Delta AH02HC-5A, Hardware Manual

Page: 142 / 229

AH500 Hardware Manual
5.5.2.4
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.

The TRIAC output circuit
①
Emergency stop: An external switch is used.
②
Fuse: To protect the output circuit, a fuse having a breaking capacity within the range
between 5 A and 10 A is connected to the common terminal.
③ Alternating-current power supply.
④
Mutually exclusive output: 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.
⑤
Electromagnetic contactor through which the alternating current passes: A resistor and a
capacitor are connected in parallel to absorb the surge voltage which occurs when the load is
OFF.
⑥
Bulb (neon lamp) through which the alternating current passes: A thermistor is connected in
series to absorb the surge current which occurs when the load is ON.
5-29