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SYDFED-2X, SYDFED-3X, SYHDFED-1X
| Product description
Bosch Rexroth AG, Edition 11.2021, RE 30017-B
During brief regenerative operation the variable displacement pump changes over
to motor operation for a limited period of time, e.g. for pressure unloading or for
lowering a load. If the requirement profile remains within the limits according to
Fig. 9, the standard version of the pump with standard rotary group 0000 or 0479
can be used.
50
100
150
200
280
p[bar]
+10 +20 +30 +40 +50 +60 +70 +80 +90 +100
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0
Ist [%]
p[bar]
p[bar]
250
SYD_028
Motor
operation
Pump
operation
Oper
at
in
g pr
es
sur
e p
HP
(bar)
Standard rotary
group
Fig. 9: Operating limits for continuous regenerative operation for series SYDFED-2X and SYDFED-
3X for standard rotary groups
With series SYHDFED-1X we do not differentiate between brief and continuous
regenerative operation. The operating limits are shown in Fig. 10. Otherwise
observe the notes given on continuous regenerative operation and brief
regenerative operation on the previous pages.
280
350
p[bar]
+10 +20 +30 +40 +50 +60 +70 +80 +90 +100
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0
t %]
I [
s
p[bar]
p[bar]
SYD_028
Motor operation
Pump operation
SYHDFED
NG 71 - 355
Oper
at
in
g pr
es
sur
e p
HP
(bar)
Fig. 10: Operating limits for SYHDFED
Brief regenerative
operation
Regenerative operation
for SYHDFED-1X