Siemens milltronics MSI Guia De Inicio Rapido página 5

Operation
The MSI weighbridge is designed to react only to the vertical component of the force being
applied. The MSI consists of a fixed support frame (static) and a live frame (dynamic). The
static frame is the main scale support between the conveyor stringers which in turn supports
the dynamic frame including the load cells.
The dynamic frame supports the scale idler and transfers the weight of the material to the load
cells.
As the material travels along the conveyor belt, a force is exerted through the suspended idler
to the dynamic frame. The dynamic frame is forced down proportionally. The movement in the
load cell is sensed by its strain gauges when excited by voltage from the electronic integrator
and produces a signal proportional to weight, which is returned to the integrator. The
movement in each load cell is limited by the positive stop incorporated in the design of the load
cell.
idler bracket
7ML19985XK81
test weight bar
force
Milltronics MSI/MMI – QUICK START MANUAL
Note:
Conduit and
cable arrange-
ment may dif-
fer from the
example shown
idler clip
idler frame
scale mounting
bracket
dynamic beam
static beam
Page EN-3