Danfysik

Wiki > The Backend System > Specific Device IOC > Power Supplies > Danfysik

A way of controlling power supplies for magnets.

Current three models supported: 8800, 8000 and XXXX

All can be in calibrated or uncalibrated mode. Calibration is done within the IOC and enabled via macro. Additionally there is a macro to switch to a local calibration repository instead of the default common one. (see Calibration Files for more info)

All can be unipolar or bipolar.

Testing

All

Set voltage with %MYPVPREFIX%DFKPS_0X:SIM:VOLT Set current %MYPVPREFIX%DFKPS_01:SIM:RAW

8000

Interlock and power status can be testing by setting status PV: %MYPVPREFIX%DFKPS_0X:SIM:STATUS. To switch the power on put a ! as the first character to turn the interlock on place a ! as the 10th character.

8800/XXXX

Interlock and power status can be testing by setting status PV: %MYPVPREFIX%DFKPS_0X:SIM:STATUS. To switch the power off it must be a binary value with 2 digit set (e.g. 2) for the interlock it must be any value which is greater than 3 digit (e.g. 4). The value 6 would trigger both.

Connecting to an 8500 series through serial

The serial standard (RS232, 422 OR 485) used by a danfysik 8500 series is determined by the position of a jumper on the control board. This may need to be put in place for a new power supply.

As the MCR network uses RS422, the jumper position will need to be changed if the PSU was previously controlled by the MCR.

Only change the remote line. The local line changes how the PSU communicates with its front panel.

The steps to change the serial standard to RS232:

1. Contact a technician responsible for the PSU. They will open the control panel for you (behind the built-in display).
2. Move the jumper from either ST10 or ST11 to position ST9 (RS232 only).
   • The position of the jumper is illustrated in figure 13 of the 8500 series user manual on the manuals share
   • Which jumpers to short circuit (S/C) or leave as open circuit (O/C) are given in table 12.
   • Do not change the jumpers listed in table 11.

Note: There are two 8500 series which required a null modem on the 25-way connector.

LOQ/SANS2D Goudsmit magnet

• This magnet is driven by a 750A power supply, but can only actually take ~600A. The scientists have asked us to apply a limit of 738666 ppm on this Danfysik (which corresponds to a current of 554A)
  • This is true on both LOQ and SANS2D (as of May 2019)
• The magnet is calibrated. Calibration tables are start with Goudsmit_magnet and are located in C:\Instrument\Settings\config\common\magnets
• The magnet can be run in transverse or solenoid modes. As far as IBEX is concerned, this corresponds to a change of calibration files.