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Bosch Rexroth AG
Technical data
Electrical
Degree of protection of valve to EN 60529
Type of signal
Nominal current per coil
Resistance per coil
Inductance at 60 Hz and
100 % nominal current:
In case of actuation using non-Rexroth amplifiers, we recommend a superimposed dither signal
Information on explosion protection
Type test certification
Range of application to according
Article 505, NEC
®
Ambient temperature range
Pressure fluid temperature range
Valve is only supplied with power from
certified, intrinsically safe circuits
with the following maximum values
Conditions for use in Zone 0
Required free space for burst protection
Additional requirements for use in zone 0
Additional requirements for use in zone 2
External trigger electronics
1)
Servo amplifier
in modular design
Recommended safety barrier
Note:
The servo amplifier and safety barrier must be operated outside the potentially explosive atmosphere!
1)
Order separately
Hydraulics
Connection in parallel
U
max
I
max
P
mW 907
max
Analog Typ VT 11021 as per Technical Data Sheet RE 29743
Single-
1)
channel
4WS2EM...VH1...-100
IP 65 with correctly mounted and secured plug-in connector
analog
mA 30
Ω 85
H 0.25
FM Approved
IS Class I, Zone 0, AEx ia IIC T4
NI Class I, Zone 2
°C –20 ... +60
°C –15 ... +60
V 9.3
mA 390
The valve cap consists of cast aluminium.
When the valve is to be used as a Category 1 device in Zone
0, the valve cap must be protected in such a manner that no
ignitable sparks from friction, impact or grinding can be pro-
duced, even in the event of rarely occurring malfunctions.
Note:
The hydraulic fluid used must have an ignition temperature of
at least 150 °C.
The specified free space for burst protection (see Page 12)
must remain free, in order that excess pressure occurring in
the event of a fault can be dissipated through the plug in the
valve cap.
Safety barrier required
May be used without safety barrier
Messrs. Stahl, Type 9001/02-093-390-101
RA 29583-VH1-100-B1
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