Bosch REXROTH A4 Series, Instruction Manual, Page: 67 / 104

Commissioning 67/104
RE 92076-01-B/10.2017, A4... with HS5E pilot control valve/Series 3x, Bosch Rexroth AG
Fig. 21: Actual pressure value acquisition
8.1.5.3 Setting of torque limitation
For torque limitation to be able to operate, it needs a valid actual pressure value
from a pressure sensor.
100% corresponds to the torque of the pump at the actually set maximum
displacement and to the value of pressure standardization.
or
To protect the drive motor from overloading, it is possible to limit the maximum
torque of the pump. Parameter “P-0-2952, Torque limitation of pump, relative” is
a relative variable in percent and is relative to the maximum torque of the pump
at normal pressure (P-0-2957.0.1).
Determining the characteristics
Flow q
v
=
V
g
× n × η
v
[l/min]
1000
Torque T =
V
g
× Δp
[Nm]
20 × π × η
mh
Power P =
2 π × T × n
=
q
v
× Δp
[kW]
60000 600 × η
t