Define Instruments Merlin Manuale utente

Soware

Setup (p9)

Soware

Install (p7)

Hardware

Install (p6)

›Universal input

›22V excitation

›Smart, simple, USB powered setup

›Optional relay outputs

›Optional isolated analogue output

›Designed for harsh environments

›Large 0.8" super-bright display

›Flexible 32 point linearization table

General Description

The Merlin universal digital indicator accepts

analogue inputs from a range of industrial

sensors, including: process, temperature,

ow, frequency, and voltage from 200mV to

300V. It features a wide range power supply

that suits both AC mains and 24V DC appli-

cations, and supplies the excitation required

for common sensors and transmitters.

The Merlin can be scaled into any engineer-

ing unit, and the result displayed on the

large 0.8” 4 digit super-bright LED display.

Auto ranging is available to increase the dy-

namic range of viewable data.

The Merlin R2A adds two Form A 3 Amp

relays for a variety of control and alarm

functions, and a 4-20mA active output for

retransmission to PLCs and SCADA systems.

The unit boasts a 1 minute setup time using

the Dene Toolbox conguration soware.

All functions and features are explained ex-

pertly in the dynamic sidebar help - perfect

for the novice starting out who can use it to

learn about industrial sensors and applica-

tions, or the expert who wants to save com-

missioning time.

The Merlin has been designed for harsh in-

dustrial environments. With NEMA 4X/IP65

sealed bezel and extensive testing of noise

eects to and beyond CE requirements, the

meter provides a tough and reliable applica-

tion solution.

Merlin

Universal Indicator

Quick start

Wiring (p12)

Contents ................................................. 2

Order Codes ............................................ 2

Safety Notices ......................................... 3

1 - Specications .................................... 3

1.1 - General Meter Specications .... 3

1.2 - Display ....................................... 4

1.3 - Case Dimensions ....................... 5

2 - Hardware Installation ...................... 6

2.1 - Installation Instructions ............ 6

2.2 - Installation Environment .......... 6

3 - Soware Installation ....................... 7

4 - Soware Conguration ................... 9

Using ToolBox

4.1 - Bridge Key ................................. 9

4.2 - Using ToolBox ......................... 10

4.3 - ToolBox Interface Overview ..... 11

5 - Wiring ............................................. 12

5.1 - Wiring Overview ..................... 12

5.2 - EMC Installation Guidelines .... 12

5.3 - Back Panel ............................... 13

5.4 - Power Supply .......................... 13

5.5 - Sensor Input ............................ 14

5.6 - Analogue Output .................... 14

5.7 - Relay Outputs .......................... 14

5.8 - User Input ............................... 14

6 - Input Types ..................................... 15

6.1 - Thermocouple Input ............... 15

6.2 - RTD Input ................................ 16

6.3 - NTC Input ................................ 17

6.4 - Current Input .......................... 18

6.5 - Voltage Input .......................... 19

6.6 - Digital Pulse ............................. 21

6.7 - Potentiometer Input ............... 22

6.8 - AC Current Sensor ................... 23

7 - Maintenance ................................... 24

7.1 - Calibration ............................... 24

7.2 - Troubleshooting ...................... 24

A - Appendix A - EMC Test Results ...... 25

B - Appendix B - Warranty & ............... 27

User's Responsibility

CONTENTS

ORDER CODES

Merlin MER Universal Indicator

Universal Voltage UV 24–250V AC / 19.5–250V DC

Output R2A 2 x relay outputs, 1 x analogue output (4–20mA)

Merlin Universal

Voltage

Output

(Optional)

MER – UV – R2A

SAFETY NOTICES

For your safety and the prevention of damage to the Merlin unit and other equipment con-

nected to it, please read and carefully observe all safety regulations and instructions. Use

of this instrument in a manner not specied by the manufacturer may compromise the protec-

tion provided by the instrument.

This instrument should not be used to directly drive valves, motors, or other actuators, unless

equipped with appropriate safeguards. It is the responsibility of the user to indentify potential

hazards that may arise in the event of a fault to unit, and implement safeguards for the pre-

vention of harm to persons or equipment.

CAUTION

Risk of electric shock

CAUTION

Risk of danger

For your safety, please read complete instructions prior to installation and operation of

the Merlin. In particular, consult this manual in all cases where hazard symbols are marked

on your Merlin unit, in order to understand and avoid potential hazards. The safety of any

system incorporating this unit is the responsibility of the assembler of the system.

1SPECIFICATIONS

1.1 - General meter specications

Power

Power supply 24–250V AC / 19.5–250V DC,

47–63Hz, 6VA max

Isolation 2,300Vrms for 1min to all inputs

and outputs

Analogue input

Input Universal (see Section 6 for full input

specications and wiring)

Excitation power

Excitation 22V ±10% (25mA max)

Relay output OPTIONAL

Type 2x Form A relays

Isolation to sensor and user input com-

mons 2,300Vrms for 1min

Working voltage 240Vrms

Contact rating

One Relay energized: 3amps @ 120/240V AC

or 28V DC (resistive load)

3amps max total current with both relays

energized

Life expectancy 100K cycles min at full load

rating

1.2 - Display

Digits 4 digit red LED, 0.8" (20mm),

7-segment characters

Display range -1999 to 9999

Annunciators 2x setpoint indicator

LEDs (R2A model only)

NEMA 4X/IP65 sealed front bezel

User input OPTIONAL

One user input is available on R2A model

only. It can be programmed as a manual

relay reset switch or a latching switch

Max continuous input 20V DC

Isolation to sensor input common

Not isolated

Analogue output OPTIONAL

Type 1x 4–20mA or 20–4mA DC

Isolation to sensor and user input com-

mons 1,400Vrms for 1min

Working voltage 125V

Max output drive 20mA (600Ω max load at

12V DC)

Accuracy/repeatability 0.05% of FSO

Resolution 1μA

Temperature dri 30ppm/°C typical

Powered Self-powered (active)

Environmental conditions

Operating humidity 5–85%RH max

(non-condensing)

Operating temperature -10 to 50°C

Storage temperature -20 to 60°C

Altitude Up to 2,000m

Certications & compliances

EN 61326-1 Immunity to Industrial Locations

Emission CISPR 11 Class A (EN 61326)

Safety requirements for electrical equip-

ment for measurement control, and labora-

tory use:

EN 61010-1 General Requirements

EN 61010-2-030 Particular Requirements

for Testing and Measuring Circuits

NEMA 4X/IP65 Enclosure rating (face only)

Construction

Panel mount enclosure Rated for NEMA

4X/IP65 outdoor use. Installation Category

II, Pollution Degree 2. Flame resistant. Panel

gasket and mounting clips included.

Dimensions 48H x 95W x 62D (mm)

Cutout area 45x92mm ±.5 (1.77x3.62" ±.02)

Space behind panel 80mm (3.15") minimum

space required behind panel (includes space

for connectors/wiring)

Weight 195g (6.87oz)

1.3 - Case dimensions

95mm (3.74")

107mm (4.21")

91mm (3.58")

80mm (3.15") minimum

depth required behind panel

62mm (2.44")

22mm

(0.87")

4mm (0.16")

(1.89")

(1.73")

Connectors

& wiring

2HARDWARE INSTALLATION

2.1 - Installation instructions

The Merlin is designed to be mounted into

an enclosed panel, and meets NEMA 4X/

IP65 requirements when properly installed.

A Prepare the Panel Cutout to 92x45mm

±.5 (3.62x1.77" ±.02) as shown below.

B Remove the Mounting Clips from the

Merlin unit.

C Slide the Panel Gasket over the rear of

the unit to the back of the Bezel.

D From the front of the panel, insert the

Merlin into the Panel Cutout. Holding

the unit in place, engage the Mounting

Clips so that the tabs snap into place

over the notches on the case.

E To achieve a proper seal, tighten the

Screws evenly until the unit sits rmly

against the panel (torque to approxi-

mately 70N-cm [6.2 in-lbs]). Do not over-

tighten the screws.

Panel Bezel

Panel

Gasket

Mounting

Clips

Screws

92mm ±.5

(3.62″ ±.02)

45mm ±.5

(1.77″ ±.02)

Panel Cutout

2.2 - Installation environment

The Merlin should be installed in a location

that does not exceed the maximum operat-

ing temperature, and at a safe distance from

other devices that generate excessive heat.

The installation environment should provide

good air circulation to the unit.

The bezel, plastic casing and product label

may be cleaned, if required, using a so,

damp cloth and neutral soap product.

Continuous exposure to direct sunlight

should be avoided, as this may accelerate

the aging process of the bezel.

3SOFTWARE INSTALLATION

ToolBox oers a smart, no-fuss setup experience for your Merlin universal indicator. It features

USB powered programming (no power supply required!) and has been designed to simplify

and speed up conguration.

You must install ToolBox before connecting the Merlin to your computer. If you have already

connected the meter using the Bridge Key, please disconnect it before continuing.

A Download the latest version of ToolBox from

www.deneinstruments.com/toolbox

For ease of access, we recommend saving the install le on your desktop. If you cannot locate

the install le, check whether your browser has saved it in your Downloads folder.

B Extract the install le from the zip folder. Right-click on the zip folder and choose 'Extract

All', (or extract the le using another extraction utility of your choice).

C Double-click on the extracted .msi install

le. This will launch the ToolBox installer.

Depending on your security settings, a

'Security Warning' dialogue may appear.

If you see the security message, click

'Run'.

D The ToolBox setup wizard will

launch.

Click 'Next' to get started.

E The wizard will also ask for

conrmation that you wish

to begin the installation.

Click 'Next' to continue.

F The wizard will prompt you to

select an installation folder.

You may accept the default

installation folder, or select

an alternative location by

clicking 'Browse'.

Click 'Next' to continue.

G The install wizard will now

install ToolBox.

Please wait. This process usu-

ally takes 2-3 minutes, but

may take longer in some

situations.

H When the installation has suc-

cessfully completed, the fol-

lowing dialogue will appear.

Click 'Close' to exit.

The installer will place an icon

on your desktop for easy ac-

cess to ToolBox.

The downloaded .zip and

.msi installer les are no

longer needed, and may be

deleted if desired.

4SOFTWARE CONFIGURATION USING TOOLBOX

4.1 - Bridge Key

Install the ToolBox soware (see Section 3) before connecting the Merlin to your PC.

Then connect the Merlin to your computer's USB port using the Bridge Key (supplied sepa-

rately), as shown below. The interface cable connects to the USB programming jack on the

unit's back panel (see 5.3D). A USB extension cable is supplied for your use if required - this is

oen used for convenience in accessing USB ports located at the back of the computer.

USB Bridge Key

Interface

Cable

USB Extension Cable

(If Necessary)

PC Connection

INSTALL SOFTWARE FIRST!

Merlin

Universal

Indicator

CAUTION

Risk of damage to equipment or PC

Ensure that all connections between the Bridge Key and your Merlin are secure. Connect-

ing your indicator with cables that are not rmly 'pushed in' will result in connection faults,

and in extreme cases could cause damage to your computer.

Always use the windows ‘Safely remove hardware’ function before unplugging the

Bridge Key from your computer.

4.2 - Using ToolBox

The ToolBox soware enables full conguration of your Merlin universal indicator. To set up

your indicator, only the Bridge Key is required - you do not need to supply power.

ToolBox features a comprehensive help panel that will guide you through the setup of your

Merlin universal indicator. Helpful hints and explanations will appear when you adjust a

setting using the ToolBox controls.

There are three main navigation pages/tabs:

›Input/Output: Input mode/range, Scaling/offset, Display, Retransmission scaling

›Setpoints: Alarm control/mode, Setpoint activation points, advanced modes

›Advanced: Load/save configuration, Create configuration certificate

A Double-click the ToolBox icon on your desktop to launch the ToolBox program.

B With the Merlin connected to your computer's USB port (see 4.1), click the green

'Connect' button. This will scan your computer's Com ports and automatically connect to

your device.

Connection problems?

ToolBox will auto-detect and connect to the Merlin when you click the 'Connect' button. If you

have problems establishing a connection, please check the following:

›Ensure that all connections between the device and your computer are secure. The main

interface cable must be fully inserted into both the USB programmer and the Merlin's

programming port. Press firmly.

›Try disconnecting and reconnecting the Merlin USB, or using a different USB port on

your computer.

›Disconnect any additional compatible devices. The software auto-detect feature does

not work if multiple Merlins are connected simultaneously.

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