B7AH-R6D53 datasheet(52/121 Pages) OMRON

52 / 121 page

G70D-B7A

Precautions

General

Electric Shock

Do not touch charged parts of relay terminals or socket terminals

while power is supplied. Doing so may result in electric shock.

Wiring

Be sure to turn the power OFF before performing wiring. Do not

touch the terminal block while power is supplied unless the cover is

mounted. Doing so may result in electric shock.

Be sure to apply the specified voltage to input terminals. Applying an

incorrect voltage may prevent the product from operating with its

rated performance characteristics, or may cause damage or burn-

ing.

Relay Models

Do not use the product for loads that exceed the rated values for

switching capacity (e.g., switching voltage and switching current). If

the ratings are exceeded the product may not be able to operate

with its rated performance characteristics due to factors such as

insulation failure, contact failure, or contact welding. It may even

result in damage to or burning of the relay.

The lifetime of relays varies significantly with the switching condi-

tions. Be sure to confirm the required performance characteristics

by testing the relay under actual operating conditions, and use the

relay at a frequency at which it can perform with the required perfor-

mance characteristics. Continued use of the relay in a state where it

cannot maintain the rated characteristics may eventually result in

damage to the insulation between circuits or burning of the relay.

Do not use the product in locations subject to flammable or explo-

sive gases. Doing so may result in fire or explosion due to the arcing

that accompanies the switching mechanism and heating up of the

relay.

No-contact Output (Transistor, Power MOS FET Relay, and

SSR Output)

Do not use the product for loads that exceed the rated output cur-

rent. Doing so may damage output elements and result in short-cir-

cuiting or open circuits.

When using the product for DC inductive loads, connect a diode that

will prevent reverse voltages. Not doing so may damage output ele-

ments and result in short-circuiting or open circuits.

Correct Use

Link Terminals with Relay Outputs

This Link Terminal is for relay output.

G70D-R6R

j1-B7A Link Terminals use 24-VDC G6D-1A Relays

and G70D-R6M

j1-B7A Link Terminals use 24-VDC G3DZ-2R6PL

Relays.

When replacing relays, use the yellow Relay Removal Tool at the

corner of the screw terminal (except for G7TC).

Do not mount or dismount relays with the power supplied.

Opening the Front Cover (Rotating Type):

Hold the two bottom corners of the front cover (labelled A in the dia-

gram below), and lift upwards to open.

Replacing Relays

Do not mount or dismount relays with the power supplied. Doing so

may result in electric shock or malfunction.

When replacing relays, use the yellow Relay Removal Tool at the

corner of the screw terminal (except for G7TC).

Relays must be inserted vertically so that the legs do not bend. Not

inserting relays properly may result in malfunction or heating.

Wiring

Be sure that terminal polarity, wiring between the transmission lines

and power supply, and the voltage specifications for I/O power sup-

plies are correct.

Do not mount or remove connectors with the power supplied. Doing

so may result in malfunction.

Locks for Connecting Cables

Ensure that the connectors for connecting cables are securely

locked before supplying power.

Installation

Do not install the product in the following locations. Doing so may

result in failure or malfunction.

• Locations subject to direct sunlight

• Locations subject to temperatures outside the range 0 to 55°C

• Locations subject to humidity outside the range 10% to 90%, or

locations subject to condensation as the result of severe

changes in temperature

• Locations subject to corrosive or flammable gases

• Locations subject to dust (especially iron dust) or salts

• Locations subject to shock or vibration

• Locations subject to exposure to water, oil, or chemicals

Tightening Torque for Mounting Screws

Tighten the mounting screws for all Units to the specified torques to

prevent malfunction.

• Tightening torque for terminal screws:

0.78 to 1.18 N

⋅m

• When directly mounting to panel with screws:

0.59 to 0.98 N

⋅m

Cleaning

Do not use thinners to clean the product. Doing so will dissolve or

discolor the surface of the product.

Mounting

Be sure not to drop the product or apply excessive shock to the

product when mounting. Doing so will result in failure or malfunction.

Disassembly

Do not attempt to disassemble, repair, or modify the product. Any

attempt to do so may result in incorrect operation or electric shock.

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