G3MC G3MC
229
Precautions
General Precautions
Be
sure to turn of
f power to
the SSR before wiring the SSR, other
-
wise
an electric shock may be received.
Do
not touch the
terminals of the SSR while power is being supplied
to
the SSR. The terminals are charged with the power
,
and an elec
-
tric
shock may be received by touching the terminals.
The
built-in capacitor may have a residual voltage after the SSR is
turned
of
f. Be sure to discharge the residual voltage before touching
the terminals of the SSR, otherwise an electric shock may be re-
ceived.
Mounting
1. Make
sure that no excessive voltage or current is imposed on
or flows to the input or output circuit of the SSR, otherwise the
SSR
may malfunction or burn.
2. Solder
the terminals of the SSR properly under the required
soldering conditions. The SSR may be abnormally heated
and burn if power is supplied to the terminals soldered
incorrectly.
3. Do not short-circuit the load of the SSR while power is
supplied to the SSR. Do not short-circuit the power supply
through
the SSR. The SSR may be damaged, malfunction, or
burn
if the load or power supply is short-circuited.
Correct Use
The
terminals of the SSR
are highly heat-conductive. Each terminal
must
be soldered within 10 s at 260
°
C or within 5 s at 350
°C.
The SSR is of a thin-profile construction. T
o maintain the vibration
resistance
of the SSR, make sure that the space between the SSR
and PCB is 0.1 mm maximum. Lifting of the PCB can be prevented
by setting the hole diameter of the PCBs on both sides slightly
smaller
than the actual terminal dimension.
Select the model without the zero-cross function when using the
Unit
for phase control output.
The
casing works as a heat sink. When mounting two or more Units
closely, make sure that the Units are properly ventilated by taking
ambient temperature rises into consideration. If Units are closely
mounted
and used in places with no ventilation, the
load current of
each
Unit must be 1/2 of the rated load current.
Fusing characteristics
The
G3MC has a
function that forces an open mode failure when an
overcurrent
exceeds the rated value. The fusing characteristics of
the G3MC, however, are not the same as those of a general-use
glass fuse. Machines that use the G3MC must be provided with a
safety
device, such as a fuse
or breaker
, and ON-OFF tests or short-
circuit
tests must be implemented to
confirm the following items and
detailed influences. Users must determine test conditions and im-
plement
tests on reliability as required by the machine.
1.
Life test under continuous electric current
2. On-off cycle test
3.
Influence by ambient temperature
4.
Influence by power source frequency
5.
Influence by power source voltage fluctuation
Note: Contact your local OMRON sales office for more detailed
information.
Protective Element
No overvoltage absorption element is built in. Therefore, if the
G3MC is connected to an inductive load, be sure to connect the
overvoltage
absorption element.
G3MC-jjj
PL (without Zero cross function)
Phototriac
Input Protective
element
(MOV) Power
supply
Load
G3MC-jjj
P (with Zero cross function)
Phototriac
Input Protective
element
(MOV) Power
supply
Load
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To
convert millimeters into inches, multiply by 0.03937. T
o convert grams into ounces, multiply by 0.03527.
Cat. No. J108-E1-1B