Danfoss 51 Series Service Manual page 10

Service
Manual
Series 51-1 Controls
81
,B.2,B7,El,EZ,El,FI,
F2, N1,
T1,T2,T7,TA,TH,p7,pg
T1
,T2,T7,T
A,
TH Pressure Compensator (PC)
controls
Schematic diagrams -
Tl
/72/f7
Schematic diagrams-TH
(R5 shown)
Adjustment
$
warning
T1t2t7
C2
Do
not
perform tlris prccedure
unless
the
machine
can be safely operaied wfiile
loading the motor shaft
as
described. lf
trecessary, remove the motor frorn the application and perform this procedure
in
an
a
ppropriate test
stand.
PC
start pressure
The pressure
compensator start pressure
setting
is
adjustable in
a
range from
1
10
to
370
bar [15g5
to
5366 psil. To measure
the start pressure
setting:
.
applythe
vehicle's
brakes
to
lock the motor
shaft
from turning
or
.
add
an elrtreme
load to
the workfunction
of
the
machine.
To
check
or
reset the pressure compensator
setting
on a vehicre:
t.
lnstall
a
600 bar [10,000 psi] gauge at port
M4
to monitor
pressure at the rod end (maximum
displacement)
of
the servo piston.
Due to the controf's configuration the
pressure at
M4
will
equal
the
system pressure.
2,
Install
a
600 bar [10,000 psi] gauge at port
M3
to monitor
pressure at
the piston end (minimum
displacement)of the
servo
piston.
| 1009443
.
Rev BA
. February
201 5