WEG CFW300 V1.3X, Programming Manual

Page: 53 / 157

Logical Command and Speed Reference
CFW300 | 7-7
7
7.2.1 Limits for Frequency Reference
Although the parameters to adjust the reference have a wide range of values (0 to 400.0 Hz), the value applied
to the ramp is limited by P133 and P134. Therefore, the values in module out of this range will have no effect on
the reference.
P133 - Minimum Frequency Reference
Adjustable
Range:
0.0 to 400.0 Hz
Factory
Setting:
3.0 Hz
Properties:
P134 - Maximum Frequency Reference
Adjustable
Range:
0.0 to 400.0 Hz Factory
Setting:
66.0 (55.0) Hz
Properties:
Description:
Limits for frequency reference of the inverter. These limits are applied to any reference source, even in case of
"13-bit speed".
7.2.2 Speed Reference Backup
P120 - Speed Reference Backup
Adjustable
Range:
0 = Inactive
1 = Active
2 = Backup by P121 Factory
Setting:
1
Properties:
Description:
This parameter defines the operation of the backup function of the speed reference from one of the options
active (P120 = 1), inactive (P120 = 0) and by P121 (P120 = 2). This function, in turn, determines the form of
backup of the digital references of the sources: HMI (P121), E.P., Serial/USB (P683), according to Table 7.2 on
page 7-7 .
Table 7.2: Options of parameter P120
P120 Reference Initial Values at the Enabling or Power-Up
0 Value of P133
1 Last adjusted value
2 Value of P121
If P120 = Inactive, the inverter will not save the speed reference value when it is disabled. Thus, when the
inverter is enabled again, the speed reference value will become the frequency minimum limit value (P133).
If P120 = Active, the value set in the reference is not lost when the inverter is disabled or powered down.
If P120 = Backup by P121, the reference initial value is fixed by P121 at the enabling or power-up of the inverter.