K.uP) Force low (F.Lo) on Force high (F.hI) on Force set (FSEt) on Tare (tArE) on Key ‘LE’ (‘messages’ function) (K.LE) Measure (MEAS) off Tare value (tArE) off Input signal value (InP.S) off Output signal value (out.S) on Label (LAbL) off Process value (Proc) off Percentage (Prct) off Excitation voltage (EX.V) off Excitation current (EX.MA) off Tools (tooL) ‘Eco’ mode (Eco) 60 [seconds] SOS mode (SoS) off Label (LAbL) LAbL Label 2 (LbL.2) ---- (disabled) On error (on.Er) to.hI (output to maximum value) On ‘SQ’ (on.Sq) to.hI (output to maximum value)

Power lter (P.FLt) both (50 and 60 Hz lter) Average lter (AVr) 0 (disabled)

Dead band (d.bnd) 0.0 (disabled) Password (PASS) off (disabled)

RESET TO DEFAULT FACTORY PARAMETERS

To recover the instrument to default factory parameters, enter into ‘conguration menu’ and go to ‘Tools’ / ‘Factory reset’ and select ‘yes’

• access the ‘conguration menu’ (press key ‘SQ’ (<) for 1 second)

• press key ‘UP’ (5) to locate ‘tools’ and press ‘SQ’ (<)

• parameter ‘Eco mode’ appears on display

• press key ‘UP’ (5) to locate ‘Factory reset’ and press ‘SQ’ (<)

• value ‘no’ appears on display

• press key ‘UP’ (5) and ‘Yes’ appears on display

• press key ‘SQ’ (<) to apply the factory reset

• the leds light a round shape while the new conguration is applied

• the start up message appears (‘Lc 10’)

• the actual signal input value is displayed

• the instrument is in ‘normal mode’ of operation

16. Error codes

In case of error, the error code is shown ashing on the digits. The error

code is not visible inside ‘conguration mode’ or inside the ‘force’ menu. The error code remains active on display until the problem that caused

the error is solved. In case of multiple error codes, solve the rst problem

to see the next active error code.

In case of error, the output can be congured to overrange or underrange.

See the ‘On error’ (on.Er) parameter at section 13.9.

Table 21 | Error codes

Error Description

‘Er.01’ Password error. The password code entered is not correct.

‘Er.02’

‘Er.03’

‘Er.04’

‘Er.05’

‘Er.08’

‘Er.09’

‘Er.10’

‘Er.15’

‘Er.17’

Messages do not affect the output signal, and do not trigger the ‘On error’ (on.Er) function.

Table 22 | Messages

Message Description

‘d.oVr’

‘d.udr’

‘-nA-’

Input hardware overrange. The input signal is higher than the maximum signal that can be measured.

Input hardware underrange. The input signal is lower than the minimum signal that can be measured.

Output hardware overrange. The output signal should be higher than the maximum output signal that can be generated.

Output hardware underrange. The output signal should be lower than the minimum output signal that can be generated.

Scaled input slope not valid. The values for ‘Input signal low’ (In. Lo) and ‘Input signal high’ (In.hI) can not be the same. Enter a

different value to validate the parameter Scaled output slope not valid. The values for ‘Output signal low’

(ou.Lo) and ‘Output signal high’ (ou.hI) can not be the same. Enter a different value to validate the parameter

Scaled process display slope not valid. The values for ‘Process low’ (Pr.Lo) and ‘Process high’ (Pr.hI) can not be the same. Enter

a different value to validate the parameter

Error at ‘sense’ wires. Signal detected at ‘sense’ wires is below

3.5 Vdc. Correct value should be around 5 Vdc. Short circuit,

broken cell, ...

Overload at the excitation current. The current provided by the

excitation terminals is higher than 70 mA. Short circuit, broken

cell, too many cells, ...

Display overrange. The display value should be higher than the maximum value that can be displayed.

Display underrange. The display value should be lower than the minimum value that can be displayed.

Function not available. For the actual conguration, the function is

not available.

(see section 13.4).

Page 24

DR-I4L isolated signal converter Instruction Manual

17. Precautions on installation

Check the documentation when you nd this symbol, to know

the nature of a potential danger and actions to prevent it.

Risk of electrical shock. Instrument terminals can be connected to dangerous voltage.

Instrument protected with double isolation. No earth connection required.

Instrument conforms to CE rules and regulations.

This instrument has been designed and veried conforming to the

61010-1 CE Security Regulation, for industrial applications. Installation

of this instrument must be performed by qualied personnel only. This

manual contains the appropriate information for the installation. Using

the instrument in ways not specied by the manufacturer may lead to a reduction of the specied protection level. Disconnect the instrument

from all external circuits before starting any maintenance and / or installation action.

The instrument does not have a general switch and will start operation as soon as power is connected. The instrument does not have protection fuse, the fuse must be added during installation.

The instrument is designed to be DIN rail mounted, inside a closed cabinet, protected from direct impacts. An appropriate ventilation of the instrument must be assured. Do not expose the instrument to excess of humidity. Maintain clean by using a humid rag and do NOT use abrasive products such as alcohols, solvents, etc. General recommendations for electrical installations apply, and for proper functionality we recommend : if possible, install the instrument far from electrical noise or magnetic

eld generators such as power relays, electrical motors, speed variators,

... If possible, do not install along the same conduits power cables (power, motor controllers, electrovalves, ...) together with signal and/or control cables. The use of shielded cables is recommended to prevent the coupling of environmental electromagnetic noise, connected to earth only one cable end side. Before proceeding to the power connection, verify that the voltage level available matches the power levels indicated

in the label on the instrument. In case of re, disconnect the instrument from the power line, re alarm according to local rules, disconnect the air conditioning, attack re with carbonic snow, never with water.

19. CE declaration of conformity

Products DR-I4L The manufacturer declares that the instruments indicated comply with the

directives and rules indicated below. Electromagnetic compatibility directive 2014/30/EU

Low voltage directive 2014/35/EU ROHS directive 2015/863/EU

WEEE directive 2012/19/EU

Security rules EN-61010-1

Instrument Fixed, Permanently connected Pollution degree 1 and 2 (without condensation) Isolation Double Overvoltage category 2

Electromagnetic compatibility rules EN-61326-1

EM environment

CISPR 11 Instrument Class A & Class B Group 1

Industrial

According to directive 2012/19/EU, electronic equipment

must be recycled in a selective and controlled way at the end of its useful life.

Conformity with security regulations EN-61010-1 requires a closed front cover. There is no need to open the front cover

under normal usage or conguration. The output terminal

prevents the front cover from opening. An open front cover may expose areas with dangerous voltages. Remove connections with dangerous

voltages before opening. Only to be performed by qualied operators.

18. Warranty

This instrument is warranted against all manufacturing defects for a period of 36 months, as requested by the European legislation. This warranty does not apply in case of misuse or accident, and the scope of the warranty is limited to repair of the instrument, not being the manufacturer responsible for additional damages or additional costs. Within the warranty period and after examination by the manufacturer, the unit will be repaired or substituted when found to be defective.

Page 25

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product.

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion; or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA’s control. Components in which wear is not warranted, include but are not limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by it will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESS OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic WARRANTY / DISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.

RETURN REQUESTS/INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return package and on any correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.

FOR WARRANTY RETURNS, please have the following information available BEFORE contacting OMEGA:

1. Purchase Order number under which the product was PURCHASED,

2. Model and serial number of the product under warranty, and

3. Repair instructions and/or specific problems

relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and engineering.

reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC.

FOR NON-WARRANTY REPAIRS, for current repair charges. Have the following information available BEFORE contacting OMEGA:

1. Purchase Order number to cover the COST of the repair,

2. Model and serial number of the product, and

3. Repair instructions and/or specific problems

relative to the product.

consult OMEGA

Page 26

Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA…Of Course!

Shop online at omega.com

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