Bosch Rexroth A6VM series 71 User Manual

RE-A 91610/12.2015, Bosch Rexroth Corp.
13 Axial piston variable motor | A6VM series 71
EP – Proportional electric control
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
g min
(minimum torque, maxi-
mum permissible speed at minimum control current)
▶ End of control at V
g max
(maximum torque, minimum
speed at maximum control current)
EP5, EP6 negative control
▶ Beginning of control at V
g max
(maximum torque, mini-
mum speed at minimum control current)
▶ End of control at V
g min
(minimum torque, maximum
permissible speed at maximum control current)
▼ Characteristic curve
EP5, EP6 EP1, EP2
0 0.2 0.4 0.6 0.8 1.0
V
g min
V
g
/ V
g max
V
g max
1600
max
1400
1200
1000
800
600
400
200
800
max
700
600
500
400
300
200
100
EP5
EP1
(12 V)
EP6
EP2
(24 V)
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.
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 85 115 150 170 215
Groove
size
[inch] 0.018 0.018 0.022 0.022 0.022 0.026
[mm] 0.45 0.45 0.55 0.55 0.55 0.65
Technical data, solenoid EP1, EP5 EP2, EP6
Voltage 12V (±20%) 24V (±20%)
Control current
Beginning of control 400mA 200mA
End of control 1200mA 600mA
Current limit 1.54A 0.77A
Nominal resistance (at 68°F (20°C)) 5.5Ω 22.7Ω
Dither frequency 100Hz 100Hz
Duty cycle 100% 100%
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.

Bosch Rexroth A6VM series 71 Specifications

General

Brand	Bosch
Model	Rexroth A6VM series 71
Category	Engine
Language	English