WEG CFW-10 - Page 65

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CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
The frequency reference is defined by the status of the
digital inputs programmed to multispeed as shown in
table below:
If a multi-speed reference (P124 to P131) is set to 0.0 Hz
and this same reference is selected, the drive will
decelerate to 0.0 Hz and will remain ready (RDY) while
the selection is kept.
The multispeed function has some advantages for the
stabibilty of the fixed preprogrammed references and
the immunity against electrical noises (digital
references and insulated digital inputs).
Range
[Factory Setting]
Parameter Description/Notes
P128
(1)
P133 to P134
Multispeed Ref. 5 [ 40.0 Hz ]
0.1 Hz (< 100 Hz);
1 Hz (> 99.9 Hz)
P129
(1)
P133 to P134
Multispeed Ref. 6 [ 50.0 Hz ]
0.1 Hz (< 100 Hz);
1 Hz (> 99.9 Hz)
P130
(1)
P133 to P134
Multispeed Ref. 7 [ 60.0 Hz ]
0.1 Hz (< 100 Hz);
1 Hz (> 99.9 Hz)
P131
(1)
P133 to P134
Multispeed Ref. 8 [ 66.0 Hz ]
0.1 Hz (< 100 Hz);
1 Hz (> 99.9 Hz)
DI1 or DI2 DI3 DI4 Freq. Reference
Open Open Open P124
Open Open 0 V P125
Open 0 V Open P126
Open 0 V 0 V P127
0 V Open Open P128
0 V Open 0 V P129
0 V 0 V Open P130
0 V 0 V 0 V P131
8 speeds
4 speeds
2 speeds
Table 6.4 - Frequency reference
Figure 6.5 - Time Diagram of the multispeed function
Acceleration
Ramp
Time
0 V
DI2
DI3
DI4
open
0 V
open
0 V
open
P124
P125
P126
P127
P128
P129
P130
P131
Output
Frequency