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Precautions
■ Handling
? To preserve performance, do not drop or otherwise subject the G7J
relay to shock.
? The case is not designated to be removed during normal handling
and operation. Doing so may affect performance.
? Use the power relay in a dry environment free from excessive dust,
SO 2 , H 2 S, or organic gas.
■ Connection
Refer to the diagram below when connecting a wire to the screw ter-
minals on G7J.
7.6
(0.299)
? Do not allow a voltage greater than the maximum allowable coil
voltage to be applied continuously.
? Do not use the relay outside of specified voltages and currents.
7 (0.276)
8.8
(0.346)
? Do not allow the ambient operation temperature to exceed the
specified limit.
■ Microloads
The G7J is used for switching power loads. Do not use the G7J for
switching minute loads, such as signals.
■ Installation
Although there are not specific limits on the installation site, it should
be as dry and dust-free as possible.
PCB terminal-equipped relays weigh approximately 140 g. Be sure
that the PCB is strong enough to support them. OMRON recom-
mends dual-side through-hole PCBs to reduce solder cracking from
heat stress.
Mount the G7J with its test button facing downwards. The relay may
malfunction due to shock if the test button faces upwards. Be careful
not to press the test button by mistake, because the contacts will
actuate (ON) if the test button is pressed.
If the normal mounting direction is not used, carbides or powder from
contact abrasion that results from load switching will accumulate
inside the relay. If the relay is used past its endurance in this state,
insulation failure between circuits of different polarity or relay burning
may occur.
Be sure to use the test button for test purposes only. The test button
is used for relay circuit tests, such as a circuit continuity test. Do not
attempt to switch the load with the test button.
If a voltage is applied to the coil, the test button will retract in an ON
state (i.e., an excited state).
■ Soldering PCB Terminals
Be sure to solder the PCB terminals manually only. In the case of
automatic soldering, some flux may stick to the test button and the
relay. As a result, the G7J may malfunction.
■ Cleaning PCB Terminals
PCB terminals have semi-sealed construction which prevents flux
from penetrating into the relay base housing due to capillary action.
This type of relay cannot be immersed for cleaning. Do not wash with
any water or detergent.
4.5
(0.177)
M3.5
Allow suitable slack on leads when wiring, and do not subject the ter-
minals to excessive force. Tighten the screw terminals to a torque of
0.78 to 1.18 N-m.
■ Quick-connect Terminals
Do not impose excessive external force on the G7J in the horizontal
or vertical directions when inserting the G7J to the quick-connect ter-
minals or when removing the terminals from the G7J. Do not attempt
to insert or pull out more than one terminal at a time.
General Purpose Relay
G7J
327
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