Siemens SITRANS WS300 User manual

SITRANS
Speed sensors
SITRANS WS300
Operating Instructions
7MH7177-......(WS300)
08/2020
A5E45050935-AB
Introduction 1
Description 2
Installing/mounting 3
Connecting 4
Service and maintenance 5
Technical data 6
Certi󹪝cates and support A

Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent damage
to property. The notices referring to your personal safety are highlighted in the manual by a safety alert symbol, notices
referring only to property damage have no safety alert symbol. These notices shown below are graded according to
the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will be
used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to property
damage.
Quali󹪝ed Personnel
The product/system described in this documentation may be operated only by personnel quali󹪝ed for the speci󹪝c
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Quali󹪝ed personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended or
approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance
are required to ensure that the products operate safely and without any problems. The permissible ambient
conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identi󹪝ed by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication may
be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software described.
Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the information in this
publication is reviewed regularly and any necessary corrections are included in subsequent editions.
Siemens AG
Division Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
Document order number: A5E45050935
Ⓟ 09/2020 Subject to change
Copyright © Siemens AG 2020.
All rights reserved

Table of contents
1 Introduction ........................................................................................................................................... 5
1.1 Operating instructions scope................................................................................................ 5
1.2 Purpose of this documentation ............................................................................................ 5
1.3 Industrial Use Note .............................................................................................................. 5
2 Description............................................................................................................................................. 7
2.1 SITRANS WS300 speed sensor overview................................................................................ 7
3 Installing/mounting ............................................................................................................................... 9
3.1 Installation note................................................................................................................... 9
3.2 Dimension drawings ............................................................................................................ 9
3.3 Mounting .......................................................................................................................... 10
3.4 Mounting to a tail pulley .................................................................................................... 11
3.5 Mounting to a bend or snub pulley..................................................................................... 12
3.6 Mounting using optional threaded shaft coupling............................................................... 13
3.7 General installation steps................................................................................................... 14
3.8 Hazardous area installations............................................................................................... 15
3.8.1 Product nameplates ........................................................................................................... 15
3.8.2 Instructions speci󹪝c to hazardous area installation.............................................................. 17
4 Connecting .......................................................................................................................................... 19
4.1 Interconnection ................................................................................................................. 19
4.2 Terminals (standard version) .............................................................................................. 20
4.2.1 Terminal connections to Siemens Milltronics integrators ..................................................... 21
4.2.2 Terminal connections to SIWAREX FTC integrator ................................................................ 21
4.2.3 Terminal connections to WL241 ......................................................................................... 21
4.3 Terminals (IS version)......................................................................................................... 22
4.3.1 Terminal connections to Siemens Milltronics integrators ..................................................... 22
4.3.2 Terminal connections to SIWAREX FTC integrator ................................................................ 22
4.3.3 Terminal connections to WP241 ......................................................................................... 23
5 Service and maintenance .................................................................................................................... 25
5.1 Inspection.......................................................................................................................... 25
5.2 Recommended spare parts................................................................................................. 25
6 Technical data...................................................................................................................................... 27
6.1 Power................................................................................................................................ 27
6.2 Ambient temperature......................................................................................................... 27
6.3 Inputs................................................................................................................................ 27
SITRANS WS300
Operating Instructions, 08/2020, A5E45050935-AB 3

6.4 Outputs ............................................................................................................................. 27
6.5 Construction...................................................................................................................... 27
6.6 Approvals .......................................................................................................................... 28
ACerti󹪝cates and support ...................................................................................................................... 31
A.1 Certi󹪝cates......................................................................................................................... 31
A.2 Technical support............................................................................................................... 31
Table of contents
SITRANS WS300
4Operating Instructions, 08/2020, A5E45050935-AB

Introduction 1
1.1 Operating instructions scope
This instruction manual covers the installation, operation, and maintenance of the WS300
speed sensor.
1.2 Purpose of this documentation
We strongly recommend reading this manual, and any manual for a product used in conjunction
with the WS300 (such as a belt scale integrator), for proper installation and operation of any
component of the weighing system. Adhering to the installation and operating procedures
ensures a quick, trouble-free installation and allows for the maximum accuracy and reliability of
your weighing system.
1.3 Industrial Use Note
Note
This product is intended for use in industrial areas.
In a domestic environment this device may cause radio interference.
SITRANS WS300
Operating Instructions, 08/2020, A5E45050935-AB 5

Introduction
1.3 Industrial Use Note
SITRANS WS300
6Operating Instructions, 08/2020, A5E45050935-AB

Description 2
2.1 SITRANS WS300 speed sensor overview
SITRANS WS300 speed sensor is a low- to high-resolution shaft driven speed sensor. It measures
the shaft’s rotation by sending pulses to the integrator. The WS300 is certi󹪝ed for use in
hazardous and non-hazardous locations.
This small, light-weight speed sensor features:
• Optional resolutions for accurate measurement over a range of belt speeds
• Long bearing life
• Corrosion resistance
Pulses are generated for each rotation of the WS300 shaft. These pulses are typically fed into a
Milltronics belt scale integrator. The integrator interprets the pulses and uses them in the
calculation of belt speed, 󹪞ow rate, and material totalization.
The WS300 works with the following integrators:
• Milltronics BW100
• Milltronics BW500
• SIWAREX FTC
• SIWAREX WP241
• SIWAREX WT241
• Competitive integrators - consult your local Siemens representative
The WS300 sensors can also be used with older model Siemens integrators:
• Compuscale
• Compuscale II
• Compuscale IIA
• Compuscale III
• Compu-M
For further information about Siemens products, go to
www.siemens.com/processautomation (www.siemens.com/processautomation)
SITRANS WS300
Operating Instructions, 08/2020, A5E45050935-AB 7

Description
2.1 SITRANS WS300 speed sensor overview
SITRANS WS300
8Operating Instructions, 08/2020, A5E45050935-AB

Installing/mounting 3
3.1 Installation note
Note
Installation shall be performed only by quali󹪝ed personnel in accordance with local governing
regulations.
3.2 Dimension drawings
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

Dimensions in mm (inch)
① Shaft ø: 15.9 mm (5/8 inch)
② Rod ø: 8.0 mm (5/16 inch)
③ ½" NPT conduit entrance (optional M20 adapter available)
SITRANS WS300
Operating Instructions, 08/2020, A5E45050935-AB 9



Dimensions in mm (inch)
① ½" NPT conduit entrance (optional M20 adapter available)
3.3 Mounting
The input shaft on the WS300 is coupled to the rotating shaft on a belt driven pulley and is not
externally supported. The units arresting rod stops it from rotating with the pulley shaft and can
be 󹪝tted with a spring to soften sudden speed changes.
CAUTION
Proper attachment of the arresting rod
The arresting rod should only be solidly attached to the WS300. Fixing the rod at both ends will
apply binding forces and cause the unit’s bearings to wear prematurely.
When mounting, make sure the unit and the pulley shaft are concentric to avoid stresses on the
units bearings.
For preferred mounting locations, refer to the associated belt scale or weigh feeder instruction
manual.
For shafts that do not have enough material protruding to use a set screw, or that cannot be
removed for modi󹪝cation, a threaded shaft coupling can be used.
Installing/mounting
3.3 Mounting
SITRANS WS300
10 Operating Instructions, 08/2020, A5E45050935-AB

3.4 Mounting to a tail pulley
ุG:6
Dimension in mm (inch)
① Angle bracket slotted for arrestor rod ③ Belt
② Tension spring (supplied) ④ Flexible conduit
:6
Dimensions in mm (inch)
① Angle bracket slotted for arrestor rod ③ Arrestor rod (cut to suit)
② Tension spring (supplied) ④ Flexible conduit
Installing/mounting
3.4 Mounting to a tail pulley
SITRANS WS300
Operating Instructions, 08/2020, A5E45050935-AB 11

Note
• Distance (d) is the take up travel on the tail pulley.
• When adjusting the belt take up, ensure there is play on the arrestor rod. If the arrestor rod
is pushed against the end of its travel slot, premature wear may result on the bearing.
3.5 Mounting to a bend or snub pulley
:6
① Belt direction ③ Tension spring (supplied)
② Belt ④ Stringer
⑤ Flexible conduit
Installing/mounting
3.5 Mounting to a bend or snub pulley
SITRANS WS300
12 Operating Instructions, 08/2020, A5E45050935-AB

:6
Dimensions in mm (inch)
① Bend or snub pulley ④ Belt direction ⑦ Flexible conduit
② 3/8" drilled hole for arrestor rod ⑤ Tension spring ⑧ Pulley bearing
③ Stringer ⑥ Arrestor rod (cut to suit)
Note
When mounting to a bend or snub pulley only a 3/8 inch (10 mm) drilled hole is required for the
arrestor rod.
3.6 Mounting using optional threaded shaft coupling
$$
Installing/mounting
3.6 Mounting using optional threaded shaft coupling
SITRANS WS300
Operating Instructions, 08/2020, A5E45050935-AB 13

Dimensions in mm (inch)
① M12 x 1.75 ③ M12 x 1.75 [use adhesive when installing
threaded shaft coupling (e.g. Loctite)]
② Set screw
Note
All other installation instructions apply. See General installation steps (Page 14).
3.7 General installation steps
1. Drill out pulley shaft to a depth of 64 mm (2.5 inch) concentric to its centerline.
WARNING
Remain within speci󹪝ed tolerances
Exercise caution and remain within speci󹪝ed tolerances.
2. Drill out and thread the set screw hole.
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Dimensions in mm (inch)
① M8 x 1.25 (5/16-18 UNC) set screw (by customer)
② 16.00 mm (0.630 inch) dia., 16.07 mm (0.633 inch)
3. Attach angle iron bracket to work with the arrestor rod (if mounting on a tail pulley).
4. Cut the arrestor rod to a suitable length.
Installing/mounting
3.7 General installation steps
SITRANS WS300
14 Operating Instructions, 08/2020, A5E45050935-AB

5. Insert the WS300 shaft into the pulley shaft and lock with set screw on 󹪞at of shaft.

Dimensions in mm (inch)
① Example slot for arrestor rod when mounted to tail pulley - use drilled hole for snub or
bend pulley.
② 127 mm (5 inch) approx.
③ Secure with bolt or post
④ Angle iron bracket or conveyor stringer web
⑤ Tension spring
6. Attach spring to arresting rod and frame.
7. Encase wiring in 󹪞exible conduit to allow unit to 󹪞oat.
8. Wire the WS300 to the integrator. See Terminal Connections to Siemens Milltronics
Integrators (Page 21), or Terminal Connections to SIWAREX FTC Integrator (Page 21).
WARNING
Proper attachment of the arresting rod
The arresting rod should only be solidly attached to the WS300. Fixing the rod at both ends will
apply binding forces and cause the unit’s bearings to wear prematurely.
3.8 Hazardous area installations
3.8.1 Product nameplates
Note
The nameplate shown is a typical example. Please check the nameplate on your device for your
speci󹪝c device con󹪝guration.
Installing/mounting
3.8 Hazardous area installations
SITRANS WS300
Operating Instructions, 08/2020, A5E45050935-AB 15

Installing/mounting
3.8 Hazardous area installations
SITRANS WS300
16 Operating Instructions, 08/2020, A5E45050935-AB

7MHxxxx-xxxxx-xxxx
Serial No.: GYZ / V1234567
Input: 5–25 V , 25 mA MAX.
Output: 0–15 mA MAX.
Amb. Temp: See applicable certificate
Enclosure: TYPE 4X / NEMA 4X / IP65
Resolution: 32 PPR
SITRANS WS300 IS SPEED SENSOR
Assembled in Canada
with domestic and imported parts
Siemens Milltronics Process Instruments, Peterborough
Pepperl+Fuchs #NJ0.8-5GM-N
Use Only With P + F KFA5-SOT2-Ex2 & KFA6-SOT2-Ex2
II 2G 1D
Ex ia IIC T6 Gb
-25°C ʿ7Dʿ°C
Ex ia IIIC T135°C Da
PTB 00 ATEX 2048 X
KCC-REM-S49 SITRANSWS300
Class I, Div. 1,
Gr. A, B, C, D;
Class II, Div. 1,
Gr. E, F, G;
Class III
7MHxxxx-xxxxx-xxxx
Serial No.: GYZ / V1234567
Input: 5–25 V , 25 mA MAX.
Output: 0–15 mA MAX.
Amb. Temp: See applicable certificate
Enclosure: TYPE 4X / NEMA 4X / IP65
Resolution: 32 PPR
SITRANS WS300 IS SPEED SENSOR
Assembled in Canada
with domestic and imported parts
Siemens Milltronics Process Instruments, Peterborough
Pepperl+Fuchs #NJ0.8-5GM-N
Use Only With P + F KFA5-SOT2-Ex2 & KFA6-SOT2-Ex2
II 1 G D
Ex ia IIC T6 Ga
-25°C ʿ7Dʿ°C
Ex ia IIIC T135°C Da
PTB 00 ATEX 2048 X
KCC-REM-S49 SITRANSWS300
Class I, Div. 1,
Gr. A, B, C, D;
Class II, Div. 1,
Gr. E, F, G;
Class III
3.8.2 Instructions speci󹪝c to hazardous area installation
(Reference European ATEX Directive 94/9/EC, Annex II, 1/0/6)
Note
The enclosure shall be grounded to provide a discharge path for any electrostatic charges. The
equipment shall be installed as per the installation drawing A5E03436733. This assessment
does not cover any additional mechanical parts (e.g. conveyor belt etc.) that are added during
installation. Proper maintenance is required to ensure that no dust shall accumulate on the
surface of the WS300 (I.S). The maximum speed of the sensor shaft shall not exceed 1000 RPM
(0785 m/sec). Regular inspection of the shaft seal and cover gasket is required. The seals must
maintain a rating of IP6X.
The following instructions apply to equipment covered by certi󹪝cate numbers
Sira 06ATEX9303X, Sira 17ATEX2267X:
1. For use and assembly, refer to the main instructions.
2. The equipment is certi󹪝ed for use as Category 2D equipment per Sira 06ATEX9303X;
Category M1, 1G, 1D per Sira 17ATEX2267X.
3. Per certi󹪝cate Sira 17ATEX2267X, the equipment may be used with 󹪞ammable gases and
vapors with apparatus group I, IIC, IIB, IIA, IIIC, IIIB, IIIA and temperature classes T1, T2, T3 and
T4. It may also be used with 󹪞ammable dusts with apparatus group IIIC, IIIB, IIIA and a
temperature class of 135°C.
4. Per certi󹪝cate Sira 06ATEX9303X, the equipment has a degree of ingress protection of IP6X
and a temperature class of T70 °C and may be used with 󹪞ammable dusts.
5. The equipment is certi󹪝ed for use in an ambient temperature range of –40°C to +55°C
6. The equipment has not been assessed as a safety related device (as referred to by Directive
94/9/EC Annex II, clause 1.5).
7. Installation and inspection of this equipment shall be carried out by suitably trained
personnel in accordance with the applicable code of practice.
Installing/mounting
3.8 Hazardous area installations
SITRANS WS300
Operating Instructions, 08/2020, A5E45050935-AB 17

8. Repair of this equipment shall be carried out by suitably trained personnel in accordance with
the applicable code of practice.
9. Components to be incorporated into or used as replacements in the equipment shall be
󹪝tted by suitably trained personnel in accordance with the manufacturer's documentation.
10.If the equipment is likely to come into contact with aggressive substances, then it is the
responsibility of the user to take suitable precautions that prevent it from being adversely
a󹪜ected, thus ensuring that the type of protection is not compromised.
– Aggressive substances: for example, acidic liquids or gases that may attack metals or
solvents that may a󹪜ect polymeric materials.
– Suitable precautions: for example, regular checks as part of routine inspections or
establishing from the materials data sheet that it is resistant to speci󹪝c chemicals.
11.Product marking shall include the warning: Do not open when an explosive dust atmosphere
is present.
Special Conditions for Safe Use
The 'X' su󹪟x to the certi󹪝cate number relates to the following special condition(s) for safe use:
Per Sira 17ATEX2267X
• The enclosure shall be grounded to provide a discharge path for any electrostatic charges.
• The equipment shall be installed as per the installation drawing A5E03436733.
• This assessment does not cover any additional mechanical parts (e.g., conveyor belt etc) that
are added during installation.
• Proper maintenance is required to ensure that no dust shall accumulate on the surface of the
WS300 IS.
• The maximum speed of the sensor shaft shall not exceed 1000 RPM.
• Regular inspection of the shaft seal and cover gasket is required. The seals must maintain a
rating of IP6X.
• When installed in the hazardous area with type protection ‘ia’, without the optional
󹪞ameproof enclosure, the equipment shall be installed in a suitably-certi󹪝ed enclosure
providing a minimum ingress protection of IP54, which provides suitable control of
condensation and/or airborne pollution. The installer shall ensure that the maximum
ambient temperature of the equipment when installed is not exceeded.
• Cable or conduit entries shall comply with the requirements of the European Directive 94/9/
EC for Group II, Category 2D and maintain the overall IP rating of the enclosure.
Installing/mounting
3.8 Hazardous area installations
SITRANS WS300
18 Operating Instructions, 08/2020, A5E45050935-AB

Connecting 4
4.1 Interconnection
Note
Installation shall be performed only by quali󹪝ed personnel and in accordance with local
governing regulations.
Interconnection between the standard WS300 unit and the integrator should be made with
three-wire shielded, 0.82 mm2 (18 AWG) cable. To connect the WS300 IS unit to the switch
isolator, use two-wire shielded 0.324 mm2 (22 AWG) cable. Use the same cable to connect the
switch isolator to the integrator.
For both units, ground the shield at the integrator end ONLY. Connect shield to appropriate
terminal at the integrator.
Note
• Flexible conduit is recommended so that excess stress is not applied to the shaft bearings.
Use appropriate conduit and conduit 󹪝ttings or cable glands to maintain NEMA or IP rating.
• Use appropriate conduit and conduit 󹪝ttings or cable glands to maintain NEMA or IP rating.
Standard Version
Intrinsically Safe Version
SITRANS WS300
Operating Instructions, 08/2020, A5E45050935-AB 19

4.2 Terminals (standard version)
1 - +V DC
The positive power supply from the integrator connection.
2 - Clockwise Speed Out
The positive output connection of the measurement loop. This output is only used when the
sensor is rotating clockwise.
3 - Counter-Clockwise Speed Out
The positive output connection of the measurement loop. This output is only used when the
sensor is rotating counter-clockwise.
4 - Common
The common connection used as a reference point with the integrator.
GND - Ground
A ground connection. Do not use this ground for the cable shield.
Note
• Ground the cable shield at the integrator end only!
• For optimal performance the housing of the Speed Sensor must be connected to a reliable
earthed ground.
Connecting
4.2 Terminals (standard version)
SITRANS WS300
20 Operating Instructions, 08/2020, A5E45050935-AB