NI 9401 Operating Instructions and Specifications
10
ni.com
Overcurrent Protection
Overc
u
rrent protection on the NI 9401 allows only a specified
amo
u
nt of c
u
rrent for switching DIO channels or so
u
rcing the
o
u
tp
u
t load. If the NI 9401 goes into an overc
u
rrent state, by
exceeding the specified maxim
u
m switching freq
u
ency or the
o
u
tp
u
t load, the mod
u
le power s
u
pply begins to drop in voltage
u
ntil it completely t
u
rns off or the overc
u
rrent condition is
removed. When the mod
u
le is in this state, it can accept new line
direction config
u
ration and o
u
tp
u
t state data b
u
t cannot pass valid
inp
u
t data to the software. Refer to the
section for
more information abo
u
t the maxim
u
m switching freq
u
ency and
o
u
tp
u
t load for each channel.
