User manual

X K 3 1 9 0C 602
III. Connection between load cell and indicator
1. 7-pin electrical male plug are adopted for connection of load cell. Figure 3-5 shows the
meanings of each pin.
2. When junction box is used to connect several load cells or extend the cable of load cell,
six-wire connecting method must be adopted. When 1 load cell is used and the cable is not
extended, four-wire system can be adopted. Under this condition, it is necessary to short connect
the EX+ and SEN+ with EX- and SEN- respectively.
3. The load cell and indicator should be reliably connected and the shielded line of load
cell should be reliably connected with GND terminal. The connecting line can not be plugged
in and out when the indicator is powered on in order to prevent any damage to the indicator
or load cell by static electricity
4. The load cell and indicator are both static sensitive equipments, so anti-static measures
must be taken during the use. It is strictly forbidden to carry out welding operation or other
operations with high current on the weighing platform. In the stormy season, lightening
prevention measures must be taken reliably to prevent any damage to load cell and indicator
caused by lightening stroke, and to guarantee the personal security of operators and safe
running of weighing devices and relative equipments.
In the figure: EX+, EX-: excitation power supply; SEN+, SEN-: excitation feedback; SIG+, SIG-: load cell output
signal; GND: shield
Figure 3-5 Connection Diagram of Load cell