Speed Windshield Wiper Control - Maretron M-Power CLMD16 Configuration Manual

CLMD16 Configuration Guide___________________________________

2 Speed Windshield Wiper Control

In the following example there is a windshield wiper motor that accepts a DC (+) output for
each speed. One for "Fast" and one for "Slow". The windshield wiper system will need a "Park"
signal (DC +) that will need to be applied when the wiper is not in "Slow" or "Fast" operation.
The circuit will take a total of 3 outputs from CLMD16. The "Fast" operation will have to disable
the "Slow" operation and vise-versa as the wiper motor cannot accept both signals at once.
The "Park" signal must be On by default, turn Off when the "High" or "Low" operations are On
and restore to the On state when "Fast" and "Slow" are Off. The control for this circuit will be
"Discrete I/O 5" for "Fast" and "Discrete I/O 6" for "Slow" See the following example steps to
setup a circuit of this type.
Step 1:
Because this circuit is mostly done within the "Logic Element" Switching Logic, It is best to start
with the "Logic Elements". In this example, "Logic Elements 5-7" will correspond with ECBs 5-7
respectively. Where "0" is Off and "1" is On, configure the "Logic Output" in a manner where
each "Discrete I/O" used for control will cancel the other, yet the opposing Discrete I/O will not
allow for the Output to do so unless the ECB is On. Do this by using the "Breaker On" signal.
Notice the arrangement for the "Logic Output 7" where the output will not turn On unless both
ECBs 5 and 6 are Off.
46 CLMD16 Configuration Guide Rev.1.1