Yaskawa 120 Series I/O Modules - Manual (Page 272)

6.4 Precautions on Wiring
6-45
6
6.4.4 DC Output Modules
1) 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 Module from damage that may occur in the following
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.
Fig. 6.25 Protective Fuses
CAUTION
Output
Output
-Common 1
+Common 1
Fuses Loads
12 VDC
(24 VDC)