Electric supply
0
±
15 VDC
±
3%
2
24 VDC
(19 to 32 VDC)
Pilot stage
Pilot flow
Pilot pressure
at p
X
= 140 bar
p
X
A
ServoJet
1.3
15 – 280
B
ServoJet
2.0
15 – 280
F
Nozzle/Flapper
1.15
15 – 280
G
Nozzle/Flapper
0.65
15 – 280
Maximum operating pressure p
P
Pilot valve
B
70 bar. At p
X
≤
70 bar (X and Y external) operating pressure
A/B
in port P, A, B
and T up to 350 bar possible.
F
210 bar. At p
X
≤
210 bar (X external) operating pressure
A/B
in port P, A, B
and T up to 350 bar possible.
H
280 bar. At p
X
≤
280 bar (X and Y external) operating pressure
A/B
in port P, A, B
and T up to 350 bar possible.
K
350 bar (
with dropping orifice in filter cover)
A/B, F/G
Valve version
P
Standard spool
Model designation
assigned at the factory
Specification status
–
Series specification
E
Preseries specification
Z
Special specification
Factory identification
Type designation
D661
Model-Number
Rated flow
Q
N
[l/min] at Dp
N
= 5 bar per land
Valve version
16
16
P...F/G –
25
25
P...F/G –
30
30
–
P...A/B
60
60
P...F/G P...A/B
80
80
–
P...A/B
Main spool type
A
4-way:
~ critical lap, linear characteristic
D
4-way:
10 % overlap, linear characteristic
P
4-way:
P
➔
A, A
➔
T: ~ critical lap, curvilinear characteristic
P
➔
B: 60 % overlap, curvilinear characteristic
B
➔
T: 50 % underlap, linear characteristic
U
5-way:
P
➔
A, P
2
➔
B, A
➔
T:~crit. lap, curvil. character.
Y
4-way:
~ critical lap, curvilinear characteristic
X
Special spool on request
Options may increase price.
Technical changes are reserved.
Valve connector
for supply voltage
S
6 + PE-pole
DIN 43563
0
2
E
11 + PE-pole
DIN 43651
—
2
*SV:
Solenoid valve
**VE:
Valve electronics
Spool position of main stage without electric or hydraulic supply
O
undefined
for all valve types
Mechanical failsafe
version
Position
p
P
[bar] p
X
extern [bar]
A
P
➔
B, A
➔
T
≥
15
≥
15
M
Mid position
≥
15
<1
undefined
≥
15
≥
15
R
Mid position
≥
15
<1
P
➔
B, A
➔
T
≥
15
≥
15
L
Mid position
≥
15
<1
P
➔
A, B
➔
T
≥
15
≥
15
Electrically controlled failsafe version
Position p
P
[bar] p
X
ext SV* VE**
W
Mid position
≥
15
≥
15
off
on
Mid position
≥
15
<1
on
on
U
Mid position
≥
15
≥
15
off
on
P
➔
B, A
➔
T
≥
15
≥
15
on
off
(without electric supply)
V
P
➔
B, A
➔
T
≥
15
≥
15
off
on
P
➔
B, A
➔
T
≥
15
≥
15
on
off
(without electric supply)
P
definiert ~30%
≥
15
≥
15
off
on
(P
X
Torquemotor < 2 bar)
P
➔
B, A
➔
T
≥
15
≥
15
on
off
Signals for 100% spool stroke
Command
Output
for supply voltage
A
±
10 VDC
±
10 VDC
0
2 (11+PE diff)
B
±
10 mA
±
10 mA
0
—
C
±
10 mA
±
10 VDC
—
2 (11+PE diff)
F
±
10 VDC
+2.5 to +13.5 V, enable
—
2 (6+PE)
G
±
10 mA
+2.5 to +13.5 V, enable
—
2 (6+PE)
T
±
10 VDC
±
10 V deadband comp.
0
2 (11+PE diff)
Seal material
N
NBR
Standard
V
F
luorocarbon
optional
Others on request
Pilot connections
Former code
Supply
Return
4
A, E, J
internal
internal
5
C, F, L
external
internal
6
B, G, K
external
external
7
D, H, M
internal
external
Preferred configurations are highlighted.
All combinations may not be available.
P
15
