A3-15
IM 34M06C11-01E
A3.3.5
Interlocking
An interlock circuit is required when you handle particular outputs, such as those for the
forward and reverse rotation of a motor that must not turn on at the same time. In such
a case, installing an external interlock circuit allows one of the “b” contacts of the two
relay coils to cut off the other when energized. Figure A3.13 shows an example of an
interlock circuit.
Y00501
Y00502
R-MS
F-MS
F-
MS
R-
MS
Forward rotation
Reverse rotation
Contacts of the
FA-M3
IM
Thermal relay
TH-Ry
Thermal relay
F-MS
R-MS
FA030305.VSD
Figure A3.13 Example of an Interlock Circuit
Summary of Contents for FA-M3V e-RT3 Plus
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