AI531 8 Channel Analog Input, Does the card maintain analog circuit integrity when the PLC loses power

Add New Comment


asked 1 year ago




could you explain what you real mean or need? The modules of AI 531 are supplied with a process voltage of 24 V DC, you can use one different 24 V DC from battery surge or UPS, but it's no clear what you mean for "integrity"

If you give us more information, we can help you better

Flavio Mussolin   

answered 1 year ago


Add New Comment


When the PLC Loses power, the configuration is retained(including the parameter settings, range selections, scaling etc).

Signal Integrity: Do you mean loop integrity,as in a PID Loop? Please clarify


answered 1 year ago


By jaykelleher on 9/22/2016 | Like (0) | Report

The integrity of the connected analog signal.

By gssabbext on 9/22/2016 | Like (0) | Report

This could depend on the type of AI device connected. If you are using a "loop powered" instrument, then the instrument is also shut down . If the instrument is externally powered, it continues to function.

By jaykelleher on 9/22/2016 | Like (0) | Report

4 wire instrument with a chem dosing pump wired in series. Will the dosing pump continue to function if PLC lost power.

By Flavio Mussolin on 9/22/2016 | Like (2) | Report

As indicated in my first reply, in this case the sensor power supply must be different from that of the PLC and from UPS system.

By gssabbext on 9/25/2016 | Like (0) | Report

The Pump will continue, if the sensor is loop powered and if the pump operations /interlocks/set points do not depend on any PLC processing

Add New Comment

Get weekly AKS updates

Partner Exclusive Webinars


> – Login to the partner portal to register

Points Redemption Program - Redeem your points for ABB training, Bluetooth speakers and mugs. Terms and conditions >

Earn points when you refer a friend
AKS Referral Program is "Live" - Learn more

AKS Experts

Ask Govindaraj   

Rank: 10

Working in ABB India Operation Center. Have Project engineering and commissioning experience in ABB 800xA, Freelance, AC500.

Ask nikismith   

Rank: 254

I have been a part of the Recording & Control Factory team for 17 years in total, having spent a number of years as a repairs technician withi the manufacturing department, but being in my current role for 9 years now.

Ask Flavio Mussolin   

Rank: 4

ABB AVP, Senior Electronic and Automation Engineer with over 30 years of experience in the field of process automation automotive, pharmaceutical, hollow glass, steel and rolling.

Ask Ronny Lindström   

Rank: 18

ABB Service Engineer

Ask Stefan Stromqvist   

Rank: 1

I joined ABB in the year of 1994 and has since 1999 been working as a Service & Support Engineer at BU Control Technologies in Västerås, Sweden. My areas of expertise are: 800xA Base, 800xA for Advant Master, Information Management, operating systems, RNRP and Ethernet comms/networking in general.

Ask Sumit Gargav   

Rank: 3

I have worked with Freelance in majority, with 800xA FD and Melody system partly. Also had opportunity to work with Protocols - HART,Profibus,FF & Modbus.

Ask Harsha.D   

Rank: 7

Tech.Support,software and commisioning engineer with Proficient knowledge in 800xA and its products, RNRP,Networking in general.

Ask Dieter Henkel   

Rank: 21

Ask MMM   

Rank: 5

ABB PA CT Technical Support

Ask WvanWees   

Rank: 6

I'm a senior service engineer working for ABB in The Netherlands.

Ask Rob Lyon   

Rank: 2 I'm an independent DCS software and commissioning engineer with extensive experience in 800xA and other ABB products. I've worked in almost every corner of the world and still haven't seen it all.

Ask kstoilov   

Rank: 11

Control System Engineer: 800xA, Compact 800, AC500, AC31-50, Advant Master, Simatic, AC&DC Drives 11 years worked for ABB - Control Systems