InteliLite 9 Global Guide
82
or
Note:
The AMF function works only in AUTO mode.
Mains failure detection
The mains are considered as faulty when one or more of the following conditions are valid:
The mains voltage is out of the limits given by the setpoints
and
for a time period longer than
Mains < > Voltage Delay (page 203)
The mains frequency is out of the limits given by the setpoints
Mains Underfrequency (page 204)
and
for a time period longer than
Mains < > Frequency Delay (page 204)
The MCB close command was not successful and the alarm
was not reset.
Phase rotation is incorrect.
Healthy mains detection
The mains are considered to be healthy when all of following conditions are valid:
The mains voltage is within the limits given by the setpoints
and
.
The mains frequency is within the limits given by the setpoints
Mains Underfrequency (page 204)
and
The alarm
is not active (if MCB feedback is active). This condition is not
required if MCB is open (MCB feedback is inactive).
Phase rotation is correct.
The AMF procedure
When the mains failure is detected, the following steps are performed:
If the setpoint
is set to Mains Fail, the MCB is opened
The timer for automatic start of the gen-set
Emergency Start Delay (page 200)
begins to count down.
After the timer has elapsed, the gen-set is started.
Note:
The automatic start of the gen-set due to AMF function can be disabled by the binary inputs
or
If the setpoint
is set to Gen Run, the MCB is opened once the generator voltage is
within limits (after
Minimal Stabilization Time (page 174)
elapses).
Note:
If the mains are restored to health and the gen-set is still not connected to the load, the controller
interrupts the startup process and closes back the MCB.
After
elapses, the GCB is closed and the gen-set begins to supply the load.
After the mains restored to normal, the timer
begins to count down.
Maximum time between closing of MCB and opening GCB is given by the setpoint
. After GCB is opened, the gen-set cools down and a stop.
IMPORTANT: Controller has this behavior only in AUTO mode!
5.4.9 Engine cool down and stop
The cool down phase follows after the stop command has been issued and the GCB has been opened.
Содержание InteliLite 9
Страница 17: ...InteliLite 9 Global Guide 17 Image 3 2 MRS application overview 6 back to Applications overview ...
Страница 41: ...InteliLite 9 Global Guide 41 4 4 12 Example of AMF Wiring ...
Страница 42: ...InteliLite 9 Global Guide 42 4 4 13 Example of MRS Wiring ...
Страница 80: ...InteliLite 9 Global Guide 80 Image 5 11 Flowchart of start of diesel engine ...
Страница 101: ...InteliLite 9 Global Guide 101 5 4 15 Flowchart Image 5 26 Basic flowchart of controller sequences ...
Страница 173: ...InteliLite 9 Global Guide 173 Image 8 7 Idle Time 1 Image 8 8 Idle Time 2 6 back to List of setpoints ...