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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
Содержание PVED-CLS
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