Safety Standards - Omron NSH5 Operation Manual

Overview
Note
1-1-8

Safety Standards

Overview of Standards
6
RUN
F6 F1
F7 F2
F8 F3
F9 F4
F10 F5
Special Cable (3 or 10 m)
• RS-232C: NSH5-232@@-@@M
• RS-422A: NSH5-422@@-@@M
(1) When used in a safety control system, the stop/emergency stop switch
and enabling switch must be connected to a safety circuit.
(2) Do not use the function switches or the touch switches on the touch panel
as emergency stop switches in situations involving potential risk to hu-
man life or serious damage.
(3) Use safety circuits that are capable of detecting shorts in the stop/emer-
gency stop switch and enable switch.
General Standards
EN 954-1
Safety-related Parts of Control Systems
Part 1: General Principles for Design
ISO Standards: ISO 13849-1; JIS Standards: JIS B 9705-1
Summary
This standard applies to design procedures for parts in control systems that
involve safety.
Main Point
The levels for machines are determined by taking into consideration the
degree of anticipated damage (from light to heavy) and the rate of occurrence
(from rare to frequent). The danger level is classified into five categories, and
for each category the safety functions that should be provided for control parts
are specified.
EN 60204-1
Electrical Equipment of Machines
Part 1: Specification for General Requirements
IEC Standards: IEC 60204-1; JIS Standards: JIS B 9960-1
Summary
This standard applies to electrical devices in which the power supply nominal
voltage between lines is less than 1,000 V (for AC) or 1,500 V (for DC), and
the nominal frequency is less than 200 Hz.
CS/CJ-series PLC
9-pin D-sub (male)
Function
switch outputs
Loose wires (21)
24-VDC power supply
Section 1-1
Safety circuits
Safety switch
outputs