5
Adjustment Guide:
INVERSE
INVERSE
valve control
valve control
operation
operation
( Recommended ).
( Recommended ).
700-00028-0, DFC-4 Fan Driver Unit.
Typical characteristic of an inverted pressure control valve This option
WILL
allow ‘Default-
to-full-fan-speed’ safety operation if the power supply to the controller is removed.
Recommended Parker valve is the ERA121C30 ( 3000psi operation – other values are
available, please consult the IHD catalogue ).
Adjustment Guide:
NON
NON
-
-
INVERSE
INVERSE
valve control
valve control
operation.
operation.
Typical characteristic of a normal pressure or flow control valve or variable piston pump
Electro-hydraulic stroker. This option
WILL NOT
allow ‘Default-to-full-fan-speed’ operation
if the power supply to the controller is removed.
