WEG CFW300 V1.3X, Programming Manual

Page: 56 / 157

Logical Command and Speed Reference
7-10 | CFW300
7
Acceleration
ramp
Time
Active
Active
Active
Inactive
Inactive
Inactive DI3 or DI7
DI4 or DI8
DI1 or DI2
DI5 or DI6
P124
P126
P127
P128
P129
P130
P131
Output
frequency
P125
Figure 7.3: Operating graph of the Multispeed function
Table 7.3: Multispeed frequency reference
8 Referency
4 Referency
2 Referency
DI1 or DI2 or DI5 or DI6 DI3 or DI7 DI4 or DI8 Frequency Reference
Inactive Inactive Inactive P124
Inactive Inactive Active P125
Inactive Active Inactive P126
Inactive Active Active P127
Active Inactive Inactive P128
Active Inactive Active P129
Active Active Inactive P130
Active Active Active P131
7.2.4 Reference via Electronic Potentiometer
The Electronic Potentiometer function (E.P.) allows the frequency reference to be set by means of two digital inputs
(one to increment it and another to decrement it).
In order to enable this function, you must first configure the referency reference via E.P., program P221 = 7 and/or
P222 = 7. After enabling this function, just program two digital inputs (P263 to P266) in 11 or 33 (Accelerate E.P.)
and 12 or 34 (Decelerate E.P.).
Figure 7.4 on page 7-11 shows the operation of E.P. function of three digital inputs (Accelerate E.P., Decelerate
E.P. and Run/Stop). In this example, the reference reset is done with the inverter disabled and activating both
Accelerate and Decelerate E.P. inputs. Besides, you can monitor the action of the inputs individually, as well as
the action of the reference backup (P120 = 1) when the Run/Stop command is opened and closed again.