Siemens SITRANS WS100 User manual

Instruction Manual January 2009
WS100 SPEED SENSOR
sitrans

© Siemens Milltronics Process Instruments Inc. 2008
Safety Guidelines: Warning notices must be observed to ensure personal safety as well as that of
others, and to protect the product and the connected equipment. These warning notices are
accompanied by a clarification of the level of caution to be observed.
Qualified Personnel: This device/system may only be set up and operated in conjunction with this
manual. Qualified personnel are only authorized to install and operate this equipment in accordance with
established safety practices and standards.
Unit Repair and Excluded Liability:
•The user is responsible for all changes and repairs made to the device by the user or the user’s
agent.
•All new components are to be provided by Siemens Milltronics Process Instruments Inc.
•Restrict repair to faulty components only.
•Do not reuse faulty components.
Warning: This product can only function properly and safely if it is correctly transported, stored,
installed, set up, operated, and maintained.
This product is intended for use in industrial areas. Operation of this equipment ina residential area
may cause interference toseveral frequency based communications.
Note: Always use product in accordance with specifications.
Copyright Siemens Milltronics Process
Instruments Inc. 2008. All Rights Reserved
Disclaimer of Liability
This document is available in bound version and in
electronic version. We encourage users to purchase
authorized bound manuals, or to view electronic versions
as designed and authored by Siemens Milltronics Process
Instruments Inc. Siemens Milltronics Process Instruments
Inc. will not be responsible for the contents of partial or
whole reproductions of either bound or electronic
versions.
While we have verified the contents of this
manual for agreement with the
instrumentation described, variations
remain possible. Thus we cannot
guarantee full agreement. The contents of
this manual are regularly reviewed and
corrections are included in subsequent
editions. We welcome all suggestions for
improvement.
Technical data subject to change.
MILLTRONICS®is a registered trademark of Siemens Milltronics Process Instruments Inc.
Contact SMPI Technical Publications European Authorized Representative
at the following address:
Technical Publications Siemens AG
Siemens Milltronics Process Instruments Inc. Industry Sector
1954 Technology Drive, P.O. Box 4225 76181 Karlsruhe
Peterborough, Ontario, Canada, K9J 7B1 Deutschland
Email: [e-mail]
•For a selection of Siemens Milltronics level measurement manuals, go to:
www. siemens.com/processautomation. Under Process Instrumentation, select
Level
Measurement
and then go to the manual archive listed under the product family.
•For a selection of Siemens Milltronics weighing manuals, go to:
www. siemens.com/processautomation. Under Weighing Technology, select
Continuous
Weighing Systems
and then go to the manual archive listed under the product family.

i
Table of Contents
Safety Notes .............................................................................................................................................1
Safety Marking Symbols .............................................................................................................1
The Manual ...............................................................................................................................................2
Technical Support ..........................................................................................................................2
SITRANS WS100 Speed Sensor ....................................................................................... 3
Specifications ......................................................................................................................4
Installation .......................................................................................................................... 6
Dimensions ...............................................................................................................................................6
Mounting ...................................................................................................................................................7
Mounting to a Tail Pulley .......................................................................................................................8
Mounting to a Bend or Snub Pulley ...................................................................................................9
General Installation Steps .............................................................................................. 10
Interconnection ................................................................................................................ 11
Connection ..............................................................................................................................................11
Wiring .......................................................................................................................................................11
Terminal Connections to Siemens Integrators ..............................................................................12
Terminal Connections to SIWAREX FTC Integrator ......................................................................12
Maintenance ...................................................................................................................... 13
Inspection ................................................................................................................................................13

ii

7ML19985LU01 SITRANS WS100 Speed Sensor – INSTRUCTION MANUAL Page 1
Safety Notes1
Special attention must be paid to warnings and notes highlighted from the rest of the text
by grey boxes.
Safety Marking Symbols
1. This symbol is used when there is no corresponding symbol on the product.
WARNING: relates to a caution symbol on the product, and means
that failure to observe the necessary precautions can result in
death, serious injury, and/or considerable material damage.
WARNING1: means that failure to observe the necessary precau-
tions can result in death, serious injury, and/or considerable
material damage.
Note: means important information about the product or that partof the operating
manual.
In manual: On product: Description
WARNING: refer to accompanying documents (manual)
for details.

Page 2 SITRANS WS100 Speed Sensor – INSTRUCTION MANUAL 7ML19985LU01
The Manual
This instruction manual covers the installation, operation and maintenance of the
SITRANS WS100 speed sensor.
We strongly recommend reading this manual, and any manual for a product used in
conjunction with the SITRANS WS100 (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.
Integrator and speed sensor instruction manuals are available for download from
www.siemens.com/processautomation.
We always welcome suggestions and comments about manual content, design, and
accessibility. Please direct your comments to [email protected]om.
Technical Support
Support is available 24 hours a day.
To find your local Siemens Automation Office address, phone or fax number go to:
www.siemens.com/automation/partner
• Click on the tab Contacts byProduct and then find your product group (+Process
Automation > +Weighing Technology).
• Select the team Tech nical Support. Click on Next.
• Click on the appropriate continent, then select the country followed by the city.
Click on Next.
For on-line technical support go to:
www.siemens.com/automation/support-request
• Enter the device name (SITRANS WS100) or order number, then click on Search,
and select the appropriate product type. Click on Next.
• You will be prompted to enter a keyword describing your issue. Then either
browse the relevant documentation, or click on Next to email a detailed
description of your issue to Siemens Technical Support staff.
Siemens A&D Technical Support Center: phone [phone]
fax [phone]
Note: This product is intended for use in industrial areas. Operation of this
equipment in a residential area may cause interference to several frequency
based communications.

7ML19985LU01 SITRANS WS100 Speed Sensor – INSTRUCTION MANUAL Page 3
SITRANS WS100 Speed Sensor
SITRANS WS100 speed sensor is a compact, medium-resolution pulley shaft-driven belt
speed sensor with magnetic mounting. It is ideal for aggregate and mineral processing
industries.
This small, light-weight speed sensor features:
• Good resolution for accurate measurement, suitable for varying shaft speeds
• Long bearing life
Eight pulses are generated for each rotation of the SITRANS WS100 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 SITRANS WS100 IS (Intrinsically Safe) speed sensor contains a Pepperl + Fuchs,
NAMUR rated, inductive proximity switch, model number: NCN4-12GM-35-N0. The
proximity switch detects the pulses, and transmits a signal to the integrator via the
associated Switch Isolator.
The SITRANS WS100 works with the following Siemens integrators:
• Milltronics BW100
• Milltronics BW500
• SIWAREX FTC
• Competitive integrators – consult your local Siemens representative
SITRANS WS100 sensors can also be used with older model Siemens integrators:
For further information about Siemens products,
go to www.siemens.com/processautomation.
•Compuscale
•CompuscaleII
•CompuscaleIIA
•CompuscaleIII
•Compu-M

Page 4 SITRANS WS100 Speed Sensor – INSTRUCTION MANUAL 7ML19985LU01
Specifications
Power
• WS100 standard: 4.5 to 28 V DC, 16 mA
• WS100 IS (Intrinsically Safe): 5 to 25 V DC from IS Switch Isolator
Ambient Temperature
• WS100 standard: -40 to +110 °C (-40 to +230 °F)
• WS100 IS: -25 to +100 °C (-14 to +212 °F)
Input
• shaft rotation 15 to 1500 rpm, bi-directional
• shaft rotation 15 to 300 rpm, bi-directional with magnetic connector
Output
• 8 pulses per revolution
• 0 to 200 Hz, 0 to 40 Hz with magnetic connection
• WS100 standard: open collector sinking output, 25 mA
• WS100 IS: load current, 0 to 15 mA
• Integrator minimum usable frequency 2 Hz
Enclosure
• polypropylene base and target enclosure with 304 (1.4301) stainless steel access cover
• 304 (1.4301) stainless steel shaft, bearings and hardware
Cable
• WS100 standard:
• 3 m (10 ft), 3 conductor 22 AWG (0.324 mm²), PVC shielded cable
• 300 m (1000 ft) maximum cable run
•WS100IS:
• 2 m (6.5 ft), 2 conductor 26 AWG (0.129 mm²), PVC covered cable
• 300 m (1000 ft) maximum cable run to IS switch isolator
• 300 m (1000 ft) maximum cable run from IS switch isolator and integrator
Weight
• 1.22 kg (2.68 lbs)
Approvals
• WS100 standard: CE, C-TICK
• WS100 IS: uses CE, ATEX and CSA approved Pepperl + Fuchs
Proximity Switch and IS Switch Isolator
(See Switch and Isolator Approvals on next page.)

7ML19985LU01 SITRANS WS100 Speed Sensor – INSTRUCTION MANUAL Page 5
Switch and Isolator Approvals
Proximity Switch Approval Ratings (Pepperl + Fuchs #NCN4-12GM-35-N0)
• ATEX II 1D Ex iaD 20 T 108 °C (with suitable IS Switch Isolator)1
• CSA (with suitable IS Switch Isolator or Switch Amplifier): General Purpose
•CE
IS Switch Isolator Approval Ratings (Pepperl + Fuchs #KFA5-SOT2-Ex2 and #KFA6-
SOT2-Ex2)
• ATEX II 1G D [EEx ia] II C
• CSA: Class I, Div. 1, Groups A,B,C, and D.
Class II, Div. 1, Groups E,F, and G.
Class III
•CE
Note: The Approval Ratings for the Proximity Switch and the IS Switch Isolator
are the property of Pepperl + Fuchs. For current approvals go to:
http://www.am.pepperl-fuchs.com/.
1. Based on the ATEX rating of the NAMUR sensor and CSA approvals.

Page 6 SITRANS WS100 Speed Sensor – INSTRUCTION MANUAL 7ML19985LU01
Installation
Dimensions
Note: Installation shall be performed only by qualified personnel in accordance
with local governing regulations.
polypropylene
sealed housing
for ferrous
targets
Ø 3.50"
(89 mm)
0.79"
(20 mm)
1.43"
(36 mm)
2.10" (53 mm)
1.24" (31 mm)
Ø 1.75" (44 mm)
8.00"
(203 mm)
8.75"
(222 mm)
stainless steel
sensor cover
cable
magnetic shaft
connector
0.60"
(15 mm)
0.85" (22 mm)
M12x1.75 male shaft connector
2.00"
(51 mm)
Magnetic shaft
connector option
Male shaft
connector option
arrestor strap
arrestor strap
M20 (½" NPT) diameter
hole for conduit adaptor
(use flexible conduit)

7ML19985LU01 SITRANS WS100 Speed Sensor – INSTRUCTION MANUAL Page 7
Mounting
The input shaft on the SITRANS WS100 is coupled to the rotating shaft on a belt-driven
pulley with a tapped hole, and is externally supported. The unit’s arresting strap stops it
from rotating with the shaft and can be fitted to any rigid support member close to the
sensor.
When mounting, ensure the unit and the pulley shaft are concentric to avoid stresses on
the unit’s bearings.
For mounting using the magnetic connector, ensure the face of the rotating shaft on the
belt driven pulley is flat, and has no burrs or damage that may prevent flush mounting of
the magnetic connector. Attach the SITRANS WS100 speed sensor to the shaft; the
magnetic connector will center itself as the belt driven pulley rotates.
For preferred mounting locations, refer to the associated belt scale or weighfeeder
instruction manual.
WARNING: The magnetic connector has over 68 kg (150 lbs) of pulling
force. Ensure no objects areplaced between the magnetic connector and
the shaft to avoid personal injury.

Page 8 SITRANS WS100 Speed Sensor – INSTRUCTION MANUAL 7ML19985LU01
Mounting to a Tail Pulley
Note:
• When adjusting the belt take-up, ensure that the WS100 travels with the tail
pulley bearing.
VIEW "A" - "A"
"A"
"A"
SITRANS
WS100
belt
cable
restraining bracket
(mounted off bearing)
arrestor strap (mounted
to restrainging bracket)

7ML19985LU01 SITRANS WS100 Speed Sensor – INSTRUCTION MANUAL Page 9
Mounting to a Bend or Snub Pulley
belt
SITRANS
WS100
conveyor stringer conveyor
structure for
arrestor strap
arrestor strap

Page 10 SITRANS WS100 Speed Sensor – INSTRUCTION MANUAL 7ML19985LU01
General Installation Steps
1. Drill and tap out pulley shaft to a depth of 25 mm (1”) concentric to its centerline, and
tap M12x1.75. If using magnetic connector, mount to shaft face, and go to step 3.
2. Thread the SITRANS WS100 onto the machine shaft using 16 mm or 5/8" open-ended
wrench and releasable thread-locking adhesive (Loctite or similar).
3. Attach arrestor strap to an existing support member or add a rigid support if
necessary.
4. Encase wiring in flexible conduit to allow unit to move freely (without tension on the
wires).
5. Wire the SITRANS WS100 to the integrator. See Terminal Connections to Siemens
Integrators on page 12 for terminal post connections.
WARNING: Exercise caution when completing step 1, and remain
within specified tolerances.
.254mm (.010") A
A
25 mm
(1")
M12x1.75
lock against shaft

7ML19985LU01 SITRANS WS100 Speed Sensor – INSTRUCTION MANUAL Page 11
Interconnection
Connection between the SITRANS WS100 standard unit and the integrator should be
made with three-wire shielded, 0.324 mm²(22 AWG) cable.
To connect the SITRANS WS100 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.
Ground the shield at the integrator end ONLY.
Connection
WS100 standard
WS100 IS
Wiring
Red – +V DC
The positive power supply from the integrator connection.
White – Speed Out
The positive output connection of the measurement loop.
Note: Installation shall be performed only by qualified personnel and in
accordance with local governing regulations.
Notes:
• Flexible conduit is recommended so that excess stress is not applied to the
shaft bearings.
• Use appropriate conduit and conduit fittings or cable glands to maintain local
approvals.
WS100 standard Integrator
red speed excitation
white speed signal
black speed common
WS100 IS IS Switch Isolator
Terminal Integrator
brown 1
blue 3
7 speed signal
8speed common

Page 12 SITRANS WS100 Speed Sensor – INSTRUCTION MANUAL 7ML19985LU01
Black – 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.
Terminal Connections to Siemens Integrators
Terminal Connections to SIWAREX FTC Integrator
Notes:
• Ground the cable shield at the integrator end only!
• For optimal performance the stainless steel cover of the Speed Sensor must
be connected to a reliable earthed ground.
SITRANS WS100 Red
+V DC
White
Speed
Black
Cmn GND
Milltronics BW100 8 7 6 N/C
Milltronics BW500 19 16 17 N/C
SITRANS WS100 Red
+V DC
White
Speed
Black
Cmn GND
SIWAREX FTC
24 V
(backplane
bus)
X1.9
(CI+)
X1.10
(CI-) N/C
Notes:
• N/C indicates the terminal is not normally connected
• For terminal connections to older model Siemens integrators consult your local
Siemens representative

7ML19985LU01 SITRANS WS100 Speed Sensor – INSTRUCTION MANUAL Page 13
Maintenance
Inspection
Periodically the cover should be removed and the sensor should be cleaned for dust and
grime buildup. If cleaning is required, disconnect the power and use a vacuum cleaner
and a clean, dry paint brush.
Wear on the bearings is detected by excess play or sound. If the bearings exhibit excess
play or produce an unreasonably loud sound, the speed sensor should be returned to
Siemens for repair.

Notes

*7ml19985LU01* Rev. 1.0
www.siemens.com/processautomation
Siemens Milltronics Process Instruments Inc.
1954Technology Drive, P.O. Box 4225
Peterborough, ON, Canada K9J 7B1
Tel: [phone] Fax: [phone]
Email: [email protected]
Siemens Milltronics Process Instruments Inc. 2009
Subject to change without prior notice
Printed in Canada