6 - PL500-PL600-PL700 - User manual
1.1 Organization of safety notices
Safety notices in this manual are organized as follows:
Safety notice Description
Danger!
Disregarding these safety guidelines and notices can be
life-threatening.
Warning!
Disregarding these safety guidelines and notices can result in
severe injury or substantial damage to property.
Information! This information is important for preventing errors.
1.2 Safety Precautions
Danger!
CAUTION - Risk of Fire and Electric Shock
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.
Danger!
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.
Warning!
Devices shall be supplied with limited energy according to UL
61010-1 3rd Ed, section 9.4 or LPS in conformance with UL 60950-1
or SELV in conformance with UL 60950-1 or Class 2 in compliance
with UL 1310 or UL 1585.
Warning!
Loose screws may occasionally result in fire.
For screw terminals, tighten screws to tightening torque of 0.5 Nm
Warning!
A malfunction in the Digital Controller may occasionally make
control operations impossible or prevent alarm outputs, resulting
in property damage. To maintain safety in the event of malfunction
of the Digital Controller, take appropriate safety measures, such as
installing a monitoring device on a separate line.
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