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3. The output terminals Y0~Y5, , Y0~Y13 of the transistor (NPN) model are connected
to the common terminals UP and ZP. See [Figure 8a]. The output terminals Y0~Y3,
Y0~Y13 on the transistor (PNP) model are connected to the common terminals UP
and ZP. See [Figure 8b].
4. Isolation circuit: The optical coupler is used to isolate signals between the circuit
inside PLC and input modules.
Relay (R) output circuit wiring
Emergency stop: Uses external switch
Fuse: Uses 5~10A fuse at the shared terminal of output contacts to protect the output circuit
Transient voltage suppressor (SB360 3A 60V): Extends the life span of contact.
1. Diode suppression of DC load: Used when in smaller power [Figure 10a]
2. Diode + Zener suppression of DC load: Used when in larger power and frequent On/Off
Incandescent light (resistive load)
Manually exclusive output: For example, Y3 and Y4 control the forward running and reverse
running of the motor, forming an interlock for the external circuit, together with the PLC
internal program, to ensure safe protection in case of any unexpected errors.
Absorber: Reduces the interference on AC load [Figure 11]
Transistor output circuit wiring
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