Spool Calibration Overview - Danfoss PVED-CLS User Manual

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9.3.2

Spool calibration overview

(P3162)
Flow range
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
Max spool position, left P3162 S16
Max spool position,
P3164 S16
right
Closed loop dead-band
P3166 S16
edge, left
Closed loop dead-band
P3168 S16
edge, right
Open loop dead-band
P3170 S16
edge offset
© Danfoss | August 2018
Close Loop mode
(P3166)
Open Loop mode
P1
L Hydraulic deadband
P1: (P3166 + P3170)
P2: (P3168 - P3170)
Description of parameter
x10u Meter Spool left most position
x10u Meter Spool right most position
x10u Meter Spool closed loop dead-band edge, Left
x10u Meter Spool closed loop dead-band edge, Right
x10u Meter Spool open loop dead-band offset
Flow, Q
(L/min)
(P3088)
Maximum flow
(P3168)
P2
R
Figure 23
Table 28
(P3164)
Spool displacement
Flow range
Range
OEM, Dealer -1000 -300
OEM, Dealer 300 1000
OEM, Dealer -300 0
OEM, Dealer 0 300
OEM, Dealer 0 150
AQ00000211 | 63
-420
420
-105
105
25