Siemens SITRANS WS300 User manual

Operating instructions
SITRANS WS300
Speed Sensors
06/2018Edition
SITRANS
www.siemens.com/processautomation

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Speed sensors
SITRANS WS300
Operating Instructions
06/2018
A5E4505935
-AA
Introduction
1
Description
2
Installing/mounting
3
Connecting
4
Service and maintenance
5
Technical data
6
Technical support
7
Certificates
8

Siemens AG
Division Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
Document order number: A5E4505935
Ⓟ
06/2018 Subject to change
Copyright © Siemens AG 2018.
All rights reserved
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.
Qualified Personnel
The product/system described in this documentation may be operated only by
personnel qualified
for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualified 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 identified 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.

SITRANS WS300
Operating Instructions, 06/2018, A5E4505935-AA 3
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..........................................................................................13
3.6 Mounting using optional threaded shaft coupling ...................................................................15
3.7 General installation steps .......................................................................................................16
3.8 Hazardous area installations ..................................................................................................18
3.8.1 Product nameplates................................................................................................................18
3.8.2 Instructions specific to hazardous area installation ................................................................19
4 Connecting .............................................................................................................................................. 21
4.1 Interconnection .......................................................................................................................21
4.2 Terminals (standard version) ..................................................................................................23
4.2.1 Terminal connections to Siemens Milltronics integrators .......................................................23
4.2.2 Terminal connections to SIWAREX FTC integrator................................................................24
4.2.3 Terminal connections to WL241 .............................................................................................24
4.3 Terminals (IS version).............................................................................................................25
4.3.1 Terminal connections to Siemens Milltronics integrators .......................................................25
4.3.2 Terminal connections to SIWAREX FTC integrator................................................................25
4.3.3 Terminal connections to WP241.............................................................................................26
5 Service and maintenance ........................................................................................................................ 27
5.1 Inspection................................................................................................................................27
5.2 Recommended spare parts ....................................................................................................27

Table of contents
SITRANS WS300
4Operating Instructions, 06/2018, A5E4505935-AA
6 Technical data ......................................................................................................................................... 29
6.1 Power ..................................................................................................................................... 29
6.2 Ambient temperature ............................................................................................................. 29
6.3 Inputs ..................................................................................................................................... 29
6.4 Outputs................................................................................................................................... 29
6.5 Construction........................................................................................................................... 30
6.6 Approvals ............................................................................................................................... 31
7 Technical support .................................................................................................................................... 33
7.1 Technical support................................................................................................................... 33
8 Certificates............................................................................................................................................... 35
8.1 Certificates ............................................................................................................................. 35

SITRANS WS300
Operating Instructions, 06/2018, A5E4505935-AA 5
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.

Introduction
1.3 Industrial Use Note
SITRANS WS300
6Operating Instructions, 06/2018, A5E4505935-AA

SITRANS WS300
Operating Instructions, 06/2018, A5E4505935-AA 7
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 certified 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, flow rate, and material totalization.
The WS300 works with the following integrators:
●Milltronics BW100
●Milltronics BW500
●SIWAREX FTC
●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/protectionautomation (www.siemens.com/protectionautomation)

Description
2.1 SITRANS WS300 speed sensor overview
SITRANS WS300
8Operating Instructions, 06/2018, A5E4505935-AA

SITRANS WS300
Operating Instructions, 06/2018, A5E4505935-AA 9
Installing/mounting
3
3.1
Installation note
Note
Installation shall be performed only by qualified personnel in accordance with local governing
regulations.
3.2
Dimension drawings
Dimensions in mm (inch)
①Shaft ø: 15.9 mm (5/8 inch)
②Rod ø: 8.0 mm (5/16 inch)
③½" NPT conduit entrance (optional M20 adapter available)

Installing/mounting
3.3 Mounting
SITRANS WS300
10 Operating Instructions, 06/2018, A5E4505935-AA
Dimensions in mm (inch)
①½" 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 fitted 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 modification, a threaded shaft coupling can be used.

Installing/mounting
3.4 Mounting to a tail pulley
SITRANS WS300
Operating Instructions, 06/2018, A5E4505935-AA 11
3.4
Mounting to a tail pulley
Dimension in mm (inch)
①Angle bracket slotted for arrestor rod
③Belt
②
Tension spring (supplied)
④
Flexible conduit

Installing/mounting
3.4 Mounting to a tail pulley
SITRANS WS300
12 Operating Instructions, 06/2018, A5E4505935-AA
Dimensions in mm (inch)
①
Angle bracket slotted for arrestor rod
③
Arrestor rod (cut to suit)
②
Tension spring (supplied)
④
Flexible conduit
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.

Installing/mounting
3.5 Mounting to a bend or snub pulley
SITRANS WS300
Operating Instructions, 06/2018, A5E4505935-AA 13
3.5
Mounting to a bend or snub pulley
①Tension spring (supplied)
③Belt
②
Stringer
④
Flexible conduit

Installing/mounting
3.5 Mounting to a bend or snub pulley
SITRANS WS300
14 Operating Instructions, 06/2018, A5E4505935-AA
Dimensions in mm (inch)
①Bend or snub pulley
④Tension spring
⑦Pulley bearing
②
3/8" drilled hole for arrestor rod
⑤
Arrestor rod (cut to suit)
③
Stringer
⑥
Flexible conduit
Note
When mounting to a bend or snub pulley only a 3/8
inch (10 mm) drilled hole is required for
the arrestor rod.

Installing/mounting
3.6 Mounting using optional threaded shaft coupling
SITRANS WS300
Operating Instructions, 06/2018, A5E4505935-AA 15
3.6
Mounting using optional threaded shaft coupling
Dimensions in mm (inch)
①
M12 x 1.75
③
M12 x 1.75 [use adhesive when installing
threaded shaft coupling (e.g. Loctite)]
②Set screw
Note
All other installation instructions apply. See
General installation steps (Page 16).

Installing/mounting
3.7 General installation steps
SITRANS WS300
16 Operating Instructions, 06/2018, A5E4505935-AA
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 specified tolerances
Exercise caution and remain within specified tolerances.
2. Drill out and thread the set screw hole.
Dimensions in mm (inch)
①M8 x 1.25 (5/16-18 UNC) set screw (by customer)
②16.00 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
Operating Instructions, 06/2018, A5E4505935-AA 17
5. Insert the WS300 shaft into the pulley shaft and lock with set screw on flat of shaft.
Dimensions in mm (inch)
①Example slot for arrestor rod when mounted to tail pulley - use drilled hole for snub or
bend pulley.
②127 mm (5 inch) approx.
③Secure with bolt or post
④Angle iron bracket or conveyor stringer web
⑤Tension spring
6. Attach spring to arresting rod and frame.
7. Encase wiring in flexible conduit to allow unit to float.
8. Wire the WS300 to the integrator. See Terminal Connections to Siemens Milltronics
Integrators (Page 23), or Terminal Connections to SIWAREX FTC Integrator (Page 24).
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.

Installing/mounting
3.8 Hazardous area installations
SITRANS WS300
18 Operating Instructions, 06/2018, A5E4505935-AA
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 specific device configuration.