INSTALLATION INSTRUCTIONS
NI TBX-2809
Screw Terminal Accessory for the NI SwitchBlock
This installation guide describes how to install and connect signals to the NI TBX-2809 screw
terminal accessory for use with NI SwitchBlock cards.
The NI TBX-2809 is an unshielded, DIN-rail mountable terminal breakout block that consists
of a printed circuit board with screw terminals that provide connections to all channels of a
single NI SwitchBlock card. The NI TBX-2809 includes a safety interlock resistor to engage the
NI SwitchBlock card’s safety relays, allowing connections to the NI SwitchBlock analog bus.
Specifications
Maximum voltage............................................. 150 V, CAT I
Maximum current ............................................. 1 A
Caution
The maximum voltage is limited to the lowest voltage of any component in
the NI SwitchBlock system. Review the specifications of the NI SwitchBlock carrier
and cards.
Caution
The NI TBX-2809 must be installed inside a suitably rated enclosure with
proper cable/wire strain relief(s) prior to use. There are no user serviceable parts
inside. Do
not
change or alter this product in any way.
Caution
NI products typically must be operated with shielded cables and accessories
to ensure compliance with Electromagnetic Compatibility (EMC) requirements. To
determine if shielded cables or accessories are required for the product that the
NI TBX-2809 will be used with, refer to the EMC specifications in the product’s user
guide or manual. If shielded cables or accessories are required for EMC compliance,
do not use unshielded cables or accessories unless they are installed in a shielded
enclosure with properly designed and shielded input/output ports, and are connected
to the NI product using a shielded cable. If unshielded cables or accessories are not
properly installed and shielded, the EMC specifications for the product are no longer
guaranteed.
Compatible DIN rails........................................ DIN EN 50 022
DIN EN 50 035
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