301923 ES-T Supp Manual.pdf

User Guide Supplemental
Information
EpiSensor
Force Balance
Accelerometer
Model FBA ES-T
Document 301923
Revision NC
July 2009

Document 301923, Revision NC
Table of Contents
Introduction ......................................................................................................................... 2
Isolated Supply Option ....................................................................................................... 2
Isolated Supply Electrical Interface .................................................................................... 4
+12 VDC Option (Non-Isolated) ........................................................................................ 5
Cable drawing for ES-T to Rock or Q330 digitizers .......................................................... 6

Document 301923, Revision NC
Introduction
The EpiSensor ES-T with the single supply option has been changed to improve
performance. To take advantage of this improvement the ES-T may be ordered preconfigured
for isolated supply operation. This requires different cable wiring. If you wish to use existing
cables that are wired for the older single supply option, you can order the ES-T preconfigured
for the +12V Supply Option or you can remove the upper housing and reconfigure X6 and
X25. Refer to Kinemetrics EpiSensor User Guide, document 301900, revision D for other
information.
Isolated Supply
Option
The new Isolated Supply Option separates the power supply common from the signal
common. This is done by using the pin normally used for the -12V supply in the +/-12V
configuration. To accomplish this, a daughter board with configuration jumpers was added to
the oscillator board. To use the isolated ground option these two jumpers must be placed
between pins 1 and 2 on X6 and X25.
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Figure 1 - Isolated Ground Configuration
ES-T User Guide Supplemental Information 3

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Isolated Supply
Electrical Interface
When using the Isolated Supply Option the ES-T should be wired according to the table
below. There is a cable drawing at the end of this document for connecting ES-Ts to Rock
and Q330 digitizers.
Pin Name I/O Description
L X + signal Output + X axis signal output
M X – signal Output – X axis signal output
N X shield X shield
A Y + signal Output + Y axis signal output
B Y – signal Output – Y axis signal output
P Y shield Y shield
C Z + signal Output + Z axis signal output
D Z – signal Output – Z axis signal output
R Z shield Z shield
E Cal Input Calibration input to excite the calibration coils of all three
sensors. Only active when calibration coil enable (CCE) is
active.
A voltage of 2.5V will produce a nominal output equivalent
to an input of .125g.
F CCE Input Calibration coil enable. Normally the CCE must be
disconnected or set at a voltage below 0.5 volts. To enable the
calibration coil apply a signal of +5 to +12 volts to this pin.
Can be driven to –12 volts in the disable state.
J + 12 V Input +12 VDC power input.
H Isolated ground Input +12 VDC power return
U PGP ground Instrument case ground
K Ground
G Ground
S Ground
T Ground
V Ground
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+12 VDC Option
(Non-Isolated)
If you’ve received your ES-T preconfigured for isolated operation but you are using existing
cables for the +12 VDC non-isolated version, you can reconfigure your ES-T to work with
these cables. Remove the top housing of the ES-T and change the jumper settings on the
daughter board. Place the two jumpers between pins 2 and 3 on X6 and X25.
Figure 2 - Non isolated ground configuration
In this case continue to use the wiring information from the current ES-T User Guide.
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Document 301923, Revision NC
Cable drawing for
ES-T to Rock or
Q330 digitizers
ES-T User Guide Supplemental Information 6