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MXD73 

Quick Start Guide

23 mm

134 mm

25 mm Min 

For Cables 

And Connectors

Screw Clamp x 4

Gasket Seal

Output Option Card Connection Details

NO3 C3 NC3 NO4 C4 NC4

C6 NO6

C5 NO5

Output Option Connector

A

B

C

Relay 3

Normally 

Open

Contact

Relay 3

Common

Contact

Relay 3

Normally

Closed

Contact

Relay 4

Normally

Open

Contact

Relay 4

Common

Contact

Relay 4

Normally

Closed

Contact

Relay 5

Normally

Open

Contact

Relay 5

Common

Contact

Relay 6

Normally

Open

Contact

Relay 6

Common

Contact

Modbus A

Connection

(Inverting)

(Rx-/Tx-)

Modbus C

Connection

(0V Reference)

Optional

Modbus B

Connection

(Non-Inverting)

(Rx+/Tx+)

Modbus and 4 Relays Output Option Card Connection Details

NO3 C3 NC3 NO4 C4 NC4

Output Option Connector

E

F

Relay 3

Normally 

Open

Contact

Relay 3

Common

Contact

Relay 3

Normally

Closed

Contact

Relay 4

Normally

Open

Contact

Relay 4

Common

Contact

Relay 4

Normally

Closed

Contact

Current

Output B “+”

Current

Output “-”

(Common)

Current

Output “-”

(Common)

Current

Output C “+”

Current

Output E “+”

Current

Output F “+”

Current

Output “-”

(Common)

Current

Output D “+”

5 Current Outputs 2 Relays Output Option Card Connection Details

I-

-

-

I-

-

-

I-

-

-

B

C

D

NO3 C3 NC3 NO4 C4 NC4

C6 NO6

C5 NO5

Output Option Connector

B

C

D

Relay 3

Normally 

Open

Contact

Relay 3

Common

Contact

Relay 3

Normally

Closed

Contact

Relay 4

Normally

Open

Contact

Relay 4

Common

Contact

Relay 4

Normally

Closed

Contact

Relay 5

Normally

Open

Contact

Relay 5

Common

Contact

Relay 6

Normally

Open

Contact

Relay 6

Common

Contact

Current

Output B “+”

Current

Output D “+”

Current

Output C “+”

Current

Output “-”

(Common)

Output Option Card Connection Details.

Available Relays  and Current Outputs Vary Depending On Card Type

I-

-

-

Digital Input Connection Details

Digital Input Connector

G 1 2 3 4 5 6 7 8

Digital Input Connection Details

SD CARD

DIGITAL INPUTS

OUTPUT OPTION

CH3

CH2

CH1

C

C

C

H

H

H

1

2

3

A

B

C

CONDUCTIVITY

G 1 2 3 4 5 6 7 8

PH / REDOX

ECS CONDUCTIVITY

A A B B G E C

-

E E

R R

+

+ -

A A B B

A A B B

-

R R

D D

+

+ -

I- B+ C+ D+

0/4 - 20mA

-

-

I- B+ C+ D+

-

-

NO3 C3 NC3 NO4 C4 NC4

C6

NO6

C5 NO5

85-250V

A

-

+

L

+

N

-

1

2

0/4-20

mA
I-

E E E

A+

-

-

NO1 C1 NC1 NO2 C2 NC2

Power &

 Standard Outputs

Connector

Output

Option

Channel 2

 

Channel 3

Channel 1

Digital

Inputs

SD Card

Slot

89 mm Sq

Recomended Panel Cut-Out

 Should be 92mm X 92mm

Exact Instrument Configuration Depends 

Upon Ordered Specification

MXD73 Instrument Dimensions

The MXD73 Panel Mount Instrument is designed to be flushed mounted and sealed in a 

square cut-out in a panel, and is held in place with the four screw clamps provided

PO Box 1142

Pukekohe

Auckland

2340

New Zealand

Power & Standard Outputs Connection Details

CAUTION!

Always remove the main power from the system 

before any alterations to the wiring. Ensure that 

both power lines are isolated. Make sure that the 

power cannot be switched on by accident whilst the 

instrument is being connected. For safety reasons 

an earth connection must be made to the earth 

terminal of this instrument.

Local wiring and safety regulations should be strictly 

adhered to when installing this instrument. If the 

installation methods and cable types recommended 

in this guide are followed, then the instrument will 

achieve the levels of EMC protection as specified in 

the accompanying CD manual. 

Consult the serial label on the side of the 

instrument for supply voltage requirements.

Fitted Options-    Power Supply: 

  24V 

Output Option Card:      1-Current 2-Relays       Channel1:           Cond  

Channel2:           Cond                    Channel3:            Cond

 

 

 

  Mains 

 

 

    3-Current 0-Relays   

             pH/Redox 

 

        pH/Redox 

 

  pH/Redox

 

 

 

 

 

 

    3-Current 4-Relays   

             ECS   

 

        ECS 

 

 

  ECS

 

 

 

 

 

 

    5-Current 2-Relays   

             DO   

 

        DO 

 

                            DO

 

 

 

 

 

 

    Modbus 4-Relays 

 

             Aux mA IP 

 

        Aux mA IP 

 

  Aux mA IP 

 

 

 

 

 

 

 

 

 

             SS   

 

        SS 

 

 

  SS

Telephone: +64 (0) 9 234 4609

email: [email protected]

Web: www.quadbeam.co.nz

Power + Basic Outputs Connector

Relay 1

Normally Open

Contact

Relay 1

Common

Contact

Relay 1

Normally Closed

Contact

Relay 2

Normally Open

Contact

Relay 2

Common

Contact

Relay 2

Normally

Closed

Contact

NO1 C1 NC1 NO2 C2 NC2

Current 

Output “-”

(Common)

Current 

Output A ”+”

I- A+

-

-

Standard Outputs Connection Details

Power Supply

“Live” In

Power Supply

“Live” Out

(For Daisy Chaining)

Power Supply 

“Neutral In

Power Supply

“Neutral” Out

(For Daisy Chaining)

Protective Earth

(Must Be 

Connected)

Earth Earth

Power + Basic Outputs Connector

85V-265V AC/DC  Power Supply 

Connection Details

Power Supply 

“+” In

Power Supply 

“+”Out

(For Daisy Chaining)

Power Supply

 “-” In

Power Supply 

“-” Out

(For Daisy Chaining)

Protective Earth

(Must Be 

Connected)

Earth Earth

Power + Basic Outputs Connector

18V-32V AC/DC Power Supply 

Connection Details

MON 1 JUN 2009
09:56

CH1: 517.2 µS/cm TEMP1: 12.3°C
CH2: 9.64 pH
CH3: 23.3%

TEMP2: 25.0°C
TEMP3: 28.0°C

MAIN MENU

DIGITAL INPUTS

CHANNELS

EXIT

4-20mA OUTPUTS

CALIBRATION

SETPOINT / RELAYS

CONFIGURATION

CURSOR

FURTHER MENU 

PAGES BELOW

INSTRUMENT

READINGS

CURRENT

DATE / TIME

UNIT STATUS

FURTHER MENU 

PAGES ABOVE

MON 1 JUN 2009
09:56

CH1: 517.2 µS/cm TEMP1: 12.3°C
CH2: 9.64 pH
CH3: 23.3%

TEMP2: 25.0°C
TEMP3: 28.0°C

SETPOINT 1 SETUP

INPUT SOURCE:

RANGE:

TRIGGER:

HIGH VALUE:

MODE:

CHANNEL:

SENSOR

0 to 9.999 mS/cm

HIGH

7.500mS/cm

ON/OFF

EXIT

CHANNEL 1 (COND)

LOW

BAND

LATCH HIGH

TRIGGER

HIGH

LATCH LOW

CURSOR

ADDITIONAL

OPTIONS BELOW

OPTION POP-UP

MON 1 JUN 2009
09:56

CH1: 517.2 µS/cm TEMP1: 12.3°C
CH2: 9.64 pH
CH3: 23.3%

TEMP2: 25.0°C
TEMP3: 28.0°C

CHANNEL 1 SETUP

UNITS:

CELL CONSTANT:

RANGE:

TEMP INPUT SENSOR:

TEMPERATURE UNITS:

MODE:

SIEMENS(S/cm)

1.000

AUTO

PT1000

°C

EXIT

ON-LINE

SECURITY CODE

CODE

ENTER ACCESS

* * *

0

User Interface Overview

Scrolling Menu Layout

Front Layout

Main Menu Layout

Pop-Up Option Layout

Security Access Pop-Up

To protect the instrument setup 

from unauthorised or accidental 

tampering, a security access code 

system is present. This is 

implemented via the instrument’s 

menu system which operates in two 

modes, “locked” as indicated by a 

padlock     symbol and “unlocked” as 

indicated by a key     symbol. 

Fourth Issue September 2016

For configuration and calibration information please consult the operational manuals 

on the accompanying CD.

The default Access Code is: 1000

Front Screen

Current

Output

Bargraphs

Channels

Setup

Setpoint /

Relays Setup

4-20mA

Outputs Setup

Digital

Inputs Setup

Error

Messages

Live Trends

1, 2 & 3*

*Optional Extra

09:56

MON 1 JUN 2009

CH1:

517.2

 

µS/cm

i)

ii)

12.3

°C

A:12.28

mA

CH2:

9.64 

pH

i)

ii)

25.0

°C

-156mV

CH3:

23.3 

%

i)

ii)

28.0

°C

50.15 

µS/cm

MENU

ACK

DOSE ALARM

CAL

CURRENT DATE

UNIT STATUS

CURRENT TIME

CHANNEL

MESSAGES

CHANNEL SECONDARY 

READING ii 

CONTEXT SENSITIVE BUTTON FUNCTIONS

CHANNEL PRIMARY

READING

CHANNEL ID

CHANNEL SECONDARY

READING i

CHANNEL ALARM

STATUS

SETPOINT STATUS

LEDS

SETPOINT STATUS

LEDS

ALARM STATUS

LEDS

TANK 1

TANK 3

CHANNEL

LABEL

Suspended Solids Input Card Connection Details

 

Suspended Solids Input Connector

Cable Screen

Unit Earth Terminal

Green

Red

Black

White

Brown

Orange

Yellow

S10, S20, S40 Suspended Solids Sensor Cable

Connection Details

 Turbidity Input Connector

Cable Screen

Unit Earth Terminal

Green

Red

Black

White

Brown

Orange

Yellow

Blue

T30 Turbidity Sensor Cable

Connection Details

Turbidity Input Card Connection Details

116 mm

128 mm

F1

F2

F3

F4

F5

09:56

MON 1 JUN 2009

CH1:

517.2

 

µS/cm

i)

ii)

12.3

°C

A: 12.28mA

CH2:

9.64 

pH

i)

ii)

25.0

°C

-156mV

CH3:

23.3 

%

i)

ii)

28.0

°C

2.15Atm

MENU

CAL

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