Application 4 - Analog Input With Dead Zone - WEG CFW100 Programming Manual

15.1.4 Application 4 - Analog input with dead zone

In this example, the output stay in 0Hz through the first 2.5V of analogic signal. The rotation of the motor only
happens if the Dead Zone parameter is disable (P230 = 0), as presented on
15.4 on page 15-5 are shown the parameters that are used to the correct setting.
Requirements:
Motor 1 HP, 220 V, 2.9 A, 1725 rpm, 60 Hz
Min. Frequency = 0 Hz
Max. Frequency = 45 Hz
Parametrization:
Analog Input
Min. Frequency
Max. Frequency
Max. Output Voltage
Interm. Output Voltage
Field Weak. Freq.
Intermediate Freq.
Selection source
Reference source
Rotation sel.
Signal function
Gain
Input signal
Offset
Dead Zone**
(*) Consult Chapter 7 COMMAND AND REFERENCES on page
(**) For AIx consult Chapter 9.1 ANALOG INPUTS on page 9-1
Example:
Output
Frequency
P134
(60 Hz)
45 Hz
Forward
P133
(0 Hz)
Reverse
-15 Hz
0 .................. 5 V ............ 10 V
0 ..................10 mA ......... 20 mA
4 ................ 12 mA ......... 20 mA
10 V ............ 5 V ............... 0
20 mA ....... 10 mA ............ 0
20 mA ....... 12 mA ........... 4 mA
Table 15.4: Parameters for application 4
AI1 AI2 Potenciometer
P133
P134
P142
P143
P145
P146
P220
P221 = 1 P221 = 2 P221 = 3
P223
P231 P236 P241
P232 P237 P242
P233 P238
P234 P239 P244
P230
7-1.
, for potenciometer this parameter is not available.
For AI1 set to 0-10 V (P233=0):
Analog input 10 V:
P018(%) =
Output Freq. = P018 x P134 = 75.0 % x 60.0 Hz = 45.0 Hz
Analog input 2.5 V:
P018(%) =
Output Freq. = P018 x P134 = 0.0 % x 60.0 Hz = 0.0 Hz
Analog input 0 V:
AIx Signal
P018(%) =
Output Freq. = P018 x P134 = -25.0 % x 60.0 Hz = -15.0 Hz
Figure 15.5: Result for application 4
APPLICATION EXAMPLES
Figure 15.5 on page
Value
0.0 Hz
60.0 Hz
100.0 %
50.0 %
60.0 Hz
30.0 Hz
0
According application*
0
0
1.000
- According application**
-25.0 %
1
(
10 V
x (100.0 %) + (-25.0 %)
10 V
(
2.5 V
x (100.0 %) + (-25.0 %)
10 V
(
0 V
x (100.0 %) + (-25.0 %)
10 V
Micro Mini Drives | 15-5
15-5. On Table
)
x 1.000 = 75.0 %
)
x 1.000 = 0.0 %
)
x 1.000 = -25.0 %
15