London electronics Maxi-int2-l mk.2 User manual

1

Document Ref:pm65\manuals\INTUITIVE_L_MkII Revision:14 Dated: 30 June 2009

Software version F00.14

Panel mounting load / weight indicator / controller

MAXI-INT2-L Mk.2

Connection details, scaling and general information

The New version of the INTUITIVE Family, with these extra benefits...

* 20 bit A/D convertor, higher precision, improved stability.

* 16 bit D/A convertor, greater resolution.

* Direct and theoretical linearisation features

* More comms options, for faster, more flexible data access.

* Extra ‘Factor and Offset’ feature, allows you to correct for Gravity, Container Tare etc.

* Simpler Alarm-Setpoint setting.

* More alarm setting modes, including in-band and out of band alarms.

* Summary Screen, lets you know which options are fitted, whenever you want to know.

* Wider operating temperature range

* Variable brightness feature

* Adjustable menu timeout delay, to suit new and experienced users.

* Online streaming step-by-step video guides at http://london-electronics.com

Ordering code: MAXI-INT2-L-X-X-X-X-X

MAXI- INT2 = Maxi-Int Mark 2 family

L= Loadcell model

Analogue output: 0=none, ANI=4-20mA, ANV=0-10V

Alarm outputs: 0=none, AL2= 2 relays, AL4=4 relays

Serial data: 0= none, 232=RS232, 485=RS485

Display colour: R=Red, G=Green

Power: AC=100-240V AC, DC=11-30V DC

!

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 Green, Near Hatch, Sandy, Bedfordshire SG19 1PU

Tel +44(0)1767 626444 Fax +44(0)1767 626446

www.london-electronics.com [email protected]

2

.

3

Alarm board configuration 27

Alarm programming 28-33

Analogue output 25-26

Application notes 43

Bootup routine 10

Brightness Adjustment 11

Button Functions 12-14

Calibration - introduction 16

Calibration method - direct, no linearisation 17

Calibration method - direct, with linearisation 22

Calibration method - theoretical, no linearisation 18-20

Calibration method - theoretical, with linearisation 21

Connections 9

Declaration of conformity 44

Filtering 15

General Description 6

Introduction 5

Keyboard timeout Delay 10

Language 10

Logic inputs 36-37

Mounting and Installation 7

Notes 38

Option boards- installing 24

Record of revisions 41

Reverse / Mirror / Heads-Up display 39

Serial output option 34-35

Specifications 40

Warnings 4

WEEE 42

Wiring Advice 8

Zero drift compensation 23

Contents

4

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

ONLYwhen 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.

!

5

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.

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.

6

General Description

The MAXI-INT2 Series of meters accept 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 the INT2 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

The MAXI-INT2 series of 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

7

Mounting and Installation - Class II

Install these 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

138mm +1mm -0mm

67.5mm +1mm -0mm

Panel cutout

123456789012345678901234567890121234567890123456789012345678901212345678901234567890123

Model: INT2X-X-X-X

Installing into front of panel

Remove the two screw clamp

assemblies and safely store them

for later fitting.

Front surface

of enclosure

Front surface

of enclosure

Front surface

of meter

Left side of meter case

Slide the meter, with gasket

into the panel cutout

Securing into the panel

Re-fit the screw clamp assemblies and

tighten the screws to firmly clamp the meter

in place.

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

Connectors

8

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 / 1.5mm2c.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.

No bare wires exposed

Terminal screwdiver - 3mm blade

Strip back

5mm max.

London

Electronics

Outside

enclosure

Inside

enclosure

Side view of meter

Detachable

connectors

150mm behind panel

9

Connections - INT-L

Alarm Lock

Calib’n Lock

Analog

o/p option

Serial Data

o/p option

0, 2 or 4 Alarm Relay

o/p options

Common

Tare

Peak/Valley

Reset

Logic Inputs PowerSignal I/P & Excitation

Excitation -

Sense-

Sig-

Sig+

Sense+

Excitation +

- +AL1 AL2 AL3 AL4

6 wire connection

for long cable runs

and zener barrier

installations.

4 wire connection

for short cable runs

Cable and/or zener

barrier resistance

NL

- +

B

A

Comm

Enable

TxD

RxD

Comm

Enable

RS232

RS485

Rated 2A 250VAC Resistive

Using Zener Barriers?

See application notes near

end of manual for details on

how to use Zener Barriers

with these meters.

Remote

contacts

(5V DC 1mA)

!

Warning:

Disconnect all power before

exposing the rear of the meter

Millivolt input only?

If you only want to measure a

mV signal, without full bridge,

link Exc+ to Sense+ and link

Exc- to Sense -

!

Connectors and options

Connectors may be present

even if output options are not

installed. Refer to rating label

to see installed options.

!

Class II Installation

Not used

Cable and/or zener

barrier resistance must

not cause the excitation

voltage to drop below

4V.

Fuse Switch

Circuit breaker

Power

Customer-supplied disconnection

and overload protection devices

10

Startup meter Settings

Menu Language Choice

Press the two right hand buttons briefly. You will see the User Interface language, which you

can change with the UP or DOWN buttons. Accept with OK

Next you will see ...

Meter Bootup routine

1. Activates all digit segments

2. Runs up and down brightness

settings

3. Displays model number and

installed options

4. Displays firmware version

5.Displays calibration audit

number.

6. Goes to meter mode

When you switch the meter on, it can run through a summary list of software version number,

installed options, calibration number etc.

You can choose from the 3 lists of bootup information to be displayed, the less information

you display, the sooner the meter will be available to operate.

Next you will see ...

Tare Memory

You can configure the meter to store any tared values on power down (Tare S), typical in

weighing applications, or you can clear the tare memory on power down (Tare N).

Next you will see ...

Lockout notes: Cal Lock switch = OFF when changing. Switch Cal Lock to ON after changing

UI EnG UI FRA

boot 0 boot 1 boot 2

1. Activates all digit segments

2. Runs up and down brightness

settings

3. Displays model number and

installed options

4. Goes to meter mode

1. Goes immediately to meter

mode

tare s tare n

London Electronics MAXI-INT2-L Mk.2 User manual

Popular Measuring Instrument manuals by other brands