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Production Process Insights

How to Solve Common SBC Controller Issues

Posted by George Buss on 1/25/21 8:00 AM


The Sentry SBC controller is a dedicated logic control system that can control any automatic sampler in the Sentry Equipment product line, including liquid, slurry and bulk solids samplers. With just a few simple connections, the sampler can be in operation.

This ensures a sample can be easily and safely obtained with no need for direct human interface or interference to protect sample integrity and operator safety. These composite samples are much more representative of the lot and statistically more significant for a higher level of confidence in laboratory test results.

Yet, even the most reliable sampling solution needs ongoing maintenance and service. Maintaining an SBC controller can be a challenge for plant personnel. There are many settings, which can make it overwhelming to access and select the appropriate settings for the controller.

A Visual Guide to SBC Controller Troubleshooting

When installing and maintaining automatic sampling equipment, IOMs and spec sheets can provide only so much information. A visual, hands-on training tool – such as an on-demand video – can be more helpful when service personnel need to troubleshoot equipment. Training videos can be paused and replayed as many times as needed to fully understand the correct maintenance and repair of samplers.

Maintenance professionals can watch the following video to learn how to properly install, set up and maintain automatic sampling equipment and SBC controller. It also reviews:

  • Potential maintenance hazards
  • Equipment parts and pieces
  • How the equipment works
  • Safety guidelines
  • Troubleshooting tips

Additional troubleshooting tips

Troubleshooting should be a part of your regular maintenance plan, including calculating setting times and making appropriate electrical connections. When the SBC controller isn’t working properly, knowing a few troubleshooting tips can keep your system running smoothly.

Problem #1: Controller won’t operate

First, check the pneumatic and/or electric power source to verify that the correct voltage and air pressure is bring supplied to the controller. Then, have a qualified technician run a complete operating check of timing circuits, remote contact inputs, and/or flow counter inputs.

Problem #2: The remote start function isn’t working

When using the remote start function, you’ll need to supply an N/O contact. Then, you must enable this feature in the options menu for it to operate properly.

Problem #3: The remote enable function isn’t working

When using the remote enable function, it’s necessary to remove the jumper between TB2-1 and TB2-2. If this jumper isn’t removed, you’ll still be able to actuate the sampler from the controller.  

Problem #4: Buttons won’t respond

If the controller was up and running and the plant observed a power outage or if the voltage supplied to the controller fluctuates, the controller automatically goes into “IDLE” mode. While in this mode, certain buttons are disabled.

To change the state of the controller from “IDLE” to “RUN”:

  1. From the main screen, press the keys together. This will take you to the “system” menu.
  2. Arrow down to “view status” and press enter.
  3. Once “mode” is highlighted, press enter again and change the status from “IDLE” to “RUN”.
  4. Exit this screen and press “main”.
  5. All buttons should now work.

Contact us at +1-262-567-7256 or complete our online contact form to discuss how Sentry automatic sampling systems can help you achieve safe, simple and accurate sampling results.

Learn More About Sentry ProShield Lifecycle Services

Topics: Solids & Powder, Liquid & Slurry, Any Application, Gas

Written by George Buss

Picture of George Buss
As one of our expert service technicians, George has been working on Sentry sampling products and systems since 2001. This means he has accumulated a wealth of knowledge and experience with Sentry sampling equipment, and is happy to share his knowledge with customers looking to ensure their sampling equipment is working optimally and efficiently. In his spare time, George can be found fixing stuff and making it work (which also sounds a lot like work, doesn’t it?)