Ep - Proportional Electric Control - Bosch Rexroth A6VM series 71 Manual

EP – Proportional electric control
The proportional electric control provides infinite setting of
the displacement. Control is proportional to the electric
control current applied to the solenoid.
EP1, EP2 positive control
▶ Beginning of control at V
mum permissible speed at minimum control current)
▶ End of control at V
g max
speed at maximum control current)
EP5, EP6 negative control
▶ Beginning of control at V
mum speed at minimum control current)
▶ End of control at V
g min
permissible speed at maximum control current)
▼ Characteristic curve
EP5, EP6 EP1, EP2
0 0.2 0.4 0.6 0.8 1.0
V V / V V
g min g max
g g max
Note
The control oil is internally taken out of the high pressure
side of the motor (A or B). For reliable control, an operating
pressure of at least 435 psi (30 bar) is necessary in A (B).
If a control operation is performed at an operating pressure
< 435 psi (30 bar), an auxiliary pressure of at least 435 psi
(30 bar) must be applied at port G using an external check
valve. For lower pressures, please contact us.
Please note that pressures up to 7250 psi (500 bar) can
occur at port G.
(minimum torque, maxi-
g min
(maximum torque, minimum
(maximum torque, mini-
g max
(minimum torque, maximum
1600 800
max max
1400 700
1200 600
1000 500
800 400
600 300
400 200
200 100
EP5 EP6
EP1 EP2
(12 V) (24 V)
Axial piston variable motor | A6VM series 71
EP – Proportional electric control
Response time damping
The response time damping is influencing the stroke char-
acteristics of the motor and thus the reaction speed of the
machine.
Standard with Size 60 to 215
EP without damping.
EP.D with throttle pin on both sides, symmetrical (as to table)
Option with Size 60 to 115
EP with throttle pin on both sides, symmetrical (as to table)
▼ Overview Throttle Pins
Size 60
[inch] 0.018
Groove
size
[mm] 0.45
Technical data, solenoid
Voltage
Control current
Beginning of control
End of control
Current limit
Nominal resistance (at 68 °F (20 °C)) 5.5 Ω
Dither frequency
Duty cycle
Type of protection: see connector version on page 62
Various BODAS controllers with application software and
amplifiers are available for controlling the proportional
solenoids.
Further information can also be found on the internet at
www.boschrexroth.com/mobile-electronics.
RE-A 91610/12.2015, Bosch Rexroth Corp.
85 115 150 170
0.018 0.022 0.022 0.022
0.45 0.55 0.55 0.55
EP1, EP5 EP2, EP6
12 V (±20 %) 24 V (±20 %)
400 mA 200 mA
1200 mA 600 mA
1.54 A 0.77 A
22.7 Ω
100 Hz 100 Hz
100 % 100 %
13
215
0.026
0.65