FMS RMGZ400B/600B Force Measuring Roller for Tension Measurement Installation Guide
- June 3, 2024
- Fms
Table of Contents
FMS RMGZ400B/600B Force Measuring Roller for Tension Measurement
This installation manual is also available in German.
Please contact your local FMS representative.
Safety Instructions
All safety related regulations, local codes and instructions that appear in
the manual or on equipment must be observed to ensure personal safety and to
prevent damage to the equipment connected to it. If equipment is used in a
manner not specified by the manufacturer, the protection provided by the
equipment may be impaired.
Do not stress the equipment over the specification limits neither during
assembly nor operation. To do so can be potentially harmful to persons or
equipment in the event of a fault to the equipment.
Description Conditions
a) Danger of health injury or loss of life
Danger
This symbol refers to high risk for persons to get health injury or loss life.
It has to be followed strictly.
b) Risk of damage of machines
Caution
This symbol refers to information, that, if ignored, could cause heavy
mechanical damage. This warning has to be followed absolutely.
c) Note for proper function
Note
This symbol refers to an important information about proper use. If not
followed, malfunction can be the result.
List of Safety Instructions
The Force Measuring Rollers may be stressed over the specification limits
neither during assembly nor operation. The unit’s overload protection value
may not be exceeded.
The attachment points for the Force Measuring Rollers on the machine frame
must be properly designed. The bearings need to be appropriately mounted.
For correct installation and operation, follow the electrical wiring diagram
and instructions in this manual.
Product Information
Dimensions
RMGZ 400B / 600B Product Range
Nominal
Force
| Order code| Dimensions in mm and [in.]| | |
N
[lbf]
| d1| d2| d3| l1| l2| l3
60 [13.5]| RMGZ416B| | | | | |
100 [22]| RMGZ421B|
85
[3.35]|
100
[3.94]|
110
[4.33]|
6.5
[.256]|
4
[.157]|
13
[.512]
200 [45]| RMGZ422B
500 [112]| RMGZ425B| | | | | |
1000 [225]| RMGZ631B| | | | | |
2000 [450]| RMGZ632B| 110 [4.33]| 125 [4.92]| 136 [5.35]| 7.5 [.295]| 5
[.197]| 13.5 [.531]
4000 [900]| RMGZ634B| | | | | |
Options
- H14 = Right angle connector
- H16 = Temperature range up to 120°C, [248°F]
- H31= For vacuum applications
Order Code
Order Code Example:
Scope of Delivery
- Force Measuring Roller; 1 Straight Connector; Pin ø3×5 [0.118“ x 0.197“] Installation Manual
Not included:
Sheave; sensor cable; mounting brackets
Assembly
Assembly Conditions
The Force Measuring Rollers RMGZ 400B and RMGZ 600B are defined as “partly
completed machinery” according to the Directives 2006/42/EC, article 2. In
order to assure a proper functionality of the parts and guarantee the
essential health and safety requirements of operators working with it, the
following conditions for the assembly must be met:
Caution
The Measuring Rollers may be stressed over the specification limits neither
during assembly nor operation. The unit’s overload protection value may not be
exceeded.
Caution
The attachment points for the Force Measuring Rollers on the machine frame
must be properly designed. The bearings need to be appropriately mounted.
Caution
For correct installation and operation, follow the electrical wiring diagram
and instructions in this manual.
Assembly Preparations
The Force Measuring Rollers RMGZ 400B and RMGZ600B are usually mounted on a
mounting bracket which is in turn installed on the machine frame or on the
rotating base plate of a stranding machine. The built-in flange on the force
measuring roller provides M8 thread holes for easier assembly. If mounting
brackets are used, they need to have mounting holes with a spline groove (see
drawing Fig. 1, detail A).
Mounting brackets and machine must be prepared for the installation of the
force measuring rollers. The corresponding mounting holes must be drilled in
the machine frame.
Caution
If the RMGZ 400B/600B Force Measuring Rollers are used as a replacement for
their predecessor products RMGZ 400A/600A, the 4mm 0[.157“] position pin must
be replaced with the supplied pin ø3×5 [0.118“ x 0.197“].
Mounting the Force Measuring Roller on static Machine
The support surface for the mounting brackets on the machine frame must be
meticulously crafted. The brackets are mounted on the machine. The Force
Measuring Roller is screwed to the mounting holes of the mounting brackets
whereas the spline groove holds the position pin preventing the roller from
twisting out of position. Red point and position pin are aligned to each other
(see Fig. 1).Their positions depend on the direction of the resulting force.
If the force acts in the direction of the red point, the measuring amplifier
will show positive measuring values.
Red Point Alignment in a Stranding Machine
In rotating applications (e.g. in stranding machines) the force measuring
rollers are mounted such that centrifugal forces are compensated. Using FMS
RMGZ sensors this can be achieved by turning the Red Point parallel to the
rotation axis and in direction of the positive force component (refer to Fig.
2).
Caution It is of paramount importance to compensate the centrifugal forces
caused by the rotating base plate of the strander. In fast rotating machines
already a small deviation in parallelism between rotation axis and Red Point
(of e.g. 0.3°) can lead to a zero point error.
The adjustment of the Red Point and hence the quality of the sensor adjustment
as described in chapters 3.4 can be tested after offset compensation and
calibration. If the reading of an unloaded Force Measuring Roller stays at
zero (e.g. 0 N) regardless of the load cell position (e.g. at 12 o’clock or at
6 o’clock position), the red point is correctly aligned.
Electrical Connection
Signals in the Wheatstone-bridgeQ
Wiring the Force Measuring Roller to the measuring amplifier is achieved by using a 2x2x0.25mm2 [AWG 23] shielded twisted-pair cable. This cable must be installed away from power lines. The connection is done according to Fig.3. The shield needs to be connected only to the measuring amplifier.
Caution
In order to avoid ground loops and hence electrical interferences, the cable
shield needs to be connected only to the measuring amplifier. On the force
measuring side the shield must stay open.
Signal Assignment on Sensor Cable Connector
Design and Functionality
The Force Measuring Roller RMGZ 400/600 series are used to measure the tension of individual strands, wires, cables, and similar materials in stranding machines. An application specific sheave can be mounted on the rotating flange. The lifetime lubricated deep groove ball bearing is build-in. The mating parts of the ball bearing form a frictionless gap type seal for the bearing. The force sensor itself, which consists of two rings connected by a measuring body, is situated inside the stationary inner ring.
- Functional Description
A foil type strain gauge mounted in a full Wheatstone -bridge configuration measures the actual tension. Factory set overload protection devices prevent deformation of the measuring web caused by overload. The load must be applied in the middle of the bearing so that no tilting forces can act on the bearing and the measuring body.
Technical Specification
| Sensitivity | 1.8mV/V ±2% |
|---|---|
| Tolerance of sensitivity | < ±0.2% |
| Accuracy class | ±0.5% (based on F nominal) |
| Deflection | 0.1 mm; [0.004”] |
| Load rating (bearing) C dynamic | RMGZ 400B: 11.8 kN; [2652.7 lbf] |
RMGZ 600B: 21.2 kN; [4765.9 lbf]
Speed limit| RMGZ 400B: 8500 rpm RMGZ 600B: 6700 rpm
Temperature coefficient| ±0.1% / 10K
Temperature range| –10…+60°C [14…+140°F]
(Option H16: –10…+120°C [14…248°F])
Overload Protection [x Fn]| 10 times the rated nominal force
Input resistance| 350 Ω
Supply voltage| 1…12 VDC
Protection Class| IP 42
Electrical Connector| 5-pole mini connector
Sensor Material| Stainless steel
Material of Rotating Flange| Aluminium
Weight| RMGZ 400B: 0.75 kg; [1.65 lbs] RMGZ 600B: 0.9 kg; [1.98lbs]
FMS Force Measuring Systems AG
Aspstrasse 6
8154 Oberglatt (Switzerland)
Tel. +41 44 852 80 80 Fax +41 44 850 60 06 info@fms-
technology.com www.fms-
technology.com
FMS Italy Via Baranzate 67
I-20026 Novate Milanese Tel: +39 02 39487035
Fax: +39 02 39487035
fmsit@fms-technology.com
FMS USA, Inc.
2155 Stonington Ave. Suite
119
Hoffman Estates, IL 60169 USA
Tel. +1 847 519 4400
Fax +1 847 519 4401 fmsusa@fms-technology.com
FMS UK
Highfield, Atch Lench Road
Church Lench Evesham WR11 4UG, Great Britain
Tel. +44 1386 871023
Fax +44 1386 871021 fmsuk@fms-technology.com