35
®
The procedure for entering or modifying a profile is as follows:
1.
Enter commission ratio mode (see page 34). P0 0 (close) is displayed.
2.
If the close setpoint has been entered before and no change is required, press
AUTO MAN
(NEXT)
. Otherwise, move each servo-motor to its lowest position and press
COM (ENTER)
.
P01 (purge) is displayed.
3.
Select the burner (energize PB7) and the required profile on. The servo-motors will automati-
cally move to their highest positions and stop. If the purge setpoint has been entered before and
no change is required, press
AUTO MAN (NEXT)
. Otherwise, press
COM (ENTER)
. P02
(ignition) is displayed.
4.
Wait for the pre-purge time to elapse. If the ignition setpoint has been entered before, the drives
will move to their ignition positions. If a change is required or the ignition setpoint has not been
entered before, move all the servo-motors being used to their required ignition positions and
press
COM (ENTER)
.
5.
To attempt ignition of the burner, hold down the AUTO MAN (NEXT) key for approxi-
mately three seconds.
If a change is required to the ignition position move all of the servo-
motors to their required positions and press
COM (ENTER)
, if no change is required press
AUTO MAN (NEXT)
.
6.
Wait for the display to show P03 (low fire) after the relevant safety times have elapsed. If igni-
tion is unsuccessful and a safety shutdown occurs, investigate the problem and repeat steps 2-5
to attempt ignition again.
7.
If the low fire setpoint has been entered before and no change is required, press
AUTO MAN
(NEXT).
Otherwise, move each servo-motor to the required low fire position and press
COM
(ENTER)
. P04 (next profile setpoint above low fire) is displayed.
8.
Repeat step 6 for each required profile setpoint, up to a minimum of P04 and a maximum of
P23.
9.
Leave commission ratio mode. The last profile setpoint entered will become the high fire set-
point.
If a controlled shutdown occurs, the unit will return to step 2. The setpoints entered in the current
commissioning session are not lost and the
AUTO MAN (NEXT)
key may be used to step through
the start-up sequence and fire the burner.
If a safety shutdown occurs, the setpoints are kept in the same way as for a controlled shutdown. It
will be necessary to remove all faults before moving further than step 2.
Leaving commission ratio mode:
To leave commission ratio mode and return to run mode, press the key labelled
DATA (RUN
) fol-
lowed by the
COM (ENTER)
key.
• If P03 (or higher) has been commissioned, the existing profile will be overwritten.
If you do
not wish the existing profile to be overwritten, disconnect the power to the unit without returning to
run mode.
• Only the setpoints used in the current commissioning session will be stored
. For example, if an
existing profile has setpoints up to P15 but only the setpoints up to P10 were viewed or altered, then
only the setpoints up to P10 will be stored. Therefore, it is vital that FAULT MUTE (NEXT) is
pressed to get to the last setpoint in the profile before leaving commission ratio mode. This does not
apply if only the close or purge setpoints (P00 or P01) are altered.
COMMISSION RATIO MODE
RUN MODE
DATA
COM
(RUN)
(ENTER)
