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Woodward easYgen 3400/3500 Generator Controller

This guide will show you how to connect the Polar Gateway to Woodward easYgen 3400-3500 Generator Controller. It will also take you through how to set up the parameters required easYgen 3400-3500 drive to ensure communications to the Gateway.

Steps to follow:

  1. Connect power to the Gateway.
  2. Connect RS-485.
  3. Final checks.
  4. Power on the system.
  5. Configure the Woodward easYgen 3400/3500 Serial Parameters

Woodward easYgen 3400/3500 Connection Setup

Woodward 3400/3500 Wiring diagram
Wiring Diagram
1. Connect power to the Gateway.
Power Polar Gateway

Wire the Polar Gateway to a 12-24 V DC power supply. Connect the positive wire to the positive terminal and the negative wire to the negative terminal.

2. Connect RS-485.
Polar Gateway RS-485

Wire the RS-485 cable to allow communication with the Polar Gateway device. Connect A+ => Pin 9 A’ (TxD-)  and B- => Pin 4 B'(TxD+).

Note: The Polar Gateway connects to thee 

3. Final checks
Before you switch on the device make sure you have done everything correctly in the previous steps.
  • Make sure the power is OFF while doing the cable wiring.
  • Re-check if there are no short circuits.
  • Check if the power cables are not loosely wired to the Gateway.
  • Check if the power cables are not loosely wired to the Generator Controller.
  • Re-check the RS-485 twisted pair cables is correctly connected A+ => Pin 9 A’ (TxD-)  and B- => Pin 4 B'(TxD+).
4. Power on the system

Now you are ready to go, you can now switch on the Polar Gateway and the Woodward easYgen 3400/3500.  

5. Configure Woodward easYgen 3400/3500 Serial Parameters
In order for the Gateway to correctly communicate with the Woodward easYgen 3400/3500 controller, there will need to be some changes made to the communication parameters. 

Note: It is critical to change the default settings to reflect the table below.

Serial Communication Setup

Name Description Parameter Default Required 
Communication Address Serial node address/Unit ID Modbus Slave ID1 1 
Serial speed Baud rate Baudrate 19.29.6
Stop bitsStop bitsStop bitsOneOne
Full-, halfduplex modeFull-, halfduplex modeFull-, halfduplex modeFullduplexHalfduplex
Protocol Communication protocol Enable Modbus protocolYesYes

You may now sign in to the Polar Portal to monitor the device remotely, the button on the right will take you through a setup process.

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