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Delta ME300 Variable Speed Drives

This guide will show you how to connect the Polar Gateway to Delta ME300 Variable Speed Drive. It will also take you through how to setup the parameters required on device 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 Delta ME300 Serial Parameters
 

Delta ME300 Connection Setup

Delta ME300 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.
Delta ME300 RS-485

Wire the RS-485 cable to allow communication with the Polar Gateway device. Connect A+ =>  pin 5: SG+ B => pin 4: SG-.

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 Variable Speed Drive.
  • Re-check the RS-485 twisted pair cables is correctly connected A+ =>  pin 5: SG+ B => pin 4: SG-.
4. Power on the system

Now you are ready to go, you can now switch on the Polar Gateway and the Delta ME300

5. Configure Delta ME300 Serial Parameters
In order for the Gateway to correctly communicate with the Delta ME300 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

NameDescriptionParameterDefaultRequired
Communication AddressSlave address09-0011
Communication SpeedBaud Rate09-019.69.6
Communication ProtocolProtocol09-041=7,N,2(ASCII)12=8,N,1 (RTU)

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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