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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 

© 2022 AERCO 

 

 

 

 

 

 

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. 

Summary of Contents for AERCO Eurotherm 3508

Page 1: ...laimer 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...

Page 2: ...oller 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 progra...

Page 3: ...Y TAG 0101 DRAFT Technical Support 800 526 0288 Mon Fri 8 am 5 pm EST Page 3 of 10 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 ...

Page 4: ...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 ala...

Page 5: ...Eurotherm 3508 Controller Guide Section 4 SELECTING AUTO MANUAL OPERATION TAG 0101 DRAFT Technical Support 800 526 0288 Mon Fri 8 am 5 pm EST Page 5 of 10 4 SELECTING AUTO MANUAL OPERATION ...

Page 6: ...y Examples are Range limits setting alarm levels communications address The instrument will continue to control when in Levels 1 2 or 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...

Page 7: ... 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 ...

Page 8: ...Eurotherm 3508 Controller Guide Section 7 FUNCTION BLOCK NAVIGATION DIAGRAM TAG 0101 DRAFT Technical Support 800 526 0288 Mon Fri 8 am 5 pm EST Page 8 of 10 7 FUNCTION BLOCK NAVIGATION DIAGRAM ...

Page 9: ...6 0288 Mon Fri 8 am 5 pm EST Page 9 of 10 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 ...

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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