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Post by Lake Shore Jeff M on Jul 5, 2023 6:16:45 GMT -5
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Post by Lake Shore Jeff M on Jul 2, 2023 21:03:52 GMT -5
What you have found is correct, an input can only be assigned as the control input for one of the outputs at any given time.
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Post by Lake Shore Jeff M on Jun 27, 2023 6:51:31 GMT -5
The maximum compliance voltage the AC current source can provide is fixed at either 10 V or 100 V for the 1 µA to 10 mA ranges and 10 V only for the 100 mA range.
Interface Command: SOURce:CURRent[:SENSe][:VOLTage]:AC:VRANGE
Please review section 3.4.3.4.2 AC Voltage Compliance in the Model 155 User Manual for additional information.
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Post by Lake Shore Jeff M on Jun 15, 2023 14:54:34 GMT -5
The output percentage has to be more than 10% out in order to get a reasonable reading because those values are not calibrated. We didn’t want to false trigger a heater short or open. Also, if the heater is not steady, and is changing more than 4% each time through the loop, it will not calculate either.
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Post by Lake Shore Jeff M on Jun 15, 2023 14:27:06 GMT -5
1. The Query commands available on the USB interface do not have any effect on the scanning of the channels. The channel scanning is as you describe in question #3.
2. I need to investigate exactly how the filter works and will get back to you soon.
3. You are correct in how the scanning and data storage works. When all 8 channels are enabled, and none of them are using the NTCRTD 100K Ohm range, the respective channels are read every 400 ms and the data is stored in registers that are read out when the query command is received.
4. The 2.5 readings/second means that each channel is read 2.5 times a second or every 400 ms unless it is using the 100k ohm range where it doubles the scan time to 800 ms. Requesting data faster than every 400ms would result in the same readings being read as before.
5. The measurement operation is the same and what gets reported over the ProfiBUS is the data that is stored when the Master requests that the slave send it's data.
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Post by Lake Shore Jeff M on Jun 15, 2023 10:44:15 GMT -5
Please send a picture of the display to support@lakeshore.com so we can review what you are seeing.
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Post by Lake Shore Jeff M on Jun 7, 2023 7:42:04 GMT -5
The issue may be in the line: “ z = (((x - ZL) * (ZU - x)) / (ZU - ZL))” This should read: “ z = (((x - ZL) - (ZU - x)) / (ZU - ZL))
Please le me know if this does not resolve the issue
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Post by Lake Shore Jeff M on Jun 2, 2023 11:54:30 GMT -5
Providing you have a P value that is greater than 1 and your setpoint is higher than the control sensor temperature, if you have no output, there is most likely a defective component in the heater circuit and there nothing you can do other than purchase a new controller as we no longer offer repair service for the Model 330.
I suggest you reset the controller to factory default values, then reconfigure the controller and if it still does not work, there is nothing you can do other than replace the controller.
To reset the controller, press and hold the Escape and Units buttons in for approximately 20 seconds and when all of the LED's light release the buttons.
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Post by Lake Shore Jeff M on May 30, 2023 6:35:23 GMT -5
Chart recorder can only connect to one controller, however, you can run multiple chart recorder applications in separate windows at the same time. Start the application and connect to the first Model 336, then start another window with the application connected to the second Model 336.
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Post by Lake Shore Jeff M on May 22, 2023 11:57:07 GMT -5
We have found that the main issue is that The Chart Recorder application is a 32-bit JAVA application so it requires that a 32-bit JAVA version be installed. Based on the failure mode, I believe you only have a 64-bit JAVA version installed.
To confirm, open the JAVA Configurator and click on Java and then view. You need to see both the X86_64 and X86 versions.
If you do not have the X86 version installed it can be obtained from the Oracle web site.
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Post by Lake Shore Jeff M on Apr 25, 2023 15:07:42 GMT -5
The email you sent was assigned to our Janis support engineer so you should hear from him soon.
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Post by Lake Shore Jeff M on Apr 25, 2023 7:09:35 GMT -5
The Model 336 can be configured to use the Ethernet Interface were you would assign an IP Address that the PLC device can connect to using a TCP/IP Socket connection. The Model 336 can support up to 5 simultaneous socket connections.
Once you have a connection established, you would need an application on the PLC that could send and receive commands and their respective responses.
For a complete description of the Model 336 Ethernet Interface, please review the information in chapter 6 of the user manual.
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Post by Lake Shore Jeff M on Apr 19, 2023 14:21:11 GMT -5
The heater is a wire wound heater so we can provide the instructions and a kit of parts if you have the ability to perform the work yourself. Do you want me to send you the information? If yes, please send me an email to support@lakeshore.com so I can respond with the information and instructions you would need.
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Post by Lake Shore Jeff M on Apr 19, 2023 13:17:43 GMT -5
Please provide additional information regarding what this device is. Is it from a system you have purchased from Lake Shore or Janis Research? If yes, please provide the model and serial number of the system so we can research the information.
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Post by Lake Shore Jeff M on Apr 12, 2023 9:22:28 GMT -5
I am not familiar with the TI module you mention so I cannot answer that question.
We do not have an application note regarding using our sensors with microcontrollers and as I mentioned before, the sensor requires a 10µA excitation current in order for it to work so you may not have a choice other than a daughter card. Since the RTD sensor also requires an excitation current that you need to source the diode would ne no different other that the 10µA versus 1mA requirement for operation.
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