Siemens Sitrans WM100 User manual

SITRANS
Process protection
SITRANS WM100
Operating Instructions
7MH7158 (SITRANS WM100)
07/2017
A5E45103494
-AA
SITRANS WM100 Motion
Sensing Switch
1
Safety notes
2
Introduction
3
Installing/mounting
4
Connecting
5
Operating
6
Dimension drawings
7
Service and maintenance
8
Technical data
9
Support
A

Siemens AG
Division Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
Document order number: A5E45103494
Ⓟ
01/2019 Subject to change
Copyright © Siemens AG 2017.
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 WM100
Operating Instructions, 07/2017, A5E45103494-AA 3
Table of contents
1 SITRANS WM100 Motion Sensing Switch................................................................................................. 4
1.1 Description ................................................................................................................................4
2 Safety notes............................................................................................................................................... 5
2.1 Precondition for use..................................................................................................................5
3 Introduction................................................................................................................................................ 6
4 Installing/mounting..................................................................................................................................... 7
5 Connecting ................................................................................................................................................ 9
5.1 WM100 Circuit Card..................................................................................................................9
5.2 WM100 Typical Wiring............................................................................................................11
6 Operating................................................................................................................................................. 12
6.1 Typical Performance...............................................................................................................12
6.2 Performance Examples ..........................................................................................................13
7 Dimension drawings ................................................................................................................................ 17
8 Service and maintenance ........................................................................................................................ 18
9 Technical data ......................................................................................................................................... 19
A Support.................................................................................................................................................... 20
A.1 Technical support....................................................................................................................20
Index........................................................................................................................................................ 21

SITRANS WM100
4Operating Instructions, 07/2017, A5E45103494-AA
SITRANS WM100 Motion Sensing Switch
1
1.1
Description
SITRANS WM100 motion sensing switch is a heavy-duty zero speed alarm. It is used to
detect the absence or presence of motion of rotating, reciprocating, or conveying equipment.
The WM100 has a circuit card and a magnetic assembly potted in the probe body. The
WM100 is powered from the line voltage and provides a set of dry relay contacts to indicate
motion when the ferrous targets of the machinery being monitored pass in front of the probe.

SITRANS WM100
Operating Instructions, 07/2017, A5E45103494-AA 5
Safety notes
2
2.1
Precondition for use
This device left the factory in good working condition. In order to maintain this status and to
ensure safe operation of the device, observe these instructions and all the specifications
relevant to safety.
Observe the information and symbols on the device. Do not remove any information or
symbols from the device. Always keep the information and symbols in a completely legible
state.
Safety marking symbols
In manual
On Product
Description
Caution: refer to accompanying documents (manual) for details.
Protective Conductor Terminal

SITRANS WM100
6Operating Instructions, 07/2017, A5E45103494-AA
Introduction
3
This instruction manual covers the installation, operation and maintenance of the SITRANS
WM100. It is essential that this manual be referred to for proper installation and operation of
your unit. Adhering to the installation and operating procedures will ensure a quick, trouble
free installation and allow for the maximum accuracy and reliability of your motion sensing
probe.

SITRANS WM100
Operating Instructions, 07/2017, A5E45103494-AA 7
Installing/mounting
4
WARNING
The probe face is magnetic. Keep it away from magnetosensitive materials such as
computer discs and audio or video tapes.
WARNING
All field wiring must have insulation suitable for at least 250 V and the maximum ambient
temperature of +60°C (+140 °F).
Note
•
The Protective Earth Terminal indicated by ( ) must be connected to reliable ground.
•
All wiring must be done by qualified personnel in accordance with all governing
regulations.
•
The equipment must be protected by a 15 A fuse or circuit breaker in the building
installation.
•
A circuit breaker or switch in the building installation, marked as a disconnect switch, shall
be in close proximity to the equipment and within easy reach of the operator.
•
Relay contact terminals are for use with equipment which has no accessible live parts
and wiring which has insulation suitable for at least 250 V.

Installing/mounting
SITRANS WM100
8Operating Instructions, 07/2017, A5E45103494-AA
Environment
The WM100 must be mounted in an area that is non-hazardous, within the ambient
temperature range and non-corrosive to the materials of construction. Refer to Dimensions
(Page 17) for materials of construction.
①
Up to 100 mm (4") maximum gap
The probe should be mounted using the supplied mounting flange, onto a vibration free
structure. The gap between the probe and the target should be sufficient such that there is
no danger of the target damaging the probe. The maximum allowable gap ranges from 20
mm to over 100 mm from the face of the target to the face of the probe. The range is
dependent on the target type and range of speed expected. See typical performance graphs
(Page 13) for examples.
The WM100 is sensitive to lateral disturbances to its magnetic field. If the WM100 is
responding to motion from an interfering target, move the WM100 or install a ferrous plate
(steel) as a shield between the WM100 and the interfering target.
Where possible, the probe should be mounted so the conduit entry is pointing down to avoid
accumulation of condensation in the casing. Connection of the probe should be made via
flexible conduit for easier removal or adjustment of the probe.
Note
In climates where direct sunlight may cause the SITRANS WM100 temperature to rise above
the specified limit, shade the unit by installing a sun shield.

SITRANS WM100
Operating Instructions, 07/2017, A5E45103494-AA 9
Connecting
5
5.1
WM100 Circuit Card
WARNING
Disconnect power before opening top cover.
Note:
Check nameplate for proper operation voltage (115 V AC or 230 V AC).
①
Ground terminal for customer connection
②
Detection indicator LED
③
Terminal block for customer connection

Connecting
5.1 WM100 Circuit Card
SITRANS WM100
10 Operating Instructions, 07/2017, A5E45103494-AA
WM100 Connection
Note
1.
Dry contacts shown in de-energized (alarm or shelf) state.
2.
WM100 is manufactured for either 115 or 230 V AC operation. Check WM100 nameplate
for applicable voltage. Correct voltage must be supplied. Voltages lower than specified
will result in an inoperative condition. Voltages higher than specified will severely damage
unit.
3.
For 5 second time delay and minimum 12 ppm range, connect jumper across terminals 7
and 8. Without a jumper, the default is 10 second time delay and minimum 6 ppm range.

Connecting
5.2 WM100 Typical Wiring
SITRANS WM100
Operating Instructions, 07/2017, A5E45103494-AA 11
5.2
WM100 Typical Wiring
Should the time delay feature on start up not be required, power should be applied
continuously from a separate source. Typically this would be desirable for automatic
upstream start up of conveying devices after down stream drive has reached its operation
speed.
Note
1.
Interlocks and safety pull switches are not shown.
2.
If ‘START’ is initiated by programmable logic controller, closure time may be of insufficient
duration to allow WM100 contact to latch. In such a case, program a timer contact into
circuit.
3.
CSA requires a 3 A or less fuse to protect contacts. For 240 V AC, protect contacts with a
1500 VA transformer as well.

SITRANS WM100
12 Operating Instructions, 07/2017, A5E45103494-AA
Operating
6
When power is initially applied to the WM100, the alarm relay is energized and held
artificially by the timing circuit. This will simulate the normal operation of the WM100 for a
start up delay of > 10 seconds (or > 5 seconds if a jumper is wired across terminals 7 and 8).
As a ferromagnetic object passes through the probe’s permanent magnet field, the distortion
of the flux is sensed by the magnetic detection circuit. If the distortion is of suitable
magnitude, a short pulse is generated to reset the timing circuit, visible to the user by the
LED shown in the lid window. This action keeps the alarm relay energized providing fail-safe
operation of the contacts.
If no change in flux (target motion) is sensed for a period of 10 seconds (or 5 seconds if a
jumper is wired across terminals 7 and 8), the timing circuit will not be reset. This will cause
the alarm relay to de-energize and the contacts to change state.
Thus the WM100 cannot detect the motion of uniform ferromagnetic masses such as a
rotating pulley or a keyless shaft.
When adjusting the WM100 mounting position, it may take up to 10 seconds for the
detection circuit to adjust to the new ambient magnetic environment. During this adjustment
period, the LED may fail to flash for an otherwise normally detectable moving target.
6.1
Typical Performance
The maximum air gap for which the WM100 will reliably detect the moving ferrous target
varies according to the target's size, shape, orientation and direction of motion, as well as
the material to which the target is attached.
An example shown below compares typical results from steel blocks used as targets on a
wheel (either ferrous or non-ferrous). As shown, a larger detection range can typically be
achieved when there is a ferrous object behind the target. The WM100 provides excellent
detection of a relatively small target, such as a 3/16" (~5 mm) shaft key installed in a 5/8"
(~16 mm) motor shaft with < 0.125" (~3 mm) of the key protruding beyond the shaft
envelope.
To ensure proper operation in any setup, use the LED indicator to confirm consistent
detection of the target over the full range of expected operational speeds. Note that detection
range may vary slightly with voltage supply and temperature, so it is recommended to use
the minimum air gap that is physically safe to implement.

Operating
6.2 Performance Examples
SITRANS WM100
Operating Instructions, 07/2017, A5E45103494-AA 13
6.2
Performance Examples
Wheel Driven Examples

Operating
6.2 Performance Examples
SITRANS WM100
14 Operating Instructions, 07/2017, A5E45103494-AA
Setup A: WM100
with two 1"x2"x2"
steel targets
mounted on steel wheel
①
Steel wheel
②
1"W x 2"H x 2"D steel block
Setup B: WM100
with two 1"x2"x1"
steel targets
mounted on steel wheel
①
Steel Wheel
②1"W x 2"H x 1"D steel block

Operating
6.2 Performance Examples
SITRANS WM100
Operating Instructions, 07/2017, A5E45103494-AA 15
Setup C: WM100
with two 1"x2"x2"
steel targets mounted on
non
-ferrous wheel
①
Non-ferrous wheel
②
1"W x 2"H x 2"D steel block
Setup D: WM100
with two 1"x2"x1"
steel targets mounted on
non
-ferrous wheel
①
Non-ferrous wheel
②1"W x 2"H x 1"D steel block

Operating
6.2 Performance Examples
SITRANS WM100
16 Operating Instructions, 07/2017, A5E45103494-AA
Shaft Driven Example
Figure 6-1 Note: 1 m/s ~ 200 ft/min; 25 mm ~ 1.0"
Setup E: DC motor
with 5/8" drive shaft
and 3/16" square key
①DC motor
②
3/16" sq.key
③
5/8" shaft

SITRANS WM100
Operating Instructions, 07/2017, A5E45103494-AA 17
Dimension drawings
7
①
3/4" NPT conduit entrance
⑩
Locknut (plated)
②
10-32 screw (4 places)
⑪
Mounting flange (see detail A)
③
LED
⑫
2" NPSL probe body (aluminum)
④
Terminal Blocks
⑬
95 mm (3.75") ∅ probe clearance hole
⑤
Circuit Board
⑭
6 mm (0.25") ∅ hole for 1/4-20 bolt or drill and tap on
114 mm (4.5") BCD (4 places)
⑥
Cap (aluminum)
⑮
2" NPSL
⑦
Cap gasket (neoprene)
⑯
133 mm O.D. (5.25")
⑧
Casing (aluminum)
⑰
6 mm (0.25") dia. hole for 1/4-20 bolt on 115 mm (4.5")
BCD (4 places)
⑨
Casing gasket (neoprene)

SITRANS WM100
18 Operating Instructions, 07/2017, A5E45103494-AA
Service and maintenance
8
The WM100 can be cleaned by wiping the enclosure exterior with a damp cloth. No further
maintenance is required for the device.

SITRANS WM100
Operating Instructions, 07/2017, A5E45103494-AA 19
Technical data
9
Power
●115 V AC, 50/60 Hz, 7 VA
or
●230 V AC, 50/60 Hz, 7 VA
●±10% of rated voltage
Output
●1 form C (SPDT) dry relay contacts, rated 5 A at 250 V AC non-inductive, fail-safe
operation
●time delay :
–start up : 10 to 14 seconds (or 5 to 7 seconds with 5 sec/12 PPM jumper installed)
–zero speed : 5 seconds ±1 (minimum speed 10 to 15 ppm)1or 10 seconds ±2
(minimum speed 5 to 7.5 ppm)1
–LED indicates detection of changes in magnetic field (resets zero speed timer)
1 Selected via a common jumper. Refer to Operating (Page 12)
Operating Temperature
●– 40 to +60 °C (– 40 to +140 °F)
Environmental
●location: indoor/outdoor
●altitude: 2000 m (6562 ft.) max.
●ambient temperature: -40 to +60 °C (-40 to +140 °F)
●relative humidity: suitable for outdoor (Type 4 / NEMA 4, Type 4X / NEMA 4X, Type 6 /
NEMA 6, IP67)
●installation category: II
●pollution degree: 4
Dynamic Range
●minimum 6 or 12 pulses per minute1
●maximum 3000 pulses per minute
1Selected via a common jumper. Refer to Operating (Page 12)
Shipping Weight
●2 kg (4.4 lbs)
Approvals
●CSAUS/C, CE, C-TICK

SITRANS WM100
20 Operating Instructions, 07/2017, A5E45103494-AA
Support
A
A.1
Technical support
Technical Support
If this documentation does not provide complete answers to any technical questions you may
have, contact Technical Support at:
●Support request (http://www.siemens.com/automation/support-request)
●More information about our Technical Support is available at
Technical Support (http://www.siemens.com/automation/csi/service)
Internet Service & Support
In addition to our documentation, Siemens provides a comprehensive support solution at:
●Services & Support (http://www.siemens.com/automation/service&support)
Personal contact
If you have additional questions about the device, please contact your Siemens personal
contact at:
●Partner (http://www.automation.siemens.com/partner)
To find the personal contact for your product, go to "All Products and Branches" and select
"Products & Services > Industrial Automation > Process Instrumentation".
Documentation
You can find documentation on various products and systems at:
●Instructions and manuals
(http://www.siemens.com/processinstrumentation/documentation)