ST Series User’s Manual
2-2
2.1 General Specifications
2.1.1 Electrical
2.1.2 Environmental
Rated Voltage DC24V
Rated Voltage Range DC19.2V to 28.8V
Allowable Voltage Drop 2ms or less
Power Consumption 7W or less
In-Rush Current 50A or less
*1
∗1 The FWHM (Full-width, half maximum) value is approximately 50µs. (When exceeding 25A)
Voltage Endurance
AC500V 20mA for 1 minute
(between charging and FG terminals)
Insulation Resistance
20MΩ or higher at DC500V
(between charging and FG terminals)
Ambient Operating Temperature
(Cabinet Interior) (Panel Face)
0°C to +50°C
*1
*1 The LCD displays of ST may occasionally blur when they are used for hours at over 40°C ambi-
ent operating temperature. This is a temporal phenomenon. After the temperature returns to nor-
mal, the normal display will be restored. The ST's operation will not be affected even though the
display is blurred.
Storage Temperature -20°C to +60°C
Operating Humidity
10%RH to 90%RH
(Non condensing, wet bulb temperature: 39°C or less)
Storage Humidity
10%RH to 90%RH
(Non condensing, wet bulb temperature: 39°C or less)
Air Purity (Dust) 0.1mg/m
3
or less (non-conductive levels)
Pollution Degree Pollution Degree 2
Corrosive Gasses Free of corrosive gasses
Atmosheric Endurance
(ST Operation Altitude)
800hPa to 1,114hPa (2,000 meters or lower)
Vibration Resistance
IEC61131-2 compliant
When vibration is NOT continuous
10Hz to 57Hz 0.075mm, 57Hz to 150Hz 9.8m/s
2
When vibration is continuous
10Hz to 57Hz 0.035mm, 57Hz to 150Hz 4.9m/s
2
X, Y, Z directions for 10 times (80min.)
Noise Immunity
(via noise simulator)
Noise Voltage: 1,000Vp-p
Pulse Duration: 1µs
Rise Time: 1ns
Electrostatic Discharge Immunity 6kV (complies with EN 61000-4-2 Level 3)
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