Fireye PPC6000 Series Manual page 185

Stage Stage name
no.
3. & 4. N/A
5. Prove closed
positions
(EK80-89)
6. N/A
7. Moving to Purge
8. Pre-purge
9. Move to ignition
positions
Description
Not Applicable to PPC6000
Note: Statuses 3 and 4 are reserved for a gas valve proving system
and are not implemented on this control. This control will advance
directly to status 5 once the conditions above have been met.
The fuel and air motors are moved down until they are stopped by the
'closed position' micro-switches in the servos. The final positions are
compared with the closed positions stored in memory, and must be
within 5º of the stored values otherwise the control will lockout.
Variable speed drives must read zero. (4 mA)
When all drives have stopped moving, the control will advance to
status 7. The 'HIGH' input (PA9 to PA11)still must be made during
this time.
If the fuel/profile select input is removed (PE9, 10, 11 or 12), the
control will immediately move to status 1.
Not Applicable to PPC6000
Note: Status 6 is reserved for air pressure detection, and is not
implemented in this control. This function must be provided by the
burner controller.
The selected motors are moved up towards the purge position. When
the drives have all stopped, the control moves to status 8.
If the fuel/profile select input is removed (PE9, 10, 11 or 12), the
control will immediately move to status 1.
The controller confirms all required drives are at their purge positions,
and gives a 'purge proved' signal by providing (line voltage) to
terminal PE8 (high-fire-switch).
The control will remain in this status until the burner controller signals
the end of pre-purge by breaking PA11 – PA9 ('HIGH' input).
If the fuel/profile select input is removed (PE9, 10, 11 or 12), the
control will immediately move to status 1.
The selected motors are moved to their ignition positions. The 'purge
proved' signal is switched off. When the drives have all stopped
moving, the control advances to status 10.
If the fuel/profile select input is removed (PE9, 10, 11 or 12), the
control will immediately move to status 1.
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