Block Diagram - Parker 700-00027-0 Manual

Rubber gasket seal in lid recess.
If required, Apply 'lithium
grease' under lid ( fill void )
and between driver plug
base, gasket and valve coil
connector.
• Use care when re-assembling unit after adjustment and ensure that lid gasket is in place.
• DO NOT over tighten the central M3 x 40mm mounting screw.
• Ensure that flat rubber gasket ( supplied ) is fitted between valve coil and driver plug.
• For 'high moisture' applications apply 'lithium grease' between valve coil and driver plug base
before final assembly and mounting screw tightening process.
• For total immersion applications, follow above step and additionally fill driver plug lid with 'lithium
grease' after adjustment and before final assembly to form liquid proof seal around all potentiometers
and units plug base / valve coil joint.
+Vin
Internal
0Vin
ECU PWM
signal I/P
ECU 0V
700-00027-0, DFC-3 Plug Top Driver Unit.
Application Notes for Harsh Environments.

Block Diagram.

PSU
PWM
To V
M3 x 40mm mounting screw
I Min adjust
PWM
Ramp
F.E.T.
Generator
output
stage
Current
Feedback
Liquid tight cable outlet
Driver plug base to valve coil rubber
gasket supplied ( loose )
I Max ( 20 Turn potentiometer )
PWM ' f '
generator
Output to
valve coil
interface
'Dither'
( PWM )
frequency
adjust.
11