Cooper Instruments & Systems DFI 1650 Multi-Channel Digital Force Indicator User Manual
Page 31
CF 66
25
Rev. C 2/05
7 +OUT
Analog
Output
8
8 -OUT
Analog
Return
-
9 +MEM
(+)
Signature
10
10
-MEM
(-) Signature/Digital Ground
-
11
AUX1
Auxiliary Function 1(connect to pin 10 to activate)
10
12
(bottom)
AUX2
Auxiliary Function 2 (connect to pin 10 to activate)
10
The Analog Output and Analog Return pins are electrically isolated from all other pins on the instrument.
The maximum recommended cable length to a Signature Module is 100 feet [30m].
If you are not using remote sensing of excitation, jumper (+)Sense to (+)Excitation and (-)Sense to
(-)Excitation. If nothing is connected to (+)Sense and (-)Sense, the instrument will enter the ERROR mode with
error code 46.
Figure 10-1: Un-amplified Transducer Connection to Strain-Gage Input Channel
10.3 Calibration Procedure
If you are not familiar with operating the instrument in the SETUP menu mode, see “SETUP Menu mode”. A listing
of all menu items is given in “Setup Menu Reference” in Chapter 18.
Step 1: Wire the transducer to the channel’s connector. See “Wiring” in Section 10-2 for details.
Step 2: Enter the CALIBRATION TYPE.
There are three methods that can be used to calibrate the transducer to the Input Channel. Each has advantages
and disadvantages as described in the CALIBRATION TYPE menu item section. It is important to know your
application in order to select the appropriate calibration type.
Step 3: Enter the CALIBRATION DATA.
If your transducer has Signature Calibration, you don’t need to enter these values as they are entered
automatically. If your transducer was ordered and shipped along with the instrument, you don’t need to enter these
values as they have been entered at the factory. Otherwise, consult the Certificate of Calibration for the transducer
when entering information in the CALIBRATION DATA sub-menu.
Step 4: Perform the calibration.
Otherwise, use the CALIBRATE menu item starts the calibration process. You will be prompted to apply loads to
the transducer as required.