Omron NSH5 Operation Manual page 28

Overview
Standards Applicable to
the NSH5
Main Point
The standard covers all of the elements required in electrical devices, such as
control circuits, functions, and devices for electrical and electronic equipment,
safety measures, and technical materials related for installation, operation,
and maintenance.
Standard Related to Safety Switches
EN 60947-5-1
Low-voltage Switching Gear and Control Gear
Part 5: Control Circuit Devices and Switching Elements
Section 1: Electromechanical Control Circuit Devices
IEC Standards: IEC 60947-5-1; JIS Standards: JIS C 8201-5-1
Summary
This standard applies to switching elements and control circuit devices cre-
ated for purposes such as control of switching control equipment, signals, and
interlock.
Main Points
Section 1: General Requirements
Section 2: Special Requirements for Indicator Lights
Section 3: Special Requirements for Direct Opening Operations
The standards cover topics such as switching capacity, temperature rise, ter-
minal strength, protective construction, and direct opening operations.
Standard Regarding Emergency Stop Equipment
EN 418
Emergency Stop Equipment
Functional Aspects: Principles for Design
ISO Standards: ISO 13850; JIS Standards: JIS B 9703
Summary
This standard prescribes the design principles for emergency stop equipment.
Main Points
A direct opening mechanism must be provided.
A self-holding mechanism must be provided.
The stopping device must be in a form that is easy to operate, such as a pro-
truding pushbutton, a wire, or a rope.
The stopping device must be red with a yellow background.
The following safety standards apply to the NSH5 PT.
• Based on EN 60204-1
• Complies with EN 954-1
EN 60204-1 Safety Standard
IEC204-1 (EN60204-1: Electrical Safety Standard for Machinery) stipulates
that an emergency stop switch must be red, and a stop switch must be gray or
black. When detaching and using the PT separate from the system, always
use a PT with a gray switch.
In the EN60204-1safety standard, emergency stop and emergency shutdown
are defined as emergency switches.
Emergency stop
Emergency shutdown
Stop category 0 or 1
Stop category 0 only
Section 1-1
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