Yaskawa 120 Series I/O Modules - Manual (Page 263)

6 Installation and Wiring
6.4.2 AC Output Modules
6-36
2) Protective Fuses
If using an Output Module, connect a fuse that complies with the load specifications in
series with the load.
A protective fuse built into the following Output Modules does not protect the
output element. If a fuse is not connected, a fire or damage to the device or out-
put circuits may occur if the load is short-circuited or the circuit overload.
The built-in fuse protects the Output Module from damage that may occur in the fol-
lowing cases:
• When over-voltage is applied to the load driving power supply terminal of the
Output Module.
• When foreign matter such as chips are in the Output Module and short-circuiting
the internal circuits.
Not installing external fuses may cause fire and damage to the output circuit and the
Module if an over-voltage or short-circuit occurs.
Fig. 6.14 Protective Fuses
3) Connecting Contacts to an Inductive Load
If connecting an inductive load to the AC Output Module, connect the surge absorber
in parallel with the inductive load to prevent surge voltage.
Failure to connect a surge absorber may result in damage to the AC Output
Module.
CAUTION
200 VAC
(100 VAC)
Output
Output
Common 1-1
Common 1-2
Loads
Fuses
CAUTION