Emerson 814-3550 User manual

Document Part # 026-4247 Rev 4 Page 1 of 2
©2017 Emerson Climate Technologies Retail Solutions, Inc. This document may be photocopied for personal use.
Visit our website at http://www.emersonclimate.com/ for the latest technical documentation and updates.
For a copy of the full Wireless User Manual (P/N 026-1734), go to
http://www.emersonclimate.com/qrcode004 to download it or
contact Emerson Retail Solutions Customer Service at
770-425-2724.
Emerson’s Wireless Module System allows for quickly and easily
monitoring a variety of Refrigeration and HVAC applications by
connecting temperature probes, product simulators, humidity
probes or switches to the Wireless Module that transmits these
signals to the Wireless Gateway. The Gateway translates the
signal into usable information to send to the building controller,
E2 (version 4.08 or higher) or Site Supervisor, where the data
can be logged into reports or used by algorithms to make
control decisions. The Wireless Gateway can receive signals
from up to 99 Modules. The Wireless Module is flexible and
configurable with up to three (3) analog or digital inputs that
can be used for a variety of applications in Refrigeration and
HVAC, eliminating installation materials and costly
labor-intensive wiring.
Installing the Wireless Gateway
Installing the Emerson Wireless Gateway for E2 involves
mounting and powering the device, and connecting to E2’s
RS485 network.
Figure 1 - Wireless Gateway Enclosure Dimensions
The Emerson Wireless Gateway requires 24VAC power from a
Class 2 Transformer.
Because the Gateway is usually mounted away from the
transformer, 18 AWG wire should be used. The AC voltage at
the Gateway needs to be at least 19 Volts.
Figure 2 - Emerson Wireless Gateway Board
Installing Network Cable
Each E2 that will receive a value from an Emerson Wireless
Module must have an Emerson Wireless Gateway installed on its
RS485 Network. For E2 controllers, the Gateway will be installed
on an RS485 network running MODBUS protocol.
Using a shielded three-conductor network cable (Belden #8641
or equivalent), connect the RS485 Network wire from E2 to the
three-terminal connector on the Wireless Gateway board as
shown below. For further information about how RS485
networks are configured, refer to the E2 User Manual
(P/N 026-1614).
Figure 3 - Connecting the Gateway to the RS485 Network
Input Voltage 24VAC, Class 2, 50/60Hz
Power 10VA
Table 1 - Wireless Gateway Power Requirements
Quick Setup Guide
Emerson Wireless Gateway and E2

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The contents of this publication are presented for informational purposes only and they are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or
applicability. Emerson Climate Technologies Retail Solutions, Inc. and/or its affiliates (collectively “Emerson”), reserves the right to modify the designs or specifications of such products at any time without notice. Emerson does not
assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any product remains solely with the purchaser and end-user.
026-4247 Emerson is a trademark of Emerson Electric Co. ©2017 Emerson Climate Technologies Retail Solutions, Inc. All rights reserved.
Document Part # 026-4247 Rev 4 Page 2 of 2
Termination should only be done at the two end points of the
network. Set termination as appropriate as shown in Figure 4.
Figure 4 - Gateway MODBUS Jumper Configuration
Mounting and Installation Tips
• Gateway Signal Range: 100-ft. radius.
• Mount the Gateway on the ceiling, parallel to the floor.
• Up to 99 Wireless Modules per Gateway.
• Position the Module with the Emerson logo pointing
towards the Gateway for maximum performance.
• Try to avoid metal obstructions in the line of sight.
• Mount the Module in a location where 200 lux of light is
visible to the solar cell for five (5) or more hours per day.
• If possible, commission a Module from its mounting
location to verify good positioning.
• Check the signal strength on the E2 prior to permanently
mounting the Modules.
• Gateways can be configured as a Repeater/Gateway in
larger coverage areas or low cost Repeaters are available
for applications not requiring additional Gateways.
Figure 5 - Overlapping Coverage Area
Set Up and Commissioning in E2
For complete instructions on set up and commissioning, refer to
the Wireless User Manual (P/N 026-1734).
Note: E2 Firmware version 3.08/4.08 is required.
1. Set the desired COM port for MODBUS.
(Menu,7,4, 1,C:3 Serial tab)
• Baud: 19.2 Kbaud
• Data Size: 8
• Parity: Even
• Stop Bits: 1
2. Add a Wireless Gateway in the Network Setup screen
(Menu, 7,7,2,C:3 ECT tab) by changing the quantity of
Wireless GW to 1.
3. After adding the Gateway, go to the Network Summary
screen and select Wireless Gateway and then Commission
(Menu,7, 7,1,F4: Commission).
4. Set the MODBUS address to 247 to match the default
address in the Gateway (this address is fixed in the
Gateway). Enter 247 or scroll down to 247 and press
Enter.
5. Press Enter to complete Commissioning.
Part Number RF Description
814-3550 Wireless Gateway/Repeater 902MHz
814-3560 Wireless Repeater 902MHz, 24VAC
814-3570 Wireless Repeater 902MHz, 120VAC
814-3600 Wireless Module 902MHz with User Selected
Inputs; Clean Mode
814-3653 Wireless Module 902MHz, 3 Temp; Clean Mode
with Molex Connector
140-6802 Wall Mount 24VAC, 20VA Class 2 Transformer
Table 2- Ordering Information