Omron SYSMAC CS Series Operation Manual page 672

Specifications of Basic I/O Units and High-density I/O Units
Service life
(×10 4 )
240 V AC
(cosφ = 0.4)
Max. switching frequency: 1,800 times/h
Life Expectancy of C200H-OC221/222/223/224/225 Contact Output Unit
The C200H-OC221/222/223/224/225 Contact Output Unit uses OMRON's G6B-1174P-FD-US-M Relay. The
life of the G6B-1174P-FD-US-M Relay varies with the contact current and ambient temperature. Refer to the
following graphs to calculate this value, and be sure to replace the Relays before their service life expires.
Contact Current vs. Life Expectancy
Conditions
Switching frequency: 1,800 times/hour max.
Ambient temperature: 23°C
OMRON's H3BA
Timer (200 V AC)
OMRON's MA415A
Contactor (200 V AC)
Contact current (normal current) (A)
Note 1. If the Contact Output Unit is panel-mounted, the temperature inside the panel represents the ambient
temperature.
2. The life of the Relay at an ambient temperature of 55°C is one-fifth the life of the Relay at room tem-
perature (0° to 40°C).
Inductive Load
The life of the Relay varies with the load inductance. If any inductive load is connected to the Contact Output
Unit, use an arc killer with the Contact Output Unit using an inductive load.
Be sure to connect a diode in parallel with every DC inductive load that is connected to the Contact Output
Unit.
634
Service Life with AC Load
120 V AC, resistive load
240 V AC, resistive load
120 V AC
(cosφ = 0.4)
Contact current (A)
30 V DC, L/R = 40 ms
(electromagnetic valve) 250 V AC, cosφ = 0.4
30 V DC, L/R = 7 ms
(HK, MM, and MY
Hinge-type Relay)
250 V AC, cosφ =
130 V DC, L/R = 0
OMRON's
MY4 Relay
(200 V AC)
Electromagnetic
valve (250 V AC),
cosφ = 0.08 to
0.1)
24 V DC τ = 7 ms
Service life
(×10 4 )
100 to 120 V DC,
τ = 7 to 40 ms
Ambient Temperature vs. Life
Expectancy
Conditions
Switching frequency: 1,800 times/hour max.
2 A at 250 V AC, resistive load
2 A at 30 V DC, resistive load
1 A at 250 V AC, inductive load
(cosφ = 0.4)
1 A at 30 V DC, inductive load
(L/R = 7 ms)
2 A at 250 V AC, inductive
load (cosφ = 0.4)
2 A at 30 V DC, inductive
load (L/R = 7 ms)
Ambient temperature (˚C)
Appendix A
Service Life with DC Load
24 V AC, resistive load
Contact current (A)
1 A at 250 V AC,
resistive load
1 A at 30 V DC,
resistive load