Help
  • Explore Community
  • Get Started
  • Ask the Community
  • How-To & Best Practices
  • Contact Support
Notifications
Login / Register
Community
Community
Notifications
close
  • Forums
  • Knowledge Center
  • Events & Webinars
  • Ideas
  • Blogs
Help
Help
  • Explore Community
  • Get Started
  • Ask the Community
  • How-To & Best Practices
  • Contact Support
Login / Register
Sustainability
Sustainability

Join our "Ask Me About" community webinar on May 20th at 9 AM CET and 5 PM CET to explore cybersecurity and monitoring for Data Center and edge IT. Learn about market trends, cutting-edge technologies, and best practices from industry experts.
Register and secure your Critical IT infrastructure

10k Thermistor Look Up Table for an I/Net 7756 (lower board)

Building Automation Knowledge Base

Schneider Electric Building Automation Knowledge Base is a self-service resource to answer all your questions about EcoStruxure Building suite, Andover Continuum, Satchwell, TAC…

cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Show  only  | Search instead for 
Did you mean: 
  • Home
  • Schneider Electric Community
  • Knowledge Center
  • Building Automation Knowledge Base
  • 10k Thermistor Look Up Table for an I/Net 7756 (lower board)
Options
  • Bookmark
  • Subscribe
  • Email to a Friend
  • Printer Friendly Page
  • Report Inappropriate Content
Invite a Co-worker
Send a co-worker an invite to the portal.Just enter their email address and we'll connect them to register. After joining, they will belong to the same company.
You have entered an invalid email address. Please re-enter the email address.
This co-worker has already been invited to the Exchange portal. Please invite another co-worker.
Please enter email address
Send Invite Cancel
Invitation Sent
Your invitation was sent.Thanks for sharing Exchange with your co-worker.
Send New Invite Close

Related Forums

  • Intelligent Devices Forum

Previous Next
Contributors
  • DavidFisher
    DavidFisher
  • Derrick_Ratliff
    Derrick_Ratliff
  • Sacco
    Sacco
  • Product_Support
    Product_Support

Invite a Colleague

Found this content useful? Share it with a Colleague!

Invite a Colleague Invite
Back to Building Automation Knowledge Base
Options
  • Bookmark
  • Subscribe
  • Email to a Friend
  • Printer Friendly Page
  • Report Inappropriate Content
0 Likes
2437 Views

Link copied. Please paste this link to share this article on your social media post.

Trying to translate this page to your language?
Select your language from the translate dropdown in the upper right. arrow
Translate to: English
  • (Français) French
  • (Deutsche) German
  • (Italiano) Italian
  • (Português) Portuguese
  • (Русский) Russian
  • (Español) Spanish

10k Thermistor Look Up Table for an I/Net 7756 (lower board)

Picard Product_Support
‎2018-09-10 06:14 AM

Issue

Table needed for linearizing a 10K thermistors for an I/Net 7756 (lower board)

Product Line

TAC INET

Environment

7756 (lower board)

Cause

Thermistors require the use of a look up table to linearize the data.

Resolution

Thermistor Inputs on a PCU 7756 (lower board)

  1. Enter the Temperature data in °C (First Column - 31 entries)
  2. Enter the corresponding resistance data in Ohms (Second column - 31 entries)
  3. Enter the dissipation constant in milliwatts per °C: 2
  4. Low Temperature : -22.11°F (-30.06°C)
  5. High Temperature: 247.92°F (119.95°C)
  6. Point Value in °F: M=0.00412; b=-22.1138
  7. Point Value in °C: M=0.00228913; b=--30.0632065

Look Up Table:

°C Ohms Current Self Htg Adj °C Adj °F VDC Counts Adj Cts
120 389 0.000481 0.045052 119.95 247.92 0.187217 1227 65535
100 680 0.000468 0.074521 99.93 211.87 0.318352 2086 56785
90 917 0.000458 0.096177 89.90 193.83 0.419987 2752 52407
80 1258 0.000444 0.12407 79.88 175.78 0.558714 3662 48027
70 1753 0.000425 0.158633 69.84 157.71 0.745767 4887 43643
60 2489 0.0004 0.199471 59.80 139.64 0.996477 6530 39257
55 3045 0.000383 0.223671 54.78 130.60 1.167114 7646 37062
50 3602 0.000368 0.243359 49.76 121.56 1.32407 8677 34869
45 4368 0.000348 0.264484 44.74 112.52 1.520045 9962 32676
40 5326 0.000326 0.283435 39.72 103.49 1.73757 11387 30483
35 6691 0.0003 0.300218 34.70 94.46 2.004374 13136 28292
30 8056 0.000277 0.308878 29.69 85.44 2.230837 14620 26104
28 8777 0.000266 0.311174 27.69 81.84 2.337168 15317 25229
26 9572 0.000255 0.312351 25.69 78.24 2.44533 16025 24355
25 10000 0.00025 0.3125 24.69 76.44 2.5 16384 23918
24 10450 0.000244 0.312349 23.69 74.64 2.555012 16744 23481
22 11420 0.000233 0.311127 21.69 71.04 2.665733 17470 22608
20 12490 0.000222 0.308669 19.69 67.44 2.77679 18198 21735
18 13680 0.000211 0.304953 17.70 63.85 2.888514 18930 20863
16 15000 0.0002 0.3 15.70 60.26 3 19661 19992
14 16470 0.000189 0.29383 13.71 56.67 3.111069 20388 19121
12 18090 0.000178 0.286579 11.71 53.08 3.220007 21102 18250
10 19900 0.000167 0.278241 9.72 49.50 3.327759 21808 17380
8 21920 0.000157 0.268921 7.73 45.92 3.433584 22502 16510
6 24180 0.000146 0.258715 5.74 42.33 3.537156 23181 15641
0 32660 0.000117 0.224329 -0.22 31.60 3.827942 25086 13035
-4 36200 0.000108 0.211999 -4.21 24.42 3.917749 25675 11293
-10 55340 0.0000765 0.162028 -10.16 13.71 4.234772 27753 8694
-14 69000 0.0000633 0.138199 -14.14 6.55 4.367089 28620 6957
-20 97130 0.0000467 0.105789 -20.11 -4.19 4.533277 29709 4350
-30 177200 0.0000267 0.063207 -30.06 -22.11 4.732906 31017 0

This spreadsheet is for a thermistor rated at 10,000 ohms at 25°C.

  1. Install a 10K Ohm Resistor in the "B" terminal (consult the TCON for the controller you are using for details)
  2. This look up table program is based on using 31 entries
  3. The data points do not have to be evenly spaced

Click here to download this in pdf format.

For the look up table to the 7716, 7718, 7728 and a 7756 (upper board), see 10k Thermistor Look Up Tables for a 7716, 7718, 7728 and a 7756 (upper board).

Labels (1)
Labels:
  • TAC INET
Attachments
Tags (3)
  • Find more articles tagged with:
  • 7212
  • coefficients
  • conversion
Was this article helpful? Yes No
No ratings

Link copied. Please paste this link to share this article on your social media post.

To The Top!

Forums

  • APC UPS Data Center Backup Solutions
  • EcoStruxure IT
  • EcoStruxure Geo SCADA Expert
  • Metering & Power Quality
  • Schneider Electric Wiser

Knowledge Center

Events & webinars

Ideas

Blogs

Get Started

  • Ask the Community
  • Community Guidelines
  • Community User Guide
  • How-To & Best Practice
  • Experts Leaderboard
  • Contact Support
Brand-Logo
Subscribing is a smart move!
You can subscribe to this board after you log in or create your free account.
Forum-Icon

Create your free account or log in to subscribe to the board - and gain access to more than 10,000+ support articles along with insights from experts and peers.

Register today for FREE

Register Now

Already have an account? Login

Terms & Conditions Privacy Notice Change your Cookie Settings © 2025 Schneider Electric

This is a heading

With achievable small steps, users progress and continually feel satisfaction in task accomplishment.

Usetiful Onboarding Checklist remembers the progress of every user, allowing them to take bite-sized journeys and continue where they left.

of