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40m Log |
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Wed Jan 24 13:55:04 2018, Kira, Summary, PEM, Seismometer can insulation test 6x
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Thu Jan 25 12:41:18 2018, Kira, Update, PEM, Seismometer can insulation test
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Thu Jan 25 14:58:20 2018, Kira, Update, PEM, Seismometer can insulation test
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Thu Jan 25 16:39:09 2018, Kira, Update, PEM, Seismometer can insulation test
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Thu Feb 1 16:09:13 2018, Kira, Update, PEM, Seismometer can insulation test
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Mon Feb 5 12:12:41 2018, Kira, Update, PEM, Seismometer can insulation test
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Wed Feb 7 12:35:56 2018, Kira, Update, PEM, Seismometer can insulation test
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Wed Feb 7 17:01:25 2018, gautam, Update, PEM, PID test plan    
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Wed Feb 7 19:14:19 2018, rana, Update, PEM, PID test plan
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Thu Feb 8 12:24:37 2018, Kira, Update, PEM, PID test plan
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Thu Feb 8 17:32:44 2018, Kira, Update, PEM, PID test plan   
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Fri Feb 9 15:29:32 2018, Kira, Update, PEM, PID test plan
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Thu Feb 15 16:03:57 2018, Kira, Update, PEM, PID test plan
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Thu Feb 22 16:16:43 2018, Kira, Update, PEM, temp sensor input
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Mon Feb 26 16:22:10 2018, Kira, Update, PEM, temp sensor input  
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Wed Feb 28 12:31:28 2018, Kira, Update, PEM, temp sensor input
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Fri Mar 9 12:59:53 2018, Kira, Update, PEM, ADC noise measurement 
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Mon Mar 26 16:10:33 2018, Kira, Update, PEM, final setup sketch   
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Wed Apr 18 12:18:39 2018, Kira, Update, PEM, final setup sketch 7x
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Wed Apr 18 16:59:35 2018, rana, Update, PEM, final setup sketch: EX Seis
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Thu Apr 19 11:29:11 2018, rana, Update, PEM, PID tune
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Mon Apr 23 20:06:35 2018, rana, Update, PEM, PID tune
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Thu Apr 26 19:46:26 2018, rana, Update, PEM, PID Quixote
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Tue May 1 11:15:19 2018, Kira, Update, PEM, PID Quixote
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Tue May 1 15:23:18 2018, Kira, Update, PEM, new ADC channel setup issue
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Thu Apr 19 12:23:30 2018, Kira, Update, PEM, final setup sketch update 
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Thu Apr 19 18:23:51 2018, Kira, Update, PEM, final setup sketch update
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Fri Apr 20 15:07:45 2018, Kira, Update, PEM, final setup sketch update
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Thu May 24 16:08:12 2018, Kira, Update, PEM, parts list
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Tue May 29 16:22:43 2018, Kira, Update, PEM, parts list  
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Wed Jun 6 15:12:29 2018, Kira, Update, PEM, parts from lab  
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Mon Jun 18 11:12:23 2018, Kira, Summary, PEM, finishing up work at the lab  
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Tue Apr 24 09:10:20 2018, Kira, Update, PEM, final setup sketch
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Mon Apr 30 15:36:18 2018, Kira, Update, PEM, final setup sketch
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Tue May 8 10:24:10 2018, Kira, Summary, PEM, plan for this week
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Fri May 11 11:47:33 2018, johannes, Summary, PEM, Acromag issues
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Tue May 15 15:13:23 2018, Kira, Summary, PEM, Acromag issues
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Thu Mar 15 17:33:56 2018, Kira, Update, PEM, test setup
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Tue Mar 20 16:56:01 2018, Kira, Update, PEM, test setup 
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Tue Mar 20 19:48:10 2018, gautam, Update, PEM, test setup
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Fri Mar 23 12:00:20 2018, rana, Update, PEM, test setup
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Fri Mar 23 12:45:08 2018, Kira, Update, PEM, test setup
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Thu May 17 15:38:19 2018, Kira, Update, PEM, test setup with seismometer   
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Fri May 18 14:33:34 2018, Kira, Update, PEM, test setup with seismometer
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Mon May 21 14:17:28 2018, Kira, Update, PEM, test setup with seismometer
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Tue May 22 14:49:03 2018, Kira, Update, PEM, test setup with seismometer
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Wed May 23 14:50:33 2018, Kira, Update, PEM, test setup with seismometer 
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Thu May 24 15:18:12 2018, Kira, Update, PEM, PID loop restarted
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Thu May 31 15:48:16 2018, Kira, Update, PEM, running PID script with seismometer
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Mon May 21 10:15:35 2018, gautam, Update, PEM, test setup with seismometer
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Wed Feb 28 21:14:34 2018, gautam, Summary, PEM, Channel admin
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Tue Mar 27 11:11:16 2018, Kira, Update, PEM, Channel setup
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Thu Mar 29 17:14:42 2018, Kira, Update, PEM, PID test
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Fri Mar 30 06:16:45 2018, rana, Update, PEM, PID test
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Fri Mar 30 16:10:46 2018, Kira, Update, PEM, PID test
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Wed Apr 4 16:23:10 2018, Kira, Update, PEM, PID test  
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Fri Apr 6 16:17:20 2018, Kira, Update, PEM, PID tuning
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Fri Apr 6 18:28:57 2018, rana, Update, PEM, PID tuning
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Mon Apr 9 16:30:21 2018, Kira, Update, PEM, MEDM setup
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Tue Apr 10 15:42:08 2018, Kira, Update, PEM, MEDM setup
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Thu Apr 12 10:15:33 2018, Kira, Update, PEM, MEDM setup
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Fri Apr 13 00:20:46 2018, rana, Update, PEM, MEDM setup
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Message ID: 13691
Entry time: Tue Mar 20 16:56:01 2018
In reply to: 13684
Reply to this: 13692
13700
13701
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Author: |
Kira |
Type: |
Update |
Category: |
PEM |
Subject: |
test setup |
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The MOSFET was getting pretty hot, so I switched it out to a larger heat sink and it's fine now. I then used a function generator in place of the DAC to provide ~3.5V. I got the current in the circuit to 1.7A, which is as expected, since we have 24V input, the heater resistance is 12.5ohm and the resistor we are using is 1ohm, so 24V/(12.5+1)ohm = 1.7A. The temperature inside the can rose about 5 degrees in half an hour. The only issue now is the voltage regulators and OP amp inside the box get hot, though it doesn't seem to be dangerous. I switched the function generator input to a DAC and Gautam set it to 1.5V. If it works, then we'll leave this on overnight and work on the PID control tomorrow. I've attached images of the current heater circuit box when it is open and the new heat sink for the MOSFET.
gautam: we also tried incorporating the EPICS channels from the Acromag into the RTCDS so that we can implement PID control by using Foton. I tried doing this using the "EpicsIn" and "EpicsOut" blocks from CDS_PARTS. While the model recompiled smoothly, I saw no signals in the filter module i had connected in series with the EpicsIn block. So I just reverted c1pem to its original state and recompiled the model. Guess we will stick to python script PID reading EPICS channels to implement the PID servo. |
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