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Belt Weighing
Speed Sensors
SITRANS WS300
■
Technical specifications
Mode of operation
Measuring principle
Typical application
Input
Output
4
Rated operating conditions
Ambient temperature
Degree of protection
Design
Enclosure
Power supply
Cable
Recommended
4/42
Siemens WT 10 · 2010
© Siemens AG 2010
Standard: pulse from shaft rota-
tion using high precision rotary
optical encoder
IS: pulse from inductive proximity
switch
When a low- to high-resolution
speed sensor is required
Shaft rotation 0.5 to 2000 rpm,
bi-directional, resolution depen-
dent
• Unidirectional open collector
sinking output
• standard: +10 to +30 V DC,
25 mA max.
• IS: load current, 0 to 15 mA
• 32, 256, 1000, or 2000 pulses
per revolution (ppr)
• 32 ppr: 2000 max. rpm,
1066 Hz
• 256 ppr: 2000 max. rpm,
8530 Hz
• 1000 ppr: 900 max. rpm,
15000 Hz
• 2000 ppr: 450 max. rpm,
15000 Hz
Standard:
-40 to +55 °C (-40 to +131 °F)
IS:
-25 to +60 °C (-13 to +140 °F)
NEMA 4X, Type 4X, IP65
• Rated NEMA 4X, Type 4X, IP65
• Painted aluminum
• Stainless Steel (Optional)
• Standard: +10 to +30 V DC,
60 mA max.
• IS: +5 to +16 V DC, 25 mA max.
(from IS Switch Isolator)
• Standard: 3-wire shielded,
2
0.82 mm
(18 AWG)
2
• IS: 2-wire shielded 0.324 mm
(22 AWG)
• Max. run 305 m (1000 ft)
Approvals
WS300 Standard
General
Hazardous
WS300 IS (with suitable IS switch
1)
isolator or switch amplifier)
General
Hazardous
Proximity Switch Approval Ratings
(Pepperl+Fuchs #NJ0.8-5GM-N)
Optional Switch Isolator (required
2)
for WS300 IS)
(Pepperl+Fuchs #KFA5-SOT2-Ex2
or #KFA6-SOT2-Ex2)
1)
Approvals for WS300 IS are based on internally mounted NAMUR proximity
switch (Pepperl+Fuchs #NJ0.8-5GM-N) and use of suitable IS Switch Iso-
lator (Amplifier). Please see WS300 instruction manual for more informa-
tion.
2)
Approval ratings for the Proximity Switch and IS Switch Isolator are the
property of Pepperl+Fuchs. Copies of these Approval Certificates may be
obtained at http://www.siemens.com/continuous-weighing.
• CE, C-TICK
• CSA/FM Class II, Div.1,
Groups E, F, G; Class III
• ATEX II 2D Ex tD A21 IP65
T70 °C
• IECEx Ex tD A21 IP65 T70 °C
• CE, C-TICK
• IS Rating based on Switch and
Isolator Approvals below
• ATEX II 2G EEx ia IIC T6
• CSA/FM Class I, Div. 1, Groups
A, B, C, D; Class II, Div. 1,
Groups E, F, G
(system approval)
• ATEX II (1) G [EEX ia] IIC
• CSA/FM: Class 1, Div. 1, Groups
A, B, C, D; Class II, Div. 1,
Groups E, F, G
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