(0)| 12/9/2022 6:31 AM | |
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Posts: 11 Rating:
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Siemens Logo 8.3 Application Refer attached logic and equipment schematic diagram There are three air cooling compressor, which will working on temperature as below: C1 is compressor number 1, C2 means compressor number 2 and C3 means compressor number 3. Point 1: C1 switch on when: Actual temperature - Set Temperature = difference 1 °C (e.g. actual temp. 26 °C and set temp. 25 °C) Point 2: C2 switch on when: Actual temperature - Set Temperature = difference 2 °C (e.g. actual temp. 27 °C and set temp. 25 °C) Point 3: C3 switch on when: Actual temperature - Set Temperature = difference 3 °C (e.g. actual temp. 28 °C and set temp. 25 °C) If Actual temperature ≤ set temperature, all compressors shall be switched off.(e.g. actual temp. 25 °C and set temp. 25 °C) For point 1&2, If any from Compressor complete 8 hours of run it auto switche to another compressor due to avoid continuous running of a single compressor.
AttachmentTemperature Logic Schematics.pdf (513 Downloads) |
| 12/9/2022 11:11 PM | |
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Joined: 6/11/2019 Last visit: 12/30/2025 Posts: 2710 Rating:
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Hello Nimspatel007, Do you usually like that in the attachment ? In my opinion, there is a catch. If the changeover after 8 hours applies to compressors 1 and 2, only compressor 3 remains to do so. No matter how you connect it, after the runtimes of both compressors have expired, compressor 3 would run through. In order to counteract this, however, this must be implemented differently, in which compressor 3 must be included in the runtime monitoring. This can be achieved by a triggered assignment change of the compressors. But even then, if K1 and K2 were started in quick succession and both times have expired, K1 would start again and differ from the others with the running time. (Translated with Google) AttachmentSchaltplan1.zip (570 Downloads) |
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