MX08 Multichannel Weighing System, Technical Manual, Rev. 2.5 Page 17 of 144
The quality of the instrument’s ground will determine the accuracy and the safety of your
measuring system. A proper ground connection is needed to minimize extraneous
electrical noise affects on the measurement. A poor ground can result in an unsafe and
unstable operation. It is important that the instrument should not share power lines with
noise-generating equipments such as heavy load switching, motor control equipments,
inductive loads, etc. If the condition of the power line in the plant is poor, prepare a special
power line and grounding.
Before interfering the instrument, turn off the power and wait at least for 30 seconds.
Warning:
Do not forget to connect the grounding pin to the reference ground.
3.3.2.
Load Cell Connector
To avoid damages, the load cell wiring should be made carefully before energizing the
instrument. Load cell connection detail is shown in figure below. In 4-wire installations the
sense and excitation pins with the same polarity should be short circuited at the connector
side. If you have junction box in your system, use 6 wire cable between MX08 AD and the
junction box, and short circuit these pins at junction box for better performance.
Load cell
connector
4 wire LC connection
6 wire LC connection
Figure 2.4 - Load cell connection
Warning:
Connect the load cell cable shield to the reference ground or shield pin of the
load cell connector.
3.4. Gateway Connections
Gateways have two connectors on the front of the instruments: Field bus connector and
RS-232C serial interface connector.
