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CCW-R-2**B INSTRUCTION MANUAL 6 FUNCTIONS OF THE OPERATION SCREENS

6-105

1. [Manual]

This mode operates with the feeder amplitude, feeder operation time and dispersion weight values

as set. It is not possible to automatically respond to changes in external conditions, such as changes

in the amount of supply and the condition of the product on the table and trough which are affected

by accumulated deposits. This mode is best suited when making adjustments while checking the

status changes in external conditions, when the infeed and product flow is stable. Since it is unlikely

that external condition changes will considerably deteriorate the production status, select this mode

when the auto control cannot realize stable production.

2. [Efficiency Ref. Control]

The aim of this mode is to perform automatic adjustment corresponding to differences in product

characteristics, slight variance in product infeed amount, and changes in infeed amount and flow of

products on the table and trough. This mode has the following features (To examine the auto control

performance, try this mode first.):

• Controls properly in consideration of weigher status.

• Can automatically adjust amount of products delivered from the dispersion feeder to the radial

feeder when the dispersion weight adjustment is selected.

• The control stops during stable status in which the efficiency (6.12.1 [Current Total] Screen) set

for the good efficiency judgement value is achieved. However, the control automatically resumes

if efficiency lowers due to external condition changes.

• Adjusts feeding capacity of the dispersion feeder to reduce flow increase when the weight of

products on the dispersion feeder is larger than the value set for the dispersion weight if the DF

adjust for overfeed is selected.

Note the following points in setting up this control mode.

• Set the RF time within the valid time mentioned below in accordance with the product, speed, etc.

However, to operate DF continuously, set a value over the valid time below.

[Valid DF (RF) time] = 3600 / (Weigher speed)

• Set the DF amplitude so that products can be delivered to all radial troughs, by actually checking

the product dispersion status visually or with a dispersion camera (optional).

• Set the AFD range (6.13.3 AFD Range Setting) referring to the list below.

Proper cleaning The auto control function adjusts the feeder capacity in accordance with the changes in flow

of products caused by deposits on the table and trough. However, in the case of product flow

being stopped by excessive deposits, the auto control cannot solve the problem. It is important

to perform proper cleaning in order to maintain high efficiency.

Feeder capacity The auto control function is based on the assumption that the feed amount of products is

increased/decreased in proportion to changes in feeder amplitude. When this condition is not

satisfied due to some factors such as products or target weight, the auto control may not

operate properly. In this case, select the manual or the auto time control mode.

Table 6-48 Notes on Auto Control (Continued)

Keyword Points

ISHIDA CCW-R-2 B Series User Manual

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