Eliwell EWCFW-08, Руководство пользователя

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CHAPTER 3 - INSTALLATION AND CONNECTION
3.2.5.1 Digital Inputs as
Low Level Active
(S1:1 to OFF)
Connector XC1
1 DI1
2 DI2
3 DI3
4 DI4
5 GND
b) Example using a PLC - NPN transistor output
Connector XC1
1 DI1
2 DI2
3 DI3
4 DI4
5 GND
Figure 3.12 a) and b) - Digital inputs
as low logic level configuration
PLC output relay
COM
PLC output NPN GND (PLC)
In these options, the equivalent circuit at inverter side is
presented in the figure 3.13.
This option can be selected when a PLC is used with relay or
transistor output is used (low logic level to activate the DI).
a) Example using a PLC - relay output
Figure 3.13 - Equivalent circuit – Digital inputs as low logic level
XC1:1
XC1:2
DI2
DI1
1
2
2k
2k
10 V
10 V
SMD
Optocoupler
SMD
Optocoupler
+12 V
S1:1 in OFF
GND