Danfoss PVED-CLS, User Manual, Page: 176 / 182

176 | © Danfoss | August 2018 AQ00000211
ENGINEERING TOMORROW
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Calculate the sector CRC as CRC-16-CCITT (P3771…P3778) and store (word) at the CRC/Checksum address
(P3789). For example of how to calculate sector CRC, please see paragraph 17.5.2.
Write parameters to PVED-CLS’ EEPROM
•
Put PVED-CLS into “bootloader mode”
•
For MAIN-controller:
o
Write data sector “Analogue Sensor Calibration data”
o
Read back data (verification)
o
Acknowledge data correctness
o
To sign acknowledge, calculate signature CRC and write it at the CRC/signature address (P48)
o
Write data sector “Production/Calibration Flag”
•
For SAFETY-controller:
o
Write data sector “Analogue Sensor Calibration data”
o
Read back data (verification)
o Acknowledge data correctness
o
To sign acknowledge, calculate signature CRC and write it at the CRC/signature address (P48)
Calculate the sector CRC as CRC-16-CCITT (P3771…P3778) and store (word) at the CRC/Checksum address (P3789).
For example of how to calculate sector CRC, please see paragraph 17.5.2.
17.6.5 Manual spool calibration
17.6.5.1 Spool calibration overview
Flow range Hydraulic deadband Flow range
Open-loop mode
Closed-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 68
P3162 and P3164 define the maximum spool stroke and are set to the stroke length where the spool is mechanically
stopped by the valve.
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.