beautypg.com

Procedure, Isolate the relay trip contact, Apply ac or dc control voltage to the relay – Rockwell Automation 825-P Modular Protection System for Motors User Manual User Manual

Page 148: Enter the relay settings for your application, Verify the relay ac connections

background image

148

Rockwell Automation Publication 825-UM004D-EN-P - November 2012

Chapter 11 Testing & Troubleshooting

PC with Serial Port, MPS Explorer software, and serial communication
cable

Terminal Emulation Software

Serial Communication Cable

AC and DC Elementary Schematics

Wiring Diagrams (for this relay installation)

Continuity Tester

Protective Relay AC Test Source

Minimum: single-phase voltage and current with phase angle control

Preferred: three-phase voltage and current with phase angle control

Procedure

1.

Remove the control voltage and AC signals from the 825-P by opening the
appropriate breakers or removing fuses.

2.

Isolate the relay trip contact.

3.

Verify the correct AC and DC connections by performing point-to-point
continuity checks on the associated circuits.

4.

Apply AC or DC control voltage to the relay.

5.

After the relay is energized, the front panel green

ENABLE LED

illuminates.

6.

Connect a PC to the relay using an appropriate serial cable.

7.

Start the MPS Explorer software and establish communication with the
relay.

8.

Set the correct relay time and date using either the front panel or MPS
Explorer software.

9.

Enter the relay settings for your application.

10.

If you are connecting an external RTD scanner, follow the substeps below;
otherwise continue with Step 11.
a. Connect the fiber optic cable to the module fiber optic output.
b. Plug the relay end of the fiber optic cable into the relay fiber optic input.

11.

Verify the relay AC connections.