DANGER!
Hazardous live currents and voltages. Do not touch any terminals, especially the AC measurement inputs
and the relay terminals. Touching the terminals could lead to injury or death.
1.2.2 Design, drawings and FAT test
These commissioning guidelines assume that all of these tasks are completed before the commissioning:
1. Control system design
• System single-line drawing created and broadcast to the controllers
• Controllers allocated and configured for their unique controller ID
• I/O configuration created and written to each controller
• Parameters created and written to each controller
• Optional: CustomLogic created and written to each controller
2. System and switchboard drawings completed
3. Factory acceptance test (FAT) completed
1.2.3 Hot commissioning and retrofits
These commissioning guidelines assume that the system is not live and that the system is new.
Hot commissioning
Hot commissioning is possible, that is, you can commission the controller(s) as part of a live system. However, in addition the
normal commissioning risks, the live system itself presents challenges and risks that must be anticipated and mitigated.
DANGER!
For a hot commissioning, qualified and experienced personnel must carefully consider the effect of each
commissioning step. Mistakes may cause death, personal injury, and/or damage to equipment.
Retrofits
Retrofits are possible, that is, you can use the controllers to replace the controllers in an existing system. This may involve
commissioning just one controller at a time, and/or hot commissioning. However, in addition the normal commissioning risks,
the existing system, and, in the case of hot commissioning, the live system, present challenges and risks that must be
anticipated and mitigated.
DANGER!
For retrofits, qualified and experienced personnel must carefully consider the effect of each commissioning
step. Mistakes may cause death, personal injury, and/or damage to equipment.
DANGER!
For hot commissioning and retrofits, good communication is essential. Respect all limitations from the
system owner or operator. Always check before touching or changing any existing wiring.
INFO
During a retrofit, you can use switchboard control and the switchboard GOV up, GOV down, AVR up and AVR down
controls to transfer the load to the first new controller as it is commissioned. Once two or more new controllers are
commissioned, you can use the load sharing parameters to transfer the load to the new controllers.
PPU 300 Commissioning guidelines 4189341106 UK
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