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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 1-B7A Link Terminals use 24-VDC G6D-1A Relays
and G70D-R6M 1-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.
50
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.
G70D-B7A
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