Danfoss 51 Series Service Kit Instructions page 2

© Danfoss, 2013
A stop pin is installed in the adjusting screw to
prevent "over travel" of the PCOR valve spool. The
stop pin must protrude from the "bottom" of the
adjusting screw 24 mm (0.94 inch) for settings of 110
to 260 bar (1600 to 3750 psi) or 19 mm (0.75 inch) for
settings of 270 to 370 bar (3900 to 5350 psi). Refer to
the appropriate Service Parts Manual.
In order for the PCOR to function properly on motor controls
equipped with a Break Pressure Defeat spool, the defeat
spool must be positioned correctly. The signal pressure for
the defeat spool should be applied to the appropriate port
(XA or XB) as shown in the following table to shift the defeat
spool and permit PCOR operation.
H g i h s s y
R o a t o i t n
p e r s s u e r
C W A
C C W B
Note: Some motor controls may be configured for the
PCOR to function on only one side of the closed
loop. Refer to the nomenclature on the motor
nameplate.
BLN-10118 • Rev AA • September 2013
CAUTION
e t m C o n r t l o p e r s s u
p o t r o n p o t r
B X
A X
e r
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