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187
Appendix A
Specifications
General Specifications
Item
Specification
Rated power supply voltage
24 VDC
Allowable power supply voltage range
20.4 VDC to 27.6 VDC (24 VDC –15% to +15%)
Allowable power interruption time
No regulation
Power consumption
7 W max.
Ambient temperature
Operating: 0 to +50
_
C
Storage: –20 to +70
_
C
Operating ambient humidity
35% to 85% humidity at 0 to 40
_
C (with no condensation)
35% to 55% humidity at 40 to 50
_
C (with no condensation)
Operating environment
No corrosive gases
Noise resistance
Conforms to IEC 61000-4-4.
2,000 V (power supply line)
Vibration resistance (operating)
10 to 57 Hz with 0.075 mm amplitude and 57 to 150 Hz with 9.8 m/s
2
acceleration for 60 minutes in each of X, Y, Z directions
Shock resistance (operating)
147 m/s
2
, 3 times in each of X, Y, and Z directions
Dimensions
190 (W)
110 (H)
53.5 (D) mm
(With Expansion Unit mounted: 190 (W)
110 (H)
73.5 (D) mm)
Panel cutout dimensions
178.5
×
100.5 mm
+0.5
0
+0.5
0
Panel thickness range: 1.6 to 4.8 mm
Weight
0.6 kg max.
Enclosure ratings
Front panel:
Equivalent to IP65F (NEMA4)*
Grounding
D-type grounding (Ground to 100
Ω
or less)
International standards
UL, cULus, EC directives, C-Tick Class 1 Division 2
* The NT21 may not be used at a location where it is exposed to splashing oil for a long period.