17
®
If any of the measured drive positions do not match P0,
the unit will change to status 2 with a drive positioning fault.
6
PROVE PURGE
The safety shutdown output (PC1-2) and the controlled
(P1) POSITIONS
shutdown output (PC3-4) are both closed.
All selected motors are driven fully up, and 20mA is
output to the inverters.
The unit will proceed to status 7 if:
— All drives have stopped moving and match their purge
(P1) positions to within ±5° (or ±55 for inverters).
— Burner select input (PC12) is on (EK5 = 1)
— High/low initiate input (PC11) is on (EK4 = 1)
If the burner select (PC12) or high/low initiate (PC11) inputs
are turned off or the profile selection (PC13, 14 and/or 17) is
changed, the unit returns to status 3 (or status 13 if a post
purge has been selected using option parameter 09.1).
If any of the measured drive positions do not match P1, the
unit will change to status 2 with a drive positioning fault.
7
PRE-PURGE
The safety shutdown output (PC1-2), the controlled
(CLOSING FUEL
shutdown output (PC3-4) and the purge prove output (PC5-7)
DRIVES)
are all closed.
All selected air and option drives are driven to their purge
(P1) positions.
All selected fuel drives are driven to their close (P0)
positions.
The unit will proceed to status 8 when all fuel drives have
stopped moving.
The high/low initiate input (PC11) is ignored.
If the burner select input (PC12) is turned off or the profile
selection (PC13, 14 and/or 17) is changed, the unit returns to
status 3 (or status 13 if a post purge has been selected using
option parameter 09.1).
If the measured air or option drive positions do not match P1,
the unit will change to status 2 with a drive positioning fault.
8
PRE-PURGE
The safety shutdown output (PC1-2), the controlled
shutdown output (PC3-4) and the purge prove output (PC5-7)
are all closed.
All selected air and option drives are driven to their purge
(P1) positions.
All selected fuel drives are driven to their close (P0)
positions.
The unit will proceed to status 9 when the high/low initiate
input (PC11) is turned off.
If the burner select input (PC12) is turned off or the profile
selection (PC13, 14 and/or 17) is changed, the unit returns to
status 3 (or status 13 if a post purge has been selected using
option parameter 09.1).
If the measured air or option drive positions do not match P1,
the unit will change to status 2 with a drive positioning fault.
9
MOVING TO THE
The safety shutdown output (PC1-2) and the controlled
IGNITION
shutdown output (PC3-4) are both closed.
