Wire sensors to the I/O interface

This section explains how to wire sensors to the Connect Sensor+, using the cable glands on the device.

Note Using gaskets, seals, glands or plugs other than those supplied by Digi may void certifications and regulatory approvals.

To wire third-party sensors to the Connect Sensor+ I/O interface, you need the following equipment:

• A slot-headed 0.4 x 2.5 x 80 mm screwdriver
• Wire size 1.29-0.25 mm (16-30 AWG) for each pin connector

  Note All external or field wiring must be in accordance with NFPA 70 Article 501.10(B).

To wire sensors to the I/O interface:

1. Open the Connect Sensor+ enclosure and disconnect all power sources.

   CAUTION! You must disconnect power from the Connect Sensor+ before wiring sensors to the I/O interface.

2. Unscrew the gland cap and remove the plastic seal.
   

   Note For an unused cable gland, make sure the plastic hole cover stays in place to keep it sealed. Over tightening an unused cable gland cap can force out the plastic hole cover, unsealing the cable gland.

3. Run the sensor cable through the cap and thread it through the cable gland.
   
4. Use the screwdriver to loosen the I/O interface connector screw.
5. Slide the wire into the terminal side of the connector.
6. Tighten the screw to 0.2 N-m to secure the wire to the connector.
   
7. Seal and secure the wire.
   1. Hold the cable gland and tighten the interior nut to secure the rubber seal between the device and the cable gland. This ensures that the rubber seal does not buckle.

      Note If the rubber seal is buckled, water intrusion may occur.

   2. Tighten the cap to the cable gland to seal and secure the wire.

8. Close the cover on the device. The cover snaps into place.

   Note The Connect Sensor+ enclosure may require some force to close. This is intended as part of the design to ensure a robust seal in damp or dusty environments. For details about closing the Connect Sensor+ enclosure, see Closing the Connect Sensor+.