3-1 Installing the PT
3-5
2.
Secure the panel mounting brackets from the back of the panel, as shown in the following
diagram.
Insert the catch on each bracket into the square hole on the PT, and secure the PT to the
panel by tightening the screws with a Phillips screwdriver while gently pulling in the PT.
Note · Do not allow metal particles to enter the PT while work is being performed on the panel.
· The allowable thickness of the panel for mounting is between 1.6 and 4.8 mm.
Secure the mounting bracket with a uniform tightening torque of between 0.5 and 0.6 N×m
to keep the PT waterproof and dustproof.
The front sheet may become distorted if the tightening torque is more than the specified
limit or not uniform. Always use a panel that is clean, undistorted, and strong enough to
adequately withstand mounting the PT.
3-1-4 Connecting the Power Supply
Connect a 24-VDC power supply to the power input terminals.
Note
· Do not connect an AC power supply to the power terminals.
· Use a DC power supply with low voltage fluctuation.
· Do not perform a dielectric strength test.
· To conform to the Low Voltage Directive in the EC Directives, use a power supply with re-
inforced insulation.
· Power Supply
The following table shows the specifications for the power supply that can be connected. De-
termine power supply specifications that meet the power supply capacity requirements.
Item Value
Power supply voltage 24 VDC
Allowable voltage range 20.4 to 27.6 VDC (24 VDC ±15%)
Power supply capacity 20 W min
Functional ground
Breaker
24-VDC
power supply
24-VDC
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