MoTeC Installation 9
braking the motor when the high speed winding is turned on. The
linked high speed wiper output can be configured in the Output 9
settings.
- Output 9 performs motor braking by momentarily shorting the output
to ground when the output turns off.
The PDM must be configured with the appropriate logic to perform on/off,
speed selection, intermittent operation and wiper parking based on the state
of the control switches and park switch input.
The diagram below shows an example sequence of wiper operations. The
wiper slow condition is setup to operate the slow winding when the wiper
switch is on, or when the wiper is not parked. When the linked fast winding
output is on, Output 9 is held off even though the condition driving output 9 is
still true.
Wiper slow
input
Out 9 held off while
linked output is on
Parking
Wiper fast
input
Wiper park
switch input
Wiper slow
condition
Out x (High
Winding)
Out 9 (slow
winding)
Consider when implementing wiper control logic:
- The condition for the slow winding output (Output 9) can remain true
even when the fast winding output is on.
- The wiper should always be parked from the slow winding output
(Output 9) so that motor braking can be used.
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