6.4 Precautions on Wiring
6-35
6
If the resistance is too small, the amount of heat generation will increase, and a high
wattage will be required. Here, the wattage for a dummy resistor of 10 k
Ω
is calcu-
lated.
The wattage of the dummy resistor is as follows:
Normally, about three times the computed value is used to allow surplus wattage. A
3-W resistor would terefore be used.
6.4.2
AC Output Modules
1) Power Supply Phasing for Output Signals
Connect power supplies of the same phases to the common 1 and common 2 of the
AC I/O Module.
If power supplies of different phases are connected, overheating or fire may
occur.
Fig. 6.13 Power Supply Phasing for Output Signals
W
=
=
=
1
W
(Power
supply
voltage)
R
2
(100
V
)
10
k
Ω
2
CAUTION
Connect power
supply with the
same phase.
Output 1
Output 8
Common 1-1
Common 1-2
Output 9
Output 16
Common 2-1
Common 2-2
Fuses
Loads
Connect power
supply with the
same phase
100 VAC
(200 VAC)
