170BNO67100 SQUARE D, 170BNO67100 Datasheet - Page 97

• Manufacturer Part Number: 170BNO67100
• Description: Programmable Logic Controller
• Manufacturer: SQUARE D

Specifications of 170BNO67100

• Peak Reflow Compatible (260 C): No
• Leaded Process Compatible: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Presentation
(continued)
Advantys
Solution
Phaseo
b Using c 24 V enables so-called protection installations (PELV) to be built. Using
PELV is a measure designed to protect people from direct and indirect contact.
Measures relating to these installations are defined in publication NF C 12-201 and
in standard IEC 364-4-41.
b The application of these measures to the electrical equipment in machines is
defined in standard NF EN 60204-1 and requires:
v that the voltage used is below 60 V DC in dry environments and below 30 V in
damp environments,
v the connection of one side of the PELV circuit, or one point of the source, to the
equipotential protection circuit associated with higher voltages,
v the use of switchgear and control gear on which measures have been taken to
ensure “safety separation” between power circuits and control circuits.
b A safety separation is necessary between power circuits and control circuits in
PELV circuits. Its aim is to warn of the appearance of dangerous voltages in c 24 V
safety circuits.
b The reference standards involved are:
v IEC 61558-2-6 and EN 61558-2-6 (safety transformers),
v IEC 664 (coordination of isolation).
Telemecanique
b Moreover, to ensure that these products will operate correctly in relation to the
demands of their reinforced isolation, it is recommended that they be mounted and
wired as indicated below:
v they should be placed on a grounded mounting plate or rail,
v they should be connected using flexible cables, with a maximum of two wires per
connection, and tightened to the nominal torque,
v conductors of the correct insulation class must be used.
b If the DC circuit is not connected to an equipotential protection conductor, an earth
leakage detector will indicate any accidental insulation faults (please consult your
Regional Sales Office).
b The permissible tolerances for the operating voltage are listed in publications
IEC 1131-2 and DIN 19240.
b For nominal voltage Un = c 24 V, the extreme operating values are from - 15% to
+ 20% of Un, whatever the supply fluctuations in the range - 10% to + 6% (defined
by standard IEC 38) and load variations in the range 0-100% of In.
All Telemecanique
this range.
b It may be necessary to use a voltage measurement relay to detect when the
normal voltage limits are being exceeded and to deal with the consequences of this
(please consult your Regional Sales Office).
Using c 24 V
Operating voltage
®
®
Regulated Power Supplies
power supplies meet these requirements.
®
c 24 V power supplies are designed to provide a voltage within
™
STB Distributed I/O
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