Danfoss PVED-CLS, User Manual

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© Danfoss | August 2018 AQ00000211 |
63
ENGINEERING TOMORROW
9.3.2 Spool calibration overview
Flow range Hydraulic deadband Flow range
Open Loop mode
Close Loop mode
L R
(P3162) (P3164)
(P3088)
(P3166) (P3168)
P1
P2
P1: (P3166 + P3170)
P2: (P3168 - P3170)
Spool displacement
Maximum flow
Flow, Q
(L/min)
Figure 23
P3162 and P3164 define the maximum spool stroke and are set to the stroke length where the spool is mechanically
stopped by the valve. P3162 and P3164 is usually not calibrated.
P3166 and P3168 define the closed-loop dead-band spool positions known to the software.
Parameter P3170 is a spool position offset which is added/subtracted (P1 and P2) to the spool position set-points in
open-loop only. P3170 is usually not calibrated per machine, but designed as a fixed value, for each application or
potentially for each application models.
Name
A
ddr
es
s
D
at
a t
yp
e
U
ni
t
Description of parameter
U
se
r
Range
D
a
nf
o
ss
de
fa
ul
t
val
u
e
S
a
fet
y
cri
ti
ca
l
p
a
ra
m
et
ers
‘
S
’
Mi
n
.
M
ax.
Max spool position, left P3162 S16 x10u Meter Spool left most position OEM, Dealer -1000 -300 -420
Max spool position,
right
P3164 S16 x10u Meter Spool right most position OEM, Dealer 300 1000 420
Closed loop dead-band
edge, left
P3166 S16 x10u Meter Spool closed loop dead-band edge, Left OEM, Dealer -300 0 -105
Closed loop dead-band
edge, right
P3168 S16 x10u Meter Spool closed loop dead-band edge, Right OEM, Dealer 0 300 105
Open loop dead-band
edge offset
P3170 S16 x10u Meter Spool open loop dead-band offset OEM, Dealer 0 150 25
Table 28