Bosch Rexroth A6VM 71 User Manual

RE-A 91610/12.2015, Bosch Rexroth Corp.

Features

▶ Variable motor with axial tapered piston rotary group of

bent-axis design, for hydrostatic drives in open and

closed circuit
▶ For use in mobile and stationary applications
▶ The wide control range enables the variable motor to

satisfy the requirement for high speed and high torque.
▶ The displacement can be infinitely varied from V

gmax

to

V

gmin

=0.

▶ The output speed is dependent on the flow of the pump

and the displacement of the motor.
▶ The output torque increases with the pressure differen-

tial between the high and low-pressure side and with

increasing displacement.
▶ Wide control range with hydrostatic transmissions
▶ Wide selection of control devices
▶ Cost savings through elimination of gear shifts and

possibility of using smaller pumps
▶ Compact, robust motor with long service life
▶ High power density
▶ Good starting efficiency
▶ Version with 9-piston rotary group
▶ Good low speed characteristics
▶ High uniformity

▶ Sizes 60 to 215
▶ Nominal pressure 6500psi (450bar)
▶ Maximum pressure 7250psi (500bar)
▶ Open and closed circuits

Axial piston variable motor

A6VM series 71

RE-A 91610

Edition: 12.2015
Replaces: 04.2013

Contents

Type code 2
Hydraulic fluids 5
Flow direction 6
Shaft seal 6
Operating pressure range 7
Technical data 8
HP – Proportional hydraulic control 10
EP – Proportional electric control 13
HZ – Two-point hydraulic control 15
EZ – Two-point electric control 16
HA – Automatic high-pressure related control 17
DA – Automatic speed-related control 22
Electric travel direction valve (for DA, HA.R) 24
Dimensions size 60 25
Dimensions size 85 31
Dimensions size 85 32
Dimensions size 115 38
Dimensions size 150 44
Dimensions size 170 50
Dimensions size 215 56
Connector for solenoids 62
Flushing and boost pressure valve 63
Counterbalance valve BVD and BVE 65
Speed sensor 69
Setting range for displacement 70
Installation instructions 72
Project planning notes 74
Safety instructions 75

Americas

Bosch Rexroth Corp., RE-A 91610/12.2015

2 A6VM series 71 | Axial piston variable motor

Type code

Type code

01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21

A6V M 0 0 / 71 A W V 0 –

Axial piston unit

01 Bent-axis design, variable, nominal pressure 6500psi (450bar), maximum pressure 7250psi (500bar)

A6V

Operating mode

02 Motor M

Size (NG)

03 Geometric displacement, see technical data on page 8 in cm

3

/rev

060 085 115 150 170 215

in in

3

/rev

3.66 5.19 7.02 9.15 10.37 13.12

Control device 060 085 115 150 170 215

04 Proportional control

hydraulic

positive control

Δp

St

=145psi (10bar)

● ● ● ● ● ● HP1

Δp

St

=365psi (25bar)

● ● ● ● ● ● HP2

negative control

Δp

St

=145psi (10bar)

● ● ● ● ● ● HP5

Δp

St

=365psi (25bar)

● ● ● ● ● ● HP6

Proportional control

electrical

positive control

U = 12 V DC

● ● ● ● ● ● EP1

U = 24 V DC

● ● ● ● ● ● EP2

negative control

U = 12 V DC

● ● ● ● ● ● EP5

U = 24 V DC

● ● ● ● ● ● EP6

Two-point control

hydraulic

negative control

‒ ‒ ‒ ● ● ● HZ5

● ● ● ‒ ‒ ‒ HZ7

Two-point control

electrical

negative control

U = 12 V DC

‒ ‒ ‒ ● ● ● EZ5

U = 24 V DC

‒ ‒ ‒ ● ● ● EZ6

U = 12 V DC

● ● ● ‒ ‒ ‒ EZ7

U = 24 V DC

● ● ● ‒ ‒ ‒ EZ8

Automatic control

high-pressure related,

Positive control

with minimum pressure
increase

Δp≤approx.145psi (10bar)

● ● ● ● ● ● HA1

with pressure increase

Δp=1450psi (100bar)

● ● ● ● ● ● HA2

Automatic control

speed related, negative

control p

St

/ pHD=5/100

hydr. travel direction valve ● ● ● ● ● ● DA0

electric travel direction
valve + electric V

gmax

circuit

U = 12 V DC

● ● ● ● ● ● DA1

U = 24 V DC

● ● ● ● ● ● DA2

Pressure control/override 060 085 115 150 170 215

05 Without pressure control/override

● ● ● ● ● ● 00

Pressure control fixed setting, only for HP5, HP6, EP5 and EP6

● ● ● ● ● ● D1

Override

of controls

HA1 and HA2

hydraulic remote control, proportional

● ● ● ● ● ● T3

electric, two-point

U = 12 V DC

● ● ● ● ● ● U1

U = 24 V DC

● ● ● ● ● ● U2

electric and travel
direction valve, electric

U = 12 V DC

● ● ● ● ● ● R1

U = 24 V DC

● ● ● ● ● ● R2

Connector for solenoids

1)

(see page 62)

06 Without connector (without solenoid, only for hydraulic control)

0

DEUTSCH - molded connector, 2-pin, without suppressor diode

P

●

= Available

○

= On request

‒

= Not available

1) Connectors for other electric components can deviate.

RE-A 91610/12.2015, Bosch Rexroth Corp.

Axial piston variable motor | A6VM series 71
Type code

3

01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21

A6V M 0 0 / 71 A W V 0 –

2) The settings for the setting screws can be found in the table

(seepages 70 and 71).

Additional function 1

07 Without additional function

0

Additional function 2

08 Without additional function

0

Response time damping (for selection, see control)

09 Without damping (standard with HP and EP)

0

Damping HP, EP, HP5,6D. and EP5,6D., HZ, EZ, HA with counterbalance valve BVD/BVE

1

One-sided in inlet to large stroking chamber (HA)

4

One-sided in outlet from large stroking chamber (DA)

7

Setting range for displacement

2)

10

V

g max

-setting screw

V

g min

-setting screw 060 085 115 150 170 215

Without setting screw

short (0-adjustable)

● ● ● ● ● ● A

medium

● ● ● ● ● ● B

long

● ● ● ● ● ● C

extra long

‒ ● ● ● ● ● D

Short

short (0-adjustable)

● ● ● ● ● ● E

medium

● ● ● ● ● ● F

long

● ● ● ● ● ● G

extra long

‒ ● ● ● ● ● H

Medium

short (0-adjustable)

● ● ● ● ● ● J

medium

● ● ● ● ● ● K

long

● ● ● ● ● ● L

extra long

‒ ● ● ● ● ● M

Series

11 Series 7, index 1

71

Configuration of ports and fastening threads

12 ANSI, port threads with O-ring sealing according to ISO 11926

A

Direction of rotation

13 Viewed on drive shaft, bidirectional

W

Sealing material

14 FKM (fluoroelastomer)

V

Drive shaft bearing

15 Standard bearing

0

Mounting flange 060 085 115 150 170 215

16 SAE J744 127-4

● ● ‒ ‒ ‒ ‒ C4

127-2

‒ ● ‒ ‒ ‒ ‒ C2

152-4

‒ ‒ ● ● ● ‒ D4

165-4

‒ ‒ ‒ ‒ ‒ ● E4

●

= Available

○

= On request

‒

= Not available

Bosch Rexroth Corp., RE-A 91610/12.2015

4 A6VM series 71 | Axial piston variable motor

Type code

3)

Only possible in conjunction with HP, EP and HA control. Note the
restrictions described on page 65.

4) State ordering code for counterbalance valve separately in accor-

dance with data sheet 95522forBVD or 95525for BVE. Note the
restrictions described on page 65.

5) Not for EZ7, EZ8 and HZ7.

6) State ordering code for sensor separately in accordance with data

sheet 95132forDSM or 95133forDSA and note the requirements
relating to the electronics.

01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21

A6V M 0 0 / 71 A W V 0 –

Drive shaft 060 085 115 150 170 215

17

Splined shaft

ANSI B92.1a

1 1/4 in 14T 12/24 DP

● ‒ ‒ ‒ ‒ ‒ S7

1 1/2 in 17T 12/24 DP

‒ ● ‒ ‒ ‒ S9

1 3/4 in 13T 8/16 DP

‒ ‒ ● ● ‒ ‒ T1

2 in 15T 8/16 DP

‒ ‒ ‒ ○ ● ● T2

Port plate for working ports 060 085 115 150 170 215

18

SAE working ports A and B at rear

● ● ● ● ● ● 1

SAE working ports A and B at side, opposite

● ● ● ● ● ● 2

Port plate with 1-stage pressure limitation

valves for mounting a counterbalance valve

3)

BVD20

● ● ● ‒ ‒ ‒ 7

BVD25, BVE25

‒ ‒ ● ● ● ● 8

Valve (see pages 63 to 68) 060 085 115 150 170 215

19 Without valve

● ● ● ● ● ● 0

With counterbalance valve BVD/BVE mounted

4)

● ● ● ● ● ● W

With flushing and boost pressure valve, mounted

Flushing on both sides

Flushing flow at:

Δp=p

ND

‒pG=365psi (25bar) and

ν=60SUS (10 mm

2

/s)

(p

ND

=low pressure, p

G 

=case pressure)

Only possible with port plates 1 and 2

Flushing flow q

v

[gpm (l/min)]

0.9 (3.5)

● ● ● ‒ ‒ ‒ A

1.3 (5)

● ● ● ‒ ‒ ‒ B

2.1 (8)

● ● ● ● ● ● C

2.6 (10)

● ● ● ● ● ● D

3.7 (14)

● ● ● ‒ ‒ ‒ F

4.0 (15)

‒ ‒ ●

5)

● ● ● G

4.8 (18)

‒ ‒ ●

5)

● ● ● I

5.5 (21)

‒ ‒ ●

5)

● ● ● J

7.1 (27)

‒ ‒ ●

5)

● ● ● K

8.2 (31)

‒ ‒ ●

5)

● ● ● L

9.7 (37)

‒ ‒ ‒ ● ● ● M

Speed sensor (see page 69)

060 085 115 150 170 215

20 Without speed sensor

● ● ● ● ● ● 0

Prepared for speed sensor DSM/DSA

● ● ● ● ● ● U

With speed sensor DSM/DSA mounted

6)

● ● ● ● ● ● V

Standard / special version

21

Standard version

0

Standard version with installation variants, e. g. T ports against standard open and closed

Y

Special version

S

●

= Available

○

= On request

‒

= Not available

Notes

▶ Note the project planning notes on page 74.
▶ When ordering, please provide the relevant technical

data additionally to the type code

RE-A 91610/12.2015, Bosch Rexroth Corp.

Axial piston variable motor | A6VM series 71
Hydraulic fluids

5

Hydraulic fluids

The variable motor A6VM is designed for operation with
mineral oil HLP according to DIN 51524.
Application instructions and requirements for hydraulic
fluids should be taken from the following data sheets
before the start of project planning:

▶ 90220: Hydraulic fluids based on mineral oils and

related hydrocarbons
▶ 90221: Environmentally acceptable hydraulic fluids
▶ 90222: Fire-resistant, water-free hydraulic fluids

(HFDR/HFDU)
▶ 90223: Fire-resistan, water-containing hydraulic fluids

(HFAE, HFAS, HFB, HFC)

Details regarding the selection of hydraulic fluid

The hydraulic fluid should be selected such that the operat­ing viscosity in the operating temperature range is within
the optimum range (ν

opt

see selection diagram).

Note

At no point of the component may the temperature be higher
than 240°F (115°C). The temperature difference specified
in the table is to be taken into account when determining the
viscosity in the bearing.
If the above conditions cannot be maintained due to extreme
operating parameters, we recommend flushing the case at port

U or using a flushing and boost pressure valve (see page 63).

Viscosity and temperature of hydraulic fluids

Viscosity Temperature Comment

Cold start

ν

max

≤

7400 SUS
(1600 mm

2

/s)

θ

St

≥

−40°F (−40°C)

t≤3 min, n≤1000 rpm, without load p≤725psi (p≤50bar)

Permissible temperature difference

ΔT≤

45°F (25K) between axial piston unit and hydraulic fluid in the system

Warm-up phase

ν<

7400 to 1850SUS
(1600to 400mm

2

/s)

θ=

−40°F to −13 °F
(−40°C to −25°C)

at p≤0.7×p

nom

, n≤0.5×n

nom

and t≤15min

Continuous
operation

ν =

1850 to 47SUS
(400 to 10mm

2

/s)

This corresponds, for example on the VG46, to a temperature range
of +41°F to + 185 °F (+5°C to +85 °C)(see selection diagram)

θ=

−13°Fto +217°F
(−25°Cto +103°C)

measured at port T
Note the permissible temperature range of the shaft seal
(ΔT=approx.22°F (12K) between the bearing/shaft seal and port T)

ν

opt

=

167 to 81 SUS
(36 to 16mm

2

/s)

Range of optimum operating viscosity and efficiency

Short-term
operation

ν

min

≥

49 SUS
(7mm

2

/s)

t<3min, p<0.3×p

nom

▼ Selection diagram

60

200

300

100

500

1000

2000

3000

5000

7000

VG 22

VG 32

VG 46

VG 68

VG 100

80

150

(7)

(10)

(40)

(60)

(20)

(100)

(200)

(400)

(600)

(1000)

(1600)

(16)

(36)

−40 −13 120

0 20 40 60 80 160 195

240

(−40)

(−25) (−10)

(0)

(10) (30) (50) (70) (90) (115)

50

70

Range of optimum operating viscosity ν

opt

Optimum efficiency

Maximum permissible viscosity for cold start

Minimum permissible viscosity
for short-term operation

Temperature θ [°F (°C)]

Viscosity ν [SUS (mm

2

/s)]

Continuous operation

Warm-up phase

Minimum permissible temperature for cold start

Bosch Rexroth Corp., RE-A 91610/12.2015

6 A6VM series 71 | Axial piston variable motor

Flow direction

Filtration of the hydraulic fluid

Finer filtration improves the cleanliness level of the hydrau­lic fluid, which increases the service life of the axial piston
unit.
A cleanliness level of at least 20/18/15 is to be maintained
according to ISO 4406.
At very high hydraulic fluid temperatures (195°F (90°C) to
maximum 217°F (103°C), measured at port T), a cleanli­ness level of at least 19/17/14 according to ISO 4406 is
necessary.

Influence of case pressure on beginning of control

An increase in case pressure affects the beginning of con­trol when using the following control options:

▶ HP, HA.T3: Increase

▶ DA: Decrease
With the following settings, an increase in case pressure
will have no effect on the beginning of control:
HA.R and HA.U, EP, HA
The factory setting of the beginning of control is made at

p

abs

= 30psi (2bar) case pressure.

Flow direction

Direction of rotation, viewed on drive shaft

clockwise (cw) counter-clockwise (ccw)

A to B B to A

Shaft seal

Permissible pressure loading

The service life of the shaft seal will be influenced by the
speed of the axial piston unit and the leakage pressure in
the housing (case pressure). Momentary pressure spikes
(t<0.1s) of up to 145psi (10bar) are permitted. The
service life of the shaft seal decreases with increasing
frequency of pressure spikes and increasing mean differen­tial pressure.
The case pressure must be equal to or higher than the
ambient pressure.

0

15 (1)

30 (2)

45 (3)

60 (4)

75 (5)

2000 4000 6000 8000 10000

NG170, 215

NG85

NG60

NG115, 150

NG170

NG60

NG85

NG115NG150

NG215

Differential pressure Δp [psi (bar)]

Rotational speed n [rpm]

The FKM shaft seal may be used for leakage temperatures
from -13°Fto+240°F(-25°Cto+115°C). For application
cases below -13°F(-25°C), an NBR shaft seal is required
(permissible temperature range:

-40°Fto+195°F(-40°Cto +90°C)).

RE-A 91610/12.2015, Bosch Rexroth Corp.

Axial piston variable motor | A6VM series 71
Operating pressure range

7

Operating pressure range

Pressure at working port A or B Definition

Nominal pressure p

nom

6500 psi (450bar) The nominal pressure corresponds to the maximum design pressure.

Maximum pressure p

max

7250psi (500bar) The maximum pressure corresponds to the maximum operating pres-

sure within the single operating period. The sum of the single operating
periods must not exceed the total operating period.

Single operating period 10s

Total operating period 300h

Minimum pressure
(high-pressure side)

365psi (25bar) Minimum pressure at the high-pressure side (A or B) which is required

in order to prevent damage to the axial piston unit.

Minimum pressure – pump operating
mode (inlet)

See the diagram below To prevent damage to the axial piston motor in pump operating mode

(change of high-pressure side with unchanged direction of rotation, e. g.
when braking), a minimum pressure must be guaranteed at workingport
(inlet). This minimum pressure is dependent on the speed and displace­ment of the axial piston unit (see characteristic curve)

Summation pressure p

Su

(pressure A + pressure B)

10150psi (700bar) The summation pressure is the sum of the pressures at both working

ports (A and B)

Rate of pressure change R

Amax

Maximum permissible rate of pressure build-up and reduction during a
pressure change over the entire pressure range.

With integrated pressure-relief valve 130530psi/s (9000bar/s)

Without pressure-relief valve 232060psi/s (16000bar/s)

▼ Rate of pressure change R

Amax

p

nom

∆t

∆p

Time t

Pressure p

▼ Pressure definition

Single operating period

Pressure p

t

1

t

2

t

n

Minimum pressure (high-pressure side)

Maximum pressure p

max

Nominal pressure p

nom

Time t

Total operating period = t1 + t2 + ... + t

n

▼ Minimum pressure – pump operating mode (inlet)

V

g max

V

g x

0.3 V

g max

15 (1)

30 (2)

60 (4)

90 (6)

115 (8)

145 (10)

175 (12)

200 (14)

230 (16)

0 0.4 0.7 1.0 1.3 1.6

Inlet pressure p

abs

[psi (bar)]

Rotational speed n / n

nom

This diagram is valid only for the optimum viscosity range
from

ν

opt

=170to73SUS (36 to 16mm2/s).

Please contact us if these conditions cannot be satisfied.

Note

Operating pressure range valid when using hydraulic
fluids based on mineral oils. Values for other hydraulic
fluids, please contact us.

Bosch Rexroth Corp., RE-A 91610/12.2015

8 A6VM series 71 | Axial piston variable motor

Technical data

Technical data

Size NG 60 85 115 160 170 215

Displacement geometric,
per revolution

V

g max

in

3

3.78 5.20 7.05 9.28 10.48 13.21

cm

3

62.0 85.2 115.6 152.1 171.8 216.5

V

g min

in

3

0 0 0 0 0 0

cm

3

0 0 0 0 0 0

V

g x

in

3

2.26 3.11 4.21 5.55 3.97 5.00

cm

3

37 51 69 91 65 82

Maximum speed

1)

(complying with the maximum
permissible inlet flow)

at V

g max

n

nom

rpm 4450 3900 3550 3250 3100 2900

at V

g

< V

g x

(see diagram) n

max

rpm 7200 6800 6150 5600 4900 4800

at V

g 0

n

max

rpm 8400 8350 7350 6000 5750 5500

Inlet flow

2)

at n

nom

and V

g max

q

v max

gpm 73 88 108 131 141 166
l/min 276 332 410 494 533 628

Torque

3)

at V

g max

and

Δp = 6500psi (450bar)

T

lb-ft 326 448 608 800 903 1139
Nm 444 610 828 1089 1230 1550

Rotary stiffness

V

g max

to Vg/2 c

min

lb-ft/rad 10695 16521 27511 32084 38279 51334
kNm/rad 14500 22400 37300 43500 51900 69600

V

g/2

to 0

(interpolated)

c

min

lb-ft/rad 33412 49785 76559 91458 115355 144267
kNm/rad 45300 67500 103800 124000 156400 195600

Moment of inertia for rotary group

J

TW

lb-ft

2

0.1020 0.1709 0.2610 0.4295 0.5055 0.7190

kgm

2

0.0043 0.0072 0.0110 0.0181 0.0213 0.0303

Maximum angular acceleration

α

rad/s² 21000 17500 15500 11000 11000 10000

Case volume

V

gal 0.21 0.26 0.40 0.45 0.61 0.74
l 0.8 1.0 1.5 1.7 2.3 2.8

Weight, approx.

m

lbs 62 79 101 134 137 172
kg 28 36 46 61 62 78

▼ Permissible displacement in relation to speed

NG170

NG85,
115, 150

1.58 1.62

NG60,
215

4)

1.0

0.8

0.63

0.4

0.38

0.2

0

V

g x

V

g x

0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.74

Displacement V

g

/ V

g max

Rotational speed n / n

nom

Notes

▶ Theoretical values, without efficiency levels and toler-

ances; values rounded

▶ Operation above the maximum values or below the mini-

mum values may result in a loss of function, a reduced
service life or in the destruction of the axial piston unit.
Other permissible limit values, such as speed variation,
reduced angular acceleration as a function of the fre­quency and the permissible angular acceleration at start
(lower than the maximum angular acceleration) can be
found in data sheet 90261.

Determining the operating characteristics

Inlet flow

q

v

=

V

g

× n

[gpm]

(

Vg × n

)

[l/min]

231 × η

v

1000 × η

v

Rotational
speed

n

=

q

v

× 231 × η

v

[rpm]

(

qv × 1000 × η

v

)

[rpm]

V

g

V

g

Torque

T

=

V

g

× Δp × η

mh

[lb-ft]

(

Vg × Δp × η

mh

)

[Nm]

24 × π 20 × π

Power

P

=

2 π × T × n

=

qv × Δp × η

t

[HP]

(

2 π × T × n

=

qv × Δp × η

t

)

[kW]

33000

1714

60000

600

Key

V

g

= Displacement per revolution [in3 (cm3)]

Δp

= Differential pressure [psi (bar)]

n

= Rotational speed [rpm]

η

v

= Volumetric efficiency

η

mh

= Mechanical-hydraulic efficiency

η

t

=

Total efficiency (ηt = ηv • ηmh)

1) The values are valid:

– For the optimum viscosity range from ν

opt

= 170to75SUS

(36to 16mm

2

/s)

– with hydraulic fluid on the basis of mineral oil

2)

Note inlet flow limitation due to counterbalance valve (see page65).

3) Torque without radial force, With radial force see page 9.

4) Values in this range on request

RE-A 91610/12.2015, Bosch Rexroth Corp.

Axial piston variable motor | A6VM series 71
Technical data

9

Permissible radial and axial forces of the drive shafts

Size NG 60 85 115 150 150 170 215

Drive shaft in 1 1/4 1 1/2 1 3/4 1 3/4 2 2 2

Maximum radial force

1)

at distance a
(from shaft collar)

a

F

q

F

q max

lb 1713

2802

3350 3585 3917

4355

5081

N 7620

12463

14902 15948 17424

19370

22602

a

in 0.94 1.06 1.32 1.32 1.32 1.32 1.32
mm 24.0 27.0 33.5 33.5 33.5 33.5 33.5

Torque maximum at F

q max

T

max

lb-ft 229 439 611 656 803 679 939
Nm 310 595 828 890 1089 1230 1445

Differential pressure maximum
at V

g max

and F

q max

Δp

max

psi 4550 6400 6500 5350 6500 6500 6100
bar 315 440 450 370 450 450 420

Maximum axial force,
at standstill or
pressure-free operation

+

F

ax

—

+F

axmax

lb 0 0 0 0 0 0 0
N 0 0 0 0 0 0 0

− F

ax max

lb 112 160 202 232 232 252 281
N 500 710 900 1030 1030 1120 1250

Permissible axial force per psi (bar)
operating pressure

+F

axperm/bar

lb/psi 0.12 0.15 0.18 0.21 0.21 0.23 0.26
N/bar 7.5 9.6 11.3 13.3 13.3 15.1 17.0

Effect of radial force Fq on the service life of bearings
By selecting a suitable direction of radial force F

q

, the load
on the bearings, caused by the internal rotary group forces
can be reduced, thus optimizing the service life of the
bearings. Recommended position of mating gear is depen­dent on direction of rotation. Examples:

Notes

▶ The values given are maximum values and do not apply

to continuous operation.

▶ The permissible axial force in –F

ax

direction is to be

avoided, because thereby the bearing life is reduced.

▶ Special requirements apply in the case of belt drives.

Please contact us.

▼ Toothed gear output drive

φ

o

p

t

=

4

5

°

φ

o

p

t

=

4

5

°

21

3

1 Direction of rotation "counter-clockwise", pressure at port B
2 Direction of rotation "clockwise", pressure at port A
3 Bidirectional direction of rotation

1) With intermittent operation

Bosch Rexroth Corp., RE-A 91610/12.2015

10 A6VM series 71 | Axial piston variable motor

HP – Proportional hydraulic control

HP – Proportional hydraulic control

The proportional hydraulic control provides infinite adjust­ment of the displacement. The control is proportional to
the pilot pressure applied to port X.

HP1, HP2 positive control

▶ Beginning of control at V

g min

(minimum torque, maxi-

mum permissible speed at minimum pilot pressure)

▶ End of control at V

g max

(maximum torque, minimum

speed at maximum pilot pressure)

HP5, HP6 negative control

▶ Beginning of control at V

g max

(maximum torque, mini-

mum speed at minimum pilot pressure)

▶ End of control at V

g min

(minimum torque, maximum

permissible speed at maximum pilot pressure)

Note

▶ Maximum permissible pilot pressure: pSt=1450psi (100bar)
▶ The control oil is internally taken from the high pressure

side of the motor (A or B). For reliable control, an oper­ating pressure of at least 435psi (30bar) is required 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 via
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.

▶ Please state the desired beginning of control in plain text

when ordering, e. g.: beginning of control at 145psi (10bar).

▶ The beginning of control and the HP characteristic curve

are influenced by the case pressure. An increase in case
pressure causes an increase in the beginning of control
(see page 6) and thus a parallel displacement of the
characteristic.

▶ A leakage flow of maximum 0.08gpm (0.3l/min) can

escape at port X due to internal leakage (operating pres­sure > pilot pressure). The control is to be suitably
configured to avoid an independent build-up of pilot
pressure.

Response time damping

The response time damping is influencing the stroke char­acteristics of the motor and thus the reaction speed of the
machine.

Standard with Size 60 to 215

HP without damping.
HP.D with throttle pin on both sides, symmetrical (as to
table)

Option with Size 60 to 215

HP 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

HP1, HP5 pilot pressure increase ΔpSt = 145psi (10bar)
HP1 positive control

A pilot pressure increase of 145psi (10bar) at port X
results in an increase in displacement from V

g min

to V

g max

.

HP5 negative control

A pilot pressure increase of 145psi (10bar) at port X
results in a decrease in displacement from

V

g max

to

V

g min

.

▶ Beginning of control, setting range 30 to 290psi (2 to

20bar)

▶ Standard setting:

Beginning of control at 45psi (3bar) (end of control at
190psi (13bar))

▼ Characteristic curve

0 0.2 0.4 0.6 0.8 1.0

V

g min

V

g max

Vg / V

g max

HP5 HP1

510 (35)

435 (30)

365 (25)

290 (20)

220 (15)
175 (12)

145 (10)

75 (5)
30 (2)

Beginning of control

setting range

Displacement

Pilot pressure p

St

[psi (bar)]

Pilot

pressure

increase

RE-A 91610/12.2015, Bosch Rexroth Corp.

Axial piston variable motor | A6VM series 71
HP – Proportional hydraulic control

11

HP2, HP6 pilot pressure increase ΔpSt = 365psi (25bar)
HP2 positive control

A pilot pressure increase of 365psi (25bar) at port X
results in an increase in displacement from V

g min

to V

g max

.

HP6 negative control

A pilot pressure increase of 365psi (25bar) at port X
results in a decrease in displacement from

V

g max

to

V

g min

.

▶ Beginning of control, setting range 75 to 725psi (5 to

50bar)

▶ Standard setting:

Beginning of control at 145psi (10bar) (end of control
at 510psi (35bar))

▼ Characteristic curve

1000 (70)

870 (60)

725 (50)

580 (40)
510 (35)
435 (30)

290 (20)

145 (10)

75 (5)

0 0.2 0.4 0.6 0.8 1.0

V

g min

V

g max

Vg / V

g max

HP6 HP2HP6 HP2

Beginning of

control setting

range

Displacement

Pilot pressure p

St

[psi (bar)]

Pilot

pressure

increase

▼ Circuit diagram HP1, HP2 (positive control)

B

A

M

1

T

2

T

1

G

X

V

g min

V

g max

U

▼ Circuit diagram HP5, HP6 (negative control)

T

2

T

1

M

1

V

g min

V

g max

B

A

U

X

G

Bosch Rexroth Corp., RE-A 91610/12.2015

12 A6VM series 71 | Axial piston variable motor

HP – Proportional hydraulic control

HP5D1, HP6D1 Pressure control, fixed setting

The pressure control overrides the HP control function.
Ifthe load torque or a reduction in motor swivel angle
causes the system pressure to reach the setpoint value of
the pressure control, the motor will swivel towards a larger
displacement.
The increase in the displacement and the resulting reduc­tion in pressure cause the control deviation to decrease.
With the increase in displacement the motor develops more
torque, while the pressure remains constant.
Setting range of the pressure control valve 1150 to6500psi
(80 to 450bar)

▼ Circuit diagram HP5D1, HP6D1 (negative control)

T

2

T

1

M

1

V

g min

V

g max

B

A

G

X

U

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

Vg / 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 char­acteristics 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 Corp., RE-A 91610/12.2015

14 A6VM series 71 | Axial piston variable motor

EP – Proportional electric control

▼ Circuit diagram EP1, EP2 (positive control)

B

A

M

1

T

2

T

1

G

V

g min

V

g max

U

▼ Circuit diagram EP5, EP6 (negative control)

U

T

2

T

1

M

1

V

g min

V

g max

B

A

G

EP5D1, EP6D1 Pressure control, fixed setting

The pressure control overrides the EP control function. If
the load torque or a reduction in motor swivel angle causes
the system pressure to reach the setpoint value of the
pressure control, the motor will swivel towards a larger
displacement.
The increase in the displacement and the resulting reduc­tion in pressure cause the control deviation to decrease.
With the increase in displacement the motor develops more
torque, while the pressure remains constant.
Setting range of the pressure control valve 1150 to 6500psi
(80 to 450bar)

▼ Circuit diagram EP5D1, EP6D1 (negative control)

U

T2

T

1

V

g min

V

g max

B

A

G

M

1

RE-A 91610/12.2015, Bosch Rexroth Corp.

Axial piston variable motor | A6VM series 71
HZ – Two-point hydraulic control

15

HZ – Two-point hydraulic control

The two-point hydraulic control allows the displacement to
be set to either V

g min

or V

g max

by switching the pilot pres-

sure at port X on or off.

HZ5, HZ7 negative control

▶ Position at V

g max

(without pilot pressure, maximum

torque, minimum speed)

▶ Position at V

g min

(with pilot pressure >145psi (10bar)
activated, minimum torque, maximum permissible
speed)

▼ Characteristic curve HZ5, HZ7

V

g min

V

g max

Displacement

0

145 (10)

Pilot pressure Δp

S

[psi (bar)]

1450 (100)

Note

▶ Maximum permissible pilot pressure: 1450psi (100bar)
▶ The control oil is internally taken out of the high pres-

sure side of the motor (A or B). For reliable control, an
operating pressure of at least 435psi (30bar) is
required 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 via 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 char­acteristics of the motor and thus the reaction speed of the
machine.

Standard with Size 150 to 215

HZ5 with throttle pin on both sides, symmetrical (as to table)

Standard with Size 60 to 115

HZ7 (Synchronizing piston) with throttle pin on both sides,
symmetrical (as to table)

▼ Overview Throttle Pins

Size 60 85 115 150 170 215

Groove
size

[inch] 0.012 0.012 0.012 0.022 0.022 0.026

[mm] 0.30 0.30 0.30 0.55 0.55 0.65

▼ Circuit diagram HZ5 (negative control) size 150 to 215

T

2

T

1

M

1

V

g min

V

g max

B

A

X

G

U

▼ Circuit diagram HZ7 (negative control) size 60 to 115

T

1

U

T

2

X

G

V

g min

V

g max

B

A

Bosch Rexroth Corp., RE-A 91610/12.2015

16 A6VM series 71 | Axial piston variable motor

EZ – Two-point electric control

EZ – Two-point electric control

The two-point electric control allows the displacement to
be set to either V

g min

or V

g max

by switching the electric

current to a switching solenoid on or off.

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 required 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 via 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 char­acteristics of the motor and thus the reaction speed of the
machine.

Standard with Size 150 to 215

EZ5, EZ6 with throttle pin on both sides, symmetrical (as to
table)

Option with Size 60 to 115

EZ7, EZ8 (Synchronizing piston) with throttle pin on both
sides, symmetrical (as to table)

▼ Overview Throttle Pins

Size 60 85 115 150 170 215

Groove
size

[inch] 0.012 0.012 0.012 0.022 0.022 0.026

[mm] 0.30 0.30 0.30 0.55 0.55 0.65

Sizes 150 to 215

Technical data, solenoid with DIA37 EZ5 EZ6

Voltage 12V (±20%) 24V (±20%)

Position V

g max

de-energized de-energized

Position V

g min

energized energized

Nominal resistance (at 68°F (20°C)) 5.5Ω 21.7Ω

Nominal power 26.2W 26.5W

Minimum required active current 1.32A 0.67A

Duty cycle 100% 100%

Type of protection: see connector version on page 62

▼ Circuit diagram EZ5, EZ6 (negative control) size 150 to 215

U

T

2

T

1

M

1

V

g min

V

g max

B

A

G

Sizes 60 to 115

Technical data, solenoid with DIA45 EZ7 EZ8

Voltage 12V (±20%) 24V (±20%)

Position V

g max

de-energized de-energized

Position V

g min

energized energized

Nominal resistance (at 68°F (20°C)) 4.8Ω 19.2Ω

Nominal power 30W 30W

Minimum required active current 1.5A 0.75A

Duty cycle 100% 100%

Type of protection: see connector version on page 62

▼ Circuit diagram EZ7, EZ8 (negative control) size 60 to 115

T

1

U

T

2

G

B

A

V

g min

V

g max

RE-A 91610/12.2015, Bosch Rexroth Corp.

Axial piston variable motor | A6VM series 71
HA – Automatic high-pressure related control

17

HA – Automatic high-pressure related control

The automatic high-pressure related control adjusts the
displacement automatically depending on the operating
pressure.
The displacement of the A6VM motor with HA control is

V

gmin

(maximum speed and minimum torque). The control
unit internally measures the operating pressure at A or B
(no control line required) and upon reaching the set begin­ning of control, the controller swivels the motor from V

g min

to V

g max

with increase of operating pressure. The displace-

ment is modulated between V

gmin

and V

gmax

, thereby

depending on load conditions.

HA1, HA2 positive control

▶ Beginning of control at V

g min

(minimum torque, maxi-

mum speed)

▶ End of control at V

g max

(maximum torque, minimum

speed)

Note

▶ For safety reasons, winch drives are not permissible

with beginning of control at V

g min

(standard for HA).

▶ The control oil is internally taken out of the high pres-

sure side of the motor (A or B). For reliable control, an
operating pressure of at least 435psi (30bar) is
required 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 via 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.

▶ The beginning of control and the HA.T3 characteristic

curve are influenced by case pressure. An increase in
case pressure causes an increase in the beginning of
control (see page 6) and thus a parallel shift of the
characteristic.

Response time damping

The response time damping is influencing the stroke char­acteristics of the motor and thus the reaction speed of the
machine.

Standard with Size 60 to 215

HA1,2 with one-sided throttle pin, the throttling occurs
from V

g min

to V

g max

. (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 0.022

[mm] 0.45 0.45 0.55 0.55 0.55 0.65

Standard with Size 60 to 215

HA1, 2 with one sided throttle pin effects the stroking time
of
the motor from Vg min to Vg max. (as to table)

▼ Overview Throttle Screw

Size 60 85 115 150 170 215

Groove
size

[inch] 0.031 0.031 0.031 0.031 0.031 0.031

[mm] 0.80 0.80 0.80 0.80 0.80 0.80

Bosch Rexroth Corp., RE-A 91610/12.2015

18 A6VM series 71 | Axial piston variable motor

HA – Automatic high-pressure related control

HA1 with minimum pressure increase, positive control

An operating pressure increase of Δp ≤approx.145psi
(10bar) results in an increase in displacement from V

g min

towards V

g max

.

Beginning of control, setting range

1150 to 5100psi (80 to
350bar)
Please state the desired beginning of control in plain text
when ordering, e. g.: beginning of control at 4350psi
(300bar).

▼ Characteristic curve HA1

5800 (400)

5100 (350)

4350 (300)

3600 (250)

2900 (200)

2200 (150)

1450 (100)

1150 (80)

725 (50)

0

V

g min

V

g max

Vg / V

g max

0 0.2 0.4 0.6 0.8 1.0

Pressure increase

Δp≤approx.

145psi (10bar)

Operating pressure p [psi (bar)]

Beginning of control

setting range

Displacement

▼ Circuit diagram HA1

B

A

M

1

T

2

T

1

V

g min

V

g max

G

U

X

HA2 with pressure increase, positive control

An operating pressure increase of Δp ≤approx.1450psi
(100bar) results in an increase in displacement from V

g min

to V

g max

.

Beginning of control, setting range

1150 to 5100psi (80 to
350bar)
Please state the desired beginning of control in plain text
when ordering, e. g.: beginning of control at 2900psi
(200bar)

▼ Characteristic curve HA2

6500 (450)

5800 (400)

5100 (350)

4350 (300)

3600 (250)

2900 (200)

2200 (150)

1450 (100)

1150 (80)

725 (50)

0

V

g min

V

g max

Vg / V

g max

0 0.2 0.4 0.6 0.8 1.0

Pressure increase

Δp≤approx.

1450psi (100bar)

Operating pressure p [psi (bar)]

Beginning of control

setting range

Displacement

▼ Circuit diagram HA2

B

A

M

1

T

2

T

1

G

X

V

g min

V

g max

U

RE-A 91610/12.2015, Bosch Rexroth Corp.

Axial piston variable motor | A6VM series 71
HA – Automatic high-pressure related control

19

HA.T3 hydraulic override, remote control, proportional

With the HA.T3 control, the beginning of control can be
influenced by applying a pilot pressure to port X.
For each 15psi(1bar) of pilot pressure increase, the
beginning of control is reduced by 250psi(17bar).

Beginning of control setting 4350psi

(300bar)

4350psi
(300bar)

Pilot pressure at port X 0 psi 145psi

0 bar (10bar)

Beginning of control at 4350psi 1900psi

(300bar) (130bar)

Note

Maximum permissible pilot pressure 1450psi (100bar).

▼ Circuit diagram HA1.T3

B

A

M

1

T

2

T

1

V

g min

V

g max

X

U

G

▼ Circuit diagram HA2.T3

B

A

M

1

T

2

T

1

G

X

V

g min

V

g max

U

Bosch Rexroth Corp., RE-A 91610/12.2015

20 A6VM series 71 | Axial piston variable motor

HA – Automatic high-pressure related control

HA.U1, HA.U2 electric override, two-point

With the HA.U1 or HA.U2 control, the beginning of control
can be overridden by an electric signal to a switching sole­noid. When the override solenoid is energized, the variable
motor swivels to maximum swivel angle, without intermedi­ate position.
The beginning of control can be set between 1150 and
4350psi (80 and 300bar) (specify required setting in plain
text when ordering).

Technical data, solenoid with DIA45 U1 U2

Voltage 12 V (±20 %) 24 V (±20 %)

No override de-energized de-energized

Position V

g max

energized energized

Nominal resistance (at 68°F (20°C)) 4.8Ω 19.2Ω

Nominal power 30 W 30 W

Minimum required active current 1.5A 0.75A

Duty cycle 100 % 100 %

Type of protection: see connector version on page 62

▼ Circuit diagram HA1U1, HA1U2

G

B

A

M

1

T

2

T

1

V

g min

V

g max

U

▼ Circuit diagram HA2U1, HA2U2

M

1

T

2

T

1

B

A

V

g min

V

g max

G

U

RE-A 91610/12.2015, Bosch Rexroth Corp.

Axial piston variable motor | A6VM series 71
HA – Automatic high-pressure related control

21

HA.R1, HA.R2 electric override, electric travel direction
valve

With the HA.R1 or HA.R2 control, the beginning of control
can be overridden by an electric signal to switching sole­noid b. When the override solenoid is energized, the vari­able motor swivels to maximum swivel angle, without inter­mediate position.
The travel direction valve ensures that the preselected
pressure side of the hydraulic motor (A or B) is always
connected to the HA control, and thus determines the
swivel angle, even if the high-pressure side changes
(e. g. -travel drive during a downhill operation). This
thereby prevents undesired jerky deceleration and/or brak­ing characteristics.
The travel direction valve (see page 24) is either pressure
spring or switched by energizing switching solenoid a,
depending on the direction of rotation (travel direction).

Electric override

Technical data, solenoid b with DIA45 R1 R2

Voltage

12 V (±20 %) 24 V (±20 %)

No override de-energized de-energized

Position V

g max

energized energized

Nominal resistance (at 68°F (20°C)) 4.8Ω 19.2Ω

Nominal power 30 W 30 W

Minimum required active current 1.5A 0.75A

Duty cycle 100 % 100 %

Type of protection: see connector version on page 62

Travel direction valve, electric

Technical data, solenoid a with DIA37 R1 R2

Voltage

12 V (±20 %) 24 V (±20 %)

Direction
of rotation

Operating
pressure in

ccw B energized energized

cw A de-energized de-energized

Nominal resistance (at 68°F (20°C)) 5.5Ω 21.7Ω

Nominal power 26.2 W 26.5 W

Minimum required active current 1.32 A 0.67 A

Duty cycle 100 % 100 %

Type of protection: see connector version on page 62

▼ Circuit diagram HA1R1, HA1R2

ab

B

A

M

1

T

2

T

1

V

g min

V

g max

U

G

▼ Circuit diagram HA2R1, HA2R2

M

1

T

2

T

1

G

B

A

V

g min

V

g max

U

a

b

Bosch Rexroth Corp., RE-A 91610/12.2015

22 A6VM series 71 | Axial piston variable motor

DA – Automatic speed-related control

DA – Automatic speed-related control

The variable motor A6VM with automatic speed-related
control, type DA, is intended for use in hydrostatic travel
drives in combination with the variable pump A4VG with
DAcontrol.
A drive-speed-related pilot pressure signal is generated by
the A4VG variable pump, and that signal, together with the
operating pressure, regulates the swivel angle of the
hydraulic motor.
Increasing pump speed, i.e. increasing pilot pressure,
causes the motor to swivel to a smaller displacement
(lower torque, higher speed), depending on the operating
pressure.
If the operating pressure exceeds the pressure setpoint set
on the controller, the variable motor swivels to a larger
displacement (higher torque, lower speed).

▶ Pressure ratio p

St/pHD

= 5/100

DA closed loop control is only suitable for certain types of
drive systems and requires review of the engine and vehicle
parameters to ensure that the motor is used correctly and
that machine operation is safe and efficient. We recommend
that all DA applications be reviewed by a Bosch Rexroth
application engineer.
Detailed information is available from our sales organiza­tion.

Note

The beginning of control and the DA characteristic curve
are influenced by case pressure. An increase in case pres­sure causes a decrease in the beginning of control (see
page 6) and thus a parallel shift of the characteristic.

Response time damping

The response time damping is influencing the stroke char­acteristics of the motor and thus the reaction speed of the
machine.

Standard with Size 60 to 215

DA with one sided throttle pin effects the stroking time of
the motor from V

g min

to V

g max

. (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 0.022

[mm] 0.45 0.45 0.55 0.55 0.55 0.65

DA0 hydraulic travel direction valve, negative control

Depending on the direction of rotation (travel direction),
the travel direction valve is switched by using pilot pres­sures connections X

1

or X2.

Direction
of rotation

Operating
pressure in

Pilot pressure in

cw A X

1

ccw B X

2

▼ Circuit diagram DA0

M

1

T

2

T

1

V

g min

V

g max

B

A

G

X

3

X

2

X

1

U

RE-A 91610/12.2015, Bosch Rexroth Corp.

Axial piston variable motor | A6VM series 71
DA – Automatic speed-related control

23

DA1, DA2 electric travel direction valve + electric

V

gmax

circuit, negative control

The travel direction valve is pressure spring offset or
switched by energizing switching solenoid a, depending on
the direction of rotation (travel direction).
When the switching solenoid b is energized, the DA control
is overridden and the motor swivels to maximum displace­ment (high torque, lower speed) (electric V

g max

-circuit).

Travel direction valve, electric

Technical data, solenoid a with DIA37 DA1 DA2

Voltage

12 V (±20 %) 24 V (±20 %)

Direction
of rotation

Operating
pressure in

ccw B de-energized de-energized

cw A energized energized

Nominal resistance (at 68°F (20°C)) 5.5Ω 21.7Ω

Nominal power 26.2 W 26.5 W

Minimum required active current 1.32 A 0.67 A

Duty cycle 100 % 100 %

Type of protection: see connector version on page 62

Electric override

Technical data, solenoid b with DIA37 DA1 DA2

Voltage 12 V (±20 %) 24 V (±20 %)

No override de-energized de-energized

Position V

g max

energized energized

Nominal resistance (at 68°F (20°C)) 5.5Ω 21.7Ω

Nominal power 26.2 W 26.5 W

Minimum required active current 1.32 A 0.67 A

Duty cycle 100 % 100 %

Type of protection: see connector version on page 62

▼ Circuit diagram DA1, DA2

T

2

T

1

M

1

V

g min

V

g max

B

A

G

X

3

a

b

X

1

U