Experimental Physics and
Industrial Control System

"Smith, Martin via Tech-talk" <[email protected]> · Thu, 4 Apr 2019 16:32:00 +0000

Hi Ronaldo,

At APS we currently have the following:
Insertion Devices:
---------------------------------------------------------------------------
(Stepper motors)
17 - 2-axis
31 - 4-axis
1 - 6-axis revolver

(Electromagnetic)
3 - Superconductng Undulators
1 - Circularly Polarized Undulator
1 - IEX device able to produce a variety of polarizations

For the motion devices:
Our positioning resolution for all devices is encoder dependent. If we are
running on rotary encoders we position to within 3 microns. With the linear
encoders we position to within 1 micron. I think that the resolution of the
linear encoder is about 0.1 microns and not sure about the rotary. This is
only for gap translation motion.

We have 2 kinds of stepper drives different for 2-motor and 4-motor. All motors
are 4-phase motors wired as 2-phase in parallel. All motor controllers are one
of MAXv or OMS VME8.

2-motor:
-----------
Superior Electric SS2000-D12 This drive is now obsolete.
208 VAC input power, 12-Amp output,

4-motor:
-----------
Compumotor Parker S8-Drive or Zeta-8 depending how old the system is.
120 VAC input power, 8-Amp output

NOTE:
All of these control systems are very old and as such it is likely that at least
some of these systems will be upgraded. This is what I'm considering at this
time (although not a real project yet).

First the big thing is the motion control, drive units, and number of axes
required. What I'm thinking is to have some sort of limit switch logic and
interlocks either in an FPGA, PLC, or built into the motor controller.

The drive units (for us) would likely need an enclosure and may or may not be
integrated with the controller. I have been looking at the ACS Motion Control
UDMmc drives (not the toy ones) the ones for large motors. These have
controllers and drives all in one unit.

Marty Smith
ANL/APS Controls Group

On 4/4/19 6:01 AM, ronaldo.mercado--- via Tech-talk wrote:
> Dear tech-talk,
> 
> My query is not  related to EPICS, but I hope to get advice from the EPICS 
> community.
> 
> I work at Diamond Light Source (http://www.diamond.ac.uk) looking after the 
> control system of insertion devices.
> 
> I am writing because we are reviewing the build of insertion devices.
> 
> I would like to contact insertion device builders to enquire about the choices 
> of components used for the controls system.
> 
> I started by contacting a list of insertion device groups from the European 
> LEAPS initiative (https://www.leaps-initiative.eu/).
> 
> I had helpful replies from many. Thank you again.
> 
> I would now like to also contact facilities using insertion devices in the EPICS 
> community.
> 
> Please could you forward my query at the bottom of this message to a relevant 
> person at your institution?
> 
> I would also be glad to get your comments and feedback.
> 
> Many thanks,
> 
> Ronaldo Mercado
> 
> Diamond
> 
> Query about control system choices for insertion devices.
> 
> Dear Sir/Madam,
> 
> Would you be able to comment or let me know your choices in motion equipment in 
> your installations?
> 
> Resolution
> 
> Motor type (stepper vs servo vs other)
> 
> Motor controller (make, model, type)
> 
> Amplifiers (make, model, type)
> 
> For example at Diamond we have 24 moveable insertion devices.
> 
> We use servo motors, Compax amplifiers (made by Parker) and depending on the 
> generation of our equipment OMS (prodex)
> 
> or Delta Tau motor controllers.
> 
> The resolution of our equipment is 0.1 micron for vertical translation and 1.0 
> micron or 0.5 micron for phase
> 
> translation (APPLE-II insertion devices).
> 
> My intention is to look through this information to guide us for 
> upgrading/updating our systems.
> 
> Thank you for your time and help.
> 
> Yours faithfully,
> 
> Ronaldo Mercado
> 
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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System