Emerson A6500-LC User manual

Operating Manual
MHM-97878 , Rev 2.02
September 2022
Machinery Health™ Sensor
A6500-LC, LVDT Converter

Copyright
© 2022 by Emerson. All rights reserved.
No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any
language in any form by any means without the written permission of Emerson.
Disclaimer
This manual is provided for informational purposes. EMERSON MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS
MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. Emerson shall not be liable for errors, omissions, or inconsistencies that may be contained herein or for incidental or
consequential damages in connection with the furnishing, performance, or use of this material. Information in this document is
subject to change without notice and does not represent a commitment on the part of Emerson. The information in this manual is
not all-inclusive and cannot cover all unique situations.
Patents
The product(s) described in this manual are covered under existing and pending patents.
2

Contents
Chapter 1 General.......................................................................................................................... 5
1.1 Using this manual............................................................................................................................. 5
1.2 Symbols............................................................................................................................................5
1.3 Liability and guarantee..................................................................................................................... 6
1.4 Incoming goods inspection.............................................................................................................. 6
1.5 Technical support.............................................................................................................................6
1.6 Storage and transport.......................................................................................................................7
1.7 Disposal of the device.......................................................................................................................7
1.8 China RoHS Compliance................................................................................................................... 7
1.9 Installation awareness...................................................................................................................... 8
Chapter 2 Safety Instructions......................................................................................................... 9
2.1 Using the device............................................................................................................................... 9
2.2 Owner's responsibility.......................................................................................................................9
2.3 Radio interference............................................................................................................................ 9
2.4 ESD safety...................................................................................................................................... 10
Chapter 3 Application and Design................................................................................................ 11
3.1 Application.....................................................................................................................................11
3.2 Design............................................................................................................................................11
Chapter 4 Mounting and Installation............................................................................................15
4.1 CSA - Conditions of Acceptability....................................................................................................15
4.2 Mounting of the A6500-LC............................................................................................................. 15
4.3 Connections and wiring..................................................................................................................17
4.3.1 Voltage supply connection.......................................................................................................... 18
4.3.2 Sensor connection.......................................................................................................................19
4.3.3 Output signal connection............................................................................................................ 23
4.4 Commissioning.............................................................................................................................. 25
4.4.1 Commissioning of A6500-LCs with fixed sensitivity..................................................................... 25
4.4.2 Commission of a factory calibrated A6500-LC converter .............................................................27
4.4.3 LVDT sensor adjustment .............................................................................................................28
Chapter 5 Channel supervision.....................................................................................................31
Chapter 6 Function check.............................................................................................................35
6.1 Function check of A6500-LCs with fixed sensitivity......................................................................... 35
6.2 Function check of factory calibrated A6500-LCs............................................................................. 38
Chapter 7 Replacement of a defective sensor or A6500-LC............................................................41
7.1 Replace a defective sensor connected to a A6500-LC with fixed sensitivity..................................... 41
7.2 Replace a defective A6500-LC with fixed sensitivity........................................................................ 41
7.3 Replacement of a factory calibrated A6500-LC and sensor .............................................................42
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Chapter 8 Technical data..............................................................................................................43
8.1 Supply............................................................................................................................................ 43
8.2 Measuring range and sensitivity..................................................................................................... 43
8.3 Accuracy ........................................................................................................................................44
8.4 Signal output..................................................................................................................................44
8.5 Channel supervision....................................................................................................................... 45
8.6 Mechanical design and environmental conditions.......................................................................... 45
Chapter 9 Certificates.................................................................................................................. 47
Index .................................................................................................................................... 51
Contents Operating Manual
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1 General
1.1 Using this manual
This manual contains information concerning the proper and correct use of the A6500-LC
inductive converter.
For correct and safe use of this device the operating manual must have been read
completely prior to starting installation and operating of the device. In particular, all safety
instructions contained in the manual must be complied with.
This operating manual applies for A6500-LC LVDT Converters with hardware revision 03.
See type plate for revision level.
The device may only be transferred on to third parties by including the operating manual.
Note
When requesting technical support for this device, please indicate type and serial number
as shown on the type plate as well as the used converter type.
Table 1-1 shows a list of documents that are referred to in this operating manual.
Table 1-1: Referenced documents
OM PR9350 K20315 Operating Manual of the PR 9350 linear displacement transducer
MHM-97873 Operating Manual of the A6500-UM Universal Measurement Card
MHM-97877 Operating Manual of the A6500-xR System Racks
1.2 Symbols
Note
This symbol marks passages that contain important information.
CAUTION
This symbol marks operations that can lead to malfunctions or faulty measurements, but
will not damage the device.
DANGER
A danger indicates actions that can lead to property damage or personal injury.
According to IEC 61010, this symbol means that this device must be
operated with DC voltage.
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Warning, electric shock hazard.
According to IEC 61010, this symbol means that the documentation of
the device must completely be read and understood before installing and
commissioning of the device. Observe all safety related instructions in this
document.
1.3 Liability and guarantee
Emerson is not liable for damages that occur due to improper use. Proper use also includes
the knowledge of, and compliance with, this document.
Customer changes to the device that have not been expressly approved by Emerson will
result in the loss of guarantee.
Due to continuous research and further development, Emerson reserves the right to
change technical specifications without notice.
1.4 Incoming goods inspection
Check the content of the shipment to ensure that it is complete; visibly inspect the goods
to determine if the device has been damaged during transport. The following parts are
included in the scope of delivery and must be contained in the shipment.
•A6500-LC LVDT Converter for A6500-UM
•Operating manual for installing and using converter
If the contents is incomplete, or if you observe any defects, file a complaint with the carrier
immediately. Moreover, inform the responsible Emerson sales organization so your device
can be replaced. In this case, attach a non-detachable tag with customer name and the
observed defect to the device.
1.5 Technical support
You may need to ship this product for return, replacement, or repair to an Emerson
Product Service Center. Before shipping this product, contact Emerson Product Support to
obtain a Return Materials Authorization (RMA) number and receive additional instructions.
Product Support
Emerson provides a variety of ways to reach your Product Support team to get the answers
you need when you need them:
Phone Toll free 800.833.8314 (U.S. and Canada)
+1.512.832.3774 (Latin America)
+63.2702.1111 (Asia Pacific, Europe, and Middle East)
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Email [email protected]
Web http://www.emerson.com/en-us/contact-us
To search for documentation, visit http://www.emerson.com.
To view toll free numbers for specific countries, visit http://www.emersonprocess.com/
technicalsupport.
Note
If the equipment has been exposed to a hazardous substance, a Material Safety Data Sheet
(MSDS) must be included with the returned materials. An MSDS is required by law to be
available to people exposed to specific hazardous substances.
1.6 Storage and transport
Store and transport the device only in its original packaging. Technical data, "Technical
Data", specifies the environmental conditions for storage and support.
1.7 Disposal of the device
Provided that no repurchase or disposal agreement exists, recycle the following
components at appropriate facilities:
•Recyclable metal
•Plastic elements
Sort the remaining components for disposal, based on their condition. National laws or
provisions on waste disposal and protection of the environment apply.
Note
Environmental hazards! Electrical waste and electronic components are subject to
treatment as special waste and may only be disposed by approved specialized companies.
1.8 China RoHS Compliance
Our products manufactured later than June 30, 2016 and those which are sold in the
People's Republic of China are marked with one of the following two logos to indicate the
Environmental Friendly Use Period in which it can be used safely under normal operating
conditions.
Products without below mentioned marking are either manufactured before June 30 or
are non-electrical equipment products (EEP).
Circling arrow symbol with "e": The product contains no hazardous substances over
the Maximum Concentration Value and it has an indefinite Environmental Friendly
Use Period.
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Circling arrow symbol with a number: This product contains certain hazardous
substances over the Maximum Concentration Value and it can be used safely under
normal operating conditions for the number of years indicated in the symbol. The
names and contents of hazardous substances can be found in the folder "China
RoHS Compliance Certificates" on the documentation CD or DVD enclosed with the
product.
1.9 Installation awareness
Note
When planning a measurement, observe the following items:
•Consider environmental conditions which might have an influence on the
measurement such as temperature, humidity, substances aggressive to the sensor,
and pollution.
•Always use a stiff and vibration-free sensor holder.
•Define a suitable measuring range, not larger than necessary, in consultation with the
operator of the plant.
•Define the trip limit in consultation with the operator of the plant.
•Take measurement deviations into account when defining the trip limit.
•Use a sensor that meets the requirements of the defined measuring range.
•Ensure an EMC-compatible installation including the use of proper cables.
•Ensure proper function of the measurement before activating the measurement for
regular operation.
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2 Safety Instructions
To ensure safe operation, carefully observe all instructions in this manual.
The correct and safe use of this device requires that operating and service personnel both
understand and comply with general safety guidelines and observe the special safety
comments listed in this manual. Where necessary, safety-sensitive points on the device
are marked.
DANGER
Since the device is electrical equipment, commissioning and service may be performed
only by trained personnel. Maintenance may be carried out only by trained, specialized,
and experienced personnel.
2.1 Using the device
Install and use the device as specified in this document.
If the device is used in a manner not specified by the manufacturer, the functions and
protection provided by the device may be impaired.
2.2 Owner's responsibility
If there is a reason to suspect that hazard-free operation, and thus, adequate machine
protection is no longer possible, take the device out of operation and safeguard it from
unintentional operation. This is the case:
•if the device shows visible damage.
•if the device no longer works.
•after any kind of overload that has exceeded the permissible limits (such as those
detailed in chapter "Technical data," section "Environmental conditions").
DANGER
If device tests have to be completed during operation or if the device has to be replaced or
decommissioned, it will impair the machine protection and may cause the machine to
shut down. Make sure to deactivate machine protection before starting such work, and
reactivate it after work has been completed.
2.3 Radio interference
The device is carefully shielded and tested to be technically immune to radio interference
and complies with current standards. However, if you operate this device together with
other peripheral devices that are not properly shielded against radio interference,
disturbances and radio interferences may occur.
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2.4 ESD safety
DANGER
Internal components can be damaged or destroyed due to electrostatic discharge (ESD)
during the handling of the device.
Take suitable precautions before handling the device to prevent electrostatic discharges
through the sensor electronics. Such measures might include, for example, wearing an
ESD bracelet. Transport and storage of electronic components may only be made in ESD-
safe packaging.
Handle the device with particular care during dry meteorological conditions with relative
humidity below 30% as electrostatic discharges can appear more frequently.
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3 Application and Design
3.1 Application
The A6500-LC LVDT Converter is a single channel device to connect inductive half-bridge
sensors or LVDT sensors to the A6500-UM Universal Measuring Card. The converter
powers the sensor with an excitation voltage and converts the displacement proportional
sensor signal to an output voltage range that is suitable to the Universal Measuring Card.
The converter can be powered either by the Universal Measuring Card or by an external
power supply. The following sensor types can be connected:
•All types of the PR 9350/xx linear displacement transducers
•K20315/xx linear displacement transducer sets
•Inductive half-bridge sensors
•Inductive LVDT sensors as PR 9314/41
The A6500-LC has a fixed sensitivity of 4 V / (100 mV/V). The output voltage range
depends on the connected sensor.
On request, the A6500-LC can be calibrated on one sensor (factory calibration). The
measuring range of the sensor is scaled on the full output voltage range of 2 V to 18 V.
Then, the sensor and the A6500-LC form a measuring chain. Replacing the sensor requires
a recalibration of the A6500-LC.
The sensor supply voltage, supply current, and the sensor signal are supervised by the
internal supervision function.
3.2 Design
The A6500-LC LVDT Converter is enclosed in a housing with a DIN rail clip. All input and
output signals as well as the power supply are connected by screw terminals. Figure 3-1
shows the front view, connections, and the setting elements.
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Figure 3-1: Front view
A. Power supply connector (labeled 1 and 2)
B. Signal out connector (labeled 3 and 4)
C. Potentiometer Zero for the zero point calibration
D. Channel OK LED (see Table 3-1)
E. Button for calibration CAL
F. Sensor connectors (labeled 5 and 6, and 7 and 8)
Table 3-1: Meaning of LED colors
LED color Meaning
Red One or more supervised values are out of the OK limits. The
converter output voltage is set to <1.5 V
Green All supervised values are within the OK limits. The converter
output voltage is within the working range of the sensor.
Orange The Channel OK supervision is disabled (by button CAL or opened
wire bridge). The converter output voltage is within the working
range of the sensor. The output voltage is not set to <1.5 V even
if one of the supervised values is without the OK limits.
Figure 3-2 shows the side view of the A6500-LC LVDT Converter.
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Figure 3-2: Side view
A. Power supply connector
B. Signal out connector
C. DIN rail clip
D. Type label
E. Sensor connectors
Factory calibrated A6500-LC converters have an additional label located above the type
label. This label (see Figure 3-3) shows the sensor type and serial number of the sensor
adjusted to the A6500-LC.
Figure 3-3: Label factory calibrated
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4 Mounting and Installation
This chapter describes the mounting, the connections, and the commissioning of the
A6500-LC LVDT Converter.
4.1 CSA - Conditions of Acceptability
CAUTION
The A6500-LC LVDT Converter may only be operated with devices that are supplied with
safety low voltage. For this reason, a power supply unit according to EN/IEC 60950-1 or
EN/IEC 61010-1 is required. In addition, care should be exercised in the physical
installation of the A6500-LC. Wrong polarity and/or improper installation can result in false
signals, which do not represent actual measured quantities.
•The equipment is designed for use in a maximum ambient temperature of +75°C.
•Ensure that the used cable is suitable for environmental temperatures in the range of
-35°C to +75°C.
•The equipment is for mounting in end-use systems.
•The equipment shall be installed, operated and serviced only by trained personnel to
ensure safe operation in the end-use system.
•Disconnecting means from mains supply source shall be provided in the end-use.
•The equipment shall be installed within another enclosure, which provides the safety
aspects and protects the operator from hazards.
•If at any time there is a conflict between the system safety provisions and any relevant
local (national or regional) requirements, the local requirements always take
precedence.
4.2 Mounting of the A6500-LC
It is recommended to mount the converter into a suitable housing that contains a
mounting rail of type NS 35/7.5. The minimum mounting space for the converter within
the housing is shown in Figure 4-1.
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Figure 4-1: Required mounting space
The converter is equipped with a built-in spring DIN rail clip for mounting rails of type NS
35/7.5. The minimum required mounting space on a DIN rail is equal to the converter
width of 20 mm.
For mounting the converter snap it onto the DIN rail as shown in Figure 4-2.
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Figure 4-2: A6500-LC mounted on a DIN rail
A. A6500-LC
B. DIN rail typ NS 35/7.5
4.3 Connections and wiring
The A6500-LC LVDT Converter is equipped with eight screw terminals for supply voltage
connection, sensor connection, and output signal connection. The minimum and
maximum permissible wire cross-section of the screw terminals is as shown in Table 4-1.
Table 4-1: Permissible wire cross-section
Wire description Wire cross-section
Minimum Maximum
Conductor cross section solid 0.2 mm²4.0 mm²
Conductor cross section stranded 0.2 mm²2.5 mm²
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Table 4-1: Permissible wire cross-section (continued)
Wire description Wire cross-section
Minimum Maximum
Conductor cross section AWG/kcmil 24 12
Required wire stripping length is 8 mm.
For connection of voltage supply and output signal, Emerson recommends the use of
double-shielded cables with shielded twisted pairs and an additional outer screen. For
example, cables of type LiYCY-CY 2x2x0.25 can be used.
For connection of PR 9350/.. sensors to the converter we recommend shielded cables with
a maximum cable length of 30 m, for example, cables of type LiYCY 3x0.75.
Table 4-2 shows the screw terminal assignment of the A6500-LC.
Table 4-2: Screw terminal assignment
Screw terminal number Function
1 Voltage supply +24 V DC
2 Voltage supply ground (GND)
3 Signal out
4 Signal ground (GND)
5 Sensor connection A
6 Sensor connection B
7 Sensor connection C
8 Sensor connection D
4.3.1 Voltage supply connection
The A6500-LC LVDT Converter requires a +24 V DC voltage supply. The screw terminals for
the supply voltage connections are terminal 1 for "+24 V DC" and terminal 2 for "Supply
ground (GND)". The converter is generally supplied by the A6500-UM Universal
Measurement Card installed into one A6500-xR System Rack slot (A6500-SR or A6500-RR).
Table 4-3 shows the backplane terminals to connect the supply voltage of both A6500-UM
channels to an A6500-LC converter.
Table 4-3: Terminal assignment list - voltage supply
Channel number A6500-UM A6500-xR terminals A6500-LC terminals
1 XRx1.31 : CH1-Supply+ 1 : +24 V DC
XRx1.41 : CH1-Supply- 2 : GND
2 XRx2.31: CH1-Supply+ 1 : +24 V DC
XRx2.41 : CH1-Supply- 2 : GND
1x = Slot number of the backplane
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Connect the supply voltage terminals to the respective A6500-xR System Rack terminals
of the AMS 6500 ATG system. If the A6500-LC shall be connected to channel 1 of the
A6500-UM card see row 1 in Table 4-3. For connection to channel 2 see row 2. Figure 4-3
shows an example connection to channel 1 of a A6500-UM card slot.
Figure 4-3: Connection of +24 V supply
4.3.2 Sensor connection
Half-bridge sensors
This section describes the connection of half-bridge sensors as PR 9350/xx or K20 315/xx.
Table 4-4 shows the assignment of the sensor cable wire colors to the sensor connection
terminals of the A6500-LC.
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Table 4-4: Half-bridge sensor cable wire color assignment
Sensor connection terminals -
A6500-LC
PR 9350/xx and K20 315/xx
Wire colors Sensor terminals
5 white A
6 brown B
7 green C
8 not connected ---
Connection to field housing cable shield ---
Connect the sensor cable according to the wire color assignment in Sensor connection to
the A6500-LC converter. Connect the sensor cable shield at the field housing inlet to
ground. Figure 4-4 shows a corresponding connection example.
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