428

Solid State Relays for Industrial I/O

G3TC

Precautions

!WARNING

Do not touch the relay while power is supplied or immediately after

G3TC is turned OFF. Doing so may result in burns.

!WARNING

Do not touch the load terminal of the G3TC immediately after the

power is turned OFF, otherwise an electric shock may be received

due to the residual charge of the built-in C/R circuit.

!WARNING

Be sure to turn OFF the power supply to the G3TC before wiring,

otherwise an electric shock may result.

!WARNING

Ensure that a short-circuit current does not flow on the load side of

the SSR, otherwise the G3TC may be damaged.

■ General Precautions

At OMRON, we are constantly working to improve the quality and

reliability of our products. SSRs, however, use semiconductors,

which are prone to malfunction. Be sure to use SSRs within their

rated value. Use the SSR only in systems that are designed with

redundancies, flame protection, counter measures to prevent opera-

tion errors, and other countermeasures to prevent accidents involv-

ing human life or fires.

1. Do not apply excessive voltage or current to the input or output

circuit of the G3TC. Doing so may result in malfunction or burning.

2. Do not connect the input and output circuits incorrectly. Doing so

may result in malfunction or burning.

3. Do not obstruct the flow of air around the G3TC. Abnormal heat-

ing of the G3TC may result in short-circuiting of output elements

and burning.

■ Correct Use

Before Actual Operation

1. In actual operation, the G3TC may cause accidents that were

unforeseeable at the theoretical stage. Therefore, it is necessary

to test the G3TC under a variety of conditions that are possible.

As for the characteristics of the G3TC, it is necessary to consider

the differences between G3TC models.

2. The ratings in this datasheet are for testing in a temperature

range of 15 to 30

°C, a relative humidity range of 25% to 85%, and

an atmospheric pressure range of 88 to 106kPa. When testing

operation, it is necessary to confirm correct operation not only

with the actual load that will be used, but also at the same ambi-

ent conditions as for actual operation.

3. The input circuitry does not incorporate a circuit protecting the

SSR from being damaged due to a reversed connection. Make

sure that the polarity is correct when connecting the input lines.

4. Only use the G3TC with loads that are within the rated values.

Using the G3TC with loads outside the rated values may result in

malfunction, damage, or burning.

5. Use a power supply within the rated frequency range. Using a

power supply outside the rated frequency range may result in

malfunction, damage, or burning.

6. No over-voltage absorption element is built in. Therefore, if the

G3TC is connected to an inductive load, be sure to connect an

over-voltage absorption element.

7. As protection against accidents due to short-circuiting, be sure to

install protective devices, such as fuses on the power supply side.

8. Keep wiring separate from high-voltage power lines and use wires

of an appropriate length, otherwise malfunction and damage may

result due to induction.

9. For a DC inductive load, a diode should be connected in parallel

with the load to absorb the counter electromotive force of the

load.

10.For an I/O mounting rack that is installed horizontally, use the

G3TC with loads that are within the following conditions.

4

3

2

2.1

0.64

1

0

−20

−30

0

20

45

60 70 80

100

40

Ambient temperature (

°C)

Horizontal Mounting

G3TC-OAC5, -OAC5A, -OAC15, -OAC15A, -OAC24, -OAC24A

4

3

2

2.7

0.64

1

0

−20

−30

0

20

45

60 70 80

100

40

Ambient temperature (

°C)

Horizontal Mounting

G3TC-ODC5, -ODC15, -ODC24