18
POSITION
All selected drives (motors and inverters) are driven to their
ignition (P2) positions.
The unit will proceed to status 10 if:
— The drives have stopped moving.
— If selected, a ‘release to ignite’ signal is received via serial
comms or an auxiliary input (see option parameters 15.1 and
15.2)
If the burner select input (PC12) is turned off, the profile
selection (PC13, 14 and/or 17) is changed or the high/low
initiate input (PC11) is on, the unit returns to status 3
(or status 13 if a post purge has been selected using option
parameter 09.1).
10
IGNITION
The safety shutdown output (PC1-2), the controlled shutdown
output (PC3-4) and the ignition prove output (PC5-6) are
all closed.
All selected drives (motors and inverters) are driven to their
ignition (P2) positions.
The unit will proceed to status 11 when the ignition time has
expired (see option parameter 08.1)
If the burner select input (PC12) is turned off, the profile
selection (PC13, 14 and/or 17) is changed or the high/low
initiate input (PC11) is on, the unit returns to status 3
(or status 13 if a post purge has been selected using option
parameter 09.1).
If the measured drive positions do not match P2, the unit will
change to status 2 with a drive positioning fault.
11
MOVING TO THE
The safety shutdown output (PC1-2) and the controlled
LOW FIRE
shutdown output (PC3-4) are both closed.
POSITION
All selected drives (motors and inverters) are driven to their
low fire (P3) positions.
The unit will proceed to status 12 if:
— The drives have stopped moving.
— The low fire hold time has expired (see option parameter
8.2)
— If selected, a ‘release to modulate’ signal is received via
serial comms or an auxiliary input (see option parameters
15.1 and 15.2)
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).
The high/low initiate input (PC11) is ignored.
If the drive positions are outside the ignition and low fire
positions, the unit will change to status 2 with a drive
positioning fault.
12
MODULATION
The unit modulates all selected drives in ratio to the required
modulation rate. Trim will be applied after the transport
delay has expired (if selected). The modulation may be
limited by the oxygen trim function (see EK77 & EK78).
If the burner select input (PC12) is turned off, the profile
selection (PC13, 14 and/or 17) is changed or the measured
