Safety Precautions; Precautions For Correct Use - Omron G3PX Manual

Safety Precautions

Precautions for Correct Use

Please observe the following precautions to prevent failure to
operate, malfunction, or undesirable effect on product performance.
Load
Only resistive loads can be connected to the G3PX. Contact your
OMRON representatives if it is necessary to connect inductive or
transformer loads.
Mounting
Pay utmost attention when mounting the G3PX so that the G3PX will
not fall thus resulting in injury.
Vertical Mounting
Horizontal Mounting
Note: In the case of flat mounting, the 30%
derating of the load current is required.
Close Mounting Example (Single-phase Models)
10 mm
10 mm
Note: Make sure that there is a space of at least 50 mm
vertically and at least 10 mm horizontally between
adjacent single-phase models.
86
Power Controllers
10 mm
50 mm
10 mm
G3PX
Wiring
Make sure that the lead wires are thick enough according to the
current.
Be sure to turn off power to the G3PX when wiring. The G3PX has
current leakage although the G3PX is turned off if the power supply
is connected to the G3PX, which may give an electric shock.
Do not wire power lines or high-tension lines along with the lines of
the G3PX in the same conduit, otherwise the G3PX may be
damaged or malfunction due to induction. Be sure to wire the lines of
the G3PX separated from power lines or high-tension lines or laid in
an exclusive, shielded conduit.
Tightening Torque
Apply the following tightening torque.
Output terminal:
20-A model: 1.47 N·m
40-A model: 2.45 N·m
60-A model: 4.12 N·m
Terminal block:
Single-phase model: 0.98 N·m
Be sure to protect the terminals with the protective cover after wiring.
Wiring for Error Detection
If a contactor is employed and operated with the relay output signal
of the G3PX for error detection, make sure that the G3PX is closer to
the power supply than the contactor.
Instruments
Instrument
Thermal type
Digital type displaying root-mean-square
values
Moving-iron type
Rectifier type
Multimeter
Digital multimeter
The instruments are used for displaying root-mean-square voltage
and current values of the AC circuitry.
Operation Monitoring
The level indicator just indicates the phase of the load and it is not
highly precise.
Ramp Setting
There is a decrease in ramp if the internal DUTY adjuster is turned
counterclockwise.
DUTY
100%
If the External DUTY Adjuster is used, set the Internal DUTY
Adjuster to 100%.
Remarks
Available
Not available (not precise
enough)
DUTY
10%