Siemens Milltronics RBSS Bedienungsanleitung

Instruction Manual June 2008

RBSS

milltronics

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Safety Guidelines: Warning notices must be observed to ensure personal safety as well as that of

others, and to protect the product and the connected equipment. These warning notices are

accompanied by a clarification of the level of caution to be observed.

Qualified Personnel: This device/system may only be set up and operated in conjunction with this

manual. Qualified personnel are only authorized to install and operate this equipment in accordance with

established safety practices and standards.

Unit Repair and Excluded Liability:

•The user is responsible for all changes and repairs made to the device by the user or the user’s

agent.

•All new components are to be provided by Siemens Milltronics Process Instruments Inc.

•Restrict repair to faulty components only.

•Do not reuse faulty components.

Warning: This product can only function properly and safely if it is correctly transported, stored,

installed, set up, operated, and maintained.

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.

Note: Always use product in accordance with specifications.

Disclaimer of Liability

This document is available in bound version and in

electronic version. We encourage users to purchase

authorized bound manuals, or to view electronic versions

as designed and authored by Siemens Milltronics Process

Instruments Inc. Siemens Milltronics Process Instruments

Inc. will not be responsible for the contents of partial or

whole reproductions of either bound or electronic

versions.

While we have verified the contents of this

manual for agreement with the

instrumentation described, variations

remain possible. Thus we cannot

guarantee full agreement. The contents of

this manual are regularly reviewed and

corrections are included in subsequent

editions. We welcome all suggestions for

improvement.

Technical data subject to change.

MILLTRONICS®is a registered trademark of Siemens Milltronics Process Instruments Inc.

Contact SMPI Technical Publications European Authorized Representative

at the following address:

Technical Publications Siemens AG

Siemens Milltronics Process Instruments Inc. Industry Sector

1954 Technology Drive, P.O. Box 4225 76181 Karlsruhe

Peterborough, Ontario, Canada, K9J 7B1 Deutschland

Email: techpubs.smpi@siemens.com

•For a selection of Siemens Milltronics level measurement manuals, go to:

www. siemens.com/processautomation. Under Process Instrumentation, select

Level

Measurement

and then go to the manual archive listed under the product family.

•For a selection of Siemens Milltronics weighing manuals, go to:

www. siemens.com/processautomation. Under Weighing Technology, select

Continuous

Weighing Systems

and then go to the manual archive listed under the product family.

7ML19985GX63 RBSS Speed Sensor – INSTRUCTION MANUAL Page EN-1

English

Introduction

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.

The Manual

This instruction manual covers the installation, operation and maintenance of the RBSS

Speed Sensor Integrator. Belt scale instruction manuals can be downloaded from our

web site at www.siemens.com/processautomation. Go to:

https://pia.khe.siemens.com/index.asp?Nr=9881.

We always welcome questions, comments, or suggestions about manual content, design,

and accessibility. Please direct your questions or comments to

[email protected].

Note:

• 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.

Page EN-2 RBSS Speed Sensor – INSTRUCTION MANUAL 7ML19985GX63

English

RBSS Specifications

Power

• RBSS CE: 4.5 to 28 V DC, 16 mA max

• RBSS IS: 5 to 25 V DC from IS Switch Isolator

Temperature

• RBSS CE: -40 to +110 °C (-40 to +230 °F)

• RBSS IS: -25 to +100 °C (-14 to +212 °F)

Input

• shaft rotation 2 to 450 rpm, bi-directional

Output

• 60 pulses per revolution, 2 to 450 Hz, 45.8 pulses/foot (150.4 pulses/meter)

• RBSS CE: open collector sinking output, 25 mA

• RBSS IS: load current, 0 to 15 mA

Cable

• RBSS CE: 3 m (10 ft), 3 conductor 22 AWG (0.324 mm2), PVC shielded cable

300 m (1000 ft) maximum cable run

• RBSS IS: 2 m (6.5 ft), 2 conductor 26 AWG (0.129 mm2), PVC covered cable

300 m (1000 ft) maximum cable run to IS switch isolator

300 m (1000 ft) maximum cable run from IS switch isolator and integrator

Construction

• trailing arm: painted mild steel

• sensor wheel: 127 mm (5") diameter, polyurethane tread

Approvals

• RBSS CE: CE

• RBSS IS: uses CE, ATEX and CSA approved Pepperl + Fuchs

Proximity Switch and IS Switch Isolator

(See Switch and Isolator Approvals below.)

Switch and Isolator Approvals

Proximity Switch Approval Ratings (Pepperl + Fuchs #NJ0.8-5GM-N)

• 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

IS Switch Isolator Approval Ratings (Pepperl + Fuchs #KFA5-SOT2-Ex2 and #KFA6-

SOT2-Ex2)

• 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

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-fuchs.com/.

1. Based on the ATEX rating of the NAMUR slotted sensor and CSA approvals.

7ML19985GX63 RBSS Speed Sensor – INSTRUCTION MANUAL Page EN-3

English

Dimensions

RBSS

Mounting Bracket

60 tooth

gear

38 mm

(1.5")

100mm

(3.94")2)

50 mm

(1.97")3)

through hole for

cable gland

22 mm (0.88")

ø 25 mm

(

)

through both walls

ø 127 mm

(5")

610 mm

(24") 648 mm

(25.5")

3 m (10 ft)1)

shielded cable sensor

1) Cable for RBSS IS is 2 m (6.5 ft)

2) Dimension equals 102 mm (4") if manufactured in Canada

3) Dimension equals 51 mm (2") if manufactured in Canada

105 mm

(4.13")

114 mm

(4.5") ref.

5 mm

(0.19")

ø 25 mm (1") through both sides

ø 11 mm (0.44"), 2 places

51 mm

(2")

25 mm

(1")

114 mm

(4.5") 57 mm

(2.25")

29 mm

(1.13")

25 mm (1") 25 mm (1")

Page EN-4 RBSS Speed Sensor – INSTRUCTION MANUAL 7ML19985GX63

English

Installation

Location

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.

RBSS without mounting bracket

The standard RBSS mounting attaches to the conveyor stringers via a customer-supplied

1" cross bar, cut and fastened to the stringers.

RBSS with mounting bracket

The RBSS speed sensor attaches to a customer-supplied structural cross member via a

pivot and bracket assembly.

stringer

belt

wheel

24 mm (1") washers, 2 places

(customer-supplied)

24 mm (1") diameter

cross bar (customer-

supplied)

stringer

cable

return belt

travel

RBSS

cross member (customer-supplied)

pin clip

7ML19985GX63 RBSS Speed Sensor – INSTRUCTION MANUAL Page EN-5

English

Installation Steps

RBSS without mounting bracket

1. Measure the distance between the inside of the conveyor stringers, and then cut

the 24 mm (1”) cross bar to the measured length.

2. Orient the Return Belt Speed Sensor as shown in the “RBSS without mounting

bracket” on page 4.

3. Slide the cross bar through the hole on the end of the Return Belt Speed Sensor, and

then slide one 24 mm (1”) 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”) 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.

RBSS with mounting bracket

1. Position the RBSS mounting bracket against a structural cross member so the

sensor wheel rides in the middle of the return belt. See the “RBSS with mounting

bracket” on page 4.

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.

stringer

tack-weld washers (2 places)

cross bar

RBSS

return belt

Page EN-6 RBSS Speed Sensor – INSTRUCTION MANUAL 7ML19985GX63

English

Interconnection

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.

Connection

RBSS CE

RBSS IS

Note: All wiring must be done in conjunction with approved conduit, boxes, and

fittings and to procedures in accordance with all governing regulations.

RBSS Integrator

red excitation

white signal

black common

RBSS IS IS Switch Isolator

Terminal Integrator

brown 1

blue 3

7 speed signal input

8excitation of load cells

7ML19985GX63 RBSS Speed Sensor – INSTRUCTION MANUAL Page EN-7

English

Maintenance

Inspection

• 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.

Unit Repair and Excluded Liability

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.

Page EN-8 RBSS Speed Sensor – INSTRUCTION MANUAL 7ML19985GX63

English

Wheel and Bearing Repair

Case 1 - for tube housings with through holes for bolt and bushings of 22 mm (7/8")

Parts required:

•1– wheel assembly, complete with sealed bearings and 60 tooth gear

•2– bushings

•1– M12 washer (optional - See * on diagram below.)

•2– stepped washers

•1– hex head bolt M12x1.75, 120 mm long

•1– locking hex nut M12x1.75

Case 2 - for tube housings with through holes for bolt of 13 mm (½")

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 * on diagram below.)

•1– hex head bolt M12x1.75, 120 mm long

•1– locking nut M12x1.75

Note: Spare parts kit 7MH7723-1FX contains parts for both Case 1 and Case 2.

Extra M12 washers and stepped washers are provided.

M12x1.75

locking

hex nut3)

hex head bolt

M12 flat washer (2)2)

stepped washer (2)1)

60 tooth gear

wheel assembly

bushing (2)

* optional M12 washer:

- required if housing is imperial

4" x 4" x 3/16" square tubing

- not required if housing is

metric 100 mm x 100 mm x 5 mm

square tubing

22 mm (7/8") hole1)

13 mm (½") hole2)

Front view Side view

1) Case 1

2) Case 2

3) Tor

ue to 34 Nm (25 ft.lbs)

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