31
Installation Section 3-1
Note 1. During work at the panel, take care to ensure that no metal scraps enter
the PT.
2. The thickness of applicable operation panel is 1.6 mm to 4.8 mm. All fit-
tings must be tightened uniformly to a torque of 0.5 to 0.6 N
⋅m in order to
ensure water- and dust-resistance. Front sheet of NT31/NT31C may be
warped if the tightening is too strong or not uniformity. The panel must not
be soiled or warped, and must be able to support an installation that will
remain secure and strong.
3-1-3 Power Supply Connection
Connect a 24 VDC power supply to the power input terminals.
Note 1. Depending on how the power is switched ON/OFF, the entire system may
stop. Follow the correct procedure when switching the power ON/OFF.
2. Carefully check the wiring before switching ON the power.
3. Do not connect AC power to the DC terminals.
4. Use DC power supplies with low voltage fluctuation.
5. Do not perform a dielectric strength test.
6. If complying with EC directives (low voltage directives), use a power supply
with reinforced insulation (compliance with EC directives is planned for
June 1998).
Power Supply
The applicable power supply specifications are as follows.
Parts Used for Connection
Note For the connection to the power supply terminal block, twisted wires of 2 mm
2
or greater cross sectional area and M3.5 size crimp terminals must be used.
24V
DC
PRINTER PORT B PORT A
Item Value
Power supply 24 VDC
Allowable power sup-
ply voltage fluctuation
range
20.4 VDC to 26.4 VDC (24 VDC –15%, +10%)
Power supply voltage
capacity
15 W or more
24 VDC
Breaker
24 VDC
power supply
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