National Instruments CompactRIO sbRIO-9603 - Calculating the Power Requirement

1. Power off the power supply.
2. Install the ferrite on the negative and positive leads of the power supply.
3. Pass the leads through the ferrite twice.
Note Leave 50 mm to 75 mm (2 in. to 3 in.) between the ferrite and the end of
the leads.
4. Close the ferrite around the leads.
Calculating the Power Requirement
Notice Exceeding the power limits may cause unpredictable device behavior.
Total power requirement = P
int
+ P
DIO
+ P
5V
+ P
3.3V
+ P
USBTypeC
+ P
USB2.0
+ P
μSD
where
P
int max
is the power consumption by the NI sbRIO-96xx internal operation, including
integrated I/O functions
P
DIO
is the power consumption by the 3.3 V DIO pins across the RMC or DIO connectors
P
5V
is the power consumption by the 5 V voltage output across the RMC or DIO
connectors
P
3.3V
is the power consumption by the 3.3 V voltage output across the RMC connector
P
µSD
is the power consumption of a MicroSD card installed in the MicroSD port
P
USB Type-C
is the power consumption of a device plugged into the USB Type-C port
P
USB 2.0
is the power consumption of a device plugged into the USB 2.0 port
P
ETH
is 0.4 W, typical per port (included in P
int max
for the calculation)
P
SERIAL
is 0.4 W, typical per port (included in P
int max
for the calculation)
When calculating each component of the maximum power consumption the following
efficiency factors must be used:
η
3.3V
and η
DIO
= 80 %
η
5V
and η
USB
= 90 %
Note You must add 10% to the calculated or measured total power requirement to
account for transient and startup conditions.
44 | ni.com | CompactRIO Single-Board Controller with NI-DAQmx Hardware Installation Manual