National Instruments 7334, 7344 System Safety, Motion I/O

AppendixA Specifications
©NationalInstruments Corporation A-3 7344/7334Hardware User Manual
Voltage range..................................0 to 5 V
Outputlow voltage .................. < 0.6 V at 64 mA sink
Outputhigh voltage ................. Open collector with built-in
3.3 kΩpull-up to +5 V
Polarity............................................Programmable, active-high
oractive-low
System Safety
Watchdog timerf unction....................... Resets board to startup state
Watchdogtimeout ...........................63 ms
Shutdown input
Voltage range..................................0 to 12 V
Inputlow voltage..................... 0.8 V
Inputhigh voltage ....................2 V
Polarity.....................................Rising edge
Control............................................ Disable all axes and
command outputs
Motion I/O
Encoder inputs........................................Quadrature, incremental,
single-ended
Maxcount rate ................................ 20 MHz
Minp ulse width .............................. Programmable; depends
on digital filter settings
Voltage range..................................0 to 12 V
Inputlow voltage..................... 0.8 V
Inputhigh voltage ....................2 V
Mini ndex pulsewidth .................... 60 ns
Forward, reverse, and home inputs
Numberof inputs ............................ 12 (3 per axis)
Voltage range..................................0 to 12 V
Inputlow voltage..................... 0.8 V
Inputhigh voltage ....................2 V
Polarity............................................Programmable, active-high
oractive-low