Electrical Displacement Control (Edc) Options A2 (12 V)/A3 (24 V) - Sauer Danfoss H1 Technical Information

Electrical Displacement
Control (EDC)
Options
A2 (12 V)/A3 (24 V)
Pump displacement vs. control current
-b
12
H1 Axial Piston Pump, Size 045/053, Single
Technical Information
General Technical Specifications
EDC Principle
The Electrical Displacement Control
(EDC) consists of a pair of proportional
solenoids on each side of a three-
position, four-way porting spool. The
proportional solenoid applies a force
input to the spool, which ports hydraulic
pressure to either side of a double acting
servo piston. Differential pressure across
the servo piston rotates the swashplate,
changing the pump's displacement from
full displacement in one direction to full
displacement in the opposite direction.
Under some circumstances, such as
contamination, the control spool could
stick and cause the pump to stay at some
displacement.
A serviceable 125 μm screen is located in
the supply line immediately before the
control porting spool.
100 %
-a
Current mA
"0"
a
100 %
Description
Mating connector
Wedge lock
Socket contact (16 and 18 AWG)
Sauer-Danfoss mating connector kit
11063344 • Rev EA • Dec 2012
EDC-Schematic diagram
C1
F00B
Control signal requirements
Control current
Voltage
12 V
24 V
b
* Factory test current, for vehicle movement or
application actuation expect higher or lower value.
Connector
P003 479E
Quantity Ordering number
1 Deutsch® DT06-2S
1 Deutsch® W2S
2 Deutsch® 0462-201-16141
1 K29657
P003 191
M14
C2
F00A T
Feedback from
Swash plate
P003 478E
a* b Pin
mA mA connections
640 1640
any order
330 820
T000133E
1 2
P003 480
T000 134E
P