Rockwell Automation 1440-PK02-05M2 User Manual
User Manual
XM-720 Machine Monitor
Catalog Numbers
1440-PK02-05M0, 1440-PK02-05M1, 1440-PK02-05M2
Important User Information
Solid-state equipment has operational characteristics differing from those of electromechanical equipment. Safety
Guidelines for the Application, Installation and Maintenance of Solid State Controls (publication SGI-1.1
your local Rockwell Automation sales office or online at http://www.rockwellautomation.com/literature/
important differences between solid-state equipment and hard-wired electromechanical devices. Because of this difference,
and also because of the wide variety of uses for solid-state equipment, all persons responsible for applying this equipment
must satisfy themselves that each intended application of this equipment is acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from
the use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and
requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or
liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or
software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation,
Inc., is prohibited.
Throughout this manual, when necessary, we use notes to make you aware of safety considerations.
WARNING: Identifies information about practices or circumstances that can cause an explosion in a hazardous
environment, which may lead to personal injury or death, property damage, or economic loss.
available from
) describes some
ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death,
property damage, or economic loss. Attentions help you identify a hazard, avoid a hazard, and recognize the
consequence
SHOCK HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that
dangerous voltage may be present.
BURN HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that
surfaces may reach dangerous temperatures.
IMPORTANT
Allen-Bradley, Rockwell Software, Rockwell Automation, XM, and TechConnect are trademarks of Rockwell Automation, Inc.
DeviceNet is a trademark of the Open DeviceNet Vendor Association (ODVA).
Microsoft and Windows are registered trademarks of the Microsoft Corporation.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
Identifies information that is critical for successful application and understanding of the product.
Introduction
Installing the XM-720 Machine
Monitor
Table of Contents
Chapter 1
Introducing the XM-720 Machine Monitor . . . . . . . . . . . . . . . . . . . . . . 5
System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Using this Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Document Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Chapter 2
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Selecting a Location for the XM-720 Monitor. . . . . . . . . . . . . . . . 10
Hazardous Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Mounting the XM-720 Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Mounting Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Cutout Dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Mounting the XM-720 Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Connecting Wiring for Your Monitor. . . . . . . . . . . . . . . . . . . . . . . . . . 13
Terminal Block Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Connecting the Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Connecting the Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Connecting the Remote Relay Reset Signal . . . . . . . . . . . . . . . . . . 19
Connecting the Transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Connecting the Tachometer Signal. . . . . . . . . . . . . . . . . . . . . . . . . 28
Connecting the 4-20mA Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Connecting the Setpoint Multiplication Switch . . . . . . . . . . . . . . . 30
Front Panel Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Bargraph Meters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
BNC Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Reset Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Removing the XM-720 Terminal Blocks . . . . . . . . . . . . . . . . . . . . . . . 35
Inserting the XM-720 Terminal Blocks . . . . . . . . . . . . . . . . . . . . . 36
Chapter 3
Configuring the XM-720
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Installing XM Serial Configuration Utility . . . . . . . . . . . . . . . . . . . . . . 37
Downloading a Pre-Configured Configuration File . . . . . . . . . . . . . . . 39
Files to Use With Your XM-720 Monitor . . . . . . . . . . . . . . . . . . . 39
Download the Configuration File to the XM-120/121/122 . . . . . 41
Editing the XM-720 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Transducer Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
gSE Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Alarm Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Relay Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
4-20mA Output Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Tachometer Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Table of Contents 4
Specifications
Comparing Connections Between
the 5802 and the XM-720
Appendix A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Appendix B
Power Supply & Relay Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Signal Conditioner Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Glossary
Index
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Publication GMSI10-UM001C-EN-E - June 2011
Chapter
1
Introduction
This chapter provides an overview of the XM-720 Machine Monitor. It also
discusses the components of the monitor.
For information about See page
Introducing the XM-720 Machine Monitor 5
System Description 6
Using this Manual 7
The XM-720 Machine Monitor is referred to as XM-720 or monitor
throughout this manual.
Introducing the XM-720 Machine Monitor
Catalog Number Measures Includes the following XM Modules
1440-PK02-05M0 Standard dynamic vibration XM-120 Dynamic Measurement Module
1440-PK02-05M1 Low frequency dynamic vibration XM-121 Low Frequency Dynamic Measurement Module
1440-PK02-05M2 gSE™ vibration XM-122 gSE Vibration Module
The XM-720 monitor is a 2-channel machine monitor designed for monitoring
the condition of fans, pumps, motors, turbines, gear drives, and other
machines. The XM-720 is designed to be used with accelerometers, velocity
and non-contact sensors. It samples inputs, compares them to threshold
values, performs self-test routines, and provides outputs to bargraph displays,
relays, and LED indicator lights.
There are three variations of the XM-720 Machine Monitor:
Table 1.1 XM-720 Machine Monitor
XM-441 Expansion Relay Module
XM-441 Expansion Relay Module
XM-441 Expansion Relay Module
5 Publication GMSI10-UM001C-EN-E - June 2011
6 Introduction
Figure 1.1 XM-720 Front and Side View
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3435 3637 3839 4041 4243 4445 4647 4849 5051
1112 1314 15
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3435 3637 3839 4041 4243 4445 4647 4849 5051
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XM-120/121/122 module XM-441 module
1112 1314 15
Each monitor offers:
100
100
75
50
25
0
%
Reset
75
Trip
50
Warning
25
Module
0
Fault
%
Xdcr
Fault
Tacho
CH 2CH 1
System Description
• two vibration transducer connections (eddy current probes,
accelerometers, velocity sensors, AC voltage output or DC voltage
output measurement devices)
• one tachometer input signal connection
• remote relay reset connection
• three relays available for module or transducer fault, warning and trip
• isolated 4-20mA per channel into a maximum load of 250 ohm
• three buffered output signals on the front panel BNC connectors
• two front panel digital meters
• four front panel LED indicators (module, transducer, warning, and trip
status)
The concept of machine monitoring is quite simple. During normal operation,
the machine’s "vital signs" remain within relatively narrow ranges. If a
mechanical problem develops, it will be reflected as a change in one or more of
these vital signs. This change will be detected by the XM-720 and cause an
alarm.
The monitoring system consists of a number of transducers connected to the
XM-720. The transducers installed on the machine convert the "vital signs" to
electrical signals that are transmitted to the XM-720 monitor.
Publication GMSI10-UM001C-EN-E - June 2011
The XM-720 accepts the signals from the transducers, processes and measures
the signals, and closes electrical relay contacts if one of the signals increases
too much. The relays can be connected to annunciators or to automatic
machine controls.
Introduction 7
Using this Manual
This manual introduces you to the XM-720 Machine Monitor. It is intended
for anyone who installs, configures, or uses the XM-720 monitor.
Document Conventions
There are several document conventions used in this manual, including the
following:
The XM-720 Machine Monitor is referred to as XM-720 or monitor
throughout this manual.
TIP
EXAMPLE
A tip indicates additional information which may be
helpful.
This convention presents an example.
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8 Introduction
Publication GMSI10-UM001C-EN-E - June 2011
Chapter
Installing the XM-720 Machine Monitor
This chapter discusses how to install and wire the XM-720 monitor. It also
describes the front panel of the monitor.
For information about See page
Package Contents 10
Installation Guidelines 10
Mounting the XM-720 Monitor 11
Connecting Wiring for Your Monitor 13
Front Panel Description 31
Removing the XM-720 Terminal Blocks 35
2
ATTENTION
Environment and Enclosure
This equipment is intended for use in a Pollution Degree 2
Industrial environment, in overvoltage Category II applications
(as defined in IEC publication 60664–1), at altitudes up to 2000
meters without derating.
This equipment is supplied as “open type” equipment. It must be
mounted within an enclosure that is suitably designed for those
specific environmental conditions that will be present, and
appropriately designed to prevent personal injury resulting from
accessibility to live parts. The interior of the enclosure must be
accessible only by the use of a tool. Subsequent sections of this
publication may contain additional information regarding specific
enclosure type ratings that are required to comply with certain
product safety certifications.
See NEMA Standards publication 250 and IEC publication
60529, as applicable, for explanations of the degrees of
protection provided by different types of enclosures.
9 Publication GMSI10-UM001C-EN-E - June 2011
10 Installing the XM-720 Machine Monitor
Package Contents
The XM-720 monitor is shipped with the following items:
• Monitor
Table 2.1 XM-720 Monitor
Cat. No. XM Measurement Module
1440-PK02-05M0 XM-120 Standard Dynamic Vibration Module
1440-PK02-05M1 XM-121 Low Frequency Dynamic Vibration Module
1440-PK02-05M2 XM-122 gSE™ Vibration Module
• USB-style RS-232 serial cable
• XM Documentation and Configuration Utility CD-ROM disk, which
contains the manuals, XM Serial Configuration Utility software,
Hazardous Locations installation drawings, and XM-720 configuration
files.
• Meter caption sheet
• Mounting template sheet
Installation Guidelines
Selecting a Location for the XM-720 Monitor
IMPORTANT
The XM-720 monitor is designed for panel mounting in a control room or
local mounting in an enclosure for ready access to the front panel by operating
personnel. When selecting a location for the monitor, keep in mind that it is a
complex electronic device. It is designed and manufactured to withstand quite
severe environmental conditions, but as with any electronic equipment, it will
give the longest, trouble-free service if treated with care.
The selected location should not subject the monitor to dripping water from
above, or to heat from equipment installed beneath it.
This product is an open type component and shall be
installed in a suitable grounded enclosure accepted by local
authority having jurisdiction.
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Installing the XM-720 Machine Monitor 11
Hazardous Locations
Due to the proximity of some control rooms to process machinery, the control
room interior may be designated as a hazardous area within the definition of
Article 500 of the (U.S.) National Electrical Code, or similar codes in other
countries.
If the control room is classified as a Division 2 area (N.E.C.), present
interpretation of the code usually permits the operation of electrical equipment
if two conditions are met during normal operation:
1. Arcing or sparking contacts must not be exposed, and
2. No surface temperature may exceed 80% of the ignition temperature (in
°C) of the hazardous gas or vapor.
The XM-720 monitor meets the first requirement since all relay contacts are
hermetically sealed. The second requirement is met if ignition temperature of
the hazardous gas or vapor is above 200°C (392°F).
Mounting the XM-720 Monitor
ATTENTION
See the XM Documentation and Configuration Utility CD
for Hazardous Locations installation drawings. The XM
Documentation and Configuration Utility CD is packaged
with the XM-720.
Wiring
Use solid or stranded wire. All wiring should meet the following specifications:
• 12 to 28 AWG (0.08 to 2.5 mm
• Recommended strip length 8 to 9 millimeters (0.33 inches)
The XM-720 monitor is designed for installation in a wall, panel cutout, or
custom enclosure.
2
)
Mounting Dimensions
Figure 2.1 shows the dimensions of the XM-720 monitor, as well as the
reduced scale cutout. Use this to make sure you have adequate space to install
your monitor. All measurements are in inches [mm].
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12 Installing the XM-720 Machine Monitor
Figure 2.1 Mounting Dimensions and Side View
1/4" MOUNTING
SCREWS 4 PLACES
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34353637 383940 414243 444546 474849 5051
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KNOCKOUTS FOR 3/4"
CONDUIT FITTINGS
LOCATED IN TOP OF CASE.
11121314 15
Cutout Dimension
Use the full size template shipped with the XM-720 monitor to mark the
cutout dimensions. The figure below shows a reduced scale cutout.
Figure 2.2 Cutout Dimensions
PANEL
CUTOUT
4.650 [118.11mm]
FRONT PANEL
7.25
[184.15mm]
7.75
[196.85mm]
Ø.26
4 PLACES
Publication GMSI10-UM001C-EN-E - June 2011
Mounting the XM-720 Monitor
Installing the XM-720 Machine Monitor 13
ATTENTION
• Disconnect all electrical power from the panel before
making cutout.
• Make sure area around the panel cutout is clear.
• Take precautions so that metal cuttings do not enter any
components already installed in panel
• Failure to follow this warning may result in personal
injury or damage to the panel components.
Mount the monitor to the panel using four 1/4 inch mounting screws (not
included in shipment).
IMPORTANT
If you are installing the XM-720 monitor in an existing
cutout, skip to step 2.
1. Cut an opening in the panel and drill four holes for the mounting screws
using the cutout template provided with the XM-720 monitor. Remove
sharp edges or burrs.
2. Slide the XM-720 monitor through the opening.
Connecting Wiring for Your Monitor
Terminal Block (TB) 1
Terminal Block (TB) 2
3. Install and alternately tighten the mounting screws until the monitor is
held firmly against the panel.
Wiring to the monitor is made through the two-single row, removable terminal
blocks located on the back panel of the XM-720 monitor. See Figure 2.3
Figure 2.3 XM-720 Back Panel
9
78654NLE
25 32313027 28 292621 23 242220191817
16151411 131210
Removable Terminal
Blocks (RTB)
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14 Installing the XM-720 Machine Monitor
The XM-720 terminal blocks have spring clamp connectors. Follow these
steps to connect wiring to the back panel connectors.
IMPORTANT
The XM-720 terminal plugs are keyed so they will only fit
into the corresponding socket. Be certain that you are
connecting the wires to the correct connectors.
1. Insert a 1/8" [3.5 mm] wide blade-type screwdriver into the slot above
the selected wiring port.
2. Insert the wire into the open terminal while holding the screwdriver up.
3. Remove the drive blade to secure the wire.
Terminal Block Assignments
The terminal block assignments and descriptions for the XM-720 monitor are
shown in Table 2.2.
WARNING
EXPLOSION HAZARD
Do not disconnect equipment unless power has been
removed or the area is known to be nonhazardous.
Do not disconnect connections to this equipment unless
power has been removed or the area is known to be
nonhazardous. Secure any external connections that mate
to this equipment by using screws, sliding latches, threaded
connectors, or other means provided with this product.
Publication GMSI10-UM001C-EN-E - June 2011
Terminal
Block
TB1
(top)
Installing the XM-720 Machine Monitor 15
Table 2.2 Terminal Block Assignments
No. Name Description
E AC Earth Ground AC equipment earth ground
L AC Input Line AC power (hot)
N AC Input Neutral AC common (neutral)
4
Fault Relay NC
1
Normally Closed contact for Module/Transducer Fault relay
5 Fault Relay Common Common for Module/Transducer Fault relay
6
7
Fault Relay NO
Warning Relay NO
1
2
Normally Open contact for Module/Transducer Fault relay
Normally Open contact for Warning relay
8 Warning Relay Common Common for Warning relay
9
10
Warning Relay NC
Trip Relay NO
2
2
Normally Closed contact for Warning relay
Normally Open contact for Trip relay
11 Trip Relay Common Common for Trip relay
12
Trip Relay NC
2
Normally Closed contact for Trip relay
13 Reset Relay Switch Switch input to reset internal relays
TB2
(bottom)
14 Switch RTN Switch return for Reset Relay and Setpoint Multiplier switch
15 Setpoint Multiplier Switch Switch input to activate Setpoint Multiplication (active open)
16 24V Common Tachometer 24V power return
17 Xducer 1 (+) Vibration transducer channel 1 connection
18 Xducer 1 (-) Vibration transducer channel 1 connection
19 Chassis GND Connection to chassis ground (channel 1 shield)
20 Xducer 2 (+) Vibration transducer channel 2 connection
21 Xducer 2 (-) Vibration transducer channel 2 connection
22 Chassis GND Connection to chassis ground (channel 2 shield)
23 Xducer +24V Transducer power, positive side; used to power external sensor
24 Xducer -24V Transducer power, negative side; used to power external sensor
25
26
4-20mA 1 (+)
4-20mA 1 (-)
3
3
4-20mA output; channel 1
250 ohm maximum load
27 Chassis GND Connection to chassis ground (4-20mA outputs shield)
28
29
4-20mA 2 (+)
4-20mA 2 (-)
3
3
4-20mA output; channel 2
250 ohm maximum load
30 Tachometer In (+) Tachometer transducer/signal input, positive side
31 Tachometer In (-) Tachometer transducer/signal input, negative side
32 Chassis GND Connection to chassis ground (tachometer shield)
1 It is assumed that the relay is to be configured as failsafe.
2. It is assumed that the relay is to be configure as non-failsafe.
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16 Installing the XM-720 Machine Monitor
3 4-20mA operation requires a jumper at terminals 25 & 26 (or terminals 28 & 29) if 4-20mA output is not used.
Otherwise the associated meter on front panel will not function properly. Refer to Connecting the 4-20mA
Outputs on page 29 for more information.
Connecting the Power Supply
The XM-720 monitor accepts inputs from 100-240V ac (47 to 63 Hz). The
internal power supply has internal (not accessible) input fuse. No other
protection is required. In order to meet local requirements, please consult local
codes and regulations for proper installation. Maximum rating of an
overcurrent protective device shall not exceed 15A.
Wire the AC power connections to the back panel as shown in Figure 2.4.
Figure 2.4 Power Supply Connection
Publication GMSI10-UM001C-EN-E - June 2011
Connecting the Relays
The XM-720 monitor has both Normally Open (NO) and Normally Closed
(NC) relay contacts. Normally Open relay contacts close when the control
output is energized. Normally Closed relay contacts open when the control
output is energized.
The alarms associated with the relay and whether the relay is normally
de-energized (non-failsafe) or normally energized (failsafe) depends on the
configuration of the monitor.
Installing the XM-720 Machine Monitor 17
The XM-720 back panel terminal block is equipped with three single-pole,
double-throw relays. Figures 2.5 to 2.7 show the connection for the three
relays.
Module/Transducer Fault Relay
In the provided configuration files, the Fault relay is configured to be a failsafe
relay and is set up to activate if any one of the conditions occurs:
• There is a hardware or firmware failure.
• A transducer fault is detected on the associated transducer.
You can change the alarms associated with this relay as well as the behavior of
the relay using the XM Serial Configuration Utility. Refer to Editing the
XM-720 Parameters on page 44 for more information.
Figure 2.5 shows the on-board relay connection for the Fault relay.
Figure 2.5 Wiring Connection for Fault Relay (Failsafe)
Shown with power on
and no fault
Warning Relay
In the provided configuration files, the Warning relay is configured to activate
when the overall measurement in either channel exceeds the alert threshold
levels (same conditions that activate the Warning LED). This relay is
configured as a non-failsafe relay. Figure 2.6 shows the on-board relay
connection for the Warning relay.
The alert threshold levels and the behavior of the relay can be changed using
the XM Serial Configuration Utility. Refer to Editing the XM-720 Parameters
on page 44.
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18 Installing the XM-720 Machine Monitor
Figure 2.6 Wiring Connection for Warning Relay (Non-failsafe)
Trip Relay
In the provided configuration files, the Trip relay is configured to activate
when the overall measurement in either channel exceeds the danger threshold
level (same conditions that activate the Trip LED). This relay is also
configured as a non-failsafe relay. Figure 2.7 shows the on-board relay
connection for the Trip relay.
The danger threshold level and the behavior of the relay can be changed using
the XM Serial Configuration Utility. Refer to Editing the XM-720 Parameters
on page 44.
Figure 2.7 Wiring Connection for Trip Relay (Non-failsafe)
Publication GMSI10-UM001C-EN-E - June 2011
Installing the XM-720 Machine Monitor 19
Connecting the Remote Relay Reset Signal
In the provided configuration files, the XM-720 relays are configured to be
latching relays. This means the relays stay activated even when the condition
that caused the alarm has ended. The remote relay reset signal enables you to
reset the XM-720 relays remotely after you have corrected the alarm condition.
Wire the Remote Relay Reset Signal to the XM-720 back panel as shown in
Figure 2.8.
Figure 2.8 Remote Relay Reset Signal Connection
ATTENTION
The switch input power supply must be grounded at a
single point. Connect the Switch Return signal to chassis or
earth ground at either the XM-720 system, the switch, or
other equipment that is wired to this switch. If grounding
at the XM-720 system, connect a jumper between the
Switch RTN terminal and any available Chassis GND
terminal.
Connecting the Transducers
The XM-720 monitor can accept input from any Entek non-contact eddy
current probe, a standard IEPE acclerometer, velocity transducer, AC voltage
output or a DC voltage output measurement device.
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20 Installing the XM-720 Machine Monitor
The sensitivity, operating range, and power requirements have been predefined
in the provided configuration files. The characteristics of the transducer and
the signal processing performed on the input signals can be changed using the
XM Serial Configuration Utility. Refer to Transducer Parameters on page 44.
IMPORTANT
The 1440-PK02-05M2 (gSE) monitor can measure both
"standard" vibration, similarly to the 1440-PK02-05M0,
and g’s Spike Energy™ (gSE). It can produce the gSE
measurement only with an IEPE accelerometer or
externally powered sensor.
Setting the Buffer Range for the Transducer
The XM-720 provides buffered outputs of all transducer input signals through
the BNC connectors on the front panel.
The voltage operating range of the buffered outputs must be configured to
coincide with the corresponding transducer bias range. This operating range is
configured by placing a jumper from terminal 5 (channel 1) and terminal 22
(channel 2) to terminal 6 (Positive Buffer Bias) or terminal 21 (Buffer -) on the
XM-120/121/122 module, depending on the transducer. The buffered output
operating range is configured independently per channel.
Table 2.3 Configuring Buffered Output Operating Range
Transducer Input Range Channel Connect XM-12x
Terminal
Negative Bias -24 to +9V 1 5 21
222 21
Positive Bias -5 to +24V 1 5 6
To XM-12x
Terminal
Publication GMSI10-UM001C-EN-E - June 2011
222 6
Non-Bias -5 to +9V 1 ---- ----
2 ---- ----
Installing the XM-720 Machine Monitor 21
IMPORTANT
By default, both buffered outputs have been wired for a
positive bias transducer (accelerometer and powered
sensor). This means that orange jumper wires have been
supplied on the XM-120/121/122 terminal block between
terminals 5, 6, and 22 (see Figure 2.9).
Figure 2.9 Jumpers for buffer input wiring
123456789100
1617 1819 2021 222324 2526 272829 3031 3233
3435 3637 383940 4142 434445 4647 48495
123456789100
161718 19 2021 2223 2425 2627 2829 3031 323 3
343536 373 839 4041 4243 4445 4647 4849 5051
1112 1314 15
111213 141 5 123456789100
16171819 202122 232425 26272829 30313233
Orange jumpers for
buffer outputs
11121314 15
34353637 383940 41424344 454647 48495051
If the transducer is not a positive bias transducer, follow
these guidelines:
• For a non-contact sensor, remove the orange jumper
between terminals 5 and 6 (terminals 22 and 6 for
channel 2) and install it between terminals 5 and 21
(terminals 22 and 21 for channel 2).
• For a non-bias sensor, such as a velocity sensor, remove
the orange jumper between terminals 5 and 6 (terminals
22 and 6 for channel 2).
Refer to Table 2.3 for details. Refer to the XM Users Guide
for more information about the XM-120/121/122 module.
Publication GMSI10-UM001C-EN-E - June 2011
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