As part of Emerson’s acquisition of the Pentair Valves and Controls business, the Keystone brand of valves and actuators joined the final control area of Emerson Automation Solutions. Over on the Bettis YouTube channel, is a great series of videos in setting up Keystone EPI2 electric actuators.
I’ll recap a few points made in the first video, Keystone EPI2 Setup & Commissioning Video 1 Setting Mechanical Limits, in this seven-part series.
The mechanical stops limit the physical travel of the actuator’s gear mechanism. To properly set up, the electronic limits of travel must be set 90 degrees apart, and outside of that range, you set the mechanical limits by the stop bolts.
With a handwheel, rotate the actuator to the open position. The travel indicator should be pointing straight down the pipeline. Turn the open position stop bolt until it contacts the drive sleeve and then turn back one full rotation to be outside the electronic limits. Secure the lock nut to hold this position. Follow a similar procedure with the actuator turned to the close position.
- Video 2 Base Card, Setting Electronic Limits
- Video 3 Base Card, Setting Opening & Closing Speed
- Video 4 OM1 Analog Card Overview, Input & Output Setup
- Video 5 OM1 Analog Card Advanced Setup, Reverse Output
- Video 6 OM1 Analog Card Advanced Setup, Setting VDC Feedback
- Video 7 OM13 Overview & 3 Wire Control Operation
You can connect with other valve and actuator experts in the Valves and Actuators groups in the Emerson Exchange 365 group or meet them face to face at the Oct 1-5 2018 Emerson Exchange conference in San Antonio, Texas.