Genesis GEN3t, Руководство пользователя, Страница: 307 / 1124

Shunt verification
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Setup
A shunt resistor can be used to verify the sensitivity of a bridge. Connect a shunt
resistor to Resistor R4 (A
-
C) or Resistor R3 (C
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D) of the bridge and activate the
shunt within Perception, an output signal that simulates strain (a deflection) is
produced. With known resistor and excitation values, the theoretical deflection
can be calculated and compared to the measured deflection value.
The following options are provided:
l
Select the active bridge arm: A
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C or C
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D.
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Select between an internal or external shunt resistor.
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When internal is selected, then select between:
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Factory
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installed: 20 kΩ or 100 kΩ precision resistors.
l
User installed: This resistor needs to be added to the plug
-
in module
in the location marked CAL . Please refer to
Figure 12.31 on page 290 for electrical/schematic details and to
Figure 12.32 on page 292 for mechanical/location details.
Additional wiring when using remote calibration/shunt
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Connect point A of bridge to Pin 11 (Remote Cal +) of the connector.
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Connect point D of bridge to Pin 12 (Remote Cal
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) of the connector.
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Connect point C of bridge to Pin 15 (Remote Cal common) of the connector.
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In addition: when using an external shunt resistor, connect this resistor
between Pin 14 (External Shunt A/D) and Pin 13 (External Shunt Common)
of the connector.
For an example, please refer to
Figure 12.37 "Full-bridge with remote sensing and remote calibration " on
page 295.
Perception settings
1 Go to the Settings sheet.
2 In the task pane, select the Bridge in the Input section.
3 Select one or more channels.
GEN3t
I3995-3.1 en HBM: public 307