SMC Networks HRR010-A-10 Series, Operation Manual

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HRX-OM-X084
Chapter 3 Transport and Setting Up
3.3 Installation HRR Series
3-8
3.3.2 Electrical wiring
*:For the product operation in the UL compliant conditions, please refer to "Installation/Operation in
accordance with the UL standard" in the next page.

Do not modify the internal electrical wiring of the product. Incorrect
wiring may cause electric shock or fire. Also, modifying the internal
wiring will void the product’s warranty.

NEVER connect the ground to water line, gas pipe or lightning
conductor.

The installation of electrical equipment and wiring work should be
performed only by personnel with sufficient knowledge and
experience.
 Be sure to shut off the user’s power supply. Wiring with the product
energized is strictly prohibited.
 The wiring must be conducted using cables complying with “Table
3-3
” and firmly secured to the product to prevent the external force of
cables being applied to the terminals. Incomplete wiring, or improper
securing of wiring, may cause electrical shock or excessive heat and
fire.

Ensure a stable power supply with no voltage surges.

Ensure that an earth leakage breaker is used in the power supply of
the product. See “Table
3-3
”.

Use a power supply suitable for the specifications of the product.
Use a power supply of over voltage category 3 (IEC60664-1)*.

Be sure to connect the ground connection.

Ensure that a lock out facility is availble on the power supply.

Each product must have its own separate earth leakage breaker.
Otherwise there can be a risk of electric shock or fire.

Ensure that no harmonics are superimposed at power supply.
(Do not use inverter, etc.)

Supply a steady power supply which is not affected by surges or
distortion. In particular, if the voltage rate of increase (dv/dt) at
zero crossing exceeds 40V/200μsec, it may cause malfunction.
V
dV
dt
dt
= Voltage ratio
on zero-cross point
dV
t
Voltage rise %
Time
Voltage