7
Getting Started
Wiring Assignments in the Connecting Cable
No. Signal Explanation
1 BR_POS Bridge supply voltage, positive (IN+)
2 SENSE_POS Sense (+) bridge supply voltage
3 OUT_POS Measuring voltage, positive
4 OUT_NEG Measuring voltage, negative
5 SENSE_NEG Sense (–) bridge supply voltage
6 BR_NEG Bridge supply voltage, negative (IN–)
8 TS_GND
9 TK_IN2 Pins 8/9: Option for external
temperature sensor
Note:
Refer to the relevant operating instructions or service specifications for the wiring
assignments in the load cell or weighing instrument. Make sure to isolate any
unused wires.
To connect a load receptor that uses 4-wire technology, add a bridge to connect
terminals 1 and 2 and another to connect 5 and 6.
§ Attaching the wires to the terminals:
– Expose approximately 1 cm of each wire end.
– Place the ferrules on the wire ends and fasten them.
– Slide the enclosed tubing over all the wires down to the cable gland, so that
no more than 5 cm of wire is free between the end of the tubing and the
terminal strip.
– Connect the wires in accordance with the wiring assignment chart.
§ Use a screwdriver to tighten the screws in the terminal strip.
Note:
The bridge supply voltages are protected by 125mA fuses. To prevent the fuses
from reacting if wires are incorrectly connected, resistors between pin 1 and pin
6, between pin 1 and the housing and between pin 6 and the housing must
measure greater than 80 ohms. Low-ohm connections are also required
between pins 1 and 2 and between pins 5 and 6.
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