National Instruments NI cDAQ-9188 Safety, Environmental, And Regulatory Information

SAFETY, ENVIRONMENTAL, AND REGULATORY INFORMATION
™
NI cDAQ -9188
8-Slot, Ethernet CompactDAQ Chassis
This document includes compliance precautions and connection information for the NI cDAQ-9188.
Note The guidelines in this document are specific to the NI cDAQ-9188. The other components in the system might not meet the same ratings. Refer
to the documentation for each component in the system to determine the safety and EMC guidelines for the entire system.

Safety Guidelines

Caution Do not operate the NI cDAQ-9188 in a manner not specified in this user manual. Product misuse can result in a hazard. You can compromise
the safety protection built into the product if the product is damaged in any way. If the product is damaged, return it to National Instruments for repair.
Note Because some C Series modules may have more stringent certification standards than the NI cDAQ-9188, the combined system may be limited
by individual component restrictions. Refer to the NI cDAQ-9188 Specifications for more details.
Hot Surface This icon denotes that the component may be hot. Touching this component may result in bodily injury.

Safety Voltages

Connect only voltages that are within these limits.
V terminal to C terminal
Measurement Category I is for measurements performed on circuits not directly connected to the electrical distribution system referred to as MAINS voltage.
MAINS is a hazardous live electrical supply system that powers equipment. This category is for measurements of voltages from specially protected secondary
circuits. Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage
sources, and electronics.
Caution Do not connect the system to signals or use for measurements within Measurement Categories II, III, or IV.
Note Measurement Categories CAT I and CAT O (Other) are equivalent. These test and measurement circuits are not intended for direct connection to
the MAINs building installations of Measurement Categories CAT II, CAT III, or CAT IV.

Safety Guidelines for Hazardous Locations

The NI cDAQ-9188 is suitable for use in Class I, Division 2, Groups A, B, C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC T4 Gc and Ex nA IIC
T4 Gc hazardous locations; and nonhazardous locations only. Follow these guidelines if you are installing the NI cDAQ-9188 in a potentially explosive
environment. Not following these guidelines may result in serious injury or death.
Caution Do not disconnect the power supply wires and connectors from the controller unless power has been switched off.
Caution When operating the cDAQ-9188 in hazardous locations, you must use the power connector with a power supply rated for hazardous
locations. The power supply included in the cDAQ-9188 kit is not hazardous locations-certified. Visit ni.com to find hazardous locations-certified
power supplies.
Caution Do not disconnect I/O-side wires or connectors unless power has been switched off or the area is known to be nonhazardous.
Caution Do not remove modules unless power has been switched off or the area is known to be nonhazardous.
Caution Substitution of components may impair suitability for Class I, Division 2.
Caution For Division 2 and Zone 2 applications, install the system in an enclosure rated to at least IP54 as defined by IEC/EN 60079-15.
Special Conditions for Hazardous Locations Use in Europe and Internationally
The cDAQ-9188 has been evaluated as Ex nA IIC T4 Gc equipment under DEMKO 12 ATEX 1202658X and is IECEx UL 14.0089X certified. Each device is
marked II 3G and is suitable for use in Zone 2 hazardous locations, in ambient temperatures of -20 °C ≤ Ta ≤ 55 °C.
Caution You must make sure that transient disturbances do not exceed 140% of the rated voltage.
30 V maximum, Measurement Category I