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Building Technologies Division
Basic Documentation LME7...
CC1P7105en
Infrastructure & Cities Sector
27 PWM settings
29.11.2011
By
pressing
ESC
(press
and
simultaneously) you leave the entry level
and return to the selection level for the parameters
Display
changes
from
PArA
to
400: SEt
Press to select the next parameter group (P500...P600). Display:
500: PArA
Press
/reset
to go to the respective group
Press or
to select parameter
503.00
(
503
blinking)
Press
/reset
for >1 second. Subindex
00
blinks
Press or
to select subindex
01
Press
/reset
for >1 second. Display shows the prepurge speed. Also see chapter
Setting parameters with index, with or without direct display
By
pressing or
the speed can be changed in step sizes of 10 rpm. Set the
required minimum prepurge speed
Press
/reset
to transfer the setting value to the onboard memory
By
pressing
ESC
3 times (press
and
simultaneously) you leave the
entry level and return to the selection levels for the subindex. Parameter for
returning to the parameter group (display shows
500: PArA
)
Press to select the next parameter group (P600...P700). Display shows
600:
PArA
Press
/reset
to go to the respective group
Press or
to select parameter
675.00
(
675
blinking)
Press
/reset
for >1 second. Subindex
00
blinks
Press
/reset
Press or
to set the value to 40%
Press
/reset
to transfer the setting value to the onboard memory
By
pressing
ESC
3 times (press
and
simultaneously) you leave the
parameter level and return to the subindex
Press or
to select subindex
01
Press
/reset
Press or
to set the value to 55%
Press
/reset
to transfer the setting value to the onboard memory
By
pressing
ESC
twice (press
and
simultaneously) you leave the
parameter setting level and return to the initial mode
Warning!
In the case of
burner components (PWM fan) with voltage-related behavior, it is
recommended to read out the value (current PWM signal, parameter 920) for the
prepurge phase (P30) with the minimum permissible prepurge speed close to the
undervoltage limit
, and for the ignition phases (P38, 40 and 44) with the maximum