WEG CFW501 V1.8X Programming Manual page 114

Digital and Analog Inputs and Outputs
P0243 – Input Signal AI3
Adjustable
Range:
Properties:
Access groups
via HMI:
Description:
These parameters configure the signal type (if current or voltage) that will be read in each analog input, as well
as its variation range. Note that only AI3 has option 4 (-10 V to +10 V). In options 2 and 3 of the parameters, the
reference is inverted, that is, we have the maximum speed with the minimum signal in the Alx.
In the CFW500 plug-in module, DIP Switch S1:1 in ON configures input AI1 for signal in current. In the other
cases, refer to the installation, configuration and operation guide of the plug-in used.
and equation on page 12-6
P0233,
Signal
P0238
0 to 10 V
0 to 20 mA
4 to 20 mA
10 to 0 V
20 to 0 mA
20 to 4 mA
12
-10 to +10 V
For example: AIx = 5 V, Offset = -70.0 %, Gain = 1.000, with signal of 0 to 10 V, that is, AIx
(
5
AIx(%) = x (100 %) + (-70 %) x 1 = –20.0 %
10
Another example: AIx = 12 mA, Offset = -80.0 %, Gain = 1.000, with signal of 4 to 20 mA, that is, AIx
AIx = 16.
FE
(
12 – 4
AIx(%) =
16
AIx'= –30.0 % means that the motor will spin counterclockwise with a reference in module equal to 30.0 % of
P0134 if the signal AIx function is "Speed Reference".
In the case of filter parameters (P0235, P0240 and P0245), the value set corresponds to the time constant used to
filer the input signal read. Therefore, the filter response time is around three times the value of this time constant.
12-6 | CFW501
0 = 0 to 10 V / 20 mA
1 = 4 to 20 mA
2 = 10 V / 20 mA to 0
3 = 20 to 4 mA
4 = –10 V to +10 V
cfg
I/O
below summarizes the configuration and equation of the analog inputs.
Table 12.2: Alx configuration and equation
P0243 DIP Switch
0 0 OFF
0 0 ON
1 1 ON
2 2 OFF
2 2 ON
3 3 ON
- 4 OFF
(
(
x (100 %) + (–80 %) x 1 = –30.0 %
Equation AIx (%)
(
AIx(V)
AIx = x (100 %) + Offset x Gain
10 V
(
AIx(mA)
AIx = x (100 %) + Offset x Gain
20 mA
(
( (
(AIx(mA) – 4 mA)
AIx = x (100 %) + Offset x Gain
16 mA
(
AIx(V)
AIx = 100 % – x (100 %) + Offset x Gain
10 V
(
AIx(mA)
AIx = 100 % – x (100 %) + Offset x Gain
20 mA
(
(
(AIx(mA) – 4 mA)
AIx = 100 % –
16 mA
(
AIx(V)
AIx = x (100 %) + Offset x Gain
10 V
Factory
0
Setting:
Table 12.2: Alx configuration
(
(
(
(
(
(
(
x (100 %) + Offset x Gain
(
= 0 and AIx
ini
= 10.
FE
= 4 and
ini