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NI 9759 User Manual
Note
NI Powertrain Control modules are not compatible with the National
Instruments CompactDAQ chassis.
You can use NI Powertrain Control modules with NI cRIO-911
x
, NI cRIO-907
x
, and NI R Series
Expansion systems under the following conditions:
•
Leave one empty chassis slot between NI Powertrain Control modules and other NI
modules.
•
Maintain an ambient system operating temperature of 0 °C to 45 °C.
Note
Typical specifications of National Instruments modules might not apply when
used in a system with NI Powertrain Control modules.
Note
National Instruments guarantees warranted specifications for all National
Instruments modules except thermocouple modules when used in a system with
NI Powertrain Control modules.
Note
National Instruments recommends the NI 9214 for thermocouple
measurements in CompactRIO systems using NI Powertrain Control modules.
Note
NI Powertrain Control modules do not support Scan Interface mode,
auto-detection, or ID mode.
H-Bridge Drivers
The NI 9759 includes a CompactRIO (cRIO) module for driving passenger car electronic throttle
bodies up to 70 mm in diameter. A typical example of electronic throttle bodies which the
NI 9759 is capable of driving, is the Bosch DV-E5 series which range from 32 mm to 68 mm in
diameter. The NI 9759 is capable of driving most other electronic throttle bodies within that size
range.
Each H-Bridge circuit is capable of driving 3 A continuously and a 6 A peak. It provides current
sensing feedback as well as over-current and over-temp protection. In the case of a short circuit,
where 10 A is exceeded or a temperature of 140 °C is exceeded within the driver FETs, a fault
flag will be generated and the circuit will shutdown until the fault condition is removed. Monitor
the current and temperature values and disable the circuit programmatically if current exceeds
6 A or the internal module temperature exceeds 85 °C. The temperature is automatically
monitored within the
throttle_rt_control.vi
.
Each H-Bridge circuit automatically eliminates shoot-through current and provides internal
clamp diodes for inductive loads.
