Image 7.90: “Pump settings” screen
ID
Index Name
Value
Unit
Description
2851
HYD_Pump
Pump parameters
2851
0
displ
5.4
ccm/rev Offset
2851
1
cTorque
0.0859437 Nm/bar Torque constant
2851
2
pNom
250
bar
Nominal pressure
2851
3
nNom
1500
rpm
Rated speed
2851
4
etaVol
80
%
Volumetric efficiency at nominal pressure,
rated speed
2851
5
nMin
0
rpm
Minimum speed
2851
6
nMax
2000
rpm
Maximum speed
2851
7
nCritical
200
rpm
Critical speed (@ nominal pressure)
Table 7.99: Pump data settings
MOOG
ID No.: CB40859-001 Date: 11/2020
MSD Servo Drive - Device Help
215
7 Control
ID
Index Name
Value
Unit
Description
2851
8
TCritical
10
s
Max. permissible time at low speed and
nominal pressure
2851
9
iGearPump
-1
Gear ratio between pump and motor
2851
10
p0
20
bar
Max. permissible stationary pressure at a
standstill
Table 7.99: Pump data settings (continue)
The position and speed actual values are evaluated via the encoder inputs for
position and speed. In this example, an SSI linear encoder is used which must be
set to CH1(1) = X7 (e.g. Sin/Cos, channel 1) via the function selector in the encoder
screen.
NOTE
l
The encoder for commutation and torque control as well as speed
control are used for the motor.
l
The encoder for position control is used for cylinder-position and
cylinder-speed control.