120
6 WIRING
6.6 Output Wiring
Triac output
For output specifications of the terminal modules, refer to Page 188 Output specifications.
Handling of triac output
■Output terminal
Four triac output points are covered by one common terminal. The common terminal blocks can drive loads of different circuit
voltage systems (Example: 100 V AC and 24 V DC).
■Insulation of circuit
The internal circuit and the output element (triac) are insulated with photothyristors.
The common blocks are separated from one another.
■Display of operation
The LED turns on and the output triac is turned on when photothyristors are actuated.
■Response time
The response time until the output triac is turned on after the photothyristors are actuated (or shut off) is 1 ms or less, and the
response time until the output triac is turned off is 10 ms or less.
■Output current
Current of 0.3 A can flow per one output point. However, current of four output points should be 0.8 A (average of 0.2 A per
one point) to suppress temperature rise. When a load with a high rush current is frequently turned on or off, the mean-square
current should be 0.2 A or less.
■Open circuit leakage current
C-R absorbers are connected in parallel at the triac output terminal for turning off the triac. Thus, open circuit leakage currents
of 1 mA/100 V AC or 2 mA/200 V AC occurs. Since the triac output type has open circuit leakage currents, even after the triac
output is turned off, a small relay and a minute current load with low rated operation currents may continuously operate.
Therefore, the load should be equal to or more than 0.4 VA/100 V AC or 1.6 VA/200 V AC. For loads lower than these values,
connect the surge absorbers described later in parallel.
Load
100 V AC
U
Fuse
Y0
Y1
COM1
Load
200 V AC
U
Fuse
Y0
Y1
COM2
Terminal module
0.4 A
0.7
seconds
4 A
10
seconds
0.02
seconds
0.02 + 0.7 + 10
4
2
0.02 + 0.4
2
0.7
= 0.2 A
<Example>
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