Cooper Instruments & Systems DFI 7000 Digital Force Indicator - Manual (Page 3)

CF11 3 V-May 2003-008-0186-00
3.2 Mounting the Unit
For panel mounting, cut a rectangular hole 3.58” in width by 1.73” in height. Remove the panel mounting brackets
by unsnapping them from the sides of the DFI 7000. Place the DFI 7000 through the panel cutout and reattach the
panel mounting brackets to the sides of the case. Use a small screwdriver to tighten the panel mounting bracket
adjusting screws until the case is pulled tightly into the panel.
3.3 Wiring to The Sensor
All connections to the DFI 7000 are made through the rear-panel 15-pin connector. Terminal 1 is AC HI; terminal
15 is + EXC. This connector may be separated from the DFI for wiring by pulling on it gently. Connect the strain-
gage sensor to the DFI 7000’s last four terminals, marked (+) EXC.,(-) EXC., (+) SIGNAL and (-) SIGNAL terminals,
respectively.
The DFI 7000 will accept strain-gage transducers with bridge impedances of 350 ohms or greater. Wires from the
transducer may be pushed into the terminal using a small screwdriver.
CAUTION: The connector can be inserted incorrectly. Fluted side down. Flat side is up! Incorrect insertion of this
connector will result in extreme circuit damage.
3.4 Wiring The Output
If the 0-5V output of the DFI 7000 is to be used, wire to terminals 10 and 11, marked +OUTPUT and –OUTPUT.
Observe the correct polarity.
3.5 Wiring To The Optional Limits
The DFI 7000 utilizes relay output limits that are energized when the signal level exceeds the limit setting. The
COMMON, NORMALY OPEN, and NORMALLY CLOSED contacts for the L1 limit set are on terminals 4, 5 and 6
respectively and for the L2 limit set on terminals 7, 9 and 8. The relays are rated at 24 volts, 1.0 amp (non-
inductive) or 48V, 0.5 amp (non-inductive).
COM
NC
NO
COM
NC
NO
LIMIT ONE (L1) LIMIT TWO (L2)
3.6 Wiring To The Optional Peak Detector
The DFI 7000 is available with an optional peak detector module. This circuit will detect the highest positive value,
which has been attained since the peak detector was last reset. Reset may be accomplished by pressing the RST