Watts AERCO Eurotherm 3508 Guía del usuario

Heating and Hot Water Solutions

AERCO International, Inc. • 100 Oritani Drive • Blauvelt, NY 10913

USA: T: (845) 580-8000 • Toll Free: (800) 526-0288 • AERCO.com

Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST

TAG-0101 • DRAFT

Eurotherm 3508 Controller

Technical Application Guide

Disclaimer

The information contained in this manual is subject to change without notice

from AERCO International, Inc. AERCO makes no warranty of any kind with

respect to this material, including, but not limited to, implied warranties of

merchantability and fitness for a particular application. AERCO International is

not liable for errors appearing in this manual, not for incidental or

consequential damages occurring in connection with the furnishing,

performance, or use of these materials.

Eurotherm 3508 Controller Guide

Section 1: OPERATOR BUTTONS

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1 OPERATOR BUTTONS

A/MAN

This button

can be

disabled

Toggles the selected loop between Auto and Manual operation.

Manual operation means that the controller output power is adjusted by the user. The input

sensor is still connected and reading the PV but the control loop is open.

Auto means that the controller is automatically adjusting the output to maintain control, ie

the loop is closed.

If the controller is in manual mode, ‘MAN’ light will be indicated.

If the controller is powered down in Manual operation it will resume this mode when it is

powered up again.

PROG

To select the programmer summary page

RUN/HOLD

This button

can be

disabled

Press once to start a program. ‘RUN’ will be indicated

Press again to hold a program. ‘HLD’ will be indicated

Press and hold for at least two seconds to reset a program.

‘RUN’ will flash at the end of a program

‘HLD’ will flash during holdback



Press to select new PAGE headings



Press to select a new parameter in the page

▼

Press to decrease an analogue value, or to change the state of a digital value

▲

Press to increase an analogue value, or to change the state of a digital value

Page

Scroll

Lower

Raise

Auto/Manual

Eurotherm 3508 Controller Guide

Section 2: NORMAL OPERATION HOME DISPLAY

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2 NORMAL OPERATION HOME DISPLAY

When the or button is

pressed the Setpoint source

is shown, e.g. SP1

Output/Valve Position

& Bar Graph Indicator, e.g.

OP1

Units

Process Variable (PV1)

Setpoint (SP1)

Eurotherm 3508 Controller Guide

Section 3: BEACON DISPLAY AND DESCRIPTION

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3 BEACON DISPLAY AND DESCRIPTION

OP1

In a single loop controller OP1 and OP2 operate channel 1 and 2 outputs respectively for the

configured loop.

MAN

Illuminates when manual mode active. If the HOME display is showing the dual loop overview, MAN

illuminates if Loop 1 is in manual. If the Loop 1 or Loop 2 overviews are being displayed MAN applies

to the loop being displayed.

REM

Illuminates when remote setpoint active

ALM

If an alarm occurs the red alarm beacon flashes accompanied by message showing source of alarm.

To acknowledge press and . The message disappears. If the alarm condition is still present the

beacon lights continuously. When cleared it will extinguish.

Flashes when H Channel comms active

Eurotherm 3508 Controller Guide

Section 4: SELECTING AUTO/MANUAL OPERATION

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4 SELECTING AUTO/MANUAL OPERATION

Eurotherm 3508 Controller Guide

Section 5: ACCESS LEVELS

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5 ACCESS LEVELS

Parameters are available under different levels of security are

Level 1, Level 2, Level 3 and Configuration Level.

Level 1 has no security password since it contains a minimal

set of parameters generally sufficient to run the process on a

daily basis.

Level 2 allows parameters, such as those used in

commissioning a controller, to be adjusted.

Level 3 makes all operating parameters available and alterable (if not read only). Examples are:

•Range limits

•setting alarm levels

•communications address.

The instrument will continue to control when in Levels 1, 2or 3.

Configuration Level makes available all parameters including the operating parameters so that there

is no need to switch between configuration and operation levels during commissioning. It is designed

for those who may wish to change the fundamental characteristics of the instrument to match the

process. Examples are:

•Input (thermocouple type)

•Alarm type

•Communications type.

In Configuration Level the controller will not necessarily be controlling the process or providing alarm

indication. Do not select configuration level on a live process.

Level Pass Code

Level 1 Default

Level 2 42

Level 3 106

Config 303

Eurotherm 3508 Access Levels

Eurotherm 3508 Controller Guide

Section 6: SELECTING ACCESS LEVELS

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6 SELECTING ACCESS LEVELS

1. From any display press and hold the PAGE ()button. After a few seconds the display will

enter the Access List & show: Goto Level 1.

NOTE: Press SCROLL () button to scroll through the list of Access parameters. If

no button is pressed for about 2 minutes the display returns to the HOME display.

2. Press UP▲or DOWN ▼button to select access level.

3. Use UP▲and DOWN ▼buttons to scroll to passcode (1-999) .

Note: It is not necessary to enter a code when changing to a lower level.

Eurotherm 3508 Controller Guide

Section 7: FUNCTION BLOCK NAVIGATION DIAGRAM

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7 FUNCTION BLOCK NAVIGATION DIAGRAM

Eurotherm 3508 Controller Guide

Section 8: CHANGING MODBUS ADDRESS

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8 CHANGING MODBUS ADDRESS

1. From Access Level 3 press until the Digital Communications Function Block is displayed.

2. Press▲ or▼until Comms Identity “H” is displayed.

3. Press until the Address Parameter is displayed.

4. Press▲ or▼until the desired Comm Address is displayed.

Eurotherm 3508 Controller Guide

Section 9: TRANSITION FROM LOCAL TO REMOTE SETPOINT CONTROL

TAG-0101 •DRAFT Technical Support •(800) 526-0288 •Mon-Fri, 8 am - 5 pm EST Page 10 of 10

9 TRANSITION FROM LOCAL TO REMOTE SETPOINT CONTROL

1. Press until the Control Loop 1 (Lp1) Function

Block is displayed.

2. Press▲ or▼until Setpoint (SP) is displayed.

3. Press until the Alternate Setpoint Enable (Alt SP En) is displayed.

4. Press▲ or▼to select YES.

5. The Remote Beacon will appear on the Display.

6. Write the Remote Setpoint to Modbus Holding Register 485 (AltSP).

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