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  • Users: 45bob
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  1. 45bob

    MicroLogix Modbus RTU to Chessel 5180V Recorder Problem

    I am trying to read values from a Chessel 5180V Recorder into a MicroLogix 1500 PLC using Modbus RTU. Channel 1 of the 1500 is set up as Modbus Master, the Recorder is Modbus Slave (Node 2). For starters, I tried to read an IEEE Floating Point value of Recorder Channel 1 PV by using the MSG...
  2. 45bob

    Multiple ABB AC Drive Failures

    One of our plants has numerous 100HP and 300HP ABB VFD's (both ACS600 and 800 Series). Our plant power is 460/277V. The drives operate off the 460V line. They run cooling gas blowers for our batch processing equipment. These cooling blowers normally run 1 to 2 hours followed by 6 hours off. We...

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