Load Cell Cable Connection Without Rfi Suppression; Load Cell Connections With Over 30 Feet Of Cable - Cardinal 225 Installation And Technical Manual

Load Cell Cable Connection
The following instructions describe the load cell connection without RFI Suppression should it
not be required.
1. Remove the 14 acorn nuts securing the rear panel to the main housing.
2. Referring to Figure No. 2, choose a gland connector for the load cell cable and loosen it.
3. Slip the single cable from the load cell or load cell junction box through the gland connector
and into the enclosure.
4. Referring to Figure No. 4, remove 3 inches (not 5 to 6 inches) of the outer insulation jacket
5. Next, remove 1/4 inch of insulation from each of the 4 wires and shield (without sense
leads) or 6 wires and shield (with sense leads).
6. Referring to the table below (or on the circuit board) for terminal connections, connect each
of the wires to terminal block P13. Refer to Figure No. 11 for terminal block location.
PIN NO.
U U
1 + EXCITATION
2
3
4
7. To terminate a wire, use a small flat blade screwdriver and press down on the release bar
for the terminal. Insert the wire into the terminal opening. Remove the screwdriver,
allowing the release bar to return to its original position, locking the wire in place. See
Figure No. 5.
8. Repeat the procedure until all wires are in place.
9. The load cell cable shield wire should be connected to terminal 4 on terminal block P13.

Load Cell Connections with Over 30 Feet of Cable

For installations with over 30 feet of cable between the indicator and the load cells, sense
wires should be used. The sense wires must be connected between the +SENS, -SENS
terminals on the indicator and the +EXCITATION, -EXCITATION wires of the load cells or the
+SENS, -SENS terminals of the load cell trim board or the section seal trim board. For the
indicator to use the sense wires, the +SENS jumper J7 and the -SENS jumper J9 must be
open (see Figure No. 11).
8200-M538-O1 225 Installation
INSTALLATION, CONT.
without
U
LOAD CELL TERMINAL – (P13)
Function
U U
+ SENSE
+ SIGNAL
SHIELD
RFI Suppression
U
PIN NO.
U U
5
6
7
Function
U U
- SIGNAL
- SENSE
- EXCITATION
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