The "relays/controls" menu
122
function = "ratio"
In this case, the switch on and switch off points are numbers between 0 and 1. The switch on point
must be smaller than the switch off point.
The rake control relay is energized if the ratio L2/L1 falls below the switch on point. It is de-
energized if the ratio rises above the switch off point.
L00-FMU90xxx-19-00-00-yy-060
A: switch on point; B: switch off point;
C: relay energized (i.e. rake cleaning on); D: relay de-energized (i.e. rake cleaning off)
5.4.5 "rake control"
(Part 3: Switching parameters)
"switch delay"
Specifies the switch delay for the rake control.
The relay does not switch immediately after the switch on point has been exceeded but only after
the specified switch delay. This is to prevent that random fluctuations of L1 or L2 activate the rake
cleaning unnecessarily.
"error handling"
Specifies the behavior of the rake control relay in case of an error.
t
t
L2/L1
L1
L2
A
B
C
D
⇒
rake control R1202
switch delay:
error handling:
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