
9
Technical Manual
WIRING
Opening the Lightspeed Enclosure
1. Make sure the unit is disconnected from power.
2. Remove the screws from the back of the enclosure.
3. Lift the back cover away from the enclosure. Be sure to observe proper ESD
procedures when handling PCBs.
Load Cell Wiring
1. Ensure the unit is not plugged in or powered on.
2. Run the cable from the load cell or junction box through the strain-relief
and wire the indicator power to the Load Cell Terminal Block (J4). See
table below:
LOAD CELL TERMINAL (J4)
LOAD CELL WIRE
+EXC
Positive Excitation
+SNS
Positive Sense
+SIG
Positive Signal
SHLD
Shield Wire
-SIG
Negative Signal
-SNS
Negative Sense
-EXC
Negative Excitation
Load Cell Jumpers
The Lightspeed accommodates 4 or 6 wire load cells. When using 4 wire load
cells (No SENSE wires), the pins on JP1 and JP2 must be jumpered. For 6 wire
load cells, remove the jumpers. See illustration below:
4 wire load cell – Jumpers ON
6 wire load cell – Jumpers OFF
Содержание Lightspeed
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