Reference Via Electronic Potentiometer - WEG CFW100 Programming Manual

Logical Command and Speed Reference
7
DI1 or DI2 or DI5 or DI6
Inactive
Inactive
Inactive
Inactive
Active
Active
Active
Active

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
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.
7-10 | CFW100
Output
frequency
P128
P127
P126
P125
P124
DI1 or DI2
DI5 or DI6
DI3 or DI7
DI4 or DI8
Figure 7.3: Operating graph of the Multispeed function
Table 7.3: Multispeed frequency reference
DI3 or DI7
Inactive
Inactive
Active
Active
Inactive
Inactive
Active
Active
shows the operation of E.P. function of three digital inputs (Accelerate E.P., Decelerate
P131
P130
P129
8 Referency
4 Referency
DI4 or DI8
Inactive
Active
Inactive
Active
Inactive
Active
Inactive
Active
Return Advance
Acceleration
ramp
Time
Active
Inactive
Active
Inactive
Active
Inactive
2 Referency
Frequency Reference
P124
P125
P126
P127
P128
P129
P130
P131