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■ Safety Precautions
Note
1. A SELV circuit is one separated from the power supply with double insulation
or reinforced insulation, that does not exceed 30 V r.m.s. and 42.4 V peak or
60 VDC.
2. A class 2 power supply is one tested and certified by UL as having the current
and voltage of the secondary output restricted to specific levels.
CAUTION
If the output relays are used past their life expectancy, contact
fusing or burning may occasionally occur. Always consider the
application conditions and use the output relays within their rated
load and electrical life expectancy. The life expectancy of output
relays varies considerably with the output load and switching
conditions.
CAUTION - Risk of Fire and Electric Shock
a) This product is UL listed as Open Type Process Control
Equipment. It must be mounted in an enclosure that does not
allow fire to escape externally.
b) More than one disconnect switch may be required to de-
energize the equipment before servicing the product.
c) Signal inputs are SELV, limited energy. (See note 1.)
d) Caution: To reduce the risk of fire or electric shock, do not
interconnect the outputs of different Class 2 circuits. (See note
2.)
Do not touch the terminals while power is being supplied. Doing
so may occasionally result in minor injury due to electric shock.
Be sure to turn OFF the power supply before mounting the option
unit. Not doing so may occasionally result in minor or moderate
injury due to electric shock.
Do not allow pieces of metal, wire clippings, or fine metallic
shavings or filings from installation to enter the product. Doing so
may occasionally result in electric shock, fire, or malfunction.
Do not use the product where subject to flammable or explosive
gas. Otherwise, minor injury from explosion may occasionally
occur.
Never disassemble, modify, or repair the product or touch any of
the internal parts. Minor electric shock, fire, or malfunction may
occasionally occur.
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