Wired MyStat

| Overview

Wired MyStat is a new introduction within the ClimaVision systems. This aspect lets the users wire a MyStat to a CCU to aggregate data from the MyStat to the cloud and consume the control sequences from the CCU for its operation.

This helps users wire more MyStat in the ClimaVision BMS system, in geographies with limited RF bands.

It also enables the MyStat usage in an External BMS (BACnet/Modbus), that does not support wireless communication.

| Example

Singapore is a geography where only the 9th and 10th RF channels are made available for the BMS activities. This limits the users to only bands with 9000- 9999 & 10000 to 10999 available for wireless connection and communication.

The wired MyStat is an excellent choice for geographies with such restrictions.

| Wiring

Wiring a MyStat is as easy as it is to connect the MyStat wirelessly. 

You can use an RS485 Daisy Chain Adapter (7C-WA-C5X-X) to wire Multiple MyStat in a network.

Note: The RS485 cable is only used for communication, and the MyStat are powered by the 24V power supply, which can also be daisy-chained for better and easier wiring.

One end of the above-mentioned Daisy Chain Adapter goes into the RS485 port of the MyStat

The other end of the Daisy Chain Adapter uses a wire as shown below to continue the daisy chain for communication.

The wires in the communication cable (RS485 system/ twisted pair shielded cable) are connected to terminals A & B of the 6-terminal end.

Note: A Belden RS485 cable is the preferred make.

When the above wire and adapter are used, the following illustrated connection is achieved

The actual wired setup is achieved as below, from a test setup. HyperStat photos are for illustrative purposes.

The below image shows the daisy-chained MyStat with 24V power wires and RS485 communication wiring.

Note: Based on the connection requirements in an actual field scenario the twisted pairs of wires cable length would vary.

| Termination at CM Board/CCU/ External BMS (BACnet/Modbus).

The wires are terminated at the CM Board using the same RS485 Daisy Chain adapter (7C-WA-C5X-X) as below.

And terminated at the External BMS, as below.

| Setting MyStat for Wired Communication and Control

When a MyStat is used in a wired environment the configuration will have to be set in the device to support the communication.

For more information on modifying the setting in the MyStat device for wired communication support refer to Setting SmartNode for Wired Communication & Control

| Feature Availability Versions