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Johnson Controls LIT-12011302, Руководство по установке, Страница: 9 / 9

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Published in U.S.A.

www.johnsoncontrols.com

LN Series LN-VSTAT and LN-PSTAT Sensors Installation Instructions

 9

Controls Group

507 E. Michigan Street
Milwaukee, WI  53202

Metasys® is a registered trademark of Johnson Controls, Inc.

All other marks herein are the marks of their respective owners.

© 2007 Johnson Controls, Inc.

For additional information and detailed explanations on 
network topology and wire length restrictions, refer to 
Echelon Corporation’s 

Junction Box and Wiring 

Guideline for Twisted Pair L

ON

W

ORKS

 Networks 

(Part # 005-0023-01).

Note:

Use proper network terminators depending on 

the type of network topology used. Failure to do so may 
result in communication errors between controllers. Do 
not use multiple gauges of cable on the same 
communication bus, as this may also result in 
communication errors.

Troubleshooting

Table 1:  Troubleshooting

Problem

Possible Cause

Solution

Temperature is not read 
properly

Wrong connection

Verify that every connection is properly wired.

Temperature setpoint is not 
read properly

Wrong connection

Verify that every connection is properly wired.

Software configuration

Verify that the setpoint is configured correctly according to 
the selected sensor model.

Содержание LIT-12011302

Страница 1: ... be present IMPORTANT Work in a static free area Discharge static electricity by touching a known securely grounded object Do not handle the controller without proper protection against static discharge Use a wrist strap when handling the controller Secure the wrist strap clamp to earth ground Compliance Statement Part 15 19 This device complies with Part 15 of the FCC Rules Operation is subject t...

Страница 2: ...sensors should not be installed on an outside wall Install the sensor away from any heat source Install the sensor away from discharge air grills Install the sensor away from areas where it can be affected by the sun Install the sensor in an area that provides proper device ventilation Ensure nothing restrains air circulation to the sensor Note The LN VSTAT and LN PSTAT sensors are not designed fo...

Страница 3: ...wall Ensure the correct side of the base is facing upwards 5 Remove the device and drill holes if necessary 6 Install anchors into the wall if necessary 7 Ensure the mounting surface is flat and clean 8 Insert screws in mounting holes of the base Do not overtighten the screws 9 Strip each wire 1 4 in 10 Gently push excess wiring back into the wall 11 Flip the printed circuit board back into place ...

Страница 4: ...ller The LN VSTAT and LN PSTAT sensors use a serial communication protocol and are designed to connect to the serial inputs labelled SMRT and SMRT on the LN VAVLF and LN VVTLF controller Note The LN VAVCF controller does not support the LN VSTAT and LN PSTAT sensors To wire a wall mounted LN VAV VVT controller 1 Remove the faceplate 2 Use a screwdriver to press down the tabs located on the bottom ...

Страница 5: ...controller before you can use the communication jack Typically these connections should have been made when the VAV controller and LN Sensor were first installed To connect the LN VSTAT sensors to an LN Sensor using an 1 8 in mono or stereo audio cable 1 Use the taps on the bottom of the sensor to remove the sensor face plate 2 Connect the SMRT and SMRT output terminals of the LN VSTAT sensors to ...

Страница 6: ...d LN PSTAT Sensors Installation Instructions 6 Connect 1 8 in Audio Plug from LN VSTAT Sensor Figure 8 LN Sensor Wiring LN VAV LN Sensor LN VSTAT Figure 9 LN VSTAT and LN PSTAT sensors Wired to LN Sensor Using an Audio Plug ...

Страница 7: ...work to avoid a short circuit Note The LN VSTAT and LN PSTAT sensors do not have an effect on the network topology for LON networks Note The Bus topology network configuration allow for easy network troubleshooting for LON communication wiring Topology Wiring Choices If the distance between the sensor and the controller stub length is less than 3 meters a bus topology must be used Figure 11 If the...

Страница 8: ...r The wiring scheme in figure is almost identical to a bus topology network but since the stub length exceeds 3 meters it becomes a free topology network which requires a free topology terminator CONTROLLER CONTROLLER CONTROLLER Bus Topology Terminator Stub Length 3 m Bus Topology Terminator Figure 11 Bus Topology Stub 3m CONTROLLER CONTROLLER CONTROLLER Free Topology Terminator Stub Length 3 m Fi...

Страница 9: ... Pair LONWORKS Networks Part 005 0023 01 Note Use proper network terminators depending on the type of network topology used Failure to do so may result in communication errors between controllers Do not use multiple gauges of cable on the same communication bus as this may also result in communication errors Troubleshooting Table 1 Troubleshooting Problem Possible Cause Solution Temperature is not...

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