Omega | DFG-RS5 | Owner Manual | Omega DFG-RS5 Owner Manual

Omega DFG-RS5 Owner Manual
Model DFG-RS5
Digital Force / Torque Indicator
Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
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Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
Thank you…
Thank you for purchasing an Omega Model DFG-RS5 digital force / torque indicator, designed for use
with interchangeable remote force and torque sensors.
With proper usage, we are confident that you will get many years of great service with this product.
Omega instruments are ruggedly built for many years of service in laboratory and industrial environments.
This User’s Guide provides setup, safety, and operation instructions. Dimensions and specifications are
also provided. For additional information or answers to your questions, please do not hesitate to contact
us. Our technical support and engineering teams are eager to assist you.
Before use, each person who is to use a Model DFG-RS5 indicator should be fully trained in
appropriate operation and safety procedures.
TABLE OF CONTENTS
OVERVIEW .........................................................3
POWER ...............................................................5
SETUP ................................................................6
HOME SCREEN AND CONTROLS ...................8
DIGITAL FILTERS ............................................11
SET POINTS .....................................................11
OPERATING MODES.......................................13
DATA MEMORY AND STATISTICS ................15
COMMUNICATIONS ........................................17
CALIBRATION .................................................22
PASSWORDS ...................................................26
OTHER SETTINGS...........................................28
SPECIFICATIONS ............................................31
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Model DFG-RS5 Digital Force / Torque Indicator
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1 OVERVIEW
1.1 List of included items
Qty.
1
1
1
1
1
1
Part No.
12-1049
08-1022
08-1026
09-1165
-
Description
Carrying Case
AC adapter body with US, EU, or UK prong
Battery (inside the indicator)
Certificate of conformance
USB cable
Resource CD (USB driver, user’s guide)
1.2 General Overview
The DFG-RS5 is a universal indicator designed for displaying measurements from interchangeable
Omega Series RLC and RTQ sensors. These sensors can be handheld or mounted to a fixture or test
stand for more sophisticated testing requirements.
These sensors may be used with the DFG-RS5 or DFG-RS3 indicators. They may be disconnected from
one indicator and connected to another without the need for re-calibration or re-configuration. All such
data is saved within a PCB located inside the smart connector.
The model number, serial number, and capacity of the sensor are identified in the rectangular label
located on the sensor connector. The model and serial numbers are also identified in the Information
screen of the indicator.
1.3 Accuracy and Resolution
Indicator accuracy must be combined with sensor accuracy to determine the total accuracy of the system.
Since sensors may be used with either the DFG-RS5 or DFG-RS3 indicators, the accuracy of the
indicator being used must be identified and taken into account, as follows:
Indicator Model
DFG-RS5
DFG-RS3
Accuracy
±0.1% of full scale
±0.2% of full scale
The total system accuracy can be calculated by adding the sensor accuracy and indicator accuracy.
Refer to the following examples:
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Example 1
Model RLC01-100 sensor with Model DFG-RS5 Indicator
RLC01-100
±0.15% of full scale
+
DFG-RS5
±0.1% of full scale
=
Total
±0.25% of full scale
This translates into a fixed error of up to:
0.25% x 100 lbF = 0.25 lbF
Example 2
Model RTQ-50Z sensor with Model DFG-RS3 Indicator
RTQ50-50Z
±0.35% of full scale
+
DFG-RS3
±0.2% of full scale
=
Total
±0.55% of full scale
This translates into a fixed error of up to:
0.55% x 50 ozFin = 0.275 ozFin
Because accuracy is defined as a percentage of full scale, the fixed error is possible anywhere on the
scale from 0 to the capacity. As such, this value represents an increasingly large error as percentage of
reading towards the low end of the scale. It is, therefore, recommended that a sensor is selected with
capacity as close as possible to the expected load.
The resolution may be different for some sensors depending on which indicator is used. For example, a
Series RLC01 force sensor will display finer resolution when connected to a DFG-RS5 indicator than
when connected to a DFG-RS3 indicator. Resolution information is shown in the sensors’ user’s guide.
1.4 Safety / Proper Usage
Read through the following safety instructions thoroughly before using the DFG-RS5 with a sensor:
1. Note the sensor’s capacity before use and ensure that the capacity is not exceeded. Producing a
load greater than the indicated safe overload value can damage the sensor. An overload can
occur whether the sensor’s indicator is powered on or off.
2. In order to extend the life of the sensor, avoid repetitive shock and impact loading.
3. When moving the sensor to another location, never lift from the cable or strain relief. This can
cause damage to the sensor. Always lift the sensor housing itself.
4. Always ensure that load is applied axially with respect to the sensor.
5. Ensure that the sensor is kept away from water or any other electrically conductive liquids at all
times.
6. The sensor and indicator should be serviced by a trained technician only. AC power must be
disconnected and the indicator must be powered off before the housing is opened.
7. Always consider the characteristics of the sample being tested before initiating a test. A risk
assessment should be carried out beforehand to ensure that all safety measures have been
addressed and implemented.
8. Typical materials able to be tested include many manufactured items, such as springs, electronic
components, fasteners, caps, films, mechanical assemblies, and many others. Items that should
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Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
not be used with the sensor include potentially flammable substances or products, items that can
shatter in an unsafe manner, and any other components that can present an exceedingly
hazardous situation when acted upon by a force. Always wear eye and face protection when
testing, especially in aforementioned hazardous cases. Extra bodily protection should be worn if a
destructive failure of a test sample is possible.
9. In aforementioned hazardous situations, it is strongly recommended that a machine guarding
system be employed to protect the operator and others in the vicinity from shards or debris.
10. Sensors have threaded holes or chucks, designed for the mounting of grips, fixtures, or
attachments. If any such accessories are used, ensure they are mounted firmly to prevent a
potential safety risk to the operator and others in the vicinity. If using an accessory from a supplier
other than Omega, ensure that it is constructed of suitably rugged materials and components.
Similar precautions should be taken when mounting the sensor to a test stand, work bench, or
other piece of equipment.
2 POWER
The DFG-RS5 is powered either by an 8.4V NiMH rechargeable battery or by an AC adapter. Since these
batteries are subject to self discharge, it may be necessary to recharge the unit after a prolonged period
of storage. Plug the accompanying charger into the AC outlet and insert the charger plug into the
receptacle on the indicator (refer to the illustration below). The battery will fully charge in approximately 8
hours.
USB connector
Power input jack
Serial connector
Caution!
Do not use chargers or batteries other than supplied or instrument damage may occur.
If the AC adapter is plugged in, an icon appears in the lower left corner of the display, as follows:
If the AC adapter is not plugged in, battery power drainage is denoted in a five-step process:
1. When battery life is greater than 75%, the following indicator is present:
2. When battery life is between 50% and 75%, the following indicator is present:
3. When battery life is between 25% and 50%, the following indicator is present:
4. When battery life is less than 25%, the following indicator is present:
5. When battery life drops to approximately 2%, the indicator from step 4 will be flashing.
Several minutes after (timing depends on usage and whether the backlight is turned on or
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Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
off), a message appears, “BATTERY VOLTAGE TOO LOW. POWERING OFF”. A 4-tone
audio indicator will sound and the indicator will power off.
The indicator can be configured to automatically power off following a period of inactivity. Refer to the
Other Settings section for details.
If battery replacement is necessary, the battery may be accessed by loosening the two captive screws in
the rear half of the housing and separating the two halves of the housing.
3 SETUP
3.1 Connecting a sensor
Insert the connector into the receptacle in the indicator, as shown in Fig. 3.1 below. When fully inserted,
the connector will lock into place with a “click”.
Fig. 3.1
Appropriate orientation of the connector.
To release the connector, press both buttons on either side of the indicator housing to release the sensor,
as shown in Fig. 3.2 below. Pull the connector completely out of the indicator by holding the curved
aluminum section. DO NOT pull on the cable or strain relief.
Fig. 3.2
Press both buttons on either side of the indicator housing to release the connector.
3.2 Sensor connector orientation
In order to accommodate a variety of testing requirements, the orientation of the connector may be set up
in either of the two positions shown below. To change the orientation, loosen the two captive screws on
the back side of the housing, separate the two housing halves, rotate one half 180 degrees, and
reassemble. Contact between the two halves is made by the spring pins and contact pads on the printed
circuit boards.
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Model DFG-RS5 Digital Force / Torque Indicator
Sensor connector
oriented up
User’s Guide
Sensor connector
oriented down
3.3 Mounting to a plate
The DFG-RS5 can be mounted to a plate with four thumb screws fastened into the appropriate holes in
the rear half of the housing. Refer to the Dimensions section for detailed hole information and locations.
3.4 Installing the USB driver
If communicating via USB, install the USB driver provided on the Resource CD.
Caution!
Install the USB driver before physically connecting the indicator to a PC with the USB cable.
Further instructions for configuring and using the indicator’s outputs are provided in the Communications
and Outputs section.
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4 HOME SCREEN AND CONTROLS
4.1 Home Screen
1
11
2
10
3
9
8
4
7
No.
1
Name
Measurement
direction
indicator
2
Peaks
3
Primary reading
4
Load bar
5
Units
6
5
Description
– indicates compression direction (for force sensors)
– indicates tension direction (for force sensors)
– indicates clockwise direction (for torque sensors)
– indicates counter-clockwise direction (for torque sensors)
These indicators are used throughout the display and menu.
The maximum measured compression/tension or clockwise/counter-clockwise
readings. These readings are reset by pressing ZERO or by powering the
indicator off and on.
The current displayed load reading. See Operating Modes section for
details. If a sensor is not plugged in, this value will be replaced by a message,
as follows: SENSOR NOT CONNECTED
Analog indicator to help identify when an overload condition is imminent. The
bar increases either to the right or to the left from the midpoint of the graph.
Increasing to the right indicates compression or clockwise load, increasing to
the left indicates tension or counter-clockwise load. If set points are enabled,
triangular markers are displayed for visual convenience. This indicator reflects
the actual load, which may not correspond to the primary reading (depends
on operating mode). The ZERO key does not reset the load bar. See
Operating Modes section for details.
The current measurement unit. Abbreviations are as follows:
Force units:
lbF – Pound-force
ozF – Ounce-force
kgF – Kilogram-force
gF – Gram-force
N – Newton
kN – Kilonewton
mN – Millinewton
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Model DFG-RS5 Digital Force / Torque Indicator
6
Mode
7
Number of stored
data points
Battery / AC
adapter indicator
Automatic data
output indicator
8
9
10
High / low limit
indicators
11
Set points
User’s Guide
Torque units:
lbFft – Pound-foot
lbFin – Pound-inch
ozFin – Ounce-inch
kgFm – Kilogram-meter
kgFmm – Kilogram-millimeter
gFcm – Gram-centimeter
Nm – Newton-meter
Ncm – Newton-centimeter
Nmm – Newton-millimeter
Note: not all sensor models display all the above units. Refer to the capacity /
resolution table for the respective sensor series for details.
The current measurement mode. Abbreviations are as follows:
RT – Real Time
PC – Peak Compression (for force sensors)
PT – Peak Tension (for force sensors)
PCW – Peak Clockwise (for torque sensors)
PCCW – Peak Counter-clockwise (for torque sensors)
A – Average Mode
ET – External Trigger Mode
See Operating Modes section for details about each of these modes
The number of stored data points in memory, up to 1,000. Displayed only if
Memory Storage is enabled for the DATA key.
Either the AC adapter icon or battery power icon will be shown, depending on
power conditions. Refer to the Power section for details.
If Auto Output has been enabled under Serial / USB Settings, this indicator
is displayed. When automatic data output is occurring, the icon becomes
animated. See Communications section for details.
Correspond to the programmed set points. Indicator definitions are as follows:
– the displayed value is greater than the upper load limit
– the displayed value is between the load limits
– the displayed value is less than the lower load limit
The programmed load limit values. Typically used for pass/fail type testing.
One, two, or no indicators may be present, depending on the configuration
shown in the Set Points menu item.
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4.2 Controls
Primary
Label
ZERO
MENU
MODE
DATA
UNITS
CLEAR
Primary Function
Powers the indicator on and off.
Press briefly to power on, press and
hold to power off. Active only when
the home screen is displayed.
Zeroes the primary reading and
peaks.
Enters the main menu.
Toggles between measurement
modes.
Stores a value to memory, transmits
the current reading to an external
device, and/or initiates automatic
data output, depending on setup.
Toggles between measurement
units.
Zeroes the peak readings, but
retains the primary reading.
Secondary
Label
ENTER
(UP)
ESCAPE
(DOWN)
DELETE
DIRECTION
N/A
Secondary Function
Various uses, as described in the
following sections.
Navigates up through the menu and
sub-menus.
Reverts one step backwards through
the menu hierarchy.
Navigates down through the menu
and sub-menus.
Enables and disables Delete mode
while viewing stored data.
Toggles between tension and
compression (or clockwise and
counter-clockwise) directions while
configuring set points and other menu
functions.
N/A
4.3 Menu navigation basics
Most of the indicator’s various functions and parameters are configured through the main menu. To
access the menu press MENU. Use the UP and DOWN keys to scroll through the items. The current
selection is denoted with clear text over a dark background. Press ENTER to select a menu item, then
use UP and DOWN again to scroll through the sub-menus. Press ENTER again to select the sub-menu
item.
For parameters that may be either selected or deselected, press ENTER to toggle between selecting and
deselecting. An asterisk (*) to the left of the parameter label is used to indicate when the parameter has
been selected.
For parameters requiring the input of a numerical value, use the UP and DOWN keys to increment or
decrement the value. Press and hold either key to auto-increment at a gradually increasing rate. When
the desired value has been reached, press ENTER to save the change and revert back to the sub-menu
item, or press ESCAPE to revert back to the sub-menu item without saving. Press ESCAPE to revert one
step back in the menu hierarchy until back into normal operating mode.
Refer to the following sections for details about setting up particular functions and parameters.
Note: As described above, the smart connector retains all configuration and calibration data for the
sensor, which includes menu settings. As such, a sensor must be connected in order for menu changes
to be saved with that particular sensor. If a sensor is not connected and the MENU key is pressed, it is
possible to browse through the menu parameters and make changes, but changes will not be saved.
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5 DIGITAL FILTERS
Digital filters are provided to help smooth out the readings in situations where there is mechanical
interference in the work area or test sample. These filters utilize the moving average technique in which
consecutive readings are pushed through a buffer and the displayed reading is the average of the buffer
contents. By varying the length of the buffer, a variable smoothing effect can be achieved. The selection
of 1 will disable the filter since the average of a single value is the value itself.
To access digital filter settings, select Filters from the menu. The display appears as follows:
DIGITAL FILTERS
(1 = Fastest)
Current Reading
1
Displayed Reading
1
Two filters are available:
Current Reading – Applies to the peak capture rate of the instrument.
Displayed Reading – Applies to the primary reading on the display.
Available settings: 1,2,4,8,16,32,64,128,256,512,1024. It is recommended to keep the current reading
filter at its lowest value for best performance, and the displayed reading filter at its highest value for best
stability.
6 SET POINTS
6.1 General Information
Set points are useful for tolerance checking (pass/fail), triggering an external device such as a motorized
test stand, or alarm indication in process control applications. Two limits, high and low, are specified and
stored in the non-volatile memory of the instrument and the primary reading is compared to these limits.
The results of the comparisons are indicated through the three outputs provided on the 15-pin connector,
thus providing “under”, “in range”, and “over” signaling. These outputs can be connected to indicators,
buzzers, or relays as required for the application.
6.2 Configuration
To configure set points, select Set Points from the menu. The screen appears as follows:
SET POINTS
Upper Disabled
* Upper Enabled
5.000
Lower Disabled
* Lower Enabled
3.500
Either one, two, or none of the set points may be enabled. To toggle between the tension and
compression (or clockwise and counter-clockwise) directions, press the DIRECTION key.
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Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
If two set points have been enabled, they are displayed in the upper left corner of the display. If only one
set point has been enabled, the word “OFF” appears in place of the value. If no set points have been
enabled, the upper left corner of the display will be blank.
When set points are enabled, the following indicators are shown to the left of the primary reading:
– the displayed value is greater than the upper
load limit (NO GO HIGH)
– the displayed value is between the limits (GO)
– the displayed value is less than the lower load
limit (NO GO LOW)
Note: Set point indicators and outputs reference the displayed reading, not necessarily the current live
load.
6.3 Set Point Outputs Schematic Diagram
6.4 Using Set Points to Control an Omega MTS300 Test Stand
When using set points to stop/cycle an MTS300
test stand, the upper and lower set points must
be set to opposite measuring directions. Both
set points must be set, even if the intended
application is to stop/cycle at only one of the set
points. The opposite set point should be a value
sufficiently large that it does not get triggered
during the course of the test.
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7 OPERATING MODES
Caution!
In any operating mode, if the capacity of the instrument has been exceeded by more than 110%,
the display will show “OVER” to indicate an overload. A continuous audible tone will be sounded
until the MENU key has been pressed or the load has been reduced to a safe level.
Five operating modes are possible with the DFG-RS5 indicator. To cycle between the modes, press
MODE while in the home screen.
7.1 Real time (RT)
The primary reading corresponds to the live measured reading.
7.2 Peak Compression (PC) / Peak Clockwise (PCW) - for force / torque sensors, respectively
The primary reading corresponds to the peak compression or clockwise reading observed. If the actual
load decreases from the peak value, the peak will still be retained in the primary reading area of the
display. Pressing ZERO will reset the value.
7.3 Peak Tension (PT) / Peak Counter-clockwise (PCCW) – for force / torque sensors, respectively
Same as above, but for tension / counter-clockwise readings.
7.4 Average Mode (AVG)
Average mode is used to obtain an average load reading over a specified period of time. Applications
include measurement of peel force, bearing torque, muscle strength, frictional force, and other tests
requiring time-averaged readings.
Before the parameters of Average Mode can be configured, it must be enabled. To do so, select Average
Mode from the menu, scroll to Enable and press ENTER. The display appears as follows:
AVERAGE MODE
Disabled
* Enabled
+ Settings
Then, scroll to Settings, and press ENTER to configure the parameters. The parameters are as follows:
AVERAGE MODE SETTINGS
Initial Delay
0.0
Averaging Time
5.5
Trigger Load
1.200
Parameter
Initial Delay
Averaging Time
Trigger Load
Description
The time delay, in seconds, before the averaging sequence commences.
The time duration, in seconds, of the averaging sequence.
The minimum load required to start the averaging sequence. Toggle between
compression and tension (or clockwise and counter-clockwise) directions by pressing
the DIRECTION key. Initial delay follows the trigger load.
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After the parameters have been configured and the menu has been exited, press MODE until AVG is
displayed. Then press ZERO. Average mode is now armed, and the averaging sequence will commence
when the trigger load has occurred. The current status of the average sequence is displayed below the
primary reading, as follows:
Step
1
2
3
Status Abbreviation
TRIG WAIT
INIT DLY
AVERAGING
4
AVRG DONE
Description
The trigger load has not yet occurred.
The initial delay is currently taking place.
The indicator is collecting readings. The status will be flashing until
averaging has been completed.
Averaging has been completed. The average load is displayed in the
primary reading.
At the completion of the averaging sequence, the peak values are retained until ZERO is pressed.
Another averaging sequence may be started after ZERO has been pressed. To exit Average mode, press
MODE and select the desired measuring mode.
7.5 External Trigger (ET)
This mode of operation is useful for measuring electrical contact activation load as well as
synchronization of multiple instruments for a “snapshot” view of applied loads. It is possible to capture the
reading with a normally open contact (high to low transition of the trigger signal) or a normally closed
contact (low to high transition).
Before the parameters of External Trigger Mode can be configured, it must be enabled. To do so, enter
the main menu, select External Trigger, scroll to one of the four available options and press ENTER.
The options are as follows:
EXTERNAL TRIGGER
* Disabled
Momentary Hi->Lo
Momentary Lo->Hi
Maintained High
Maintained Low
Option
Momentary High  Low
Momentary Low  High
Maintained High
Maintained Low
Description
The display will freeze the captured reading until ZERO is pressed. Applies
to a high to low transition of the trigger signal.
The display will freeze the captured reading until ZERO is pressed. Applies
to a low to high transition of the trigger signal.
The display will show the captured reading only for as long as a high signal
is maintained.
The display will show the captured reading only for as long as a low signal
is maintained.
After the selection has been made and the menu has been exited, press MODE until ET is displayed.
External Trigger mode is now armed. Refer to the pin diagram in the Communications section for
connection information. To exit External Trigger mode, press MODE and select the desired measuring
mode.
Note: As long as external trigger has been enabled, it is still active even if the indicator is in Real Time
mode. After the display freezes, any programmed set points will be active. However, if the indicator is in
External Trigger mode, any programmed set points will be inactive.
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7.6 External Trigger Schematic
+3.3V
BAT54SLT1G
22k
SWITCH UNDER TEST
(NO OR NC)
330 Ohm
14
TO MICROPROCESSOR
IN
0.1 uF
1
GND
GND
USER - SUPPLIED
GAUGE
8 DATA MEMORY AND STATISTICS
The DFG-RS5 has a storage capacity of 1,000 data points. Readings may be stored, viewed, and output
to an external device. Individual, or all, data points may be deleted. Statistics are calculated for the data
presently in memory.
To enable memory storage, select DATA Key from the menu, then scroll to Memory Storage and press
ENTER. Then exit the menu. In the home screen, the data record number 0000 appears below the
primary reading. Press DATA at any time to save the displayed reading. The record number will
increment each time DATA is pressed. If DATA is pressed when memory is full the message “MEMORY
FULL” will be flashed at the bottom of the display and a double audio tone will be sounded.
To view, edit, and output stored readings and statistics, select Memory from the menu. The screen
appears as follows:
MEMORY
View Data
View Statistics
Output Data
Output Statistics
Output Data & Stats
Clear All Data
8.1 View Data
All the saved data points may be viewed. The record number is displayed, along with the corresponding
value and presently set unit of measurement. Any readings may be deleted individually. To do so, scroll
to the desired reading and press DELETE. The letter “D” appears to the left of the record number,
indicating that the indicator is in Delete mode, as follows:
0001
0002
0003
0004
D 0005
0006
0007
8.450 Nm
9.220 Nm
8.445 Nm
8.895 Nm
9.095 Nm
8.990 Nm
9.045 Nm
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Model DFG-RS5 Digital Force / Torque Indicator
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Press ENTER to delete the value. To exit Delete mode, press DELETE again. Any number of readings
may be individually deleted, however, all readings may also be cleared simultaneously. Refer to the Clear
All Data section for details.
8.2 Statistics
Statistical calculations are performed for the saved values. Calculations include number of readings,
minimum, maximum, mean, and standard deviation.
8.3 Output Data
Press ENTER to output data to an external device. The display will show, “SENDING DATA…”, then
“DATA SENT”. If there was a problem with communication, the display will show, “DATA NOT SENT”.
Saved data can be downloaded by some Omega data collection programs. Refer to their respective
user’s guides for details.
8.4 Output Statistics
Press ENTER to output statistics to an external device. The display will show, “SENDING STATS…”, then
“STATS SENT”. If there was a problem with communication, the display will show, “STATS NOT SENT”.
8.5 Output Data & Stats
Press ENTER to output data and statistics to an external device. The display will show, “SENDING
DATA”, then “SENDING STATS…”, then “DATA SENT”, then “STATS SENT”. If there was a problem with
communication, the display will show, “DATA NOT SENT” and/or “STATS NOT SENT”.
8.6 Clear All Data
Press ENTER to clear all data from the memory. A prompt will be shown, “CLEAR ALL DATA?”. Select
Yes to clear all the data, or No to return to the sub-menu.
Shortcut for clearing all data: In the main menu, highlight Memory and press DELETE. The same
prompt will be shown as above.
For output of data and/or statistics, RS-232 or USB output must be enabled. Data formatting is
<CR><LF> following each value. Units can be either included or excluded. Output of data via the Mitutoyo
output is possible, however, output of statistics is not. Refer to the Communications section for details.
Note: Data is not retained while the gauge is powered off. However, the gauge protects against
accidental or automatic power-off. If manually powering the instrument off, or if the inactivity time limit for
the Automatic Shutoff function has been reached, the following warning message appears:
*** WARNING ***
DATA IN MEMORY
WILL BE LOST
CANCEL
POWER OFF
If no option is selected, this screen will be displayed indefinitely, or until battery power has been depleted.
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9 COMMUNICATIONS AND OUTPUTS
Communication with the DFG-RS5 indicator is achieved through the micro USB or 15-pin serial ports
located at the bottom of the instrument, as shown in the illustration in the Power section. Communication
is possible only when the indicator is in the main operating screen (i.e. not in a menu or configuration
area).
9.1 Serial / USB
To set up RS-232 and USB communication, select Serial/USB Settings from the menu. The screen
appears as follows:
SERIAL/USB SETTINGS
* RS232 Selected
USB Selected
+ Baud Rate
+ Data Format
+ Auto Output
Select either RS-232 or USB input (output is always simultaneous through both the USB and RS-232
ports). RS-232 must be selected when communicating through an Omega test stand controller. When
communicating from the indicator directly to a PC or data collector, either RS-232 or USB can be selected
as required. Press DATA to transmit individual data points or to commence an automatic output
sequence (see Automatic Output sub-section for details). Single point or continuous data may also be
requested via ASCII commands from an external device (see Command Set sub-section for details).
Communication settings are permanently set to the following:
Data Bits:
Stop Bits:
Parity:
8
1
None
Other settings are configured as follows:
9.1.1 Baud Rate
Select the baud rate as required for the application. It must be set to the same value as the receiving
device. When communicating with an Omega test stand controller, the baud rate must be set to 9,600.
9.1.2 Data Format
Select the desired data format. The screen appears as follows:
*
DATA FORMAT
Numeric + Units
Numeric Only
Invert Polarity
Omit Polarity
Selection
Numeric + Units
Description
Output format includes the value and unit of measure. Compression/clockwise
values have positive polarity, tension/counter-clockwise values have negative
polarity.
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Model DFG-RS5 Digital Force / Torque Indicator
Numeric Only
Invert Polarity
Omit Polarity
User’s Guide
Output format includes the value only. Polarity same as above.
Compression/clockwise values have negative polarity, tension/counter-clockwise
values have positive polarity. May be selected in addition to the Numeric + Units /
Numeric Only selection.
Both directions are formatted with positive polarity. May be selected in addition to
the Numeric + Units / Numeric Only selection.
9.1.3 Automatic Output
The indicator has the ability to output data continuously via RS-232 or USB. To enable automatic output,
select Auto Output from the Serial/USB Settings sub-menu. The screen appears as follows:
AUTO OUTPUT
*
Disabled
Enabled
Outputs per Sec.
10
Select Enabled to activate automatic output. The number of outputs per second can be set to 1, 2, 5, 10,
25, 50, 125, or 250. The capabilities of the receiving device should be considered when selecting the data
output rate.
After the settings have been saved, revert to the home screen. An icon appears in the lower left corner of
This indicates that automatic data output has been armed. Automatic output
the display, as follows:
of data may be initiated by pressing DATA or by sending the appropriate ASCII command from an
external device (see Command Set sub-section for details). The icon will become animated, signaling
that automatic output is occurring. Press DATA again to end the data transmission.
9.2 Mitutoyo BCD settings
This output is useful for connection to data collectors, printers, multiplexers, or any other device capable
of accepting Mitutoyo BCD data. Individual data points may be transmitted by pressing DATA or by
requesting it from the Mitutoyo communication device (if available). To enable Mitutoyo output, select the
desired format – either with polarity or without polarity. The screen appears as follows:
MITUTOYO BCD
* Disabled
Enabled
* Without Polarity
With Polarity
9.3 Analog Output
This output can be used for chart recorders, oscilloscopes, data acquisition systems, or any other
compatible devices with analog inputs. The output produces ±1 volt at full scale of the sensor. The
polarity of the signal is positive for compression/clockwise and negative for tension/counter-clockwise.
9.4 DATA Key Functions
The DATA key can be configured to perform several functions. To configure the DATA key, select DATA
Key from the menu. The display appears as follows:
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Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
DATA KEY
*
RS232/USB Output
Mitutoyo Output
Memory Storage
Three options are available:
Selection
RS232/USB Output
Mitutoyo Output
Memory Storage
Function when pressing DATA
Outputs data via the serial and USB ports
Outputs data via Mitutoyo (Digimatic) through the serial port
Stores a reading to memory (refer to the Memory section for details)
Any combination of the above functions may be selected.
9.5 I/O Connector Pin Diagram (female)
Pin No.
1
2*
3
4
5
6
7*
8
9
10
11 **
12 **
13 **
14
15
Description
Signal Ground
Tension / Counter-clockwise Overload *
RS-232 Receive
RS-232 Transmit
+12V DC
Analog Output
Compression / Clockwise Overload *
Mitutoyo Clock
Output Bit 2
Mitutoyo Data
Output Bit 0
Mitutoyo Request
Input Bit 3
Set Point Pin 1 **
Set Point Pin 2 **
Set Point Pin 3 **
External Trigger
Mitutoyo Ready
Output Bit 1
Input / Output
--Output
Input
Output
Output
Output
Output
Output
Output
Input
Output
Output
Output
Input
Output
* Maximum voltage: 40V.
** The output assignments depend on several factors described in the table below. Output functions
always reference the primary reading on the display, regardless of the current mode.
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Model DFG-RS5 Digital Force / Torque Indicator
Load
User’s Guide
Pin 11
Pin 12
Pin 13
Off
Off
On
Off
On
Off
On
Off
Off
Off
On
Off
On
Off
Off
Off
On
Off
On
Off
Off
Off
On
Off
Upper and Lower Set Points are C / CW
Greater than or equal to upper set point
Between upper and lower set points
Less than or equal to lower set point
On
Off
Off
Upper and Lower Set Points are T / CCW
Greater than or equal to upper set point
Between upper and lower set points
Less than or equal to lower set point
Off
Off
On
Upper Set Point is C / CW, Lower Set Point is T / CCW
Greater than or equal to upper set point, in C / CW
Off
Between upper and lower set points
Off
Greater than or equal to lower set point, in T / CCW
On
Upper Set Point is T / CCW, Lower Set Point is C / CW
Greater than or equal to upper set point, in T / CCW
Off
Between upper and lower set points
Off
Greater than or equal to lower set point, in C / CW
On
C = compression, T = tension, CW = clockwise, CCW = counter-clockwise
9.6 Command Set / Gauge Control Language 2 (GCL2)
The DFG-RS5 may be controlled by an external device through the RS-232 or USB channel. The
following is a list of supported commands and their explanations. All commands must be terminated with
a Carriage Return character or with a Carriage Return/Line Feed combination. The indicator responses
are always terminated with a Carriage Return/Line Feed.
Request Readings
?
Request the displayed reading (dependant on operating mode)
?C
Request the current (real time) reading
?PT
Request the peak tension reading
?PC
Request the peak compression reading
?CW
Request the peak clockwise reading
?CCW
Request the peak counter-clockwise reading
?ET
Request the reading obtained during the External trigger mode
?A
Request the average reading obtained during the Average mode
Units (available units depend on the sensor used)
LB
Switch unit to pound-force
OZ
Switch unit to ounce-force
KG
Switch unit to kilogram-force
G
Switch unit to gram-force
N
Switch unit to Newton
MN
Switch unit to milli-Newton
KN
Switch unit to kilo-Newton
LBFT
Switch unit to pound-foot
LBIN
Switch unit to pound-inch
OZIN
Switch unit to ounce-inch
KGM
Switch unit to kilogram-meter
KGMM
Switch unit to kilogram-millimeter
GCM
Switch unit to gram-centimeter
NM
Switch unit to Newton-meter
NCM
Switch unit to Newton-centimeter
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Model DFG-RS5 Digital Force / Torque Indicator
NMM
User’s Guide
Switch unit to Newton-millimeter
Basic Functions (available measurement directions depend on the sensor used)
CUR
Current mode (real time mode) for primary reading
PT
Peak Tension mode for primary reading
PC
Peak Compression mode for primary reading
PCW
Peak Clockwise mode for primary reading
PCCW
Peak Counter-clockwise mode for primary reading
CLR
Clear peaks
Z
Zero display and perform the CLR function
Filters
FLTCn
FLTPn
Digital filter for displayed readings
Digital filter for current readings
n= 0-10, filter = 2n, ex: n=0= no filter, n=10=1024 samples averaged
Memory & Statistics
MEM
Transmit all stored readings
STA
Transmit statistics
Set Points
SPHD
SPLD
SPHn
SPLn
Disable high set point
Disable low set point
High set point. n=value (+ for C/CW, - for T/CCW)
Low set point. n=value (+ for C/CW, - for T/CCW)
Note: High set point value must be greater than low set point value if both values
are set to the same polarity.
USB/RS-232 Communication
FULL
USB/RS-232 transmission with units
NUM
USB/RS-232 transmission without units (only numeric values)
AOUTn
Auto-transmit n times per second n=1,2,5,10,25,50,125,250. 0=disabled
Note: n = 1 = yields 50 times per second.
IPOLn
Invert polarity of output. n=1=invert polarity. n=0=normal (default)
Note: Normal polarity is positive for compression and negative for tension.
OPOLn
Omit polarity of output. n=1=omit polarity. n=0=include polarity (default)
Note: The “+” sign is always omitted. A “–“ sign is sent when polarity is enabled.
Mitutoyo Communication
MIT
Enable Mitutoyo output
MITD
Disable Mitutoyo output
POL
Mitutoyo output with polarity (+ for compression, - for tension)
NPOL
Mitutoyo output without polarity (absolute value)
PM
Print/send data to a Mitutoyo-compatible device
Averaging
A
AD
AM
ATn
DELn
TRFn
Enable Average mode
Disable Average mode
Select Average mode (if enabled) for primary reading
Average time. n=0.1-300.0 seconds
Initial delay. n=0.1-300.0 seconds
Trigger force. n=value (+ for compression/clockwise, - for tension/counterclockwise)
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Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
External Trigger
ETH
Enable high level-triggered External trigger mode
ETL
Enable low level-triggered External trigger mode
ETHL
Enable reading captured on a high to low transition
ETLH
Enable reading captured on a low to high transition
ETD
Disable External trigger mode
Input / Output Bits
Sn
Set output bit (open drain, pull to ground). n=0,1,2
Cn
Clear output bit. n=0,1,2
Rn
Read current status of output bit or level of input pin. n=0,1,2,3
Personality
RN
RM
RV
RS
Read product name
Read model number
Read firmware version number
Read serial number
Other Commands
AOFFn
Auto-shutoff. n=0-30 minutes. 0=auto shutoff disabled
SAVE
Save current settings in nonvolatile memory
LIST
List current settings and status
Following is an example LIST output:
V1.00;LBF;CUR;FLTC8;FLTP1;AOUT00;AOFF5;FULL;IPOL0;OPOL0;MIT;POL;B0
All fields are separated by “;”. The first field shows the firmware version, the last field shows the remaining
battery power (B0=full charge, B3=minimum power). All other fields show the status of settings and
features using the same abbreviations as the commands to set them.
Any detected errors are reported back by means of the following error codes:
*10
*11
*21
*22
Illegal command
Not applicable
Invalid specifier
Value too large
10 CALIBRATION
10.1 Initial Physical Setup
The sensor should be mounted vertically to a test stand or fixture rugged enough to withstand a load
equal to the full capacity of the sensor. Certified deadweights, torque arms/wheels, and/or master load
cells should be used, along with appropriate mounting brackets and fixtures. Caution should be taken
while handling such equipment.
10.2 Calibration Procedure
In the interests of simplicity and brevity, the following instructions use force terminology only. Such
wording is displayed only when a force sensor is being calibrated. When a torque sensor is being
calibrated, the terms COMPRESSION and TENSION are replaced by CLOCKWISE and COUNTERCLOCKWISE, respectively.
1. Select Calibration from the menu. The display appears as follows:
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Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
CALIBRATION
Enter # cal points
(1 to 10)
Compression:
5
Tension:
5
The sensor can be calibrated at up to 10 points in each direction. Enter the number of calibration
points for each direction (compression and tension or clockwise and counter-clockwise). At least
one point must be selected for each direction. For single-direction sensors such as Omega’s
Series RLC02, only one direction is allowed.
Note: To achieve the accuracy specification of ±0.1% + sensor, it is recommended to calibrate
the sensor at 5 or more even increments in both the tension and compression directions. For
example, a sensor with capacity of 10 lbF should be calibrated at 2, 4, 6, 8, and 10 lbF loads in
each direction.
2. To escape the Calibration menu at any time, press ESCAPE. The display appears as follows:
CALIBRATION
NOT COMPLETE
Cancel
Exit w/o saving
Selecting “Cancel” will revert back to the Calibration setup. Selecting “Exit w/o saving” will return
to the menu without saving changes.
3. After the number of calibration points has been entered, press ENTER. The display appears as
follows:
CALIBRATION
OFFSET
Place sensor
horizontally, then
press ZERO.
4. Place the force sensor horizontally on a level surface free from vibration, then press ZERO. The
indicator will calculate internal offsets, and the display appears as follows:
CALIBRATION
OFFSET
Please wait…
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Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
CALIBRATION
OFFSET
CALIBRATION
OFFSET
Sensor passed
Analog passed
Sensor failed
Analog failed
If failed:
5. The following screen appears after the offsets have been calculated:
CALIBRATION
COMPRESSION
Attach necessary
weight fixtures,
then press ENTER.
Attach weight fixtures (brackets, hooks, etc), as required. Do not yet attach any weights or apply
any calibration loads. Press ENTER.
6. The display appears as follows:
CALIBRATION
COMPRESSION
Optionally exercise
sensor, then press
ENTER.
Optionally exercise the sensor several times (at full scale, if possible), then press ENTER.
7. The display appears as follows:
CALIBRATION
COMPRESSION
Gain adjust
Apply full scale load
10.000 lbF +/-20%,
then press ENTER.
Apply a weight equal to the full scale of the instrument, then press ENTER.
8. After displaying “Please wait…” the display appears as follows:
CALIBRATION
COMPRESSION
Ensure no load,
then press ZERO.
Remove the load applied in Step 8, leave the fixtures in place, then press ZERO.
24
Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
9. The display appears as follows:
CALIBRATION
COMPRESSION
Apply load
1 OF 5
Enter load:
2.000 lbF
Press ENTER.
Use the UP and DOWN keys to adjust the load value as required. The load values default to even
increments, as indicated by the previously entered number of data points (even increments are
recommended for best results). For example, if a 50 lbF capacity sensor is calibrated, and 5 data
points were selected, the load values will default to 10, 20, 30, 40, and 50 lb. Apply the calibration
load. Then press ENTER.
Repeat the above step for the number of data points selected.
10. After all the compression calibration points have been completed, the display appears as follows:
CALIBRATION
COMPRESSION COMPLETE
Reverse direction
for tension.
Attach necessary
weight fixtures,
then press ENTER.
Press ENTER.
11. At the completion of the tension calibration, the display appears as follows:
CALIBRATION
COMPLETE
Save & exit
Exit w/o saving
To save the calibration information, select “Save & exit”. To exit without saving the data select
“Exit without saving”.
12. Any errors are reported by the following screens:
CALIBRATION
Units must be gF.
Please try again
Press ENTER.
Displayed at the start of calibration if a disallowed unit is selected.
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Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
CALIBRATION
Load not stable.
Please try again.
Ensure that the load is not swinging, oscillating, or vibrating in any manner. Then try again.
CALIBRATION
COMPRESSION
Load too low.
Please try again.
Causes:
1. The calibration weight does not match the set value.
2. If using a DFG-RSA configurable adapter, ensure that the output signal leads (SG+ and SG-)
have been installed into the appropriate terminal blocks. Some sensor manufacturers
consider SG+ to be a compression value, while others consider it to be a tension value. If the
indicator is expecting a compression load but it is receiving a tension signal, calibration
cannot continue. Verify that the tension/compression indicator on the home screen properly
corresponds to the load direction, and switch the signal leads, if required.
CALIBRATION
TENSION
Load too close
to previous.
Please try again.
The entered calibration point is too close to the previous point.
11 PASSWORDS
Two separate passwords may be set to control access to the Calibration section and to the menu and
other keys. To access the passwords setup screen, select Passwords from the menu. The display
appears as follows:
PASSWORDS
Calibration
Menu Key
Sensor Lock
Units Key
Mode Key
+ More
Select “+ More” for additional options:
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Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
PASSWORDS 2
Zero Key
Data Key
Clear Key
Power Key
11.1 Calibration Password
Select Calibration from the sub-menu. The display appears as follows:
CALIBRATION PASSWORD
* Disabled
Enabled
Set Password
(0000 – 9999)
5000
To set the password, select Enabled, then Set Password. Use the UP and DOWN keys to increment and
decrement the value, from 0 to 9999. When the desired value has been selected, press ENTER, then
ESC to exit the sub-menu.
11.2 Menu Key Password
If enabled, every time the MENU key is selected, a password must be provided. Select Menu Key from
the sub-menu. Follow the same procedure as described above.
11.3 Sensor Lock
The indicator may be configured to operate only when a particular sensor is connected. To enable,
ensure that the appropriate sensor is connected. Then, highlight Sensor Lock in the sub-menu, and
press ENTER.
After configuration, if a different sensor is connected, the display appears as follows:
WRONG SENSOR
CONNECTED
Connect sensor
SN 1234567
then press ENTER.
Connect the correct sensor, then press ENTER to continue. If the correct sensor is not available, contact
Omega for further instructions.
11.4 Locking Out Other Keys
Other keys may be locked out individually. Select any combination of keys (UNITS, MODE, ZERO,
DATA, CLEAR, POWER) by pressing ENTER in the Passwords sub-menu. Pressing a locked key will
prompt the message “KEY PROTECTED” instead of performing the key’s function.
11.5 Password Prompts
If passwords have been enabled, the following will be displayed when pressing the MENU key or
accessing the Calibration section:
27
Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
ENTER PASSWORD
(0000 – 9999)
5000
Use the UP and DOWN keys to select the correct password, then press ENTER to continue.
If the incorrect password has been entered, the display appears as follows:
INCORRECT PASSWORD
Reset password
Request code:
XXXX
Press ENTER or ESC
To re-enter the password, press ESC to exit to the home screen. Then, access the desired function and
enter the password again when prompted.
If the password has been misplaced, it can be reset. Press ENTER to generate a request code. The
request code must be supplied to Omega, who will then provide a corresponding authorization code.
Enter the activation code to disable the password.
12 OTHER SETTINGS
12.1 Automatic Shutoff
The indicator may be configured to automatically power off following a period of inactivity while on battery
power. Inactivity is defined as the absence of any key presses or load changes of 100 counts or less. To
access these settings, select Automatic Shutoff from the menu. The display appears as follows:
AUTOMATIC SHUTOFF
* Disabled
Enabled
Set Minutes
5
Select Disabled to disable automatic shutoff. Select Enabled to enable it. The length of time of inactivity
is programmed in minutes via the Set Minutes parameter. Available settings: 5-30, in 5 minute
increments.
Note: If the AC adapter is plugged in, the indicator will ignore these settings and remain powered on until
the POWER key is pressed.
28
Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
12.2 Backlight
Although the backlight may be turned on and off at any time by pressing the BACKLIGHT key, there are
several available initial settings (applicable upon powering on the indicator). To access these settings,
select Backlight from the menu. The display appears as follows:
BACKLIGHT
Off
On
* Auto
Set Minutes
1
Selection
Off
On
Auto
Description
Backlight to be off upon powering on the indicator.
Backlight to be on upon powering on the indicator.
Backlight to be on upon powering indicator, but will shut off after a period of inactivity
(as defined in the Automatic Shutoff sub-section). The backlight will turn on again
when activity resumes. The length of time of inactivity is programmed in minutes via the
Set Minutes parameter. Available settings: 1-10, in 1 minute increments.
Note: If the AC adapter is plugged in, the indicator will ignore these settings and keep the backlight on.
12.3 LCD Contrast
The contrast of the display may be adjusted. Select LCD Contrast from the menu. The screen appears
as follows:
LCD CONTRAST
Set Contrast
10
Press ENTER to modify the contrast. Select a value from 0 to 25, 25 producing the most contrast.
12.4 Tones
Audible tones can be enabled for all key presses and alerts, such as overload, set point value reached,
etc. The Set Point alert can be configured to be either a momentary tone or a continuous tone (until the
load is restored to a value between the set points). To configure the functions for which audible tones will
apply, select Tones from the menu. The screen appears as follows:
TONES
Keys
* Alerts
Set Points
* Momentary
Continuous
29
Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
12.5 Initial settings
This section is used to configure the initial settings upon powering on the indicator. The initial units of
measurement and the primary reading measurement mode may be configured. To access these settings,
select Initial Settings from the menu. The screen appears as follows:
INITIAL SETTINGS
Units
lbF
Mode
Real Time
The default unit of measure depends on the sensor series. The default mode is Real Time, regardless of
sensor.
12.6 Restore Default Settings
Default factory settings can be restored by selecting Restore Defaults from the menu. The settings may
be found in the Specifications section. The screen appears as follows:
RESTORE DEFAULT
SETTINGS?
No
Yes
12.7 Information / Welcome Screen
The following screen is displayed at power up and can be accessed at any time by selecting Information
from the menu:
Digital Indicator
Model DFG-RS5
Ind. SN: 1234567
Sensor: RLC01-100
Sensor SN: 9876543
Version: 1.0
30
Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
13 SPECIFICATIONS
13.1 General
Accuracy:
Sampling rate:
Power:
Battery life:
Measurement units:
Outputs:
Weight:
Included accessories:
Environmental
conditions:
Warranty:
±0.1% of full scale + sensor
7,000 Hz
AC or rechargeable battery. Low battery indicator appears when battery level is low, and
indicator powers off automatically when power reaches critical stage.
Backlight on: up to 7 hours of continuous use
Backlight off: up to 24 hours of continuous use
lbF, ozF, gF, kgF, N, kN, mN, lbFft, lbFin, ozFin, kgFm, kgFmm, gFcm, Nm, Ncm, Nmm
(depending on sensor)
USB / RS-232: Fully configurable up to 115,200 baud. Includes Gauge Control Language
2 for full computer control.
Mitutoyo (Digimatic): Serial BCD suitable for all Mitutoyo SPC-compatible devices.
Analog: ±1 VCD, ±2% of full scale at capacity.
General purpose: Three open drain outputs, one input.
Set points: Three open drain lines.
0.7 lb [0.3 kg]
Carrying case, AC adapter, battery, USB cable, resource CD (USB driver and user’s
guide), NIST-traceable certificate of calibration
40 - 100°F, max. 96% humidity, non-condensating
3 years (see individual statement for further details)
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Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
13.2 Factory Settings
Parameter
Set points
Upper
Lower
Filters
Current
Displayed
Average mode
Initial Delay
Trigger Force / Torque
Averaging Time (sec.)
External Trigger
DATA Key Functions
RS-232/USB Output
Mitutoyo Output
Memory Storage
Backlight
Minutes
Serial/USB
RS-232 Output Selected
USB Output Selected
Baud Rate
Data Format
Auto Output
Outputs per Sec.
Mitutoyo BCD Output
Automatic Shutoff
Minutes
Tones
Keys
Alerts
Set Points
Initial Settings
Units
Mode
Passwords
Setting
Disabled (defaults to 80% of full scale, C/CW, when enabled)
Disabled (defaults to 40% of full scale, C/CW, when enabled)
8
512
Disabled
0
10% of full scale
5.0
Disabled
Enabled
Disabled
Enabled
Auto
1
Enabled
Disabled
115,200
Numeric + units
Disabled
125
Disabled
Enabled
5
Enabled
Enabled
Momentary
Depends on sensor
Real Time
All passwords disabled
13.3 Dimensions IN [MM]
32
Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
33
Model DFG-RS5 Digital Force / Torque Indicator
User’s Guide
34
M-5251/1017
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