Watson-Marlow MC12 - Manual (Page 14)

Operators and Reference Manual
MC12
MC12 OM RM 1.03_EN Version: 1.03 Date: 2010-11-17 Page 14 of 46
6.7.3. Function 3 - Velocity
Value: Revolutions per minute (rpm).
Enter the required velocity.
Velocity range depends on tube size applied.
Range:
Tube Sizes Max. Velocity Max. acceleration
0.5 - 0.8 – 1.2 – 1.6 600 200
3.2 500 150
4.8 - 6.0 – 8.0 400 100
If a value outside the range is entered, the MC12 will automatically correct the value to the
closest value allowed and the operator has to accept it by pressing the key.
The fastest filling will be carried out at the highest velocity setting but the velocity should always
be adjusted to suit the characteristics of the product and to reduce splashing or foaming.
If the velocity is changed during a fill, the fill will be completed using the original parameters and
the new value will not be applied until the start of the next fill.
If the velocity is changed while using the unit as a pump, the drive will apply the new parameters
immediately. The change will be carried out at the acceleration or deceleration entered in
Function 4.
6.7.4. Function 4 - Acceleration/deceleration
Value: An integral number.
The filling can start and stop more or less abruptly.
This function offers a choice of values between 1 and 200 dependent on the tube size and drive;
1 = slowest, 200 = fastest.
Tube Sizes Max. Velocity Max. acceleration
0.5 - 0.8 – 1.2 – 1.6 600 200
3.2 500 150
4.8 - 6.0 – 8.0 400 100
If a value outside the range is entered, the MC12 will automatically correct the value to the
closest value allowed and the operator has to accept it by pressing the key.
The function is used for optimizing the filling according to the product and the shape of the bottle.
Function 4 affects pumping as well as filling and calibration.
If the value of the parameter is changed during a fill or calibration, the new value will not be
applied until the start of the next fill or calibration.