EN 5.927.4.1/11.18
1
2/2 Solenoid Directional Valve
Poppet Type, Pilot Operated
Normally Closed
With Electronic Switch Position
Monitoring
UNF Cartridge – 350 bar
WS16Z-01E
up to 150 l/min
up to 350 bar
The directional valve is a pilot operated
poppet valve with electronic switch
position monitoring.
When de-energized the valve is closed
from port 2 to port 1. Flow is possible
in the opposite direction. The valve
piston opens at a dierential pressure of
approx. 1.6 bar (check valve function).
When energized, there is free ow
through the valve from port 2 to port 1 at
a dierential pressure of approx. 1.5 bar.
Flow in the reverse direction from 1 to 2
is prohibited.
Please mind: In pilot operated solenoid
valves, shift performance and response
times depend i.a. very much on pressure
drop and volume ow during actuation.
This applies particularly to valves with
piston seals and/or position sensors.
FEATURES
z With integrated electronic switch position monitoring
z Excellent switching performance by high power HYDAC solenoid
z Coil seals protect the solenoid system
z Wide variety of coils and connectors available
z Exposed surfaces zinc-nickel plated for increased corrosion protection (1.000 h Salt spray test)
FUNCTION
SPECIFICATIONS*
Operating pressure: max. 350 bar
Nominal Flow: max. 150 l/min at 280 bar; 100 l/min at 350 bar
Leakage: leakage-free, max. 5 drops/min (0.25 cm
3
/min)
at p
2
= 350 bar and
p
1
= 0 bar, ν = 33 mm
2
/s
Media operating temperature range: min. -20 °C to max. +100 °C
Ambient temperature range: min. -20 °C to max. + 60 °C
Operating Fluid: Hydraulic oil to DIN 51524 Part 1, 2 and 3
Viscosity range: min. 10 mm²/s to max. 420 mm²/s
Filtration of operating liquid:
(according to ISO 4406)
p < 210 bar: min. 20/18/15
for extended lifetime recommended 17/15/12
p > 210 bar: min. 18/16/13
for extended lifetime recommended 16/14/11
MTTF
d
: 150 - 1200 years, according to DIN EN ISO 13849-1
Installation: no orientation restrictions
Materials: Valve body: steel
Piston: hardened and ground steel
Seals: NBR (standard)
FKM (optional, media op. temperature
range -20 °C to +120 °C)
Back-up rings: PTFE
Coil: steel / polyamide
Cavity: FC16-2
Weights: 0.79 kg
Electrical data
Type of voltage: DC: direct current solenoid
AC: alternating current solenoid with a bridge rectier built
into the coil
Current draw at 20°C: 1.5 A for 12 V DC
0.8 A for 24 V DC
Voltage tolerance: ± 15 % of nominal
Coil duty rating: Continuous up to 115 % of nominal voltage
at 60 °C ambient temperature
Response time:
(at p
max
, Q
max
, ν = 33 mm
2
/s)
energized: approx. 50 ms; de-energized: approx. 70 ms
substantially extended response times possible at other
operating conditions
Type of coil Coil…-40-1836
Sensor data
Supply voltage: 24 V: 20 to 32 V DC
12 V: 10.5 to 16 V DC
Reverse polarity protection of supply: yes
Outputs: 2 with change-over function PNP positive switching
Output load: ≤ 400 mA, 100 % continuous
Short-circuit protection: Provided
Connector: Male connector M12 x 1 (4 pole)
Protection class: IP65 to DIN40050
CE-conformity: 93/68/EEC 2014/30/EC
EMC: DIN EN 61000-6-1-2-3-4
Humidity requirements: 0 - 95 % rel. (according to DIN 40040)
Sensor connections:
*see "Conditions and instructions for valves" in brochure 53.000