Cooper Instruments & Systems DFI 7000 Digital Force Indicator - Manual (Page 2)

CF11 2 V-May 2003-008-0186-00
AMPLIFIER CHARACTERISTICS
Full-Scale Output
5 Volts
Output Impedance <2 ohms
Accuracy +/-0.03%
Frequency Response
>100 Hz.
Common Mode Rejection >80%
Fine Span Adjust +/-15%
Coarse Zero Adjust >80%
Short Circuit Protected Yes
DIGITAL DISPLAY CHARACTERISTICS
# Characters Displayed
4-1/2
Conversions per second 3
Scaling 0-19999
Scaling Method
Potentiometer
Polarity Indication "-" for Negative
Decimal Pt. Selection Jumper (non-solder)
Display Size 0.56”
Overrange Indication Flashing display
Resolution 1/20000
Type LED
PHYSICAL CHARACTERISTICS
Input/Output Connector
Screw Terminals
Weight 2 lbs.
Mounting Bench, panel or rack
DIN Size 1/8 DIN
POWER SUPPLY
Power Requirements
115VAC/220VAC (factory set, field changeable)
FRONT PANEL
Digital Display
4-1/2 digits LED
Limit Condition LEDs
3.0 UNPACKING, INSTALLING AND WIRING
The DFI 7000 is shipped in a single container. Inspect the unit for shipping damage, and gently shake and listen
for loose components prior to energizing it. Report shipment damage to the carrier; it is his responsibility to safely
transport the unit. If there is transportation damage and you have difficulty getting the problem resolved, contact
Cooper at (540) 349-4746. We will attempt to assist in resolving the situation.
3.1 Selecting Excitation Voltage
The DFI 7000 provides a 5 or 10 VDC strain-gage transducer power supply. These units are normally set for 10
VDC at the factory. To check or change the excitation voltage, proceed as follows:
1. Remove the bezel and front panel with a small screwdriver.
2. Carefully pull the Main Board out of the unit. All boards will come out simultaneously.
3. Gently remove the vertical Signal Conditioner Board from the right edge of the Main Board and locate the two
sets of three standoffs at the left end of this board. Check the jumper location for excitation voltage setup.
5 Volt Excitation 10 Volt Excitation
4. Replace the Signal Conditioner Board onto the Main Board and slide the board assembly into the case.
5. Reinstall the front panel and bezel.