Page 1
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
Speed sensors
Milltronics RBSS
Operating Instructions
07/2018
A5E45419003
Introduction
1
Description
2
Installing/mounting
3
Connection
4
Service and maintenance
5
Technical data
6
Dimension drawings
7
Certificates and support
A
-AA
Page 2
Siemens AG
Division Process Industries and Drives
Postfach 48 48
90026 NÜRNBERG
GERMANY
Document order number: A5E45419003
Ⓟ
Copyright © Siemens AG 2018.
All rights reserved
indicates that death or severe personal injury will result if proper precautions are not taken.
indicates that death or severe personal injury may result if proper precautions are not taken.
indicates that minor personal injury can result if proper precautions are not taken.
indicates that property damage can result if proper precautions are not taken.
Siemens products may only be used for the applications described in the catalog and in the relevant technical
ambient conditions must be complied with. The information in the relevant documentation must be observed.
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
WARNING
CAUTION
NOTICE
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
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
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.
11/2018 Subject to change
Page 3
Table of contents
1 Introduction ................................................................................................................................................ 5
2 Description ................................................................................................................................................. 7
3 Installing/mounting ..................................................................................................................................... 9
4 Connection .............................................................................................................................................. 13
5 Service and maintenance ........................................................................................................................ 15
6 Technical data ......................................................................................................................................... 19
7 Dimension drawings ................................................................................................................................ 23
A Certificates and support ........................................................................................................................... 25
1.1 Operating instructions scope .................................................................................................... 5
1.2 Industrial use note ..................................................................................................................... 5
2.1 Milltronics RBSS overview ........................................................................................................ 7
3.1 Location .................................................................................................................................... 9
3.2 Device without mounting bracket .............................................................................................. 9
3.3 Device with mounting bracket ................................................................................................. 11
3.4 Installation steps ..................................................................................................................... 11
3.4.1 Device without mounting bracket ............................................................................................ 11
3.4.2 Device with mounting bracket ................................................................................................. 12
5.1 Inspection ................................................................................................................................ 15
5.2 Unit repair and excluded liability ............................................................................................. 15
5.3 Wheel and bearing repair ....................................................................................................... 15
6.1 Power ...................................................................................................................................... 19
6.2 Temperature ........................................................................................................................... 19
6.3 Input ........................................................................................................................................ 19
6.4 Output ..................................................................................................................................... 19
6.5 Cable ....................................................................................................................................... 20
6.6 Construction ............................................................................................................................ 20
6.7 Approvals ................................................................................................................................ 20
7.1 RBSS ...................................................................................................................................... 23
7.2 Mounting bracket .................................................................................................................... 24
A.1 Certificates .............................................................................................................................. 25
A.2 Technical support .................................................................................................................... 25
Milltronics RBSS
Operating Instructions, 07/2018, A5E45419003-AA
3
Page 4
Page 5
1
1.1
Operating instructions scope
1.2
Industrial use note
Note
•
•
This instruction manual covers the installation, operation and maintenance of the RBSS
Speed Sensor Integrator.
The RBSS is to be used only in the manner outlined in this instruction manual.
This product is intended for use in industrial areas. Operation of this equipment in a
residential area may cause interference to several frequency based communications.
Milltronics RBSS
Operating Instructions, 07/2018, A5E45419003-AA
5
Page 6
Introduction
1.2 Industrial use note
Milltronics RBSS
6 Operating Instructions, 07/2018, A5E45419003-AA
Page 7
2
2.1
Milltronics RBSS overview
The Milltronics RBSS is a high-resolution, wheel-driven return belt speed sensor that
provides speed input to an integrator when used on a belt scale system.
The RBSS has a toothed gear, wheel, and trailing arm assembly, that rides along the return
belt. The gear and wheel rotate on a shaft fixed to the trailing arm. The internal magnetic
sensor detects the gear rotation and generates a signal proportional to the belt speed. The
output signal is transmitted via cable connection to the integrator to determine the rate of the
conveyed material.
The RBSS IS speed sensor contains a Pepperl + Fuchs, NAMUR rated, inductive proximity
switch, model number: NJ0.8-5GM-N. The proximity switch detects the gear rotation, and
transmits a signal to the integrator via the associated Switch Isolator.
Milltronics RBSS
Operating Instructions, 07/2018, A5E45419003-AA
7
Page 8
Description
2.1 Milltronics RBSS overview
Milltronics RBSS
8 Operating Instructions, 07/2018, A5E45419003-AA
Page 9
3
3.1
Location
3.2
Device without mounting bracket
The RBSS should be located near the scale assembly to simplify wiring. The wheel should
ride on the return belt, either just before or just after a return belt idler.
The standard RBSS mounting attaches to the conveyor stringers via a customer-supplied
1 inch cross bar, cut and fastened to the stringers.
Milltronics RBSS
Operating Instructions, 07/2018, A5E45419003-AA
9
Page 10
Installing/mounting
① Return belt travel
② Belt
③ Stringer
④
⑤
⑥
(by customer)
⑦
cross bar (by customer)
⑧
⑨
3.2 Device without mounting bracket
RBSS
24 mm (1 inch) dia.
Cable
Stringer
Washers, 2 places
Wheel
Milltronics RBSS
10 Operating Instructions, 07/2018, A5E45419003-AA
Page 11
Installing/mounting
3.3
Device with mounting bracket
3.4
Installation steps
3.4.1
Device without mounting bracket
3.3 Device with mounting bracket
The RBSS speed sensor attaches to a customer-supplied structural cross member via a
pivot and bracket assembly.
① Cross member (customer-supplied)
1. Measure the distance between the inside of the conveyor stringers, and then cut the
24 mm (1 inch) cross bar to the measured length.
2. Orient the return belt speed sensor. See RBSS without mounting bracket (Page 9).
3. Slide the cross bar through the hole on the end of the return belt speed sensor, and then
slide one 24 mm (1 inch) washer onto either end of the cross bar.
4. Position the assembly so the sensor wheel rides in the middle of the return belt.
5. Make sure there is 3 mm (1/8 inch) clearance between the sides of the sensor and the
washers, and then tack-weld the washers to the cross bar.
6. Tack-weld one end of the cross bar to one stringer.
7. Square the entire assembly with the return belt so the wheel will ride straight.
8. Tack-weld the other end of the cross bar to the opposite stringer, making sure the
assembly remains square with the belt.
9. Run the belt to check that the wheel is riding straight on the belt and is not pulling to
either side. If necessary, break one weld and pivot the entire assembly until the wheel
runs true.
Milltronics RBSS
Operating Instructions, 07/2018, A5E45419003-AA
11
Page 12
Installing/mounting
① Stringer
② Tack-weld
③ Washers (2 places)
④
⑤
3.4.2
Device with mounting bracket
3.4 Installation steps
Cross bar
1. Position the RBSS mounting bracket against a structural cross member so the sensor
wheel rides in the middle of the return belt. See RBSS with mounting bracket (Page 11).
2. Drill and fasten or tack-weld the RBSS mounting bracket in place.
3. Position the RBSS between the bracket arms, and insert pin. Insert pin clip into pin.
4. Run the belt to check that the wheel is riding straight on the belt and is not pulling to
either side. If necessary, reposition the bracket until the wheel runs true.
Return belt
Milltronics RBSS
12 Operating Instructions, 07/2018, A5E45419003-AA
Page 13
4
Note
All wiring must be done in conjunction with approved conduit, boxes, and fittings and to
procedures in accordance with all governing regulations.
RBSS CE
RBSS
Integrator
White
Signal
RBSS IS
RBSS IS
IS Switch Isolator Terminal
Integrator
Brown
1 Blue
3 7 Speed signal input
8 - excitation of load cells
Ensure that there is sufficient slack in the cabling to allow the RBSS arm to pivot freely so
the wheel rides on the belt. Restriction of the arm can cause slippage or excessive contact
between the belt and the wheel.
Red Excitation
Black Common
Milltronics RBSS
Operating Instructions, 07/2018, A5E45419003-AA
13
Page 14
Connection
Milltronics RBSS
14 Operating Instructions, 07/2018, A5E45419003-AA
Page 15
5
5.1
Inspection
5.2
Unit repair and excluded liability
5.3
Wheel and bearing repair
Case 1
● Inspect the RBSS periodically to ensure that it can rotate freely about the pivot pin or
cross bar.
● Inspect the proximity switch area periodically and remove any material build-up.
All changes and repairs must be done by qualified personnel and applicable safety
regulations must be followed. Please note the following:
● The user is responsible for all changes and repairs made to the device.
● All new components must be provided by Siemens Milltronics Process Instruments Inc.
● Restrict repair to faulty components only.
● Do not re-use faulty components.
For tube housings with through holes for bolt and bushings of 22 mm (7/8 inch).
Parts required:
● 1 - wheel assembly, complete with sealed bearings and 60 tooth gear
● 2 - bushings
● 1 - M12 washer (optional - see ⑪ on diagram below)
● 2 - stepped washers
● 1 - hex head bolt M12 x 1.75, 120 mm long
● 1 - locking hex nut M12 x 1.75
Milltronics RBSS
Operating Instructions, 07/2018, A5E45419003-AA
15
Page 16
Service and maintenance
Case 2
Note
Spare parts kit 7MH7723
washers and stepped washers are provided.
5.3 Wheel and bearing repair
For tube housings with through holes for bolt of 13 mm (1/2 inch).
Parts required:
● 1 - wheel assembly, complete with sealed bearings and 60 tooth gear
● 2 - bushings
● 3 - M12 washers (1 of 3 washers is optional - see ⑪ on diagram below)
● 1 - hex head bolt M12 x 1.75, 120 mm long
● 1 - locking nut M12 x 1.75
-1FX contains parts for both Case 1 and Case 2. Extra M12
Milltronics RBSS
16 Operating Instructions, 07/2018, A5E45419003-AA
Page 17
Service and maintenance
①
②
③
④
⑤
nut3)
⑥
⑦
⑧
⑨
⑩
⑪
rial 4
square tubing
metric
100
ing
5.3 Wheel and bearing repair
M12 flat washer (2)2)
Side view
13 mm (½ inch) hole2)
Bushing (2)
1)
Case 1
2)
Case 2
3)
Torque to 34 Nm (25 ft/lb)
Stepped washer (2)1)
M12 x 1.75 locking hex
60 tooth gear
Optional M12 washer:
Required of housing is impe-
x 3/16 inch
Not required if housing is
x 100 x 5 mm square tub-
Front view
22 mm (7/8 inch) hole1)
Wheel assembly
Milltronics RBSS
Operating Instructions, 07/2018, A5E45419003-AA
17
Page 18
Service and maintenance
5.3 Wheel and bearing repair
Milltronics RBSS
18 Operating Instructions, 07/2018, A5E45419003-AA
Page 19
6
6.1
Power
RBSS CE
4.5 ... 28 V DC, 16 mA max.
RBSS IS
5 ... 25 V DC from IS Switch Isolator
6.2
Temperature
RBSS IS
-25 ... +100 °C (-14 ... +212 °F)
6.3
Input
Shaft rotation 2 ... 450 rpm, bi-directional
6.4
Output
45.8 pulses/foot (150.4 pulses/meter)
RBSS CE
Open collector sinking output, 25 mA
RBSS IS
Load current, 0 ... 15 mA
RBSS CE -40 ... +110 °C (-40 ... +230 °F)
60 pulses per revolution, 2 ... 450 Hz,
Milltronics RBSS
Operating Instructions, 07/2018, A5E45419003-AA
19
Page 20
Technical data
6.5
Cable
switch isolator and integrator
6.6
Construction
Trailing arm
Painted mild steel
Sensor wheel
127 mm (5 inch) diameter, polyurethane tread
6.7
Approvals
RBSS CE
CE
(See Switch and Isolator Approvals below.)
6.5 Cable
RBSS CE 3 m (10 ft), 3 conductor 22 AWG (0.324 mm
PVC shielded cable 300 m (1 000 ft) maximum
cable run
RBSS IS 2 m (6.5 ft), 2 conductor 26 AWG (0.129 mm2),
PVC covered cable
300 m (1 000 ft) maximum cable run to IS switch
isolator
300 m (1 000 ft) maximum cable run from IS
2
),
RBSS IS Uses CE, ATEX and CSA approved Pepperl +
Fuchs Proximity Switch and IS Switch Isolator
Milltronics RBSS
20 Operating Instructions, 07/2018, A5E45419003-AA
Page 21
Technical data
Switch and Isolator Approvals
Note
The Approval Ratings for the Proximity Switch and the IS Switch Isolator are the property of
Pepperl + Fuchs. For current approvals go to: http://www.am.pepperl
(
6.7 Approvals
-fuchs.com
http://www.am.pepperl-fuchs.com).
Proximity Switch Approval Ratings
(Pepperl + Fuchs #NJ0.8-5GM-N)
IS Switch Isolator Approval Ratings
(Pepperl + Fuchs #KFA5-SOT2-Ex2 and #KFA6SOT2-Ex2)
• ATEX II 1D Ex iaD 20 T 108 °C (with suitable
IS Switch Isolator)1)
• CSA (with suitable IS Switch Isolator or
Switch Amplifier):
– General Purpose
• CE
• ATEX II 1G D [EEx ia] II C
• CSA:
– Class I, Div. 1, Groups A, B, C, and D
– Class II, Div. 1, Groups E, F, and G
– Class III
• CE
1)
Based on the ATEX rating of the NAMUR slotted sensor and CSA approvals.
Milltronics RBSS
Operating Instructions, 07/2018, A5E45419003-AA
21
Page 22
Technical data
6.7 Approvals
Milltronics RBSS
22 Operating Instructions, 07/2018, A5E45419003-AA
Page 23
7
7.1
RBSS
①
both walls
②
gland 22 mm(0.88 inch)
③
④
⑤
Milltronics RBSS
Operating Instructions, 07/2018, A5E45419003-AA
Dimensions in mm (inch)
ø 25 mm (1 inch) through
Sensor
1)
Cable for RBSS IS is 2 m (6.5 ft).
2)
Dimension equals 102 mm (4 inch) if manufactured in Canada.
3)
Dimension equals 51 mm (2 inch) if manufactured in Canada.
Through hole for cable
60 tooth gear
3 m (10 ft)1) shielded cable
23
Page 24
Dimension drawings
7.2
Mounting bracket
7.2 Mounting bracket
Dimensions in mm (inch)
① 114 (4.5 inch) ref.
② ø 11 mm (0.44 inch), 2 places
③ ø 25 mm (1 inch) through both sides
Milltronics RBSS
24 Operating Instructions, 07/2018, A5E45419003-AA
Page 25
A
A.1
Certificates
A.2
Technical support
Technical Support
Personal contact
Documentation
You can find certificates on the Internet at certificates
(http://www.siemens.com/processinstrumentation/certificates
If this documentation does not provide complete answers to any technical questions you may
have, contact Technical Support at:
) or on an included DVD.
● Support request (http://www.siemens.com/automation/support-request
● More information about our Technical Support is available at
Technical support (http://www.siemens.com/automation/csi/service
Internet Service & Support
In addition to our documentation, Siemens provides a comprehensive support solution at:
● Service and support (http://www.siemens.com/automation/service&support
If you have additional questions about the device, please contact your Siemens personal
contact at:
● Partner (http://www.automation.siemens.com/partner
To find the personal contact for your product, go to "All Products and Branches" and select
"Products & Services > Industrial Automation > Process Instrumentation".
You can find documentation on various products and systems at:
● Instructions and manuals
(http://www.siemens.com/processinstrumentation/documentation
)
)
)
)
)
Milltronics RBSS
Operating Instructions, 07/2018, A5E45419003-AA
25
Page 26
Certificates and support
A.2 Technical support
Milltronics RBSS
26 Operating Instructions, 07/2018, A5E45419003-AA
Loading...