11
PWM
F.E.T.
output
stage
I Max ( 20 Turn potentiometers )
‘Dither’
( PWM )
frequency
adjust.
I Min adjust
+Vin
0Vin
ECU 0V
ECU PWM
signal I/P
Internal
PSU
Ramp
Generator
Current
Feedback
PWM ‘ f ’
generator
Output to
valve coil
connector
700-00028-0, DFC-4 Fan Driver Unit.
PWM
To V
Mechanical Data:
Housing Type:-
2 part, inverted ( mount by lid ).
Housing Material:-
High strength, lightweight Aluminum alloy
Housing Colour:-
Eggshell Black.
Surface Finish:-
Powder coated
Unit size:-
See above size detail drawings.
Unit Weight:-
Approx.... 400 grams ( including Encapsulation material & Cable )
Wire entry:-
Sealed to PCB by encapsulant
Encapsulation:-
Flame Resistant, Black , Two Part Epoxy Resin.
Wire length – O/P:
Approx...... 0.5 Metres automotive grade cable
-
I/P
Approx….. 2 Metres automotive grade cable
Wire specification:-
16/02 with PVC outer protection
to Def Standard 16-12 Part 5 ( Screened )
2.5 Amps/core @ 90°C ( 200°F ) Max Operating Temp.
Mechanical detail: -
Block Diagram: -
