LTH Electronics MXD70 Series User manual

 
MXD70 SERIES
Multi-parameter Monitor
Setpoints, Current Outputs,
And Digital Inputs
Configuration Guide

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reface

MXD70 Setpoints, Current Outputs,
and Digital Inputs Configuration Guide
- 1 -
Preface
Product warranty
The MXD70 Series has a warranty against defects in materials and workmanship for three
years from the date of shipment. During this period LTH will, at its own discretion, either
repair or replace products that prove to be defective. The associated software is provided
‘as is’ without warranty.
Limitation of warranty
The foregoing warranty does not cover damage caused by accidental misuse, abuse,
neglect, misapplication or modification.
No warranty of fitness for a particular purpose is offered. The user assumes the entire risk of
using the product. Any liability of LTH is limited exclusively to the replacement of defective
materials or workmanship.
Disclaimer
LTH Electronics Ltd reserves the right to make changes to this manual or the instrument
without notice, as part of our policy of continued developments and improvements.
All care has been taken to ensure accuracy of information contained in this manual.
However, we cannot accept responsibility for any errors or damages resulting from errors
or inaccuracies of information herein.
Copyright and trademarks
All rights reserved. Translations, reprinting or copying by any means of this manual,
complete or in part or in any different form requires our explicit approval.
MXD70 is a trademark of LTH Electronics Ltd
First edition: June 2011
LTH Electronics Ltd
Chaul End Lane
Luton Telephone : [phone]
Bedfordshire Fax : [phone]
LU4 8EZ email : [email protected]
England Web : www.lth.co.uk

reface
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MXD70 Setpoints, Current Outputs, and
Digital Inputs Configuration Guide
Manufacturing Standards
Electromagnetic compati ility
This instrument has been designed to comply with the standards and regulations set down
by the European EMC Directive 2004/108/EC using BS EN 61326: 2006
Safety
This instrument has been designed to comply with the standards and regulations set down
by the European Low Voltage Directive 2006/95/EC using BS EN 61010-1: 2001
Quality
This instrument has been manufactured under the following quality standard:
ISO 9001:2008. Certificate No: FM 13843
Note: The standards referred to in the design and construction of LTH products are those
prevailing at the time of product launch. As the standards are altered from time to time, we
reserve the right to include design modifications that are deemed necessary to comply
with the new or revised regulations.

Contents
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MXD70 Setpoints, Current Outputs,
and Digital Inputs Configuration Guide
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Contents
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reface.........................................................................................................................1
Contents .....................................................................................................................3
Setpoints ....................................................................................................................5
Input Source........................................................................................................6
Trigger...................................................................................................................6
Mode......................................................................................................................9
Hysteresis.......................................................................................................... 10
Setpoint Dose Alarm..................................................................................... 11
Setpoint roportional Mode...................................................................... 14
Setpoint Alarm Mode................................................................................... 16
Setpoint Cleaning Mode ............................................................................. 17
Current Outputs ................................................................................................... 21
Current Output Calibration........................................................................ 24
Resetting the current Output user Calibration................................... 26
Digital Inputs ......................................................................................................... 29
Offline................................................................................................................. 30
Clean................................................................................................................... 31
Range Changing............................................................................................. 31
Switch Setup.................................................................................................... 31
Calibration ........................................................................................................ 32
CI ........................................................................................................................ 32
olarity ............................................................................................................... 32
Simulate Channels............................................................................................... 33
Index ......................................................................................................................... 36
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Contents
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MXD70 Setpoints, Current Outputs, and
Digital Inputs Configuration Guide
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Setpoints
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MXD70 Setpoints, Current Outputs,
and Digital Inputs Configuration Guide
- 5 -
Setpoints
Setpoints
The MXD70 Series can be fitted with up to six setpoint relays designated 1 – 6. Setpoints 1 – 4 are
“Change Over” relays while 5 – 6 are “Normally Open” relays. Each individual setpoint can be assigned
to any one of the Sensor Input Channels. The Setpoint/Relays menu contains all of the necessary setup
functions to configure the setpoint sources. The instrument indicates the status of the enabled
setpoints by means of 6 LED indicators located above the main instrument display. A lit LED indicates
that the setpoint / Relay is active. If the LED is blinking it indicates a dose alarm has occurred on that
setpoint.
Main Menu
From the front screen press the menu button to
show the main menu options and select
Setpoint/Relays.
/ – Select Option
EXIT – Return to Front Screen
– Enter Option
Setpoints / Relays Setup
Select the Setpoint you wish to edit.
/ – Select Option
EXIT – Return to Main Menu
– Enter Option
Channel
The “Sensor Input Channel” the setpoint is to be
associated with. The channels shown depend on the
configuration of the instrument. For more
information regarding the Unit Alarm option see the
setpoint alarm mode section.
To disable the setpoint select the disabled option.
This will turn off the setpoint and clear any error
messages associated with it.
/ – Select Option
EXIT – Cancel
– Save Selection

Setpoints
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MXD70 Setpoints, Current Outputs, and
Digital Inputs Configuration Guide
Setpoints
Input Source
The input source for the selected setpoint.
Available options vary depending on whether the
appropriate source is enabled in the channel’s setup
menu.
Alarm option – see the setpoint alarm mode section.
Cleaning option – see the setpoint cleaning mode
section (not available on all input card types.)
/ – Select Option
EXIT – Cancel
– Save Selection
Range
The setpoint’s operating range.
This is only available if the associated Sensor Input
Channel has a range option and is set to Auto in the
channel’s setup menu.
The available options will depend on the cell
constant of the sensor used, consult the input card’s
manual for more information.
/ – Select Option
EXIT – Cancel
– Save Selection
Trigger
The setpoints can be configured to trigger in the
following ways:
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High
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Low
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Band
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
Latch High
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Latch Low
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US (Conductivity Only – see Conductivity manual
for information)
/ – Select Option
EXIT – Cancel
– Save Selection
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Setpoints
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MXD70 Setpoints, Current Outputs,
and Digital Inputs Configuration Guide
- 7 -
Setpoints
High
The setpoint will activate when the associated Sensor
Input Channel’s input becomes greater than the
setpoint level.
Low
The setpoint will activate when the associated Sensor
Input Channel’s input becomes less than the setpoint
level.
Band
The setpoint will activate when the associated Sensor
Input Channel’s input is either greater than the
setpoint high level or less than the setpoint low level.
Latch Hi
The setpoint will activate when the associated Sensor
Input Channel’s input is greater than the setpoint
high level and will remain active until the input falls
below the setpoint low level. It will then remain
inactive until the input level rises above the setpoint
high level.

Setpoints
- 8 -
MXD70 Setpoints, Current Outputs, and
Digital Inputs Configuration Guide
Setpoints
Latch Low
The setpoint will activate when the associated Sensor
Input Channel’s input is less than the setpoint low
level and will remain active until the input rises
above the setpoint high level. It will then remain
inactive until the input level falls below the setpoint
low level.
High Value
The Setpoint High value.
/ – Increase / Decrease Digit


 – Select Next Digit
EXIT – Cancel
– Save Value
Low Value
The Setpoint Low value.
/ – Increase / Decrease Digit


 – Select Next Digit
EXIT – Cancel
– Save Value