User Manual
EM303A General Purpose Inverter
34
3.3.2.1
Wiring the Analog Input Terminals
Wiring terminals VS and VF through analog voltage signal:
When analog voltage input signal is as the external power supply, wire terminals
VS and VF as per the method shown in Figure 3-12-a.
When analog voltage input signal is as the potentiometer, wire terminals VS and
VF as per the method shown in Figure 3-12-b.
(a) (b)
Figure 3-12 Wiring of Terminals VS and VF
Wiring terminals IS and IF through analog current signal:
Figure 3-13 Wiring of Terminals IS and IF
3.3.2.2
Wiring Multi-function Input Terminal
The multi-function input terminals of EM303A adopt full bridge rectifier circuit.
Terminal PLC is the common terminal of X1~X7. The current passed through the
PLC terminal can be forward (NPN Mode) or reverse (PNP mode), so that it is
flexible to connect terminals X1-X7 to external components. The typical wirings are
as shown in the followings:
NPN and PNP wirings of multi-function numeric input terminals(X1
~
X7)
(See F2 Group for parameter setting)
A.
Dry contact wiring
mode
B.
NPN mode with external
supply
C.
PNP mode with external
supply