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NI 9144 User Guide and Specifications
MTBF
MTBF................................................................458,557 hours at 25 °C, 77 °F; Bellcore Issue 6
Note
Contact NI for Bellcore MTBF specifications at other temperatures or for
MIL-HDBK-217F specifications. Go to
ni.com/certification
and search by
model number or product line for more information about MTBF and other product
certifications.
Power Requirements
Caution
You must use a National Electric Code (NEC) UL Listed Class 2 power
supply with the NI 9144 chassis.
Recommended power supply............................48 W, 24 VDC
Power consumption...........................................20 W maximum
Chassis input range ...........................................9 to 30 V
Physical Characteristics
If you need to clean the controller, wipe it with a dry towel.
Screw-terminal wiring
Gauge ........................................................0.20 mm
2
(24 AWG) to 2.1 mm
2
(14 AWG)
copper conductor wire with 5 mm (0.20 in.) to
6 mm (0.24 in.) of insulation stripped from
the end
Temperature rating ....................................85 °C
Wires per screw terminal ..................................One wire per screw terminal
Torque for screw terminals ...............................0.2 N · m to 0.25 N · m (1.8 lb · in. to 2.2 lb · in.)
Connector securement
Securement................................................Screw flanges provided
Torque for screw flanges...................................0.3 N · m to 0.4 N · m (2.7 lb · in. to 3.5 lb · in.)
Weight ...............................................................906 g (31.9 oz)
Safety and Hazardous Locations Standards
This product meets the requirements of the following standards of safety for electrical equipment
for measurement, control, and laboratory use:
•
IEC 61010-1, EN 61010-1
•
UL 61010-1, CSA 61010-1
•
EN 60079-0:2012, EN 60079-15:2010
•
IEC 60079-0: Ed 6, IEC 60079-15: Ed 4
