Operator's Manual
Issue 14
/
Mar 2016 / UMC0071
Mercury
iPS
©2016 Oxford Instruments NanoScience. All rights reserved.
Page
44
4.4 The Configuration Table (Figure 9)
4.4.1 Config
The value of the “Config” parameter defines the configuration of the power supply units in the
control loop architecture. The Mercury control architecture uses “groups” to define how the
individual power supply units are being used in the power supply system. The most common
configuration is Z-axis only (Solenoid) and “Parallel”. This means that the high-current outputs
of the iPS-M (master) unit and iPS-S (slave) unit(s) are connected in parallel to form a higher
current ±10V power supply. For example, 1 x iPS-M (±62.5A, ±10V) plus 1 x iPS-S (±62.5A,
±10V) connected in parallel to form a (±125A, ±10V, nominally an iPS120-10) power supply.
To configure the Z-axis as series units select “Series”. In the above example 1 x iPS-M
(±62.5A, ±10V) plus 1 x iPS-S (±62.5A, ±10V) connected in series to form a (±62.5A, ±20V,
nominally an iPS60-20) power supply.
It is also possible to configure units as a series-parallel, or “Matrix” combination (see below).
For example 1 x iPS-M (±62.5A, ±10V) plus 5 x iPS-S (±62.5A, ±10V) connected in 3 parallel
sets of series pairs to form a (±187.5A, ±20V, nominally an iPS180-20) power supply. More
details on how to configure this are listed below.
4.4.1.1 Eng Config
Having selected the “Config” parameter for each axis (Z only for Solenoid and Split Pair. Z, Y
and X for Vector Rotate) tap “Eng Config” to allocate the Mercury units to the correct
configuration groups so that the system will function correctly. If the “Parallel” configuration has
been selected for the Z-axis the Z-axis grouping table will be a row. Tap on the left cell of the
table row to bring up a list of the available unit. Select the unit from the list (e.g. PSU.M1 for the
master) and tap OK. The name “PSU.M1” will now appear in the cell (Figure 10). Tap the next
cell to the right and select the next unit for the Z-axis group (named “GRPZ”). There will always
be a blank box on the right-hand end of the row.
