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logo 8 program for switching two pumps alternately
Created by: AutoGen_954300 at: 1/22/2015 11:49 AM (3 Replies)
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| 1/22/2015 11:49 AM | |
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Posts: 2 Rating:
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hi, What functional blocks can help me switch two pumps alternately. ATTACHED IS PART OF THE PROGRAM. Albert. |
| 1/22/2015 11:55 AM | |
Joined: 12/18/2014 Last visit: 11/18/2024 Posts: 34239 Rating:
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Hi, there's no attachment. |
| 1/22/2015 4:31 PM | |
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Posts: 47 Rating:
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This is how I normally do it (see attached diagram). The inputs I1 - I4 are float switches. HH (top) = high level alarm H = start pumps L = stop pumps LL = low level alarm Float switches H and L operate a latching relay (B029): H sets the relay and L resets it. B001 (on delay) is a delay that triggers an alarm after 15 seconds if the float switch has not dropped (to check if the pump is really running). B002 (pulse relay) selects the pump that will run. If the output = 1, pump 1 will run, if the output = 0, pump 2 will run. Hope this helps. AttachmentLOGO_Soft_Comfort__-_DCA_Westmalle.pdf (595 Downloads) |
| 1/23/2015 7:34 AM | |
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Posts: 2 Rating:
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Thanks it helped. |
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