WEG CFW300 V1.3X, Руководство по программированию

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Digital and Analog Inputs and Outputs
CFW300 | 12-11
12
The value FI = -20.0 % means that the motor will run in the opposite direction with a reference in module equal
20.0 % of P134, with the function of the FI signal for "Frequency Reference" (P221 = 4).
When P246 = 3, the digital input DI3 is defined for frequency input, regardless the value of P265, with operating
capacity in the band from 0 to 3000 Hz in 10 Vpp.
The time constant of the digital filter for the frequency input is defined by means of parameter P245.
12.5 DIGITAL INPUTS
Below is a detailed description of the parameters for the digital inputs.
P012 - Status of Digital Inputs
Adjustable
Range:
0 to FF (hexa)
Bit 0 = DI1
Bit 1 = DI2
Bit 2 = DI3
Bit 3 = DI4
Bit 4 = DI5
Bit 5 = DI6
Bit 6 = DI7
Bit 7 = DI8 Factory
Setting:
Properties: ro
Description:
Using this parameter, it is possible to view the status of the digital inputs, according to the IO's expansion
accessory connected. Refer to parameter P027 in
Section 6.1 INVERTER DATA on page 6-1 .
The P012 value is indicated in hexadecimal, where each bit of the number indicates the status of a digital input,
that is, if Bit0 is "0", DI1 is inactive; or if Bit0 is "1", DI1 is active, and so on, up to DI8. Besides, the determination
of DIx active or inactive takes into account the type of signal of DIx defined by P271.
The activation of DIx depends on the signal at the digital input and on P271, as per Table 12.5 on page 12-11 ,
which lists the threshold voltage for activation "V
TH
", the threshold voltage for deactivation "V
TL
" and the status
indication of DIx in parameter P012.
Table 12.5: Values of P012 for x from 1 to 8
Set in P271 Limit Voltage in DIx P012
NPN
V
TL
> 10 V Bit
x-1
= 0
V
TH
< 3 V Bit
x-1
= 1
PNP
V
TL
< 10 V Bit
x-1
= 0
V
TH
> 20 V Bit
x-1
= 1
NOTE!
Parameter P012 requires the user to know the conversion between binary and hexadecimal numerical
system.