Siemens SITRANS WW100 User manual

SITRANS
Weighfeeders
SITRANS WW100
Operating Instructions
7MH7180-....(SITRANS WW100)
06/2018
A5E33560618-AC
Introduction 1
Safety information 2
Description 3
Installing 4
Calibrating 5
Connecting 6
Commissioning 7
Maintenance 8
Troubleshooting 9
Technical data 10
Dimension drawings 11

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.
Siemens AG
Division Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
Document order number: A5E33560618
Ⓟ 04/2019 Subject to change
Copyright © Siemens AG 2015.
All rights reserved

Table of contents
1 Introduction...................................................................................................................................................5
1.1 The manual ..............................................................................................................................5
2 Safety information.........................................................................................................................................7
2.1 Safety and general precautions ...............................................................................................7
3 Description....................................................................................................................................................9
3.1 Weighfeeder operation.............................................................................................................9
3.2 WW100 Operation....................................................................................................................9
4 Installing .....................................................................................................................................................11
4.1 Installation steps ....................................................................................................................11
4.2 Electrical installation for servo driven models ........................................................................13
4.2.1 Configuring the Sinamics S120 Drive ....................................................................................13
4.2.1.1 Initial setup .............................................................................................................................13
4.2.1.2 Switching units .......................................................................................................................16
4.2.1.3 P0003 - Expert mode .............................................................................................................16
4.2.1.4 Parameters.............................................................................................................................17
4.2.1.5 Additional notes and important information............................................................................19
5 Calibrating ..................................................................................................................................................23
5.1 Test load ................................................................................................................................23
5.2 Zero........................................................................................................................................23
5.3 Span.......................................................................................................................................23
6 Connecting .................................................................................................................................................25
7 Commissioning ...........................................................................................................................................27
7.1 Shear gate..............................................................................................................................27
7.2 Skirtboards .............................................................................................................................27
7.3 Changing the conveyer belt ...................................................................................................28
7.4 Belt tension ............................................................................................................................29
7.5 Belt tracking ...........................................................................................................................29
7.6 Telescoper adjustment...........................................................................................................30
7.7 Weigh deck alignment............................................................................................................31
7.8 Quick startup overview...........................................................................................................32
7.9 Load cell replacement ............................................................................................................32
7.9.1 Removing old load cell ...........................................................................................................32
7.9.2 Installing new load cell ...........................................................................................................33
7.9.3 Recalibration ..........................................................................................................................34
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8 Maintenance ...............................................................................................................................................35
8.1 Preventative maintenance......................................................................................................35
8.1.1 Recommended preventative maintenance schedule .............................................................35
8.2 General maintenance.............................................................................................................36
8.3 Lubrication..............................................................................................................................36
8.4 Weighfeeder storage recommendations ................................................................................36
8.4.1 Load cell care.........................................................................................................................36
8.4.2 Gear reducer ..........................................................................................................................37
8.4.3 Electrical.................................................................................................................................37
8.4.4 Lubrication..............................................................................................................................37
8.4.5 Belt care .................................................................................................................................37
9 Troubleshooting..........................................................................................................................................39
9.1 Mechanical troubleshooting ...................................................................................................39
9.1.1 Zero Drift, non-repeatability, or non-linearity..........................................................................39
10 Technical data ............................................................................................................................................41
10.1 Specifications .........................................................................................................................41
11 Dimension drawings ...................................................................................................................................43
11.1 Open unit................................................................................................................................43
11.2 Open horseshoe.....................................................................................................................43
11.3 Open dust hood......................................................................................................................44
11.4 Enclosed unit..........................................................................................................................44
Index...........................................................................................................................................................45
Table of contents
SITRANS WW100
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Introduction 1
Note
The Siemens weighfeeder is to be used only in the manner outlined in this instruction manual.
1.1 The manual
This instruction manual covers the operation, installation, and maintenance of the Siemens
weighfeeder. Specific information for your weighfeeder model is also included with the product
such as testing documents.
The drive system for the servo gear motor of the SITRANS WW100 is a Sinamics S120 control
unit. All instruction manuals pertaining to the drive components can be found in the companion
manual appendix on the documentation CD.
Follow these operating instructions for quick, trouble-free installation, and maximum accuracy
and reliability of your device.
We always welcome suggestions and comments about manual content, design, and
accessibility. Please direct your comments to:
Technical publications (mailto:[email protected])
For the complete library of Siemens manuals, go to:
Process Automation portal (http://www.siemens.com/processautomation)
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Introduction
1.1 The manual
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Safety information 2
2.1 Safety and general precautions
WARNING
ALWAYS STOP the belt, lock-out, and/or place a "Do Not Energize" tag on the main
disconnect before working on or around the weighfeeder.
WARNING
Always follow established safe operating practices when working on or around the
weighfeeder, especially in wet environments and when adjacent to conductive steel mounting
framework.
Note
A weighfeeder can be dangerous. Pinch points exist along the conveyor belt line.
Secure the weighfeeder when:
• replacing the belt
• working on or around the load cell(s)
• working on or around the speed sensor
• working on or around the drive components
• working on or around the motor
• placing or removing the calibration test chain
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Safety information
2.1 Safety and general precautions
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Description 3
SITRANS WW100 is a high-accuracy, low capacity weighfeeder for minor ingredient additives.
The unique long length platform weigh bridge mounts directly to a corrosion-resistant platform
load cell. An adjustable mechanical shear gate profiles the material and fixes the correct
material bed depth for a given material application. The belt speed can be automatically
adjusted to attain the correct feed rate.
SITRANS WW100 comes with a weigh bridge, speed sensor, variable frequency drive (if
ordered), and calibration test chain (if ordered). An integrator is required to complete the
system.
3.1 Weighfeeder operation
Weighfeeders weigh bulk material while it is conveyed. An accurate rate of flow and totalized
weight measurement is received without interrupting the flow of material in process. A
weighfeeder can also control the rate of flow of the conveyed product.
In-motion weighing requires accurate transmission of the product load to load cells. The
resulting voltage signal corresponding to weight is transmitted to the integrator and becomes
one of the two inputs required for integration.
Unlike static weighing, in-motion weighing integration requires a second input: a pulse signal
proportional to the speed of the conveyor belt. Each belt speed sensor pulse represents a fixed
distance of belt travel.
Since the force measured by the load cell is represented as weight per unit length, it can be
multiplied by the distance of belt travel (one speed sensor pulse) to provide product weight for
that segment of the belt (lbs/ft x ft = lbs, or kg/m x m = kg).
Adding the samples provides total throughput weight of product across the scale. With proper
scaling and calibration, the total weight can be displayed in kilograms, pounds, short tons, long
tons, metric tons, or other appropriate units.
3.2 WW100 Operation
This weighfeeder is designed for assembly for both left and right side belt change. The unit can
be dis-assembled and re-assembled on the opposite side with the same components.
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Enclosed unit
Open unit
Description
3.2 WW100 Operation
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Installing 4
Note
When lifting the weighfeeder, connect to the lifting points at the top of the unit or structural
frame, and follow local governing code for lifting/hoisting.
Perform a thorough and systematic inspection of containers immediately upon receipt of your
Siemens weighfeeder. The containers are packed to separate each item and provide protection
during shipping.
Note
Do not remove equipment from shipping crates or boxes until you check for possible shipping
damage. Contact the carrier immediately if damage is noted.
Your weighfeeder has been designed, assembled, and factory tested for your specific
application.
Note
● The frame of the weighfeeder needs to be grounded to ensure accurate signal processing
to the integrator.
● Do NOT remove the tagged load cell shipping bolt(s) until the installation is complete to
prevent load cell damage.
● Do NOT weld on or near the weighfeeder while the load cell is connected to the electronic
integrator. Damage to the integrator may result if the load cell is not disconnected from the
integrator.
● Follow a scheduled, preventative maintenance program to ensure optimum performance
and long equipment life.
4.1 Installation steps
Note
● Only qualified personnel are authorized to install and operate this equipment. Installation
shall be in accordance with local regulations, standards and established safety practices.
Read and understand the instructions before installing, operating or maintaining the
equipment.
● Flexible in-feed connections are REQUIRED for all applications. Flexible discharge
connections are also recommended.
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1. Construct the necessary support framework to provide a sturdy, rigid base. Vibration
isolators are recommended if the location is subject to moderate or heavy vibration.
2. Align the in-feed section of the weighfeeder with the discharge of the feed device. Prevent
twisting or misalignment that could induce stress on the weighing section.
3. Install a gasket between the flanges for dust control.
4. Securely fasten the unit to the rigid, level structure constructed in step 1. Use a level for
verification and shim as necessary. Prevent any twisting of the frame that may affect
weighfeeder performance.
Note
The inlet and discharge of the weighfeeder will not support load.
5. Note
If your system has a permanently lubricated gear motor, then disregard this step, and
proceed directly to step 6.
Check the gear reducer oil level. For further details, see the gear reducer information
under Maintenance.
6. A de-dust port may be provided at the discharge end of enclosed units. If no de-dust system
is required, this port should be closed.
7. Connect the proper electric supply to the motor and/or motor controller. The AC or DC motor
controller (if present) must be grounded to minimize noise to the electronic integrator. Refer
to the applicable wiring diagram to make all electrical connections between the electronic
integrator and the weighfeeder.
Note
Units with a plugged discharge switch should refer to the wiring diagram included in the
CLS100 manual.
8. Remove only the tagged shipping bolt that is attached to the load cell. This bolt supports the
weighbridge during transport and installation.
Note
DO NOT loosen or tighten the overload bolt—it has been factory set to minimize the
possibility of load cell damage resulting from incidental overload.
9. Before starting the weighfeeder, make a final check to see that the conveyor belt is free of
all tools and foreign objects, and that the infeed/skirtboards are not pinching against the belt.
Installing
4.1 Installation steps
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4.2 Electrical installation for servo driven models
Note
● The frame of the weighfeeder needs to be grounded to ensure accurate signal processing
to the integrator.
● Refer to the electrical connection diagrams for several different S120 connection scenarios.
● The communication cable (green) and power cable (orange) must connect the servo motor
to the S120 to operate. The power (orange) cable has identifying markings on the shield to
ensure the connections match.
WARNING
If the emergency stop is independent from the integrated safety feature on the control unit,
wire or jumper the digital inputs to complete the circuit.
4.2.1 Configuring the Sinamics S120 Drive
4.2.1.1 Initial setup
WARNING
● New devices are shipped with factory default values in Non-Volatile MEMORY!
● P977 should be used with CAUTION when saving the Application Data to the Micro
Memory Card.
● If the project has not been loaded in the Non-Volatile MEMORY, your application software
on the MICRO MEMORY CARD will be overwritten and LOST!
Important Command and Drive Data Set Notes
The following acronyms are referenced through the documentation required for the startup of
your Sinamics S120 Drive and WW100 Weighfeeder:
Acronym Full term Definition
CDS Command
Data Set
Any parameters that may be changed or viewed and are associated with
the Control Unit. This parameter set can be associated with any type of
control mode change such as enable signals, control functions, inputs and
outputs, etc.
DDS Drive Data
Set
Any parameters that may be changed or viewed and are associated with
the Drive Unit. This parameter set effectively changes the characteristics
or dynamics of the motor, gearbox and belt speed of the WW100 Weigh‐
feeder.
The most common change for this application would be the maximum RPM (Belt Speed) of the
weighfeeder (P2000), and possibly the Reversal of Belt Direction (P1113), if required.
Installing
4.2 Electrical installation for servo driven models
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The Design Speed (P14-BW500) of the weighfeeder application will be referenced when
calculating the programmable maximum speed. Further details of the Design Speed and
applicable settings can be found in P2000 - Maximum RPM (Page 17).
Powering Up the Sinamics S120 Drive and Control Unit
Once all the necessary hardware and electrical connections (Drive Cliq Cable and Motor Power
cable) have been installed, the system can be powered up. See the connection diagrams in the
Appendix.
Note
● With only the 24 V DC power source active, the control unit and display will be maintained.
However, faults or alarms may occur due to the loss of the Main AC power source to the
Power module. The unit may require a Power cycle to clear the Faults or Alarms.
● Turn off the 24 Volt DC supply and let the system power down. Turn main AC power source
on then turn the 24 VDC supply on.
1. Apply the main power to the Power module.
The drive will perform its boot sequence and the RDY LED should be a steady green when
completed.
If any errors display during the initial power up, refer to Faults and Alarms (Page 21).
2. Remove all power sources from the Power module and Control module, Main AC and 24 V
DC.
Ensure device powers down completely.
Loading the Software Application Data Set
The following procedure defines the specific steps required to download the application
software from the Micro Memory Card (MMC) to the Non-Volatile Memory (ROM). Perform a
RAM-to-ROM save function within the control unit, and back up the changed Application Data
to the MMC card.
1. Ensure all power sources to the drive are switched OFF.
2. Insert the pre-programmed MMC into the card slot located below the BOP Display and
ensure the card locks into place.
Installing
4.2 Electrical installation for servo driven models
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3. Apply main AC Power first and then the 24 Volt DC Power to the Drive.
The Control Unit will recognize the card, and automatically load or overwrite the Data Set 0
to the Control Unit Non-Volatile memory. This procedure will only work for DataSet 0; no
other data sets will be affected.
S120 Display
The keypad will be shipped in a separate carton with Part Number:6SL3055-0AA00-4BA0,
which will have to be installed onto the Control Unit.
1
2
3
4
①Drive number: there are two drive data sets, each with their own set of parameters.
● 01 = Command Data Set
● 02 = Drive Data Set
②Parameter/value
● RUN mode
● EDIT mode
③Function key
④Parameter key
4. The data is read and loaded to memory prior to performing a Run-up sequence of the drive.
This procedure will take approximately 30 – 60 seconds longer at power up.
Note
When this step is complete, the display will register a F01650 fault.
This indicates that the drive is requesting an acknowledgement that the Emergency Stop
Safety circuitry has been checked and is working. This fault can be acknowledged by
pressing the key.
5. Once the fault has been cleared, the display will indicate a 0.0 value in the parameter/value
field ②; this is the actual RPM display of the motor.
6. Once all necessary equipment has been connected and all sources of power applied for the
activation of the inputs and outputs, the drive unit should now be ready to activate.
– At this point, the WW100 may begin to move if the drive enables are set and if the Signal
Source voltage (i.e. Potentiometer) or the Analog input has a potential higher than zero
(0) volts!
– The application will be set for a maximum motor speed of 2500 RPM, approximately 50
FPM or 0.254 meters/second. Refer to P2000 - Maximum RPM (Page 17) to effectively
set the maximum RPM for the application.
Installing
4.2 Electrical installation for servo driven models
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Test the functionality of the drive and weighfeeder. Also note the direction of belt travel; if
incorrect, refer to P1113 (Page 18) to invert the signal for belt direction.
Note
Please refer to Additional notes and important information (Page 19) for details on required
enable signals.
4.2.1.2 Switching units
Note
While commissioning using the BOP 20 interface standard equipment, there are two data sets
to consider when changing parameters:
● The drive unit or DDS (Drive Data Set) will be identified as 02.
● The Control unit CDS (Command Data Set) will be identified as 01.
This data set is indicated in the drive number field ②. Each unit has its own set of parameters
and is only available when in that specific display mode.
The following diagram illustrates how to switch from one unit to another using the BOP Keypad.
1. While holding the key, press one of the arrow keys ( or ). This will allow you to
change from Unit 01 to 02 as indicated by the flashing display.
2. Scroll to the appropriate selection using the arrow keys.
3. Once you have chosen the appropriate unit, press the key to acknowledge the selection:
the display will stop flashing.
4.2.1.3 P0003 - Expert mode
P0003 must be set to EXPERT MODE to access/modify parameter settings.
1. Set S120 display to drive number 01 (see Switching units (Page 16)).
2. Use or arrows to navigate to P0003.
3. Press so the current parameter value is displayed.
4. Press to activate edit mode (display will flash).
Installing
4.2 Electrical installation for servo driven models
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5. Use or arrows to set the value to 3.
6. Press and hold for 3 seconds to save.
You now have access to all of the parameter sets for both the Control Unit and Drive Unit.
4.2.1.4 Parameters
Note
In order to access or modify the parameter settings, P0003 must be set to EXPERT MODE
(see P0003 - Expert mode (Page 16)).
P2000 - Maximum RPM
Sets the maximum motor RPM.
The factory default value of the Drive configuration RPM is 6000. At the factory, we have set this
to a maximum of 2500 as the weighfeeder should not exceed the corresponding belt speed of
approximately 50 ft/min or 0.254 meters/second.
The application for which this weighfeeder will be used has been engineered by a software tool
at Siemens. From the data provided, certain parameters are generated identifying the
Design Rate, Design Speed, and Design Load. You are interested in the Design Speed: this will
aid in setting the Maximum RPM – P2000.
Calculating P2000
Design Speed P14 refers to Parameter 14 of the Siemens integrator BW500. Please see the
Technical Report supplied with the weighfeeder.
Imperial:
P2000 = Design Speed (P14-BW500) * k Factor (47.28702)
Metric:
P2000 = Design Speed (P14-BW500) * k Factor (9308.468)
Here are a few examples with both metric and imperial application data.
Design Speed k Factor P2000 Design Speed k Factor P2000
ft/min. imperial CU310-2 m/sec. metric CU310-2
10 47.28702 472.870 0.05080 9308.458 472.870
22 47.28702 1040.31 0.11176 9308.458 1040.31
35 47.28702 1655.05 0.17780 9308.458 1655.05
50 47.28702 2364.351 0.25400 9308.458 2364.351
1. Set S120 display to drive number 02 (see Switching units (Page 16)).
2. Use or arrows to navigate to P2000. The value should read 2500 after the application
software has been loaded.
3. Press to access and view the current setting.
Installing
4.2 Electrical installation for servo driven models
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4. To change this value, press the key The display will begin to flash. Sequentially pressing
the key will increment
the display to the next higher digit.
5. Use or arrows to set the RPM value (as calculated above).
6. Press to accept the new value and exit edit mode (display will stop flashing).
Note
Although this value has been changed, it has only been saved in RAM memory. A RAM to
ROM must be performed in order to be maintained.
7. To save this new setting, press and hold for 3 seconds. The display will begin to flash
indicating the RAM to ROM function is active. This will perform a RAM to ROM backup of all
parameters.
P1113 - Belt direction
P1113 – SetPoint Inversion Parameter. Drive 02 parameter
If the belt is travelling in reverse, change P1113 setting to alternate value.
The design of the WW100 weighfeeder is such that the servo Gear motor can be mounted on
either the left or right hand side of the weighfeeder. Given the versatility of the configuration, it
is necessary for the motor shaft output to be reversible. Therefore, parameter P1113 can be set
to accommodate a forward or reverse operation. However, one must note that the BOP display
for RPM may reflect a negative - 0.00 value. This is not a concern to the operator or
maintenance staff for regular operation of the drive.
If the weighfeeder is set up and you realize the belt is traveling in the reverse direction, proceed
as follows:
1. Set S120 display to drive number 02 (see Switching units (Page 16)).
2. Use or arrows to navigate to P1113.
3. Press so the current parameter value is displayed.
4. Press to activate edit mode (display will flash).
5. Use or arrows to set the value to either 0 or 1 (whichever is the alternate).
6. Press to accept the new value, and exit edit mode (display will stop flashing).
Note
Although this value has been changed, it has only been saved in RAM memory. A RAM to
ROM must be performed in order to be maintained.
7. To save this new setting, press and hold for 3 seconds. The display will begin to flash
indicating the RAM to ROM function is active. This will perform a RAM to ROM backup of all
parameters.
Installing
4.2 Electrical installation for servo driven models
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Saving parameter changes
Note
When you make changes to a parameter with the BOP, they are maintained only in the RAM
memory so that if the power is cycled prior to performing a Save Function, your changes will be
lost. To avoid this, save the data set either to the ROM-Non Volatile Memory, or both the
ROM and Micro Memory Card. Both options are described below.
RAM to ROM
At any point during the commissioning, the data can be saved to non-volatile memory. This is
initiated by pressing and holding the key for three seconds. The display will begin to flash,
indicating the RAM to ROM function is active.
When complete, the display will stop flashing and remain solid.
RAM to ROM and Micro Memory Card, P977=1.
1. Set S120 display to drive number 01 (see Switching units (Page 16)).
2. With the Power ON, insert the Micro Memory Card into the card slot below the BOP Display
and ensure the card locks into place.
3. Use or arrows to navigate to P0977.
4. Press so the current parameter value is displayed. The default value is 0. Any other value
initiates a function within the Control Unit.
5. Use or arrows to set the value to 1.
The display will begin to flash indicating that the save function is active. The Data Set
currently active in the RAM will be saved to the ROM (Non-Volatile Memory) as well as the
MMC card.
Note
This type of saving will overwrite any existing Data Set with the index of 0 on the Micro
Memory Card. You should only have a Data Set with an index of 0.
4.2.1.5 Additional notes and important information
Inputs and outputs
All inputs and outputs are identified on the schematics act as discreet I/O to the CU305DP
Control Module. All related functions for the I/O are programmed internally to the Control Unit,
therefore, requiring specific States and or Change in States for proper drive functionality.
Please review the electrical schematics to understand what inputs are required for Hand or
Automatic mode enable signals as well as the Analog Speed reference signals.
Each of the labeled inputs has been programmed into an AND/OR gate function, and therefore
is required for operation of the drive. A brief description below will help explain the input
requirements:
Installing
4.2 Electrical installation for servo driven models
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Label Input Description
Hand DI 0 (X121.1) Manual Mode, Local Operation only. Potentiometer
Control.
Off - - - - - - - - - Not connected. No Mode signal present!
Automatic DI 1 (X121.2) For DCS or PLC Master Control.
DCS Enable DI 2 (X121.3) Required for DCS or PLC Master Control.
Stop DI 3 (X121.4) Maintained Active High Input.
Start DI 8 (X121.7) Momentary Low to High Input to set RS Flip Flop.
Emerg. Stop Ch 1. DI 16 (X120.3) Required Active HIGH Input for Motor Control
Emerg. Stop Ch 2. DI 17- (X120.5) Required Active HIGH Input for Motor Control
Manual Mode:
Requires only the Hand input HIGH and an analog reference signal.
Automatic Mode:
Requires the Automatic and DCS enable inputs HIGH and an analog reference signal.
Resolution of the Analog Input
This is extremely important when determining the maximum speed of the weighfeeder. Set
P2000 according to the calculated results or within 15% of this value. This will optimize the
resolution of the analog control signal. The better the resolution, the better the control function
for maintaining Rate, Load, or Speed.
You may also consider increasing the RPM (Design Speed) of the drive. Depending on the
setup of the application, maximum speed vs. maximum loading, this will accommodate material
shortages in a shearing application and allow for infrequent increases in speed to maintain a
programmed Rate or Load.
Emergency Stop Wiring Overview
As detailed in the electrical schematics, the Emergency Stop circuit is a critical component of
the drive and its operating state. The Sinamics S110 Drive has built-in Safety Integrated
Functions. When wired correctly, this circuit functions as a Category 3 safety stop for the drive
and corresponding motor. At the same time, the circuit performs an additional dual purpose
function for the application.
First The drive realizes a change in state of the dual channel input. If either of these
inputs are lost, the drive brings the motor shaft to a controlled stop via the Safe
Torque Off mode.
Second The purpose of the dual channel input is to monitor both the Positive and Com‐
mon channel of the DC power source. In turn, the dual channel digital output of
F-DO 0(16) is wired in series to the corresponding control relays (refer to sche‐
matics) which function as a cutout of the Mains Power in the event of an Emer‐
gency Stop situation.
Installing
4.2 Electrical installation for servo driven models
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20 Operating Instructions, 06/2018, A5E33560618-AC