Rockwell Automation Publication ICSTT-RM448M-EN-P - February 2021 115
Chapter 6 System Startup
Power Distribution and First
Power Up
The power distribution and first power up verifies that the power distribution
circuits function as designed and as detailed in the drawings. It shows the
correct voltages are appearing, and only in the correct places. It also provides
an opportunity to verify correct operation of any power indicators outside the
controller itself.
Do the following:
1. Make sure all modules are removed.
2. Trip all circuit breakers and disengage all power distribution fuses and
field fuses.
3. Apply power to the incoming power terminals.
4. It is good practice to switch on power supplies to field devices before
supplies to the controller. Devise a formal sequence in which to switch on
individual circuits.
• In sequence, check each circuit breaker or fuse for zero volts on the
destination side, and then close the circuit breaker or fuse and verify that
the appropriate voltage appears.
• Check that any associated power indicator is lit.
• As each circuit breaker is tested, leave the breaker in the ‘on’ position so
that any unwanted connection between different power circuits can be
detected.
5. Trip and re-instate each circuit breaker in turn and verify the correct
circuits are isolated and restored. Similarly disengage and replace each
fuse and verify the associated circuits.
6. At the same time verify correct operation of any power indicators
supplied with the system.
Startup Process Once the procedures for power distribution tests have been successfully
completed, the controller is ready for installation of its modules and its second
power up. The installation process should be completed in the following order:
1. Switch off power to the controller — both field power and controller
power sources.
2. Make a record of the module and base unit serial numbers for future
reference.
3. Reinstate the power.
4. Install the modules in the following sequence.
5. Install the program enable key to the connector labeled KEY on the
processor base unit.
6. Install the first Processor module.
• Refer to the Processor Module startup process.
7. Install the second or the third processor module (if required).
• Refer to the Processor Module startup process.
8. Install the I/O modules.
• Refer to the I/O Module startup process.
9. Check system status indications show the system is on-line and
operating as expected.
NOTE Before you begin this task, you must have checked the power
distribution integrity.
To Next Page
Loading...
Need help?
General
