Fireye PPC6000 Series Manual page 59

Stage Stage name
no.
18. Post-purge
4.3 Non-volatile lockout
Non Volatile lockouts cannot be cleared without operator intervention and are remembered in the event of
power being removed from the control.
A non-volatile lockout will occur under the following conditions:
 In any stage the interface signals are incorrect.
 In stages 5, 7 and 8, stages 10-16 (inclusive) and stage 18 if a motor is not in the correct position
 In any stage, if an internal or external fault not previously mentioned occurs which may affect the
safe operation of the burner (see section 0)
4.4 Modulation
During stage 16 (modulation), the control will position the fuel and air motors within the programmed profile
appropriate to the requirement for heat. The control has 2 modes of operation using the standard Fireye PID
modulation function, Remote and Local. The mode of operation is set via the keypad by pushing the "Burner
ON/OFF" key and selecting the mode. Using the programmable block function (option) within the control it is
possible for the modulation control to be generated with alternate options, these are not covered in the
standard manual as they may be generated by the user. For an overview of Function Block Programming, see
Section 10.
4.4.1 Normal/Remote mode.
In Remote mode, the modulation rate is determined by the internal PID control settings, Manual modulation
from the keypad, or by one of the following remote influences:

Auxiliary modulation input,

Serial communications.
4.4.2 Local mode. (LOC 1, LOC 2)
In Local mode, the modulation rate is determined by either the internal PID settings or Manual modulation via
the UP/DOWN keys. External modulation inputs and setpoint selection inputs are ignored.
When "Local1" is displayed the burner is running using the Setpoint 1 PID settings.
When "Local2" is displayed the burner is running using the Setpoint 2 PID settings.
Description
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 PA9 – PA11 ('HIGH' input), or the
fuel/profile select input is removed (PE9, 10, 11 or 12). In either case,
the control will immediately move to status 1.
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