User`s guide

47
CHAPTER 3 - INSTALLATION
AND CONNECTION
This option can be selected when a PLC is used with PNP
transistor output (high logic level to activate the DI) or PLC
with relay output is used. For this last alternative you must
apply an external power supply 24 V +/- 10 %.
3.2.5.2
Digital Input as
High LevelActive
(S1:1 to ON)
Figure 3.14 a) and b
) - Configuration of the active digital inputs as
high logic level
In this option, the equivalent circuit at the inverter side is
presented in the figure 3.15.
b) Example using a PLC - PNP transistor output
a) Example using a PLC - relay output
Con
n
ector XC1
1
DI1
2
DI2
3
DI3
4
DI4
5
GND
24 V (internal PLC)
PLC output
PNP
GND(PLC)
PLC output relay
GND (source
external 24 V)
24 V (external)
Co
n
nector XC1
1
DI1
2
DI2
3
DI3
4
DI4
5
GND
Figure 3.15
-
Equivalent circuit - Digital inputs as high logic level
XC1:1
XC1:2
DI2
DI1
1
2
2k
10 V
10 V
SMD
Optocoupler
SMD
Optocoupler
+12 V
S1:1 in ON
2k
GND