Control Techniques M'Ax, Advanced User'S Manual

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M’Ax Advanced User Guide
64
Issue Number: 4 www.controltechniques.com
Parameter [0.46] can be assigned to any advanced parameter and given a scaling factor. Typical uses are as follows:
1. Indicates the rate of flow in a way that is meaningful to the production process (e.g cans per hour)
2. Indicates the torque calculated from the motor current.
The default function is as follows:
0.1 x [0.05] speed feedback
Assigning [0.46] to another parameter.
1. Enter the number of the required parameter in [11.20].
2. Save parameters.
Changing the scaling for [0.46.]
1. Note the number of decimal places used by the values of the parameter assigned to parameter [0.46]. Obtain the value of the modifier
from the following table.
2. Use [11.21] to define the required scaling factor, as follows:
[11.21] = [0.46] / [XX.XX] x M
Where:
[XX.XX] is the value of the parameter that is assigned to parameter 0.46 by parameter [11.20].
3. Save parameters.
Examples
Default settings.
Parameter assigned to parameter [0.46] = [3.02]
Number of decimal places used in the value of parameter [3.02] = 1
Therefore M = 1
Default setting of parameter [11.21] = 0.1
The value of parameter [0.46] is given by:-
[0.46] = [3.02] x [11.21] x M
For example, when [3.02] = 1500rpm, [0.46] is as follows:-
[0.46] = 1500 x 0.1 x 1 = 150
Approximate indication of torque.
1. Set parameter [11.20] at [4.01] or [0.07] (motor current magnitude).
2. Two decimal places are used in the value, therefore M = 10
3. Set parameter [11.21] at 0.16 (1.6 / 10 = 0.16) to represent the K
T
of the motor. (Here K
T
is divided by 10 due to M = 10.)
4. Parameter [0.46] will indicate as follows:-
[0.46] = [4.01] x 0.16 x 10
When [4.01] is 2.75A:-
[0.46] = 2.75 x 0.16 x 10 = 4.4
This parameter defines which parameter is displayed on power up. Defaulted to parameter 0.05 Speed feedback.
Used in ANSI to define the unique address for the drive by the serial interface. Any number which has a zero in it should not be used to
communicate with a single drive as these are used in addressing groups of drives.
Used in MODBUS RTU to define the unique address for the drive for the serial interface. Any number in the permitted range 0.1 to 24.7 can
be used as the drive address, 0.0 is a special address that broadcasts to all drives.
11.20 Parameter 0.46 assigned selector
ô
00.00 ~ 19.71
ð
3.02 RW Uni
11.21 Parameter 0.46 scaling
ô
0.000 ~ 9.999
ð
0.1 RW Uni
No. of decimal
places
Scaling
modifier (M)
0 0.1
1 1
2 10
3 100
etc. etc.
11.22 Initial displayed Parameter selector
ô
0.00 ~ 13.99
ð
0.05 Menu.Par RW Uni P
11.23 Serial comms. Address
ô
0.0 ~ 24.7
ð
1.1 Group.Unit RW Uni P 0.37