Mitsubishi MELSEC iQ-F FX5UC, User Manual

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96
6 WIRING
6.6 Output Wiring
■
Output current
Maximum load differs for each module. For specifications of each module, refer to the following.
For output specifications of the CPU modules, refer to

Page 24 Output Specifications.
For output specifications of the I/O modules, refer to

Page 146 Output specifications.
For output specifications of the terminal modules, refer to

Page 162 Output specifications.
When driving a semiconductor element, carefully check the input voltage characteristics of the applied element.
■
Open circuit leakage current
0.1 mA or less.
Wiring precautions
■
Protection circuit for load short-circuiting
A short-circuit at a load connected to an output terminal could cause burnout at the output device or the PCB.
To prevent this, a protection fuse should be inserted at the output. Use a load power supply capacity that is at least 2 times
larger than the load current.
■
Contact protection circuit for inductive loads
When an inductive load is connected, connect a diode (for commutation) in parallel with the load as necessary.
The diode (for commutation) must comply with the following specifications.
■
Interlock
For loads such as forward/reverse contactors, etc., where a hazardous condition could result if switched ON simultaneously,
an external interlock should be provided for interlocking along with an interlock in the PLC program as shown below.
Standard
Reverse voltage 5 to 10 times the load voltage
Forward current Load current or more
PLC
Y
COM0
Load
Fuse
Sink output type
COM0
Y
+V0
PLC
Load
Fuse
Source output type
+V0
PLC
Inductive load
Fuse
Sink output type
Y
COM0
COM0
PLC
Inductive load
Fuse
Source output type
Y
+V0
+V0
Limit of forward
rotation
Limit of reverse
rotation
Forward
rotation
Reverse
rotation
Sink output type
Interlock
PLC output
element
Limit of forward
rotation
Limit of reverse
rotation
Forward
rotation
Reverse
rotation
Source output type
Interlock
PLC output
element