London Electronics IL2-L Configuration guide

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Document Ref:pm65\manuals\INT2_L Revision:17 Dated: 10 September 2010
Software version F00.18
Panel mounting load indicator
IL2-L
Connection details, scaling and general information
!
Caution: There is a risk of electrical
shock if this instrument is not properly installed
Caution: Risk of danger: Read the whole
manual before you install this meter
London Electronics Limited
Thorncote Road, Near Sandy, Bedfordshire SG19 1PU
Tel [phone] Fax [phone]
www.london-electronics.com [e-mail]

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.

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Contents
Warnings 4
Introduction 5
General Description 6
Panel mounting & Installation - Class II 7
DIN Rail mounting option 8
Other Mounting options 9
WiringAdvice 10
Connections 11
Installation hints for best performance 12-13
Easy/Advanced menu mode 14
Language Selection 15
Display Brightness 16
Display Calibration Modes 17
Direct Calibration 18-19
Theoretical Calibration 20-21
Sensor Drift correction 22
Logic Input connections & Front Buttons 23
Factory defaults 24
Calibration Audit number 24
Signal Filtering / Averaging 25
Last Digit rounding 26
Menu Timeout adjustment 27
Bootup Routine choices 28
Error Codes 29
WEEE 30
Equipment Specifications 31
Record of Revisions 32
Notes 33-25
Declaration of Conformity 36
* Need a manual urgently?
You can download manuals from http://www.london-electronics.com/manuals/

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Safety First ..............Don't assume anything............. Always double check.
If in doubt, ask someone who is QUALIFIED to assist you in the subject.
Warnings
Please carefully read this manual and all warnings. Install the meter ONLY when you are sure
that you’ve covered all aspects.
Where the product is intended for “UL” installations, removal or
addition of option boards is not permitted.
Check that the model number and supply voltage suit your application before
you install the meter.
Connect the meter according to current IEE regulations, IEC61010 &
NFPA:70 National Electric Code in USA.
This meter is for Installation class II service only. This means it
has exposed electrical and power terminals. You must install it in a
suitable fire enclosure which will also protect users from electric shock
We designed this meter for Pollution-Degree 2 environments only.
Power supplies to this equipment must have anti-surge (T) fuses rated at 400mA for
230V supply, 400mA for 110V supply or 2A for DC supplies in the range 11-30VDC.
Only Siba fuses in series 189500, cULus listed according to file #E167295 are
accepted for this service under the terms of UL listing.Aswitch or circuit breaker, clearly
marked as a disconnecting device, must be included close to the installation.
Don’t touch any circuitry after you have connected the meter, because there may be
lethal voltages on the circuit board.
Only adjust on-board switches or connections with the power turned off
Make sure all screw terminals are tight before you switch the meter on.
Only clean the meter’s front with a soft damp cloth. Only lightly dampen with water.
Do not use any other solvents. The behind-panel case may be cleaned with a dry cloth
only, use no liquid or solvent on it.
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Introduction
Please contact us if you need help, if you have a complaint, or if you have suggestions to help
us improve our products or services.
If you contact us about a product you already have, please tell us the full model number and
serial number, so that we can give you accurate and fast help.
This product has a 2 year warranty. We will put right or replace any meter which is faulty
because of bad workmanship or materials. This warranty does not cover damage caused by
misuse or accident.
If you return a unit for repair, please include a detailed description of the problem, and the
name of a contact who we can refer to for any questions. Please mark for the attention of the
QA Department.
IMPORTANT
If this equipment is important to your process, you may want to buy a spare to cover possible
failure or accidental damage in the future.
This is because during factory shutdown periods, you may have to to wait several weeks for
an equivalent replacement, or we may have no stock at the time you urgently need it.
You may also need to pay extra carriage charges if you want a fast, guaranteed courier service.
Warranty repairs or replacements are usually returned with a standard courier service.
We do not offer compensation for losses caused by failure of this instrument.
If you do not agree with these conditions, please return this item in unused, condition, in its
original packaging and we will refund the purchase price, excluding any carriage paid.
We thought you’d prefer to know about possible delays and extra charges now, rather than
during a panic. Aspare unit could help to avoid these issues.
We always try to improve our products and services, so these may change over time. You
should keep this manual safely, because future manuals, for new designs, may not describe
this product accurately.
We believe these instructions are accurate, and that we have competently designed and
manufactured the product, but please let us know if you find any errors.

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General Description
This series of meters accepts industrial sensors to allow various physical measurements to
be made, such a weight, temperature, pressure, humidity etc. Different models are available
for different sensor types.
The main function of this series is to give a numeric readout of the variable being monitored.
Most models include an excitation power output, to power the sensor directly.
Various optional output modules are also available to give alarm relay outputs, analogue
output or digital communications, or any combination of these options.
Meters are programmed using front panel pushbuttons. The buttons may be locked with a
rear switch.
Meters have two power supply options : 100-240 VAC or 11-30VDC
These meters are designed to mount into a protective enclosure which will protect users from
contact with power and signal wiring.
These units must be installed fully assembled, and must be installed according to local electrical
installation rules. When properly installed, they provide ingress protection to IP65 / NMA4X
from the front
Safety
Obey all safety warnings in this manual, and install the meter according to local wiring and
installation regulations. Failure to follow these guidelines may cause damage to the meter,
connected equipment, or may be harmful to personnel.
Any moving mechanical device controlled by this equipment must have suitable access guards
to prevent injury to personnel if the meter should fail.
!
Caution: There is a risk of electrical
shock if this instrument is not properly installed
Caution: Risk of danger: Read the whole
manual before you install this meter

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Panel Mounting and Installation - Class II
Install the meters in a suitable protective electrical control enclosure according to local wiring
regulations. See specifications for maximum allowable temperature in enclosure. Allow
adequate air circulation.
888888
92mm +1mm -0mm
45mm +1mm -0mm
Panel cutout
Installing into front of panel
Remove the two rear bracket
screws and safely store them
and the U-Bracket for later fitting.
Gasket
Gasket
Front surface
of enclosure
Front surface
of enclosure
Front surface
of meter
U-Bracket
Bracket screw (1 of 2) Left side of meter case
U-Bracket
Bracket screws
U-Bracket
Bracket screws
Slide the meter, with gasket
into the panel cutout
Securing into the panel
Re-fit the U-Bracket and tighten the bracket
screws to firmly clamp the meter in place.
Check that the gasket is evenly pinched
between the meter’s front bezel and the
enclosure front
Ventilation
There should be sufficient ventilation in the
enclosure to ensure that the meter’s case is
always kept to less than 60C.
Meter Spacing.
Meters should be spaced apart sufficiently
to allow a free flow of ventilation air around
the meters, such that no part of the case will
exceed 60C
Side view of meter installed in panel

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DIN Rail Mounting option
The INT2 Series is ideal if you need high precision signal conditioning. Sometimes, it is not
necessary to have front panel indication, so in such cases, we offer a DIN rail mounting option,
which allows the INT2 to be installed within a control panel.
Detachable connectors add to the simplicity of installation, and of course the setup method is
identical to the panel mounting version, so you don’t need to learn a new method.
The INT2’s display remains active, so you can see at a glance the status of your signals, and
programming is simple, using the 4 buttons.
Output functions include isolated 16 bit 4-20mA, 0-10V, -10 to +10V, RS232, RS485 and up
to 4 alarms with a wide choice of alarm functions.
Install the meters in a suitable protective electrical control enclosure according to local wiring
regulations. See specifications for maximum allowable temperature in enclosure. Allow
adequate air circulation.
Securing into the panel
Use standard top-Hat DIN rail 35 mm x 7.5 mm (EN 50022, BS 5584, DIN 46277-3)
Ventilation
There should be sufficient ventilation in the enclosure to ensure that the meter’s case is
always kept to less than 60C.
Meter Spacing.
Meters should be spaced apart sufficiently to allow a free flow of ventilation air around the
meters, such that no part of the case will exceed 60C

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Other mounting options
IP67 SPC4
The SPC4 splashproof cover gives
IP67 / NEMA4-X protection for the
front of your meter. Ideal for use in
harsh wet environments.
Available with optional security tag
ports to allow you to fit your own
crimped wire tamper-seals, to pre-
vent or indicate unauthorised access
(Similar to tags used on electricity
meters)
Wall Box
The Wallbox is sealed IP65 all round,
and is supplied with the meter in-
stalled, for you to wire to, via 3 cable
glands. It comes complete with SPC4
splashproof cover.
We also offer a dual version of this
enclosure, which can take 2 meters,
one above the other.
PCC Series
The PCC series of Portable Carrying
cases is ideal for housing your panel
meters so that they can be used in the
lab. These enclosure come fully
wired, with panel meters fitted and
with IEC switched power connector
plus any input or output connectors,
as required.
Versions are available to accept 1, 2,
4, 6, 8, 12 or 16 meters

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Wiring Advice
This meter uses detachable screw terminal connectors. Refer to the wiring diagram on the
following page for the correct positioning of each wire.
The conductors you use must be suitable for the meter’s temperature, current and voltage
rating, which is broadly described as follows:-
Cable Temperature Rating
All cables must be rated for operation up to 90C continuous.
Cable gauge and screw tightness
The connectors on this instrument can accept conductors up to 16 gauge AWG / 1.5mm2
c.s.a. The minimum cross sectional area shall be 22 gauge AWG / 0.5mm2 . Tighten screw
terminals to 7.0 lb/in torque / 0.8 Nm torque.
Cable insulation voltage rating
Cables shall have an insulation voltage rating of at least 380V continuous.
Wire preparation:
We recommend multi-strand wire, because it withstands vibration better than single strand
cable. Pull the wire firmly after you make the connection to confirm it is tight.
Use screened cable for all signal and control wiring and connect the screen to earth at the
destination end only. Route signal cabling away from power cabling and relay switching
cabling, to avoid electrical noise interference.
U-Bracket
No bare wires exposed
Terminal screwdiver - 3mm blade
Strip back
5mm max.
Outside
enclosure
Inside
enclosure
Side view of meter
Detachable
connectors
125mm behind panel

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Connections
Alarm Lock Calib’n Lock
Common
Tare
Peak/Valley
Reset
Logic Inputs PowerSignal I/P & Excitation
Excitation -
Sense-
Sig-
Sig+
Sense+
Excitation +
4 wire connection
for short cable runs
Cable and/or zener
barrier resistance
N L
- +
Looking for high performance?
See application notes on next page, for hints
on getting the best performance from your
weighing system.
Remote
contacts
(5V DC 1mA)
!
Warning:
Disconnect all power before
exposing the rear of the meter
Millivolt input only?
Link Exc+ to Sense+ and link Exc- to Sense-
Set Sig- to 5V using 2 x 10K resistors.
!
Class II Installation
Not used
Cable and/or zener
barrier resistance must
not cause the excitation
voltage to drop below
4V. NB If using galvanic
isolation barriers,
connect 10K from
terminal 2 to terminal 3
and 10K from terminal 3
to terminal 5 to maintain
the input signal within
the common mode
range of the excitation
sense circuit.
Fuse Switch
Circuit breaker
Power
Customer-supplied disconnection
and overload protection devices
1 2 3 4 5 6 7 8 9 10 11 12 13
Important - Sense + and Sense - must always be referred to the excitation voltage. Never leave these terminals open.
1 2 3 4 5 6
- mV +
10K 10K

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Clean Earth
Installation hints for best performance
This section offers several suggestions which will help you get the best performance from
your weighing system.
Loadcells create very small signals which can easily be corrupted by electrical noise. These
steps will ensure you get the best possible performance from your meter.
1. Use good quality screened signal cable, with 3 twisted pairs. Belden 8777NH,
Belden 9503 and AlphaWire 6010C are good choices, available from many
electrical distributors.
2. Even if your loadcell is only a 4 wire device, we recommend you use 6 core cable
between the display and the loadcell, and wire as shown in the diagram opposite.
This will ensure that any resistance changes in your cabling, caused by changes
in temperature, will be cancelled.
3. Each pair should be dedicated to a signal function as shown opposite, for maximum
noise immunity. (One twisted pair for Excitation, one twisted pair for Sense, one
twisted pair for Signal) This will ensure that any electrical noise induced in the
cable is properly cancelled. Mixing functions carelessly amongst the twisted pairs
can actually worsen noise performance.
4. The cable should be routed away from noisy wiring and devices such as power
feeds from inverters, discharge-lighting cables, welder cabling etc, and should
preferrably be routed in a dedicated low voltage signalling/instrumentation conduit
or cable tray.
5. Screened cable should be earthed at the display end only.
6. All wires and screens coming out of the screened cable should be kept as short
as possible to minimise pickup of noise.
7. If you are using barriers, you should earth your screen as shown below, paying
particular care that you do not earth both ends of any run of of cable.NB If using
galvanic isolation barriers, connect 10K from terminal 2 to terminal 3 and 10K
from terminal 3 to terminal 5 on the display’s Sig. Input connector to maintain the
input signal within the common mode range of the excitation sense circuit.
Barriers
EARTH
Connect screen
to earth ONLY
at this end.
Connect screen
to earth ONLY
at this end.
Do not
connect
screen at
this end.
Do not
connect
screen at
this end.
Length of screened cable Length of screened cable
Loadcell
Hazardous Area Safe Area
Terminal 7
on logic
input
connector
Sig. Input L o g i c I n P o w e r
Displayconnections
Loadcell connections Barrier connections
123456

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4 Wire Loadcell
6 Wire Loadcell

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Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Easy or Advanced menu mode
You can choose from two menu modes.
1. Easy Mode - This limits the menu to the most commonly required features, in order
to make it less complex and easier to navigate. This is the default level.
2. Advanced Mode - This gives you access to all available menu features.
Each menu feature in this manual has a heading note to tell you whether it
is available in Easy or Advanced mode.
How to choose menu mode:-
Lockout Switch must be OFF
Press together briefly
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Press briefly
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Press to toggle
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Press to accept
1
2
3
4Done!
Each press of the DOWN
arrow, or UP arrow will
alternate between showing
Adv. or EASy
!
!
This feature is available in Easy and Advanced Modes
OFF
Circuit board ON
Press OK a few times, until you
see Adv. or EASy
Press OK to select your choice.

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Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Language Selection for user interface
You can select English or French menu prompts.
Lockout Switch must be OFF
Press together, briefly
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Display shows
UI Eng (Default)
for User Interface English
or
UI FrA
for User Interface French
1
2
3
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Done!
This feature is available in Easy and Advanced Modes
Press to toggle
Press to accept
OFF
Circuit board ON

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Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Display Brightness
You can adjust the display brightness at any time, provided the display is locked.
Lockout Switch must be ON
Press 3 seconds
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Press for 3 seconds
Display shows bright
Each press of the UP button will select a
new brightness level.There are 7
brightness levels to choose from.
(Default = Full brightness)
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Press to accept
1
2
3Done!
!
!Did you know, we make this display in two brightness versions?
Standard brightness for use inside, and Daylight Viewing for use outside
in direct sunlight. The Daylight Viewing version has suffix -DLV in its part
number.
This feature is available in Easy and Advanced Modes
OFF
Circuit board ON

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Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Meter Calibration Modes
You can choose from two main calibration methods.
1. Direct Calibration - this is when you connect the meter to your system and
make the meter read what you want it to, at 2 different points. This is the preferred
calibration method, because it allows you to calibrate the system as a whole.
2. Theoretical Calibration - this is when you type in the sensor’s theoretical
signal level at the bottom and top of itsrange and then type in the value the
display should show, for each signal level.
How to choose a calibration method:-
Lockout Switch must be OFF
Press 3 seconds
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Press to select dirECt or thEor
Display shows CAL Src then
dIreCt
or
thEor (Default)
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Press to accept
1
2
3
4
5
Done!
This feature is available in Easy and Advanced Modes
OFF
Circuit board ON

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Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Direct Calibration - Full Scale Setting
This is when you connect the meter to your system and make the meter read what
you want it to, at 2 different points. This is the preferred calibration method, because
it allows you to calibrate the system as a whole.
How to do direct calibration:-
If you have not done so before, please select Direct Calibration mode from
the previous page.
First we recommend you set the FULL SCALE calibration ...
Lockout Switch must be OFF
Display shows direCt followed
by SEt Hi
Press 3 seconds
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Press OK. Apply the highest
calibration signal you can achieve,
ideally 100% of system capacity.
You can use less, but you will get better
accuracy with higher signals.
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Press for 3 seconds
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
You can now set the display value you
want to see - use DIGIT to select each
digit in turn, and the UP or DOWN arrow
to increase or decrease each digit’s
value, as required.
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Press to accept
1
2
3
4
5
Press Set2 for 3 seconds. You can now
set your decimal point position using
the UP or DOWN buttons.
Press OK when done.
Done!
This feature is available in Easy and Advanced Modes
OFF
Circuit board ON

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Direct Calibration - Zero Setting
How to calibrate the ZERO point.
You can set Zero first, if you prefer, but you will not be able to change the decimal point
position in the ZERO calibration step.
This will not be an issue if your zero calibration reading is 0, but may become
confusing otherwise.
When you have finished your calibration, please remember to put the calibration
lockout switch in its ON position, to protect your settings.
OK
Max/Min Reset
Lockout Switch must be OFF
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Press OK. Apply the lowest
calibration signal you can achieve,
ideally 0% of system capacity.
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
You can now set the display value you
want to see - use DIGIT to select each
digit in turn, and the UP or DOWN
arrow to increase or decrease each
digit’s value, as required.
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Press to accept
1
2
3
4
Done!
This feature is available in Easy and Advanced Modes
Display shows direCt
followed by set Lo
OFF
Circuit board ON
Set1 Set2 Output Alarms
Digit
Press 3 seconds

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Max/Min Reset
Theoretical Cal. - Decimal Point & Full Scale
This is when you type in the sensor’s theoretical signal level at the top and bottom of
its range and the value to display, for each signal level.
If you have not done so before, please select Theoretical Calibration
mode from the Meter Calibration page AND choose whether your
input is current or voltage.
First we recommend you set the FULL SCALE calibration ...
Lockout Switch must be OFF
1
2
3
4
5
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
You can now specify the maximum
input signal. Use DIGIT to select each
digit in turn, and the UP or DOWN
arrow to increase or decrease each
digit’s value, as required. eg set
20.0000 if your high input is 20mV
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Press to accept
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Display now shows rd Hi briefly. You
can now specify the maximum reading
and decimal point position. Press Set2
button for 3 seconds to set decimal point
position. Use up and down arrows to
move the decimal point and press OK
when done. Then, use DIGIT to select
each digit in turn, and the UP or DOWN
arrow to increase or decrease each
digit’s value, as required. Set 100.000 if
your display range is 0 to 100.000
Set1 Set2 Output Alarms
Digit OK
Max/Min Reset
Press to accept
Done!
!
!
This feature is available in Easy and Advanced Modes
Default scaling is
0-40mv = 0-40.000
Display shows theor
OFF
Circuit board ON
Set1 Set2 Output Alarms
Digit OK
Press 3 seconds