10/24/2010 11:58 AM | |
Joined: 7/2/2008 Last visit: 9/30/2024 Posts: 928 Rating: (308)
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Hello MRG, In addition to Late's answer, In SIMATIC ET 200M distributed I/O device HART analog modules, page 22 (Figure 2-8) you will see how to connect a single transmitter to 2 analog inputHART modules redundantly (Since it's in the manual then it should work well).
I can't define your normal safety barrier. In page 25 in the same manual, you will see how HART data is being transferred. You should notice that a ZERO bit has a frequency of 2200 Hz which means a cycle time of approximately 455 Micro second. If you are going to use safety barrier then its transferring characteristics should be suitablefor this speed. I believe that most of barriers' manufacturers have barriers with HART transfer capability. This is not a recommendation but it's just the ones I know, P+F Ex-Smart transmitter power supply with 2 outputs (for analog inputs) P+F Ex-Smart current driver/repeater (for analog outputs) I think youmay find the same in MTLand Weidmuller. Best regards. H-H |
Last edited by: H-H at: 10/24/2010 12:05 PM |
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