How Do I Connect Wires to a cRIO/cDAQ Module that has a Spring Terminal Connector?

Updated Oct 9, 2018

Reported In

Hardware

  • NI-9205
  • NI-9206
  • NI-9213
  • NI-9219
  • NI-9220
  • NI-9235
  • NI-9264
  • NI-9375
  • NI-9974
  • BNC-2090
  • NI-9209
  • NI-9263
  • NI-9265
  • NI-9421
  • NI-9423
  • NI-9225
  • NI-9437
  • NI-9472
  • NI-9474
  • NI-9476
  • NI-9203
  • NI-9208
  • NI-9210
  • NI-9216
  • NI-9226
  • sbRIO-9213
  • sbRIO-9219
  • NI-9207
  • NI-9201
  • NI-9202
  • NI-9221
  • sbRIO-9205
  • sbRIO-9235
  • NI-9236

Issue Details

I have a new CompactRIO or CompactDAQ module with a spring terminal connector instead of the screw terminal connector I was expecting. What is the correct way to connect my wires to the spring terminal connector?

Solution

The spring terminal connectors have four columns and come in two types: one that interfaces with a small screwdriver or tool, and one that interfaces with orange tabs. They are compatible with 28 - 18 AWG wire (0.5 - 1.0 mm) and can be found on the following modules: 9205, 9206, 9213, 9219, 9220, 9235, 9264 and 9375.
 
Screwdriver Interface

The outside columns are circular and accept stripped wire, and the two inner columns are square and are used to control the spring mechanism.

Complete the following steps to attach a wire to this type of spring terminal connector:
 
  1. Strip the wire about half an inch.
  2. Insert a thin, flat screwdriver into the square hole adjacent to the circular hole you wish to use.
  3. Use the tip of the screwdriver to push the small metal piece towards the circular hole, and slide the stripped wire into the circular hole.
    1. Do not force the metal piece down. This action can bend the metal down and make it unusable. Make sure that the tool slides in between the wall of the socket and the small metal piece.
  4. Release the screwdriver from the square hole and the wire will be locked in place. 

Please refer to the image below to see how the piece should move.
 
 
Orange Tab Interface

The two inner columns are circular and accept stripped wire, and the two outer columns contain orange buttons that can be depressed to open the adjacent wire terminal.

Complete the following steps to attach a wire to this type of spring terminal connector:
 
  1. Strip the wire about half an inch.
  2. Press down on the orange button, and insert the stripped end of a wire in the corresponding circular hole.
  3. Release the button to clamp the wire in place.

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