Mitsubishi Electric MELSEC iQ-F Series User Manual page 108

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 element or the PCB. To prevent
this, a protection fuse should be inserted at the output.
Load
Y0
Fuse
COM1
■Minute current load
C-R absorbers are connected in parallel at the triac output circuit for turning
off the triac. When a minute current load of 0.4 VA or less/100 V AC or 1.6
VA or less/200 V AC is connected, a surge absorber must be connected in
parallel with the load. Select a surge absorber with the rated voltage that is
suitable for the output used. For other specifications, refer to the following.
Standard
Electrostatic capacity: Approx. 0.1 μF
Resistance: Approx. 100 to 200 Ω
■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.
Interlock
U U
U
PLC output
element
■In-phase
PLC output contacts (*1) should be used in an "in-phase" manner.
*1
U
*1
U
*1
U U
6 WIRING
106
6.6 Output Wiring
Terminal
module
Limit of forward
rotation
Forward
rotation
Reverse
rotation
Limit of reverse
rotation
*1
U
Minute current load
Surge
U U
absorber