NI 9882 Operating Instructions
4
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Caution
For Zone 2 applications, install a protection
device between the CAN signals and the NI 9882 CAN
pins. The device must prevent the CAN Port-to-COM
voltage from exceeding 55 V if there is a transient
overvoltage condition.
Special Conditions for Safe Use in Europe
This equipment has been evaluated as Ex nA II T4 equipment
under DEMKO Certificate No. 07 ATEX 0626664X. Each module
is marked
II 3G and is suitable for use in Zone 2 hazardous
locations.
Wiring the NI 9882
The NI 9882 has one 9-pin male D-Sub connector that provides
connections to a CAN bus. The NI 9882 has pins for CAN_H and
CAN_L, to which you connect the CAN bus signals. Connect these
signals using twisted-pair cable.
The port has two common pins (COM) that are internally
connected to the module’s isolated reference and serve as the
reference ground for CAN_H and CAN_L. You can connect the
CAN bus reference ground (sometimes referred to as CAN_V–) to