National Instruments Eight-slot USB Chassis NI cDAQ-9172 - Manual (Page 5)

© National Instruments Corporation 5 NI cDAQ-9172 User Guide and Specifications
Safety Guidelines
Operate the NI cDAQ-9172 chassis only as described in this user guide.
Note Because some C Series I/O modules may have more stringent certification standards
than the NI cDAQ-9172 chassis, the combined system may be limited by individual
component restrictions. Refer to the
Using the NI cDAQ-9172 section of this document for
more details.
Caution The NI cDAQ-9172 chassis is not certified for use in hazardous locations.
Hot Surface This icon denotes that the component may be hot. Touching this component
may result in bodily injury.
Safety Guidelines for Hazardous Voltages
If hazardous voltages are connected to the module, take the following
precautions. A hazardous voltage is a voltage greater than 42.4 V
pk
or
60 VDC to earth ground.
Caution Ensure that hazardous voltage wiring is performed only by qualified personnel
adhering to local electrical standards.
Caution Do not mix hazardous voltage circuits and human-accessible circuits on the same
module.
Caution Make sure that chassis and circuits connected to the module are properly
insulated from human contact.
Caution The NI cDAQ-9172 chassis provides no isolation, but some modules offer
isolation. Follow the safety guidelines for each module when using hazardous voltage.