Cooper DFI 250X User Manual
DFI 250
DIGITAL INDICATOR
QUICK START MANUAL
www.cooperinstruments.com
PH: (540) 349-4746 • FAX: (540) 347-4755
CONTENTS
1.0 INTRODUCTION..................................................................................................................................1
1.1 Approvals (for trade versions only).................................................................................................1
1.2 Manuals...............................................................................................................................................1
2.0 SHIPPING CONTENTS......................................................................................................................1
3.0 SPECIFICATIONS...............................................................................................................................1
4.0 WARNINGS..........................................................................................................................................2
4.1 General................................................................................................................................................2
4.2 Configuration Issues.........................................................................................................................2
5.0 INSTALLATION...................................................................................................................................2
5.1 Electrical Safety.................................................................................................................................2
5.2 Panel Mount Template.......................................................................................................................2
5.3 Special Function Key.........................................................................................................................2
5.4 GSE-LINK............................................................................................................................................3
5.4.1 GSE-LINK Activation ..................................................................................................................3
6.0 CONNECTIONS ...................................................................................................................................3
6.1 Cable Connections .............................................................................................................................3
6.2 DC Power (DC PWR +, DC PWR –)...................................................................................................3
6.3 Load Cell Connection........................................................................................................................4
6.3.1 4-Wire Connection ......................................................................................................................4
6.3.2 6-Wire Connection..........................................................................................................................4
6.4 Auxiliary Connections.......................................................................................................................4
6.4.1 Direct Personal Computer Link (RXD, TXD, GND)..................................................................4
6.4.2 Printer Connections (RXD/TXD, GND and DTR)......................................................................5
6.4.3 Remote Display (TXD, GND)......................................................................................................5
6.4.4 Remote Input ...............................................................................................................................5
6.4.5 Outputs.........................................................................................................................................5
6.5 Connecting Shields ............................................................................................................................6
6.5.1 Cable Shield Connection and Earthing....................................................................................7
6.6 Regulatory Sealing Requirements...................................................................................................7
6.6.1 Sealing..........................................................................................................................................7
7.0 INSTRUMENT SETUP........................................................................................................................7
7.1 Calibration Counter............................................................................................................................7
7.1.1 Trade Critical Settings................................................................................................................8
7.2 GSE-LINK............................................................................................................................................8
7.3 Access Full Setup..............................................................................................................................8
7.4 Access Safe Setup.............................................................................................................................8
7.5 Exit Full or Safe Setup.......................................................................................................................8
7.6 Settings...............................................................................................................................................8
8.0 ERROR MESSAGES........................................................................................................................12
8.1 Weighing Errors...............................................................................................................................12
8.2 Setup and Calibration Errors ..........................................................................................................12
8.3 Diagnostic Errors.............................................................................................................................12
9.0 WARRANTY REPAIR POLICY.......................................................................................................13
CF 146 ii V- Rev. 1.0 - 003R-620 -100
1.0 INTRODUCTION
This manual contains information on the installation, calibration and setup of the instrument.
1.1 Approvals (for trade versions only)
• NSC approval (4000 divisions at 0.8µV/division).
• NMI approval (4000 divisions at 0.8µV/division).
• C-tick approved and CE approved.
1.2 Manuals
For more information on this instrument refer to the Reference Manual or Quick Start Manual.
2.0 SHIPPING CONTENTS
The following table identifies the items shipped with the indicator. Please check that your packing box contains the
specified items.
Shipped Items Other Items (Optional)
• Indicator
• Operator Manual
• Quick Start Manual
• Trade Label (plastic)
• GSE-LINK Cable
• Power Supply
• Desk Mount with Battery Compartment
• U Bracket
• Panel Mount Template
• Function Key Overlay Stickers
3.0 SPECIFICATIONS
Performance
Resolution Up to 30,000 divisions, minimum of 0.25µV/division, 20 updates/second (Trade
4000 divisions at 0.8µV/division)
Zero Cancellation ±2.0mV/V
Span Adjust ment 0.1mV/V to 3.0mV/V full scale
Stability/Drift Zero: < 0.1µV/°C (+ 8ppm of deadload max)
Excitation 5 volts for up to 4 x 350 or 8 x 700 ohm load cells (4-wire or 6-wire plus shield)
A/D Type 24bit Sigma Delta with 8,388,608 internal counts
A/D Conversion Rate 20Hz with FIR filtering > 80dB
Operating Environment Temperature: 14 to 122°F ambient
Case Materials ABS, Silicon Rubber, Nylon, Acrylic (no halogen used)
Packing Weights Basic Indicator: 0.75lb
Digital
Display LED Backlit LCD with six 0.8in high digits with units and annunciators
Setup and Calibration Full digital with visual prompting in plain messages
Digital Filter Sliding window average from 0.1 to 4.0 seconds
Zero Range Adjustable from ±2% to ±20% of full capacity
Power Input
Standard Power Input 12 to 24VDC (2.5 VA max) - ON/OFF key with memory feature
AC Wall Transformer: 110/240VAC 50/60Hz in 12VDC 0.5A out Variants
Battery 4 x AA batteries (Alkaline or rechargeable NiMH, NiCad, etc.)
Features
GSE-LINK Data Coupling Infra-red Connector for optional GSE-LINK PC cable (to RS-232 PC port)
Correction Five point linearity correction
Outputs RS-232 automatic transmit, network or printer outputs. Transmission rate: 2400,
Assignable Function Key Unit switching, counting, manual hold, peak hold, live weight and totalizing
Span < 8 ppm/°C, Linearity < 20ppm, Noise < 0.2µVp-p
Maximum total load cell resistance: 1,000 ohms
Humidity: <90% non-condensing
Storage: –4 to +122°F ambient
IP55 when panel mounted
4800 or 9600 baud
CF 146 1 V- Rev. 1.0 - 003R-620 -100
Drive Outputs 2 isolated transistor drive outputs (300mA total at 50VDC)
Battery Backed Clock Calendar Battery life 10 years minimum
4.0 WARNINGS
4.1 General
• Indicator not to be subject to shock, excessive vibration or extremes of temperature (before or after installation).
• Inputs are protected against electrical interference, but excessive levels of electro-magnetic radiation and RFI
may affect the accuracy and stability.
• For full EMC or for RFI immunity, termination of cable shields and correct earthing of the instrument is
essential.
• Indicator and load cell cable are sensitive to excessive electrical noise. Install well away from any power or
switching circuits.
4.2 Configuration Issues
• Configuration and calibration can be performed from the front panel, using digital setup. When Full Setup is
used, all menu items are accessible and care must be taken to ensure no accidental changes are made to
calibration and trade settings.
• Enter a passcode to prevent unauthorized or accidental tampering. If the passcode is lost, GSE Scale Systems
should be contacted for further advice.
5.0 INSTALLATION
The following steps are required to set up the indicator.
• Inspect indicator to ensure good condition.
• Use connection diagrams to wire up load cell, power and auxiliary cables as required.
• Use the drill hole template provided for hole locations.
• Connect Power to indicator and press <POWER> key to turn the instrument On.
• Refer to the Instrument Setup section page 15 for information on configuring and calibrating the instrument.
• To turn instrument Off press and hold <POWER> key for three seconds (until display blanks).
5.1 Electrical Safety
• For your protection all electrical hardware must be rated for environmental conditions of use.
• Pluggable equipment must be installed near an easily accessible power socket outlet.
• To avoid the possibility of electric shock or damage to the instrument, always switch off or isolate the
instrument from the power supply before maintenance is carried out.
5.2 Panel Mount Template
Use the panel mount template for drill hole locations. The template indicates positions for the two 4mm mounting
screws through the panel. Also displayed on the template is the position of the rectangular hole that should be cut
to allow for the connection of cables. The drilling template supplied with the indicator allows for front or rear
machining of the panel.
5.3 Special Function Key
• The Special Function Key on the instrument ships as a blank key.
• If any of the special functions are to be used on the indicator it is important that the matching function key
overlay sticker (supplied) is applied to the keypad.
• Ensure keypad is clean and dry before affixing sticker.
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5.4 GSE-LINK
The optional GSE-LINK cable can be used to transfer setup and
calibration information from a PC (e.g. to be stored for later use and/or
transferred to other instruments). It can also be used to download software
upgrades to the instrument from a PC.
• Attach the GSE-LINK cable to the PC using the DB9 connector.
• Attach the GSE-LINK head to the left side of the instrument display using
the permanent magnet located within the head of the GSE-LINK.
WARNING: The GSE-LINK head contains a strong magnet and care should be taken with its proximity to
electronic media (e.g. credit cards, floppy disks, etc.) and/or other electronic instrumentation.
5.4.1 GSE-LINK Activation
A long press of the <GROSS/NET> key will toggle the GSE-LINK infrared communications On/Off.
When the GSE-LINK has been enabled the following will occur:
• The instrument briefly displays the prompt rin-L.
• The editing annunciators (i.e. GRP, ITM, etc.) will flash for up to five minutes while the instrument searches for
activity. During this period, the instrument also disables the RS -232 communications.
• Activity Located: If the instrument is successful in locating activity, the editing annunciators will continue to
flash during the entire period of communications.
• No Activity Located: If the instrument fails to locate activity, the GSE-LINK will be disabled and the editing
annunciators will stop flashing. The instrument will also revert back to the normal RS-232 communications (i.e.
the SERIAL:TYPE setting will be re-activated).
6.0 CONNECTIONS
6.1 Cable Connections
• All cable connections are made to the rear of the instrument using screwless terminals.
• Wires must be stripped of insulation by at least 10mm.
• To install, depress the orange lever beside the terminal required and push wire into the hole. Release the lever
and pull gently on the wire to ensure it is securely trapped in the terminal.
6.2 DC Power (DC PWR +, DC PWR –)
• The DC supply need not be regulated, provided that it is free of excessive electrical noise and sudden
transients.
• The instrument can be operated from a high quality AC wall transformer as long as there is sufficient capacity
to drive both it and the load cells.
CF 146 3 V- Rev. 1.0 - 003R-620 -100
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