SMC Networks HRSH090 Series, Operation Manual

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HRX-OM-R026
Chapter 3 Transport and Setting Up
HRSH Series 3.3 Installation
3-11
3.3.2 Electrical wiring

Do not modify the intenal electrical wiring of the product. Incorrect
wiring may cause electrical shock or fire. Also, modifing the
internal wiring will void the product’s warranty.

Do not connect the ground to water line, gas pipe or lightening
conductor.

Only qualified persons are allowed to wire the product.
 Be sure to shut off the user’s power supply. Wiring with the
product energized is strictly prohibitted.
 The wiring must be conducted using cables complying with “Table
3-4
” firmly and 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, 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 3-4”.

Use a power supply suitable for the specifications of the product.
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
Voltag
e