Bosch Rexroth Sytronix FcP 5020 Quick Start Manual page 40

Bosch Rexroth AG
Block Diagram of Main Functions
Please refer to the figure below for pump switching logic (F4.28 = 0, F4.29 = 0).
This pump switching logic can also be inversed via F4.29 or different terminal
connecting from relay.
Fig. 7-14: Action logic of relay
Δp = p - p
cmd actual
When the pump logic has been switched to different logic (Vg
control parameter need also to be changed:
For logic Vg :
max
Vg = Vg1 (two points) or Vg = Vg1 + Vg2 (double pump)
●
p/Q controller parameter set [0], e.g. [F3.10]...[F3.19]
●
For logic Vg :
min
Vg = Vg2 (two points) or Vg = Vg1 (double pump)
●
p/Q controller parameter set [1], e.g. [F3.30]...[F3.39]
●
When the two points / double pump control is active, the p/Q pa-
rameter selection function via digital input (F2.16...F2.24) is deacti-
vated.
Application example:
24V power supply, normal open relay terminal Ta, Tb and Rexroth two points
pump controller is connected in series, [F4.28] is set to ''0: Two points pump''
and [F4.29] is set to ''0: Positive'', when Δp and N
action, pump switches to the minimum displacement.
36/75
or Vg
max
satisfy the condition of relay
th
DOK-RCON03-FCP5020****-QU02-EN-P
FcP 5020
), the
min