Omron FQM1-MMA21, FQM1-CM001 Wiring Precautions, Section, Inductive Loads, External Wiring

Models: FQM1-MMP21 FQM1-MMA21 FQM1-CM001

1 414
Download 414 pages 44.52 Kb
Page 109
Image 109
Inductive Loads

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.

IN

 

OUT

L

 

 

Diode

 

Relay output or

 

L

DC input

triac output

 

COM

 

COM Surge suppressor

OUT

Relay output or transistor output

+

COM Diode

Note Use surge suppressors and diodes with the following specifications.

Surge suppressor specifications

Diode specifications

 

 

Resistor: 50

Breakdown voltage: 3 times load voltage min.

Capacitor: 0.47 F

Mean rectification current: 1 A

Voltage: 200 V

 

External Wiring

Observe the following precautions for I/O wiring, power supply wiring, and 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.

FQM1 I/O wiring

FQM1 power supply and general control circuit wiring

Power lines

Low-current cables

Control cables

300 mm min.

 

Control cables

300 mm min.

 

Ground to 100 or less

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.

FQM1 power

 

 

supply and general

 

 

FQM1 I/O wiring control wiring

Power lines

Steel sheet metal

 

 

200 mm min.

Ground to 100 or less

86

Page 109
Image 109
Omron FQM1-MMA21 Wiring Precautions, Section, Inductive Loads, External Wiring, Surge suppressor specifications