WEG CFW501 V1.8X, Руководство по программированию, Страница: 110 / 192

Digital and Analog Inputs and Outputs
12-2 | CFW501
12
P0230 – Dead Zone of the Analog Inputs
Adjustable
Range:
0 = Inactive
1 = Active Factory
Setting:
0
Properties: cfg
Access groups
via HMI:
I/O
Description:
This parameter acts just for the analog inputs(AIx) programmed as frequency reference, and defines if the dead
zone in those inputs is Active (1) or Inactive (0).
If the parameter is configured as Inactive (P0230 = 0), the signal in the analog inputs will actuate on the
frequency reference from the minimum point (0 V / 0 mA / 4 mA or 10 V / 20 mA), and it will be directly related
to the minimum speed set in P0133. Check
Figure 12.1: (a) and (b) Actuation of the analog inputs with inactive
dead zone (a) and active dead zone (b) on page 12-2 .
If the parameter is configured as Active (P0230 = 1), the signal in the analog inputs will have a dead zone, where
the speed reference remains at the Minimum Speed value (P0133), even with the variation of the input signal.
Check
Figure 12.1: (a) and (b) Actuation of the analog inputs with inactive dead zone (a) and active dead zone
(b) on page 12-2 .
Reference
0...........................................10 V
0.........................................20 mA
4 mA...................................20 mA
10 V..........................................0
20 mA.....................................0
20 mA.................................4 mA
0...........................................10 V
0.........................................20 mA
4 mA...................................20 mA
10 V..........................................0
20 mA.....................................0
20 mA.................................4 mA
Reference
Signal AIx
Signal AIx
P0134 P0134
P0133 P0133
(a)
(b)
0 0
Figure 12.1: (a) and (b) Actuation of the analog inputs with inactive dead zone (a) and active dead zone (b)
In the case of analog inputs AI3 set for -10 V to +10 V (P0243 = 4), we will have curves similar to Figure 12.1:
(a) and (b) Actuation of the analog inputs with inactive dead zone (a) and active dead zone (b) on page 12-2 ;
except that when AI3 is negative, the direction of rotation will be the opposite.