Experimental Physics and
Industrial Control System

Rod Nussbaumer <[email protected]> · Wed, 7 Nov 2018 13:59:35 +0000

Nilson:

The power supply manufacturers Sorenson, TT, Lambda and other popular 
manufacturers have a wide range of power supplies with LAN connections 
suitable for control via the EPICS streamDevice support, using a SCPI or 
SCPI-like API. These are in wide use at TRIUMF and have been very 
successful. If your EPICS support includes some way to drive a DAC via 
an analog output record, there are many other supplies that allow 
programmable control through an analog input, and supply current and 
voltage readback through analog outputs that you can read with ADC 
support via analog input records. This mode is also in wide use here.

Rod Nussbaumer
TRIUMF,
Vancouver, Canada.

On 11/07/2018 05:11 AM, Mark Rivers wrote:
> Hi Nilson,
> 
> 
> We have been very happy with the Sorensen XHR series:
> 
> 
> https://www.powerandtest.com/products/dc-bench-power-supplies/xhr-series
> 
> 
> We use them for EPICS temperature control using the EPID record, as you are proposing.
> 
> 
> These are not digitally programmable, but are controlled by an analog input voltage.  We then use an EPICS D/A converter to control them, and an EPICS thermocouple reader as the PID input.
> 
> 
> Recently we have been using the Measurement Computing devices for these.  Here is a photo of a a system consisting of black box with a Measurement Computing device packaged inside that does both thermocouple input and analog output.  The analog output is connected to the Sorensen power supply shown below it.  We are using a model with up to 33 V and 33 A (1000 W) which is well matched to heaters with 1 ohm resistance.  There is a model with maximum 7.5 V output and maximum 130 A, which would be a better match for lower resistance heaters.
> 
> 
> [cid:75a8e7bf-3f0c-4b6b-9168-ec47ae64fa4f]
> 
> Mark
> 
> 
> ________________________________
> From: [email protected] <[email protected]> on behalf of Nilson Pereira <[email protected]>
> Sent: Wednesday, November 7, 2018 6:49 AM
> To: Tech-talk
> Subject: Current Source / Power supply suggestion
> 
> Dear All,
> 
> I am developing a temperature control solution based on peltier
> elements. The PID loop will control the current on the peltier elements
> based on the target temperature.
> 
> What I am really looking for are suggestions for remote control linear
> DC Current source (0-5A, >300W) or Power supply with available EPICS
> drivers.
> 
> Any information will be truly appreciated. (Bonus for being easily
> available in europe)
> 
> Thank you.
> 
> Best regards,
> 
> Nilson Pereira
> 
> 
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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System