Micron meters Magna Installation instructions

Rear case screws - please note

The rear panel is held in place with finger-screws, which

only need to be gently tightened.

Do not use tools to tighten or loosen the screws, as

this could cause damage to the internal threads.

Caution: Risk of electrical shock if this instrument is not properly installed.

Caution: Read the whole manual before you install this display.

MAGNA 4-Digit Large-Digit

Temperature Indicator / Controller

Installation & Operating Manual

8.8.8.8.

MICRON METERS

[email protected]

www.micronmeters.com

.Warranty

We warrant our products against defects in materials or workmanship for a period of one

year from the date of purchase.

In the event of a defect during the warranty period, the unit should be returned, freight (and

all duties and taxes) prepaid by the Buyer to Micron or to the authorized distributor from

whom the unit was purchased.

Micron or the distributor, at their option, will repair or replace the defective unit. The unit

will be returned to the Buyer with freight charges prepaid by the distributor.

LIMITATION OF WARRANTY

The foregoing warranty shall not apply to defects resulting from:

1. Improper or inadequate maintenance by the buyer.

2. Unauthorized modification or misuse.

3. Operation outside the environmental specification of the product.

4. Mishandling or abuse.

The warranty set forth above is exclusive and no other warranty, whether written or oral is

expressed or implied. We specifically disclaim the implied warranties of merchantability

and fitness for a particular purpose.

EXCLUSIVE REMEDIES

The remedies provided herein are the buyer’s sole and exclusive remedies.

In no event shall we be liable for direct, indirect, incidental or consequential damages

(including loss of profits) whether based on contract, tort or any other legal theory.

7-8

12-13

14-15

16-17

21-22

35-37

See Alarm manual *

See Analog manual *

See Serial manual *

Warranty

Warnings

Introduction

General Description

Connecting Your Display

Suspension Mounting Dimensions

Wall Mounting Dimensions

Panel Mounting Dimensions

MAGNA Connections

Installation Hints for Best Performance

Connection of Micron Transmitter

Language Selection for User Interface

Display Brightness

Display Modes

MAGNA Serial Data settings

MAGNA Logic Input Functions

MAGNA Logic Input connections & Front Buttons

MAGNA Factory defaults

Scale Factor adjustment

Offset Adjustment

Menu Timeout Adjustment

Reverse / Mirror Display Setting

Bootup Routine Choices

Multi Memory MEM option

Error Codes and Fault Finding

How to Install Option Boards

WEEE

Equipment Specifications

Record of Revisions

ASCII Hex codes and displayed characters

Signal Levels

Special data commands

Separate manuals for options

Alarm option settings

Analog output option settings

Serial output option settings

Real Time Clock setting See Serial manual *

* Need a manual urgently? You can download manuals from our website.

Contents

Warnings

Please carefully read this manual and all warnings. Install the display 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 display.

Connect the display according to current IEE regulations, IEC61010 &

NFPA:70 National Electric Code in USA.

Power supplies to this equipment must have anti-surge (T) fuses rated at 1A for

230V supply, 2A for 110V supply, 5A for 48VAC supply or 10A for 11-30VDC.

Don’t touch any circuitry after you have connected the display, because there may

be lethal voltages on the circuit board.

Do not apply power to the display if its case is open.

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 display’s case and window with a soft damp cloth. Only lightly dampen

with water. Do not use any other solvents.

Rear case screws - please note

The rear panel is held in place with finger-screws, which

only need to be gently tightened.

Do not use tools to tighten or loosen the screws, as

this could cause damage to the internal threads.

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 1-year warranty. We will put right or replace any display 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.

General Description

MAGNA temperature displays consists of a MAGNA RS485 serial input large digit display

and a Micron MLT series RTD or thermocouple transmitter with an RS485 output. Use of a

digital RS485 interface ensures that the displayed reading is always the same as the

transmitter reading. It allows the Micron transmitter to be installed inside the MAGNA display

housing or to be installed remotely with long RS485 cable runs. Such runs allow wide separation

between the display and the temperature source, while keeping the sensor wires short.

The Micron RTD transmitter, if selected, can be set up for four RTD types: Pt100 for DIN

alpha of 0.00385, Pt100 for ANSI alpha of 0.003902, nickel Ni120, or Copper Cu10. The

Micron thermocouple tansmitter, if selected, can be set up for seven thermocouple types: J,

K, T, E, N, R, S. Both transmitters can be set for °C or °F, and 1° or 0.1° resolution. A

resolution of 0.1° is normally reserved for RTDs. When you specify the sensor type, °C

or °F, and 1° or 0.1° resolution, the system is shipped ready to run for your application.

Available digit heights are 57 mm (2-1/4"), 102 mm (4.0"), 150 mm (5.9"), and 200 mm

(7.9"). For every 10 meters of viewing distance required, use 1” of digit height.

Optional alarm relay outputs, analog output, and a serial data output modules can be ordered

and are programmable via the display’s front panel keypad. An optional 4-wire remote

pushbutton unit allows the display to be programmed while it is mounted in an inaccessible

location.

Other options are: 100-240 VAC or 11-30 VDC power; normal of daylight viewing display

brightness; wall mount, suspension mount or panel mount; and a heater for operation down to

-25°C.

MAGNA displays must be installed fully assembled, and must be installed according to local

electrical installation rules.

When properly installed, and provided they have been ordered with cable glands exiting the

lower surface of the case, they provide environmental protection to IP65 / NEMA4X from all

sides.

Safety

Obey all safety warnings in this manual, and install the display according to local wiring and

installation regulations. Failure to follow these guidelines may cause damage to the display,

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 display should fail.

Caution: There is a risk of electrical

shock if this display is not properly installed

Caution: Risk of danger: Read the whole

manual before you install this display

Connecting Your Display

MAGNA temperature displays are shipped with a built-in or external Laurate LTtemperature

transmitter. As specified in the order, the transmitter will be built-in or external, be set up for a

specific RTD or thermocouuple type, for display in °C or °F, and for 1° or 0.1° resolution. 0.1°

resolution should only be used for RTDs. An analog output option, if ordered, will be set up for

4-20 mA, 0-10V or -10 to +10V output, and for upper and lower temperature limits as specified

in the order.

To wire the display, insert circular cables through the provided M12 cable compression glands.

These are rated for round cables with a diameter of 3.0 to 6.5 mm (1/8” to 1/4”). When the

outer nut is tightened by hand, seals inside the gland are compressed against the cable,

thereby making a hermetic seal.

For power, insert a 6.5 mm (1/4”) diameter round cable through one of the glands, and connect

it to the unterminated power cord insid the display using twist-on wire connectors.

For a thermocouple temperature signal, run a round cable through an available gland, and

connect the sensor wires to the Micron transmitter as illustrated below:

Connecting Your Display (continued)

For an RTD temperature signal, run a round cable through an available gland, and connect

the sensor wires to the Micron transmitter as illustrated below.

In 2-wire hookup, the meter senses the com-

bined voltage drop across the RTD and both lead

wires. The voltage drop across the lead wires can

be measured by shorting out the RTD during meter

setup, and this voltage is then automatic-ally

subtracted from the combined total. However,

changing resistance of the lead wires due to

ambient temperature changes will not be com-

pensated.

In 3-wire hookup, the meter senses the com-

bined voltage drop across the RTD plus two

excitation leads. It also senses the voltage drop

across one excitation lead, and then subtracts twice

this voltage from the combined total. This technique

effectively subtracts all lead resistance and

compensates for ambient temperature changes if

the two excitation leads are identical.

In 4-wire hookup, different pairs of leads are used

to apply the excitation current and sense

the voltage drop across the RTD for ratiometric

operation, so that the IR drop across the excitation

leads is not a factor.

For more informatiin on Micron thermocouple and RTD transmitters, refer to https://

www.laurels.com/transmitter-thermocouple.php and https://www.laurels.com/transmitter-

rtd.php, also the user manual at https://www.laurels.com/downloadfiles/LT-manual-pulse-in.pdf

Suspension Mounting Dimensions

Display Format X mm H mm W mm Y mm

2” 4 digit numeric 219.5 154.5 376 249.5

4” 4 digit numeric 374 195.5 434 404

6” 4 digit numeric 520 246 580 550

8” 4 digit numeric 690 290 750 720

77 mm

H mm

X mm

Plan View

Short-drop mounting holes

Long-drop mounting holes

Y mm

15mmO

6.35mmO 15mmO

6.35mmO 25mm

157.5mm

207.5mm

220mm

8.8.8.8.

W mm

Cable Glands. Number of glands

depends on installed options.

H mm

25mm

You can order these displays with the cable

glands in the bottom surface (as shown) the

rear, or top.

Rear glands allow you to mount the display on

top of a cubicle, using the brackets shown.

M8X12 S.S. bolt

Spring washer

Flat washer

Bracket

Rubber washer

Display boss M8 female *

Case

Detail showing bracket

hardware fitting sequence

*Do not use longer bolt threads than

12mm , or you will fracture the female boss

and the case will no longer be sealed.

Wall Mounting Dimensions

X mm

60 mm 80 mm

72.5 mm

60 mm

98 mm

60 mm

123456789012345

Wall

H mm

The 4 bracket holes are 5.2mm diameter

22mm

W mm

25mm

Cable Glands. Number of glands

depends on installed options.

Display Format X mm H mm W mm Y mm

2” 4 digit numeric 219.5 154.5 376 249.5

4” 4 digit numeric 374 195.5 434 404

6” 4 digit numeric 520 246 580 550

8” 4 digit numeric 690 290 750 720

You can order these displays with the cable

glands in the bottom surface (as shown) the

rear, or top.

Rear glands allow you to mount the display on

top of a cubicle, using the brackets shown.

M8X12 S.S. bolt

Spring washer

Flat washer

Bracket

Rubber washer

Display boss M8 female *

Case

Detail showing bracket

hardware fitting sequence

*Do not use longer bolt threads than

12mm , or you will fracture the female boss

and the case will no longer be sealed.

8.8.8.8.

Panel Mounting Dimensions

A mm

W mm

B mm

Neoprene

gasket

Neoprene

gasket

Bezel

H mm

25mm

Cable glands

8mm

67mm

Display Format X mm H mm W mm Y mm

2” 4 digit numeric 219.5 154.5 376 249.5

4” 4 digit numeric 374 195.5 434 404

6” 4 digit numeric 520 246 580 550

8” 4 digit numeric 690 290 750 720

M8 x 15 bolt

Spring washer

Flat washer

Wall Bracket

M8 x 20 bolt, gasket compresser

Case

Detail showing bracket hardware fitting sequence

Fit first

Fit last

Panel cutout dimensions

A+3mm(h) x B+3mm(w) Panel

Bezel

Neoprene gasket

8.8.8.8.

Demand

Common

Data A+/Rxd

Data B- /Txd

nil

MAGNA Connections

Alarm Lock

Calib’n Lock

Common

CC.1

CC.2

CC.3

Logic Inputs Power

Signal Input & Excitation

- +

Remote

contacts

(5V DC 1mA)

Earth

1 2 3 4 5 6 7 8 9 10 11 12 13

Processor and signal input board

Power Supply board

Internal power link, installed by the factory

Fuse

Earth

- or N

+ or L

- +

Earth

Fuse Switch

Customer-supplied disconnection

and overload protection devices

Circuit breaker

Power

Inside the enclosure Outside the enclosure

Warning:

Disconnect all power before

removing the rear of the display

There is a range of possible locations for the input board, output board and power supply

boards. Their locations depend on the height of digits, number of digits, brightness of digits

and any installed options. Because the permutation of possible locations is large, we will not

describe the location of boards within the display, but simply identify the connectors and their

functions on each board, below ...

OK Digit

MAGNA Connections

Serial Data

output option

0, 2 or 4 Alarm Relay

output options

- +

AL4 AL3 AL2 AL1

Comm

Enable

TxD

RxD

Comm

Enable

Rated 2A 250VAC Resistive

Enable is used in mode C1

to activate or de-activate the

RS232 or RS485 serial output.

Connect to Comm to continually

transmit data.

27 26 25 24 23 22 21 20 19 18 17 16 15 14

RS485

RS232

Output option board (if fitted)

Analog

output

option

Button function

Remote buttons

Display’s front panel

buttons enabled/disabled

by jumper or connection

Remote programming button connector

On one of the display boards, you will find a 7 way connector, to which you can wire remote

programming buttons, to allow adjustment of the display’s settings when the display is

inaccessible.

You can also enable or disable the display’s front panel buttons, either by a remote contact

closure, or by an on-board push-on jumper switch, which is located near to the remote

button connector. When the contact is closed, or the push-on switch fitted, the front buttons

are enabled.

Connectors and options

Connectors may be

present even if output

options are not installed.

Refer to rating label to see

installed options.

Warning:

Disconnect all power before

removing the rear of the display

Rear case screws - please note

The rear panel is held in place with finger-screws, which

only need to be gently tightened.

Do not use tools to tighten or loosen the screws, as

this could cause damage to the internal threads.

Close contact or fit jumper to

enable front panel buttons

Output

Set2

Set1

Common

Enable

Installation Hints for Best Performance

This section offers several suggestions which will help you get the best performance from

your system.

RS232 and RS485 use comparitively small signals which can easily be corrupted by the

potentially high level of electrical noise which can be created by electrical machinery such as

motors, welding systems, discharge lighting, AC power inverters and solenoids. These steps

will ensure you get the best possible performance from your system.

RS232 has limited capability over long cable distances, due its low driving power (which

causes the signal to reduce in level as cable length increases) and single ended signal (which

is prone to interference by local electrical noise) , as shown below.

Maximum recommended cable distances if using LOW

capacitance screened cable such as CAT5 cable:

Baud Rate RS232 RS485 or RS422

1200 50 m (164 ft) 1200 m (3900 ft)

9600 20 m (66 ft) 150 m (500 ft)

19200 10 m (33 ft) 75 m (250 ft)

38400 5 m (16.4 ft) 30 m (100 ft)

115200 2 m (6.6 ft) 10 m (33 ft)

1. Use good quality screened signal cable, with twisted pairs. Screened twisted pair

CAT5 cable is ideal. The screen should be earthed at the display end only.

2. If you are using multi-pair twisted cable, each pair should be dedicated to a single

display as shown opposite, for maximum noise immunity.This will ensure that any

electrical noise induced in the cable is properly cancelled. Mixing destinations

carelessly amongst the twisted pairs can easily corrupt data.

3. 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.

4. If you want to simulate data, a useful free terminal, with good flexibility is

RealTerm, available from http://sourceforge.net/projects/realterm/

Connect screen

to earth ONLY

at this end.

Do not

connect

screen at

this end.

Length of screened cable

Clean Earth

Signal Input

Logic Input

Power Input

Display connections

Sender connections

RS232 or

RS485

transmitter

Display 1

Display 2

Display 3

Data 1

Data 2

Data 3

When using multi-core screened cable to connect several displays to several data sources, please be sure to use one twisted

pair for each display and sensor.

Do NOT use a wire from one pair for signal positive and a wire from another pair for signal negative, as this will prevent the

twisted cables form cancelling any induced electrical noise, and can couple noise from one source to another.

Displays

Data Sources

Connection of Micron MLT Transmitter

MAGNA large-digit temperature displays consist of an a MAGNA RS485 serial input display

and a Micron series RS485 output LT series transmitter. These two components are

integrated as a system at the factory. For reference purposes, this page describes how they

are interconnected via cabling and software. This description applies to all available Micron

MLT series transmitters: process, load cell, temperature, DC, RMS, frequency,

totalizer, stopwatch, timer, phase angle, duty cycle, power factor, and more -- not just

temperature.

Program the MAGNA display from its front panel:

1. Set the lockout switches to OFF (up, away from the computer board).

2. Power up the display and load the meter’s default settings by pressing all 4 push-

buttons until dEFS ndEFS n

dEFS ndEFS n

dEFS n appears on the display.

3. Press the UP button so you see dEFS YdEFS Y

dEFS YdEFS Y

dEFS Y and press the OK button.

4. Press and hold the two left push buttons on the front of the unit for 3 seconds.

5. Use the OK key to advance to each menu. Set the MAGNA display as follows:

Ad.00Ad.00

Ad.00 Address 00, which is default if not addressing.

S.C.00S.C.00

S.C.00 Default start character is hex 00.

E.C.0dE.C.0d

E.C.0d End character is 0d (carriage return)

Baud 9600Baud 9600

Baud 9600 Set baud rate to 9600, which is default for LTtransmitter.

BnlBnl

Bnl Set data format to 8 data bits, no parity, 1 stop bit.

t.r.05t.r.05

t.r.05 Time to reply in mS following a request.

t.c.00t.c.00

t.c.00 Time in mS between each character.

to.03to.03

to.03 Timout in seconds (3S), after which display shows - - - -

5P.005P.00

5P.00 Start position for editing.

dL.00dL.00

dL.00 Data length for editing

dddd.dddd.

dddd. Decimal point position for alarms.

dP.AdP.A

dP.A

Set up the LT transmitter:

1. Jumper the LTtransmitter for half-duplex, RS485, as explained in the user manuals at

https://www.laurels.com/downloadfiles/LT-manual-analog-in.pdf (LTtransmitters for

temperature or other analog input types), or at https://www.laurels.com/downloadfiles/

LT-manual-pulse-in.pdf (for transmitters for pulse inputs).

2. Program the LTtransmitter with Instrument Setup Software for Continuous mode, 9600

baud.

3. Connect the LTtransmitter to the MAGNA display as follows:

LT to MAGNA

4, 5 to 6

3to 2

1, 2 to 3

Data connection to LTtransmitter

Connector details, MAGNA (left) and LTtransmitter (right)

Data connection to MAGNA RS485 input port (upper left)

Set1 Set2 Output Alarms

Digit OK

Max/Min Reset

Language Selection for User Interface

Lockout Switch must be OFF

Press together, briefly

Set1 Set2 Output Alarms

Digit OK

Max/Min Reset

For 4 digits, display shows

LEngLEng

LEng (Default)

for User Interface English

LFrALFrA

LFrA

for User Interface French

Set1 Set2 Output Alarms

Digit OK

Max/Min Reset

Done!

Press to toggle

Press to accept

OFF

Circuit board ON

!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.

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

Set1 Set2 Output Alarms

Digit OK

Max/Min Reset

Press to accept

Done!

OFF

Circuit board ON

For 4 digits, display shows briLbriL

briLbriL

briL

Each press of the UP button selects

a new brightness level.There are 7

brightness levels to choose from.

(Default = Full brightness)

Set1 Set2 Output Alarms

Digit OK

Max/Min Reset

Display Modes

You can choose from three operating modes.

Lockout Switch must be OFF

Press 3 seconds

Set1 Set2 Output Alarms

Digit OK

Max/Min Reset

Press to select

For 4 digits, display shows ASCASC

ASCASC

ASC , quanquan

quanquan

quan or q.totq.tot

q.totq.tot

q.tot

Set1 Set2 Output Alarms

Digit OK

Max/Min Reset

Press to accept

Done!

OFF

Circuit board ON

ASCIIASCII

ASCII (4 digits) or ASCIIASCII

ASCIIASCII

ASCII (6 digits) is used for

any application where non-numeric characters

need to be displayed. You can not have alarms,

analog output, tare, peak, valley or any mathe-

matical functions with this mode.

quanquan

quan (4 digits) or quantquant

quantquant

quant is used for any

numeric display work which needs alarms,

analogue output, tare, peak, valley or mathe-

matical functions.

q.totq.tot

q.tot (4 digits) or is used in applications

where you want to sum values, for example to

add together ingredient weights to get a

combined weight.

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