Bit
Code
Condition
Reason
Solution
13
8192
F3.19 ≥ F3.20
Speed adaptation minimum speed
is greater than or equal to speed
adaptation maximum speed
Set F3.20 and F3.19 so that F3.20
is bigger than F3.19
15
32768
F4.57 – F4.58 < F3.19
Masked speed window drops bel‐
low speed adaptation minimum
speed
Change the window so it does not
collide with minimum speed boun‐
dary
Tab. 14-2:
Warnings in D0.86
Bit
Code
Condition
Reason
Solution
0
1
F4.57 + F4.58 > F3.20 Masked speed window exceeds
speed adaptation maximum speed
Consider setting the window so it
does not collide with maximum
speed boundary
4
16
F4.53 = 0
No pump inertia is parameterized
Consider setting F4.35 to the pump
inertia. This value is only needed
for pump type manual
5
32
F4.55 > 100
Motor derating-continuous torque at
standstill exceeds motor nominal
torque
Continuous torque at standstill
must be set to values smaller then
100% of nominal torque. Set F4.55
to < 100
6
64
Oil level warning
Oil level is too low
Refill oil
7
128
Oil temperature warn‐
ing
Oil temperature reached
Reduce hydraulic losses or en‐
hance oil cooling
8
256
D0.84 < F4.61
The hydraulic pressure has fallen
below the given threshold F4.61 for
a set amount of time F4.62. Possi‐
bly a motor stall or a too high hy‐
draulic load condition has occurred
Check hydraulic pipelines for
breaks and leakages
Check if drive maximum torque/
power is exceeded
Default values may need to be
changed to be appropriate for the
application
9
512
Oil change warning
Operation time exceeds oil life time Change oil and reset operation tim‐
er (F4.54)
10
1024
F3.29 = 0
No start-up time parameterized.
Default value of 2,000 ms is active
Chose F3.29 to a value greater
than 0
11
2048
Pump type invalid
Chosen pump type is not available
or manual configuration of pump
data
is
invalid
(F4.30,
F4.50...F4.54)
Chose pump type to an available
pump
12
4096
Oil filter 1 pre-warning Oil filter almost clogged
Clean or replace filter
13
8192
Oil filter 1 warning
100%
Oil filter clogged 100%
Clean or replace filter
Bosch Rexroth AG
DOK-SYTROX-DRN5020****-IT05-EN-P
134/143
Frequency-Controlled Pump Drive System Sytronix DRn 5020
Troubleshooting