Schneider Electric Smart Sensor Series Installation Guide

Field Devices Sensors	1
Field Devices Sensors

Smart Sensor Series

Installation Guide

Installation

Installation consists of mounting the module to the wall then wiring power and data connections to a controller.

The sensor can be mounted directly on drywall, or on any electrical outlet box with no adapters required. This sensor is for indoor use only and is not suitable for use where condensation may occur.

To install the base

Note: If you are mounting the sensor to an existing electrical box, skip steps 1, 2 and 3. To prevent drafts from affecting the Sensor reading, cover the openings in the back of the base.

1.Place the base on the surface of the wall area where the sensor is to be mounted and mark the location of at least three mounting holes.

INSTALLING THE SENSOR AND BASE

To remove the sensor

The sensor is fastened to the base using Allen screws.

1.Using a #6 Allen tool, turn the two Allen screws located in the bottom of the sensor cover clockwise (inward) until the sensor lifts off easily.

Figure 2. Placement of the base.

2.Drill the marked holes and insert wall anchors into the surface.

3.Mount the base using at least three screws.

4.Guide your facility wiring into the large opening of the base.

5.Connect your wires to the probe wires that are part of the cover assembly using wire nuts.

6.Collect any slack wire, fold and tuck into the base.

7.Place the cover on the mounted base.

8.Secure the cover by turning the Allen screws counterclockwise (outward) until the cover is locked in place. Refer to Figure 1.

Figure 1. Turn two Allen screws clockwise.

2.Remove the sensor by lifting the front bottom outward.

Field Devices Sensors

SMART SENSOR CONNECTION

The Smart Sensor bus consists of a three wire connection between the sensor and the controller, using the dedicated three-terminal connector on the field level controller.

•RET

•IN x

•SPWR

The following illustrates the connection between the two units.

Figure 3. Smart Sensor wiring diagram.

TEMPERATURE INPUT TROUBLESHOOTING

1.Disconnect the wiring to the input and connect an ohm meter directly across the input wires at the controller. Verify the measurement against the resistance to temperature chart found below.

2.Measure the resistance directly at the probe. If there is a significant difference between the resistance measured at the probe and at the controller, then there is a resistance problem in the wiring, which will affect the reading.

Note: When the controller no longer considers an input reading to be valid, it sets the ElecValue to 999.9. Each controller has two additional internal inputs. One is hard-wired to the reference channel and the other is connected to ground. These two inputs are used for continuous software calibration of the input circuit. If at any time either of these two inputs reads out of a predefined range, then the input routine will set the ElecValue of all inputs to 999.9.

chneider Electric | Buildings

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F-27637-3

May 2014 tl

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