2 Specifications
2 - 2
NX-series Safety Control Unit User’s Manual (Z930)
2-1 General Specifications
The general specifications of the NX-series Safety CPU Unit and Safety I/O Units are given in the fol-
lowing table.
Item Specification
Enclosure Mounted in a panel (open)
Grounding method Ground to 100 Ω or less.
Operating
environ-
ment
Ambient operating
temperature
0 to 55°C (The upper limit of the ambient operating temperature is
restricted by the installation orientation.)
Ambient operating
humidity
10% to 95% (with no condensation or icing)
Atmosphere Must be free from corrosive gases.
Ambient storage tem-
perature
−25 to 70°C (with no condensation or icing)
Altitude 2,000 m max.
Pollution degree 2 or less: Conforms to JIS B 3502 and IEC 61131-2.
Noise immunity Conforms to IEC 61131-2.
2 kV on power supply line (Conforms to IEC 61000-4-4.)
Insulation class Class III (SELV)
Overvoltage category Category II: Conforms to JIS B 3502 and IEC 61131-2.
EMC immunity level Zone B
Vibration resistance Conforms to IEC 60068-2-6.
5 to 8.4 Hz with 3.5-mm amplitude, 8.4 to 150 Hz, acceleration of 9.8 m/s
2
,
100 minutes each in X, Y, and Z directions (10 sweeps of 10 min each =
100 min total)
Shock resistance Conforms to IEC 60068-2-27.
147 m/s
2
, 3 times each in X, Y, and Z directions
Insulation resistance 20 MΩ between isolated circuits (at 100 VDC)
Dielectric strength 510 VAC for 1 min between isolated circuits, leakage current: 5 mA max.
Installation method DIN Track (IEC 60715 TH35-7.5/TH35-15)
Applicable standards
*1
*1. Refer to the OMRON website (http://ia.omron.com/) or consult your OMRON representative for the most re-
cent applicable standards.
IEC 61508: 2010 SIL 3, EN 62061: 2005 SIL CL3
EN ISO 13849-1, 13849-2: 2008 PL e/Safety Category 4
UL 1998
cULus: Listed UL508, ANSI/ISA 12.12.01
EN 61131-2, C-Tick, KC: KC Registration, NK, LR
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