Omron FQM1-CM001 Benutzerhandbuch
86
Wiring Precautions
Section 3-6
Inductive Loads
When an inductive load is connected to I/O, connect a surge suppressor or
diode in parallel with the load as shown below.
diode in parallel with the load as shown below.
Note
Use surge suppressors and diodes with the following specifications.
External Wiring
Observe the following precautions for I/O wiring, power supply wiring, and
power line wiring.
power line wiring.
• When multi-conductor signal cable is being used, do not combine I/O
wires and other control wires in the same cable.
• If wiring racks are parallel, allow at least 300 mm between the racks.
• If the I/O wiring and power cables must be placed in the same duct, they
must be shielded from each other using grounded steel sheet metal.
L
IN
COM
OUT
COM
OUT
COM
L
+
Diode
DC input
Relay output or
triac output
triac output
Surge suppressor
Relay output or
transistor output
transistor output
Diode
Surge suppressor specifications
Diode specifications
Resistor: 50
Ω
Capacitor: 0.47
µF
Voltage: 200 V
Breakdown voltage: 3 times load voltage min.
Mean rectification current: 1 A
FQM1 I/O wiring
FQM1 power supply and
general control circuit wiring
Power lines
Ground to 100
Ω or less
Low-current cables
Control cables
Control cables
300 mm min.
300 mm min.
FQM1 I/O wiring
FQM1 power
supply and general
control wiring
Power lines
Steel sheet metal
Ground to 100
Ω or less
200 mm min.