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MCTC manual
High level [default 4000gr]:
When hopper level above this level the unit will freeze its motor speed because inaccurate weight
measurement. The regrind unit will dose extra regrind. As soon the hopper weight is below this level the unit
returns to normal gravimetric operation. This level is related to the maximum volume of the regrind dosing
unit hopper [~10 liters].
Method 1:
Regrind bulk density: 700 gr/liter.
High level: 700x10 = 7000gr.
Method 2:
Take the hopper from the machine and fill manually with material until the mark shown in
picture below and put back the hopper on the machine. Read out the weight on the MCTC .
Regrind level [default 3500gr]:
The weight used to calculate all internal fill start levels and regrind dosing rate levels. This setting depends on
the size of the storage hopper of the grinder.
Method 1:
Grinder hopper volume: 5 liter.
Regrind bulk density: 700 gr/liter.
Regrind level: 5 x 700 = 3500gr.
Method 2:
Set Regrind level 500 grams below High level.
Fill time [default 30sec]:
Maximum time the unit tries to load material from the grinder. In case a ME or EX loader system is
configured, this is the maximum time the loader is activated or the knife gate of the support frame is opened.
In case of a MFD loader, this time setting should not be set longer than the MFD Fill time + MFD Empty time
+ MFD blow back time (see advanced loader settings)
In case of a 3PH loader, this time setting should not be set longer than the 3PH Fill sequence time set on the
3PH loader controller (see 3PH loader manual for detailed information).
Fill interval time [default 180sec]:
Time between two attempts to load material from the grinder when the dosing hopper is empty eg. regrind
unit standby.
Extra regrind [default 5%]:
When more regrind is available, the dosing percentage of the regrind unit is increased with this %.
Example:
•
Regrind percentage in production settings: 20% (nominal);
•
Extra regrind: 5%;
•
Regrind level: 3500gr;
•
Hopper level after a fill sequence: 3750gr;
