Mts FlexTest Models 200 Manual de usuario Pagina 172

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MTS FlexTest® Models 40/60/100/200 Controller Hardware
Model 494.21 Multi-Range DUC with Acceleration
Mezzanine Cards
172
Excitation Failure
Interlocks
An over- or under-current condition generates a
system interlock.
AC/DC overcurrent: 105 mA typical
AC/DC undercurrent: 1–2 mA typical
Note Undercurrent detection may not work
properly for AC transducers with a DC
resistance greater than 180 ohms. In this
instance, the detection circuit may
constantly report an undercurrent condition.
You may need to configure your controller
software to disable the Excitation Failure
interlock for that input.
Excitation Failure interlocks are available for
quarter-, half-, and full-bridge DC configurations and
for AC configurations.
Smart Transducer
Interface
IEEE 1451.4 Class 2
*. The DC gain accuracy specification includes the effects of linearity
and resolution.
†. DC mV/V (ratio-metric) accuracy specifications apply in 8-wire mode
only.
‡. The DC excitation accuracy and loading specifications apply in 8-
wire mode only.
Model 494.21 Specifications (part 3 of 3)
P
ARAMETER SPECIFICATION
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