SKF CMWA 8800 User manual

SKF Wireless Machine Condition Sensor
CMWA 8800
User Manual Part No. 32315300-EN
Revision A
Service Manual
WARNING! - Read this manual before using this product. Failure to follow the
instructions and safety precautions in this manual can result in serious injury,
damage to the product, or incorrect readings. Keep this manual in a safe location
for future reference.
Copyright 2014 by SKF USA Inc.
All rights reserved.
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Telephone: [phone], Fax: [phone]
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© SKF 2014
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Patents: US 4,768,380 • US 5,633,811 • US 5,679,900 • US 5,845,230 • US 5,852,351 •
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US 6,437,692 • US 6,489,884 • US 6,513,386 • US 6,633,822 • US 6,789,025 • US 6,792,360 •
US 7,103,511 • US 7,697,492 • WO/2003/048714
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Monitoring Products page on SKF.com and select the appropriate product link.
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SKF Wireless Machine Condition Sensor TOC-1
Service Manual
Table of Contents
1 Introduction 1
Scope and Purpose....................................................... 1
Related Documentation................................................ 1
2 The Basics 3
The CMWA 8800 Sensor ............................................. 3
Cautions.................................................................. 3
CMWA 8800 Label ................................................4
CMWA Long Tag....................................................4
Repair Service........................................................4
Issuing Commands to the Sensor...............................5
Activate the Sensor ............................................... 5
Deactivate the Sensor........................................... 5
Manual Commands ............................................... 6
Software Commands ............................................7
The Network .................................................................. 8
WirelessHART Terminology ................................. 8
The WirelessHART Network Joining Process ....9
Network Layers...................................................... 9
The Wireless Sensor Device Manager......................11
The Device Manager License Key......................11
Device Manager Configuration Parameters.....13
3 The P+F Gateway’s Web Page 15
Accessing the Web Page ............................................15
Verifying the P+F Gateway’s Firmware Version......16
Known Issues with the Firmware......................16
Network ID and Join Key Parameters......................17
Preparing a Commissioning Gateway ......................18
Joining the Sensors to the Commissioning
Network.....................................................................21
The Production Network Settings.....................22
P+F Gateway’s Installation Torque ...........................22
Comparing P+F with Emerson Gateways ................23

TOC-2 SKF Wireless Machine Condition Sensor
Service Manual
4 Wireless Sensor Device Manager 25
Device Manager Installation ......................................25
To Install Device Manager..................................26
Known Issue #1 Cannot open database.........27
Known Issue #2 Replace the database...........29
Connecting to the Gateway........................................32
Issue: Gateway Connection Failed....................33
Troubleshooting the Required Ports ................33
Importing Sensors into Device Manager..........35
Viewing the Connected Sensors........................35
Verifying the Sensor Firmware.................................36
Known Issues in Device Manager.............................37
Full Routing vs. Leaf Node.........................................38
Expert Features in Device Manager.........................39
Wireless or Wired Communication ...................39
Calibration ............................................................40
Generic Command Feature................................41
Data Collection Scheduling........................................42
Command 93 Example.......................................46
Command 9 Example .........................................50
Estimating the Time to Capture Waveforms...51
Exporting the Measurement Collection Period.......52
Manual Data Collection ..............................................52
Overall Data .........................................................52
Waveform Data ...................................................53
5 Changing the Network ID and Join Key 55
6 Troubleshooting XML Import to Analyst 57
7 Network Planning and Diagnostics 61
Network Planning .......................................................61
Important Considerations ..................................61
Wireless Communication Stability Considerations.62
Location and Signal Strength............................62
Coexistence with WLAN .....................................64
Network Commissioning............................................66
Network Diagnostics...................................................66
Key Considerations..............................................66
Topology View......................................................67
Network Diagnostic Details................................69
The Network Statistics Report ..........................70
Troubleshooting Network Issues ..............................74
Issue: No Sensors Join ......................................74
Issue: Some Sensors Do Not Join....................74
Issue: One Sensor Does Not Join.....................74

SKF Wireless Machine Condition Sensor TOC-3
Service Manual
Issue: One Sensor Rejoins Over and Over.......75
Issue: The Gateway Becomes
Non-responsive................................................75
8 RF Interference and Solutions 77
RF Interference............................................................77
Sources .................................................................77
Symptoms ............................................................77
Solutions to RF Interference......................................77
Channel Blacklisting ............................................77
9 System Maintenance 79
Adding a New Sensor into Service............................79
Editing a Sensor’s Name ............................................81
Removing a Sensor from Service .............................82
Replacing an Existing Sensor in Service ..................82
Commissioning Network Available....................82
No Commissioning Network...............................82
Relocating an Existing Sensor in Service.................84
Commissioning Network Available....................84
No Commissioning Network...............................84
Upgrading Sensor Firmware .....................................86
Global Firmware Upgrade ..................................86
Individual Sensor Firmware Upgrade...............87
Device Status Indicators.............................................89
Device Status .......................................................89
Extended Device Status......................................90
Standardized Status 0 ........................................90
Standardized Status 3 ........................................91
Sensor Battery Status ........................................91
System Debugging Logs.............................................92
Execution Log.......................................................92
Communication Log ............................................92
10 FAQs 93
Frequently Asked Questions ......................................93
APPENDIX A, CMWA 8800 System Setup
Checklist 95

SKF Wireless Machine Condition Sensor 1
Service Manual
1
Introduction
Scope and Purpose
The intended audience for this manual is Certified Service Technician and Technical
Support personnel who provide detailed technical work to customers, either over the
telephone or in person. It is assumed that these people are already familiar with the
SKF @ptitude Monitoring Suite as well as Microsoft’s Operating Systems for Desktop
(XP, Vista, 7), Server (2008) and Windows Services.
This document is intended to assist Certified Service Technician and Technical Support
personnel in installing, configuring, supporting and troubleshooting the SKF Wireless
Machine Condition Sensor (CMWA 8800) in WirelessHART networks.
The Wireless Sensor Device Manager software application is commonly called “Device
Manager” in this Service Manual. In some directory paths and file names it is referred
to as “WSDM.”
SKF @ptitude Analyst is commonly called “Analyst” in this Service Manual.
PEPPERL+FUCHS is commonly called “P+F” in this Service Manual.
Related Documentation
Document
Part No.
Wireless Sensor Device Manager User Manual
P/N 32286200
SKF Wireless Machine Condition Sensor (CMWA 8800)
System Setup Guide
P/N 32257600
PEPPERL+FUCHS WirelessHART Gateway WHA-GW
User Manual
PEPPERL+FUCHS WirelessHART Adapter WHA-ADP-
*-Z1(EX1) User Manual

SKF Wireless Machine Condition Sensor 3
Service Manual
2
The Basics
In this chapter, we present some general information about the CMWA 8800 sensor,
the WirelessHART network, and the Wireless Sensor Device Manager software.
The CMWA 8800 Sensor
Cautions
•Do not twist the plastic top!Doing so voids the warranty and hazardous area
certification.Do not open the plastic top!
•Mount by tightening the base – never by twisting the plastic top.
•Storage temperature should be less than 30 °C (86 °F).(Note: Some battery life
issues due to crystal build up have come to light under sustained high
temperatures.)
Figure 1.
Correct Method of Mounting/Dismounting a Sensor.
WARNING! To obtain proper torque when using a crowfoot wrench, you must
attach the crowfoot 90 degrees of the torque wrench shaft.

The Basics
The CMWA 8800 Sensor
4 SKF Wireless Machine Condition Sensor
Service Manual
CMWA 8800 Label
The label on the base of each sensor displays the Hardware Version and the MAC
address. The MAC address is assigned by SKF and it serves as a physical identification
and does not change. The first ten characters of the MAC address make up the
manufacturer and product’s unique ID number (00-1B-1E-E1-A2) assigned by the
HART (Highway Addressable Remote Transducer) Communication Foundation; the last
six characters are the unique device ID assigned by SKF. The label also includes the
operating temperature range, model number, bar code, mounting torque, CE
certification number, FCC/IC certification number, icon indicating do not throw away the
sensor as trash, and the warning “Sensor shall not be opened by unauthorized
personnel.”
CMWA Long Tag
SKF @ptitude Analyst (called Analyst in this Service Manual) and the Wireless Sensor
Device Manager software (called Device Manager in this Service Manual) use the asset
name as the Long Tag to identify the sensor. The Long Tag contains 32 characters
under the WirelessHART protocol, but Analyst permits only 20 characters so the Long
Tag is truncated. If the truncated tag has a duplicate in the Analyst database, Analyst
appends the names of the subsequent POINTs with .1, .2, and so on. The Long Tag
identifier can be changed in Device Manager.
Repair Service
All repair service must be done at a certified repair center – currently San Diego is the
only center. The sensor will be inspected to determine whether the plastic top was
twisted or opened in the field, which would void the warranty.
The expected type of service is battery replacement. The sensor has no repairable
parts. If the printed circuit board (PCB) is not in working condition, it can be replaced at
the customer’s request. The MAC address of the new PCB will be modified to match
that of the original sensor. The serviced sensor will be fitted with new top, label, and O-
ring.

The Basics
Issuing Commands to the Sensor
SKF Wireless Machine Condition Sensor 5
Service Manual
Issuing Commands to the Sensor
Figure 2.
Wireless Sensor LED and Push Button.
You activate and issue manual commands to the wireless sensor by pressing and
holding its push button for various durations - as you count a number of LED blinks.
Releasing the push button after a specific number of blinks will issue a specific
command to the sensor.
Activate the Sensor
Firmly press and then quickly release the sensor’s push button. The sensor’s green LED
immediately blinks once, pauses, then blinks in an accelerating manner, pauses, and
then blinks a short burst to indicate the sensor is active.
Deactivate the Sensor
Firmly press the sensor’s push button and count four blinks, then release. The sensor’s
green LED blinks in a decelerating manner, and then stops. The sensor is deactivated.
(Counting five or six blinks will also deactivate the sensor.)
LED
Push button

The Basics
Issuing Commands to the Sensor
6 SKF Wireless Machine Condition Sensor
Service Manual
Manual Commands
Once the sensor has been activated, you may issue manual commands to the sensor by
pressing and holding its push button down for a specific number of blinks. Reference
the following table:
Press and
hold for:
To issue this command … … and elicit this LED
response
1 blink Not used after sensor is activated None (verifies the sensor is
active)
2 blinks (Not implemented at this time)
Communicate with the gateway for
identification purposes
None
3 blinks Reset (reboot) the sensor for
troubleshooting purposes
(wait five seconds after resetting the sensor
before issuing new commands to the
sensor)
Short burst
4 blinks Deactivate the sensor Blinks in a decelerating
manner, then stops
5 blinks Deactivate the sensor Blinks in a decelerating
manner, then stops
6 blinks Deactivate the sensor Blinks in a decelerating
manner, then stops
7 blinks Set Network ID to 101, and reset sensor Short burst
8 blinks Set Network ID to 102, and reset sensor Short burst
9 blinks Set Network ID to 1229 (default setting)
and set Join Key to 44555354 4E455457
4F524B53 524F434B and reset sensor
Short burst
The actions below are for Technical Service Group (TSG) use only in the Extended
Operations Menu.
15 blinks Access the Extended Operations Menu
(for TSG only).
Confirm by 3 rapid blinks
after releasing the button.
3 blinks Reset device back to normal operation. Burst of quick blinks.
4 blinks Set update period to 5 minutes (for testing
only; not for production). Note that this will
shorten the battery life if the sensor is left
in this mode.
A few rapid blinks. Returns
to the regular menu.
5 blinks Reset to factory defaults configuration.
Sensor resets to normal operation.
A few rapid blinks, then a
burst; pause. Returns to the
regular menu.
6 blinks Reset of calibration data to factory default.
Sensor resets to normal operation.
A few rapid blinks, then a
burst; pause. Returns to the
regular menu.
7 blinks Radio Test Menu (for testing only; not for
production).

The Basics
Issuing Commands to the Sensor
SKF Wireless Machine Condition Sensor 7
Service Manual
Software Commands
After the Device Manager software is installed and operational, you can issue some
standard procedure commands to the sensors with it. Select a sensor item in the
hierarchy, and then go to the Device tab.
Figure 3.
Sensor / Device Tab, Commands to Sensors.
Flash LED – Click this button to cause the connected wireless sensor’s LED to flash ten
times. This can be useful if you need to identify a device in the network or check
communication.
Reset Device – Click this button to reset the sensor. If the sensor is connected to the
Device Manager software, resetting the sensor is similar to rebooting a computer; it
helps to clear issues with the device. Note that the sensor will drop off the network, and
then rejoin the network, which takes some time - more time the larger the network.
Reset Pipe – If the network manager fails to reassign the Fast pipe function, you can
click this button to de-allocate the fast pipe from this sensor so the gateway can
reassign the resource to other sensors as needed. However, the preferred method is to
set the fast pipe on the P+F gateway’s Operating Modes web page.
IMPORTANT: You can verify a sensor’s fast pipe assignment on the P+F gateway’s
Operating Modes web page. A failure of fast pipe assignment is indicated when a
sensor directly connected to the gateway takes more than two minutes to complete
collecting a waveform.
IMPORTANT: Also on the Sensor / Device tab, entering the Machine Speed for
the sensor is recommended. The value is exported to Analyst for the FAM overlay and it
does not have to be entered in each FFT plot in Analyst.

The Basics
The Network
8 SKF Wireless Machine Condition Sensor
Service Manual
The Network
WirelessHART Terminology
HART7 (spec155) added the Wireless command set, including network security terms
such as Network ID and 32 character Join Key, and advertisement. HART7 is backward
compatible. Some terms commonly used with WirelessHART networks are defined
below.
Term Definition
Advertisement Messages sent by the network manager to announce the network’s
existence.
Block transfer
Generally, HART communications are connectionless transactions.
Block transfer extends the protocol to support connection oriented
reliable stream service for large data blocks. Used for sending
waveforms and firmware upgrades.
Burst mode
The sensor publishes data for any of the HART commands at a
regular interval. Contrary to polling, no query is made so burst
mode is more efficient.
Caching
Burst data for a query are saved in gateway memory. When
queried by the host software, the gateway will return the cache
data instead of polling the data from the sensor.
Fast pipe
This is a single device mode which establishes a direct connection
to a selected device. It has four times the transfer rate of a regular
connection. The network manager in the gateway grants fast pipe
mode only to devices which identify themselves as high power
profile devices.
This can be selected manually in the gateway’s Operating Modes
web page or automatically by the network manager during block
transfer for waveform upload or firmware download. See the
section Full Routing vs. Leaf Node, Power profile.
Network manager Responsible for the coordination of communication between the
devices and the gateway and between devices.
Leaf node device A device that does not participate in the mesh network. It does not
“help its neighbor.”
Link
The full communication specification between adjacent nodes in
the network; the communication parameters necessary to move a
packet one hop.
Long tag HART7 32-character logical name for the HART device.
P1 profile
256 slot superframe, 2.56 sec cycle; normal battery life, normal
join process, better user interface response.
P1 can be selected during your interaction with the P+F web page
to speed response time. Then, when you are finished, P2 can be
selected for normal network operation to conserve battery life.

The Basics
The Network
SKF Wireless Machine Condition Sensor 9
Service Manual
Term Definition
P2 profile
2048 slot superframe, 20.48 sec cycle; better battery life, poor
user interface response and slower join process.
P2 is eight times slower than P1; the network assigns the same
number of slots but eight times farther apart.
Power profile High or low power device. See the section Full Routing vs. Leaf
Node, Power profile.
Routing device A device that participates in the mesh network, meaning it “helps
its neighbor” when the neighbor does not have direct access.
Short tag Pre-HART7 8-character logical name for the HART device.
Slot A fixed time interval that may be used for communication between
neighbors.
Security manager Responsible for the joining process of the device and assigning the
session key to encrypt and decrypt packets.
Superframe A collection of slots repeating at a constant rate. Each slot may
have several links associated with it.
KNOWN ISSUE: P2 profile is not working in the P+F gateway. However, it may work in
gateways from other manufacturers.
The WirelessHART Network Joining Process
This is a simplified sequence of how the sensors join the network.
•The active gateway sends network advertisement signals. These are messages
sent by the network manager to announce the network’s existence. The network
manager and security manager are contained in the gateway.
•The sensors respond with a Join Request, which consists of the Network ID and
Join Key. The security manager authenticates the Network ID and Join Key and
then allows the sensor to join the network.
•The security manager sends session keys to the sensors and routing and
scheduling information.
•The sensors begin normal operation, which is publishing data (the four main
variables and device status, as described below).
Network Layers
Physical Layer
•IEEE 802.15.4
•ISM band 2.40 – 2.48 GHz
•16 x 5 MHz non-overlapping channels in 80 MHz bandwidth

The Basics
The Network
10 SKF Wireless Machine Condition Sensor
Service Manual
DataLink Layer
Time Synchronized Mesh Network - Time Division Multiple Access (TDMA)
•There are 250 slots within one superframe.
•Each slot is 10 ms. Therefore, the superframe repeats every 2.5 sec.
–133 bytes packet at 250 kbit/s; it takes ~4 ms for an average packet to
complete within the 10 ms
•16 channel * 100 slots/sec/channel = 1600 slots per sec
–Frequency hopping - Avoid interference and provide reliable communication by
using a different frequency channel in each allocated slot.
WirelessHART networks are extremely reliable in delivering packets of data. The grid
below illustrates how TDMA works. Multiple slots may be allocated to a device within a
superframe depending on the communication demand. Multiple devices can
communicate at the same slot by using different frequencies; for example, sensor 1 and
sensor 2 communicate at the same time by using different frequencies.
Figure 4.
TDMA Slots and Channels Illustrated.
Application Layer
•Universal (spec127) – Standard commands must be implemented by all HART
devices. For example, they support four main variables – PV (Primary), SV
(Secondary), TV (Tertiary), QV (Quaternary) – and other device variables, such as
tag names, descriptor, date, final assembly number (FAN), device status.With
CMWA 8800, the PV is velocity overall RMS, SV is enveloped acceleration overall
Pk-to-Pk and TV is temperature. QV is not used.
•Common (spec151) – Standard commands applicable to many devices, such as
squawk for sensor identification, burst control for data publishing, and block
transfer.
•Device Specific – Vender specific commands. For example, cyclic update interval,
sample.

The Basics
The Wireless Sensor Device Manager
SKF Wireless Machine Condition Sensor 11
Service Manual
The Wireless Sensor Device Manager
Device Manager provides the user interface that enables you to set up, commission,
operate and maintain the sensor system. It allows you to change the gateway settings
and also propagates the settings to all sensors in the network (note: this cannot be done
from the gateway’s web page). After the sensors are set up, and their data collection
schedules are configured and stored in the Device Manager database, you will start the
batch service. The Device Manager batch service runs in the background using the
stored data collection schedules to collect measurements and save them to the
database. Both the UI and batch service are installed from a single installation
application.
WARNING! The minimum monitor resolution for Device Manager is 1600 x
900. Device Manager does not permit scrolling and some vital functions will be
unavailable at lower resolution.
Device Manager exports the collected data to the Analyst database. The diagram below
shows the data flow from the CMWA 8800 all the way through to Analyst and other
applications.
Figure 5.
Data Flow Export to Analyst.
The Device Manager License Key
Device Manager is shipped with a temporary license key that has a fixed expiration date.
The temporary license key and expiration date can be found on the “hot sheet” inside of
the Device Manager’s CD case. This temporary license is good for up to 50 sensors
only. When Device Manager is installed and a plant hierarchy item has been created
(prior to the expiration date), then the permanent license key should be requested from
SKF Customer Support Group (CSG) through the License Management dialog in Device
Manager.

The Basics
The Wireless Sensor Device Manager
12 SKF Wireless Machine Condition Sensor
Service Manual
Important points to note include:
•The license key is good for any number of installations on the same computer.
•The license key is good for future software upgrades.
•The customer must re-apply for the license key from CSG if the software is moved
to a different computer.
To obtain the license key, follow these steps:
After the first plant is created, go
to Help > License Management.
The License Management
dialog opens.
Enter the temporary license key
from the “hot sheet” to the
License Key field.
Click Save.
The Expiration date is then
displayed. Up to 50 sensors are
supported in the Current
column.
In the Wanted column, select
the number of the sensors that
the purchased license supports
(500 in this example).
With the License Application
Code now displayed, click the
Copy to clipboard button to
copy the code to your clipboard.
Paste the code in an email and
then send it to CSG.
CSG will return an email with
the new license key to the
customer within 24 hours.
Copy the license key from the
email from CSG to the clipboard.

The Basics
The Wireless Sensor Device Manager
SKF Wireless Machine Condition Sensor 13
Service Manual
From the License Key field, click
the Paste from clipboard
button and then click Save.
The Current column will show
the number of sensors that the
license key supports and the
Expiration date box will
disappear.
Device Manager Configuration Parameters
Device Manager configuration parameters are stored in the Settings.config file on the
drive on which the software is installed:
•For Windows XP, the default path is \Program Files\SKF-RS\Wireless Sensor
Device Manager - 8800\Settings.config in the root drive.
•For Windows 7, the default path is \Program Files(x86)\SKF-RS\Wireless Sensor
Device Manager – 8800\Settings.config in the root drive.
Settings.config - Stores the following information:
Information Default Setting
Enables and disables expert
features in the GUI
<add key="LocalTest" value="False"/>
Ports used <add key="GatewayPort" value="20004"/>
Port range <add key="PortRangeStartPort" value="7000"/>
Enable/Disable communication
logging
<add key="HartCommMode" value="True"/>
Device Manager software program
execution logging depth
<add key="DebugMode" value="False"/>
<add key="InfoMode" value="True"/>
<add key="DbInfoMode" value="False"/>
<add key="UdpInfoMode" value="False"/>
<add key="BatchInfoMode" value="False"/>
<add key="QueueInfoMode" value="False"/>
<add key="LearnInfoMode" value="False"/>
<add key="BlockDataInfoMode" value="False"/>
<add key="CommandInfoMode" value="False"/>
XML prefix <add key="SKFXMLExportPrefix" value="WSDM"/>
SKF export folder name <add key="SKFExportFolder"
value="C:\WSDM_Export\"/>

The Basics
The Wireless Sensor Device Manager
14 SKF Wireless Machine Condition Sensor
Service Manual
Information Default Setting
Time Synch enable/disable <add key="PerformGatewayTimesynch"
value="False"/>
Timing configuration
Note: Optimized – do not change
<add key="CmdSendingDelay" value="500"/>
<add key="CmdResponseRetryCount" value="200"/>
<add key="GWResponseTimeout" value="2000"/>
<add key="KeepAlivePeriod" value="60000"/>
<add key="GatewayReconnectDelayMilliseconds"
value="60000"/>
Figure 6.
Example of a Settings.config File.