3
Electric characteristics of the 2/2-way solenoid valve
Connector wiring
Function
electro magnetic
Nominal voltage
24 VDC
Nominal power
12 W
DIN 43650-1
Form A: 2+PE-PG9
With failsafe versions R and L, a defined spool position is reached
when the electric supply to the valve electronics is switched off
while the pilot pressure is still applied. With version M, the resulting spool
position is undefined.
Electrically operated failsafe version
The safe position of the spool will be obtained after switching off the
integrated 2/2-way solenoid seat valve.
With failsafe versions W, U and G, after cut-off of the solenoid, the
spool moves to midposition. When the electric supply to the valve
electronics is switched off while the pilot pressure is still effective and the solenoid
is still switched on, the spool will move to a defined end position with versions U
and G.
With failsafe version P, the integrated seat valve will shut off the
external pilot pressure after switching off the solenoid.
Cutting off the 24 VDC supply to the solenoid operated 2/2-way
seat valve
To protect relay contacts or semiconductors against damage, a Zener
diode is required
Consider inductive load of the solenoid coil!
1
) With version
P
at
210
bar pilot or operating pressure,
with versions
G
,
S
and
H
at
140
bar pilot or operating pressure,
fluid viscosity of 32 mm˝/s and fluid temperature of 40
°
C.
2
) For long life wear protection of metering lands
For additional technical information such as
dimensions, ordering information, etc., see the
D660 series catalog.
Series D661-...
(for code letter of valve version see pages 18/19)
G
S...F
S...G
H
P...A
P...B
Mounting pattern
ISO 4401, version G.. with second tank port
ISO 4401 - 05 - 05 - 0 - 94
ISO 4401 - 05 - 05 - 0 - 94
With series D661-P...B 5-way version, the port
designated T
2
is used as second pressure port P
2
Mass
[kg]
5.7
5.5
4.2
5.5
5.6
4.7
Rated flow Q
N
[l/min]
see nameplate of the valve
see nameplate of the valve
at Dp
N
= 5 bar per land, tolerance
±
10 %
Null leakage flow
1
)
total, max.
[l/min]
3.0 to 5.0 (
S...F
2.5 to 4.0)
3.5
4.4
Pilot leakage flow
1
)
pilot stage only
[l/min]
2.5
1.4
2.5
2.5
1.7
2.6
Pilot flow
1
)
max, for 100% step input
[l/min]
2.5
1.4
2.5
2.5
1.7
2.6
Max. operating pressure p
max
Main stage
ports P, A, B
[bar]
350
350
port T, (T
2
) with Y internal
[bar]
20% of pilot pressure, max.
100
210
port T, (T
2
) with Y external
[bar]
350
350
Pilot stage
regular version
[bar]
210
280
with dropping orifice (on request)
[bar]
350
350
Temperature range
Ambient
[
°
C]
- 20 to + 60
- 20 to + 60
Fluid
[
°
C]
- 20 to + 80
- 20 to + 80
Operating fluid
mineral oil based hydraulic
mineral oil based hydraulic
fluid according to DIN 51524,
fluid according to DIN 51524,
part 1 to 3, others upon request
part 1 to 3, others upon request
Viscosity
recommended
[mm
2
/s]
5 to 45
15 to 45
allowable
[mm
2
/s]
5 to 400
5 to 400
System filter
High pressure filter, mounted
High pressure filter, mounted
in the main flow withoutin the main flow without
bypass, but with dirt alarm
bypass, but with dirt alarm
Class of cleanliness according to
ISO 4406
16 / 13 or better
2
)
16 / 13 or better
2
)
NAS 1638
7 or better
2
)
7 or better
2
)
Filter rating
for normal operation
β
15
75 (15
µ
m absolute)
β
15
75 (15
µ
m absolute)
for longer life
β
10
75 (10
µ
m absolute)
β
10
75 (10
µ
m absolute)
Technical Data
ATTENTION
ATTENTION
ATTENTION
ATTENTION
ATTENTION
ATTENTION
