Operating instructions

Settings in the master mode

28 Operating instructions 22012836B 09/08

IND690-Fill

2.2.4 Weighing platform switchover

SCALE SWITCHOVER Switch back and forth between two weighing platforms

MANUAL Manual switchover with a pulse at input IN 6 of the first 8-690 relay box.

AUTOMATIC Switch over automatically.

WEIGHING-IN If ACKNOWLEDGE OFF is also set and the output OUT6 (End of Dispensing) on the

first 8-690 relay box is connected to the input IN 2 (Start), the dispensing process

and change run automatically.

To prevent valves from opening when no container is on the scale, the tare

monitoring function must be used in this setting.

Separate dispensing parameters can be entered for both weighing platforms. This

enables the control of two dispensing systems. For weighing platform 1 the

dispensing parameters must be saved to target memory 1, and for weighing

platform 2 to target memory 2.

If the same dispensing parameters are to be used for dispensing on both weighing

platforms, target memory 1 and 2 may not be assigned.

SUBTRACTIVE

WEIGH.

This function enables the quasi continuous dispensing from two supply vessels

standing on weighing platforms 1 and 2.

If the entered gross weight value WEIGHT is dropped below, the valves are closed,

the stabilization of the weighing platform is waited for and the other weighing

platform selected. The interrupted dispensing process is ended from the second

container.

With this alternative only one parameter set can be used.

Comments • Output OUT2 shows which weighing platform is currently active during the

dispensing process: LOW = weighing platform 1, HIGH = weighing platform 2.

• The correct weighing platform number automatically appears on the printout.

• The weight value WEIGHT required during WEIGHING OUT is available in the

application block 356, see section