WEG CFW500 V1.8X, Руководство по программированию, Страница: 64 / 172

Logical Command and Speed Reference
7-8 | CFW500
7
In digital inputs (DIx), on the other hand, the reference is defined according to the function predefined for P0263
to P0270.
The speed reference via analog inputs and frequency input is according to the signal, gain and offset parameters
P0230 to P0250. The full scale of the reference is always by P0134, that is, maximum value in AIx is equivalent to
the speed reference equal to P0134.
The digital references Serial/USB, CANopen, DeviceNet and SoftPLC act on a standardized scale called “13-
bit speed”, where the value 8192 (2
13
) is equivalent to the motor rated speed by P0403. Those references are
accessed by parameters P0683, P0685 and system marker of the SoftPLC, respectively.
The digital references, though, have a different scale and the speed reference parameters with their range from
0.0 to 500.0 Hz, according to previous descriptions. The frequency value on the ramp input (P0001) is always
limited by P0133 and P0134. For example, the JOG reference is given by P0122; this parameter may be set in
up to 500.0 Hz, but the value applied to the ramp input as reference will be limited by P0134 when the function
is executed.
Table 7.1: Summary of the scales and resolutions of the speed references
Reference Full Scale Resolution
Analog inputs (AIx). - P0134 to P0134 10 bits or (P0134 / 1024).
Communication networks and SoftPLC. -500.0 Hz to 500.0 Hz Speed 13 bits (P0403 / 8192).
HMI parameters. -500.0 Hz to 500.0 Hz 0.1 Hz
7.2.1 Speed Reference Limits
Although the parameters to adjust the reference have a wide range of values (0 to 500.0 Hz), the value applied
to the ramp is limited by P0133 and P0134. Therefore, the values in module out of this range will have no effect
on the reference.
P0133 – Minimum Speed Reference
Adjustable
Range:
0.0 to 500.0 Hz Factory
Setting:
3.0 Hz
P0134 – Maximum Speed Reference
Adjustable
Range:
0.0 to 500.0 Hz Factory
Setting:
66.0 (55.0) Hz
Properties:
Access Groups
via HMI:
BASIC
Description:
Limits for the inverter speed reference. Those limits are applied to any reference source, even in the case of
13-bit speed reference.
7.2.2 Speed Reference Backup
P0120 – Speed Reference Backup
Adjustable
Range:
0 = Inactive
1 = Active
2 = Backup by P0121 Factory
Setting:
1
Properties:
Access Groups
via HMI: