Chapter 4 Installation and Wiring
4-95
⑥
Y0.2 can not be connected to a power supply directly. It must be connected to a load.
ZP
Y0.2
UP
+
NPN transistor output (sinking)
DC power supply
ZP
Y0.2
UP
+
DC power supply
PNP transistor output (sourcing)
⑦
Mutually exclusive output: For example, Y0.3 controls the clockwise rotation of the motor, and Y0.4 controls the
counterclockwise rotation of the motor. The interlock circuit which is formed, and the program in the PLC
ensure that there are protective measures if an abnormal condition occurs.
TRIAC Output Circuit
TRIAC terminals only can be applied to alternating current which passes through a load. The maximum current which can
passes through every TRIAC terminal is 0.5 A, and the maximum current which can passes through every common
terminal is 2 A.
TRIAC output circuit
①
Emergency stop: An external switch is used.
②
Fuse: To protect the output circuit, a fuse having a breaking capacity in the range of 5 A to 10 A is connected to
the common terminal.
③
Alternating-current power supply.
④
Mutually exclusive output: For
example, Y0.0 controls the clockwise rotation of the motor, and Y0.1 controls the
counterclockwise rotation of the motor. The interlock circuit which is formed, and the program in the PLC
ensure that there are protective measures if an abnormal condition occurs.
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