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G7L-2A-BUB-CB Datasheet(PDF) 16 Page - Omron Electronics LLC

Part No. G7L-2A-BUB-CB
Description  General Purpose Relay
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Manufacturer  OMRON [Omron Electronics LLC]
Direct Link  http://www.omron.com/index3.html
Logo OMRON - Omron Electronics LLC

G7L-2A-BUB-CB Datasheet(HTML) 16 Page - Omron Electronics LLC

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General Purpose Relay
■ Correct Use
To preserve initial performance, do not drop or otherwise subject the
power relay to shock.
The case is not designed 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,
2,H2S, or organic gas.
Do not allow a voltage greater than the maximum allowable coil volt-
age to be applied continuously.
Do not use the power relay outside of specified voltages and currents.
Do not allow the ambient operating temperature to exceed the speci-
fied limit.
Although there are not specific limits on the installation site, it should
be as dry and dust-free as possible.
Using in an atmosphere of high humidity and corrosive gas may
deteriorate its performance characteristic caused by condensation or
corrosive products, resulting in failure or burn damage of the Relay.
PCB terminal-equipped relays weigh approximately 100 g. Be sure
that the PCB is strong enough to support them. We recommend
dual-side through-hole PCBs to reduce solder cracking from heat
Relays with test buttons must be mounted facing down. Be careful
not to touch the test button accidentally. Doing so may turn on the
Be sure to use the test button for test purposes only (with test-button
models). The test button is used for Relay circuit tests, such as circuit
continuity tests. Do not attempt to switch the load with the test button.
Soldering PCB Terminals
Do not perform automatic soldering, but solder manually.
Do not wash down the entire Relay because it does not have an air-
tight construction.
Refer to the following table when connecting a wire with a crimp style
terminal to the G7L.
Allow suitable slack on leads when wiring and do not apply excessive
force to the terminals.
Tightening torque;
0.78 to 1.18 N·m
Contacts: 0.98 to 1.37 N·m
When connecting with screws, if the screws are not sufficiently tight-
ened, the lead wire can become detached and may lead to abnormal
heating or fire caused by faulty contact.
Do not apply excessive force when mounting or dismounting the
faston receptacle. Insert and remove terminals carefully, one at a
time. Do not insert terminals at an angle, or insert / remove multiple
terminals at the same time.
Do not connect to the terminals by soldering. Use #250 faston or
positive-lock connectors;
*the numbers shown in parentheses are for air-feeding.
Note: 1. The current should be 25A when using receptacle terminals.
2. Use receptacle terminals or positive housing for cable wiring.
Top Bracket Type
Mounting torque; 0.98 N·m
Tighten with to M4 screws when mounting.
DIN Track Mounting Adapter and Front-Connecting Socket
The DIN Track Mounting Adapter and Front-connecting Socket can
be mounted on the G7L with just one hand and dismounted with
ease using a screwdriver.
To support the G7L mounted on a DIN Track Mounting Adapter or
Front-connecting Socket, use the PFP-M End Plate. Put the End
Plate onto the DIN Track Mounting Adapter or Front-connecting
Socket so that the surface mark of the End Plate faces upwards.
Then tighten the screw of the End Plate securely with a screwdriver.
Screw Mounting
Screw-mount the DIN Track Mounting Adapter or Front-connecting
Socket securely after opening screw mounting holes on them.
When cutting or opening holes on the panel after the Front-connect-
ing Socket is mounted, take proper measures so that the cutting
chips will not fall onto the Relay terminals. When cutting or opening
holes on the upper part of the panel, mask the Front-connecting
Socket properly with a cover.
Operating Coil
• As a rule, either a battery or a DC power supply with a maximum
5% ripple is used for the operating voltage for DC relays. Before
using a rectified AC supply, confirm that the ripple is not greater
than 5%. Ripple greater than this can lead to variations in the oper-
ating and reset voltages.
As excessive ripple can generate beats, the insertion of a
smoothing capacitor is recommended as shown below.
• When driving a transistor, check the leakage current and connect a
bleeder resistor if necessary.
• Momentary voltage drops on coil input voltage should not exceed
one second duration after contact mating with no shock or vibra-
Screw Terminals
Front Connecting Socket
Receptacle Terminals*
Positive Housing
#250 terminals
(width: 6.35 mm)
AMP 170333-1 (170327-1)
AMP 170334-1 (170328-1)
AMP 170335-1 (170329-1)
AMP 172076-1 natural color
AMP 172076-4 yellow
AMP 172076-5 green
AMP 172076-5 blue

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