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Isysnet 24VDC Expansion Power Supply, Series A (PSSSE24A) 

E105P

5

Specifications

Following are specifications for the PSSSE24A Power Supply.

24VDC Expansion Power Supply - PSSSE24A

I/O Module Capacity 

5 to 17 I/O modules depending on each module's current rating

Power Supply 

In order to comply with CE Low Voltage Directives (LVD), you must use a Safety Extra Low  

 

Voltage (SELV) or a Protected Extra Low Voltage (PELV) power supply to power the 

adapter.

Inputs Voltage Rating 

12VDC, 24VDC nominal 

 

10-28.8VDC range

Operating Voltage 

10-28.8VDC

Input Current, Maximum 

6A for 10ms

Backplane Output Current 

5VDC, 1.3A

Field Side Power Requirements, Maximum 

24VDC (+20% = 28.8VDC) @ 400 mA

Indicators 

1 Green Field Power Status Indicator 

 

1 Green 5V System Power Indicator

Module Location 

Between I/O modules in system 

 

Breaks field power bus

PointBus Output Current 

1A at 10-19.2V input; 1.3A at 19.2-28.8V input

Input Overvoltage Protection 

Reverse polarity protected

Interruption 

Output voltage will stay within specifications when input drops out for  

 

10ms at 10V with maximum load

General Specifications

Power Consumption, Maximum 

9.8W @ 28.8VDC

Power Dissipation, Maximum 

3.0W @ 28.8VDC

Thermal Dissipation, Maximum 

10.0 BTU/hr. @ 28.8VDC

Isolation Voltage 

50V rms 

(continuous-voltage withstand rating) 

Tested at 1250VAC rms for 60s

Field Power Bus 
  Supply Voltage 

12VDC, 24VDC nominal 

  Voltage Range 

10-28.8VDC range 

  Supply Current 

10A maximum

Dimensions 

Inches (Millimeters)  1.25H x 2.63W x 4.25D (31.75H x 66.80W x 107.95D)

Operating Temperature 

IEC 60068-2-1 (Test Ad, Operating Cold), 

 

IEC 60068-2-2 (Test Bd, Operating Dry Heat), 

 

IEC 60068-2-14 (Test Nb, Operating Thermal Shock): 

 

-20 to 60°C (-4 to 140°F)

Storage Temperature 

IEC 60068-2-1 (Test Ab, Un-packaged Non-operating Cold), 

 

IEC 60068-2-2 (Test Bb, Un-packaged Non-operating Dry Heat), 

 

-40 to 85°C (-40 to 185°F)

Relative Humidity 

IEC 60068-2-30 (Test Db, Un-packaged Non-operating Damp Heat): 

 

5-95% non-condensing

Shock 

IEC60068-2-27 (Test Ea, Unpackaged Shock): 

 

Operating 30g 

 

Non-operating 50g

Vibration 

IEC60068-2-6 (Test Fc, Operating): 

 

5g @ 10-500Hz

ESD Immunity 

IEC 61000-4-2: 

 

6kV contact discharges 

 

8kV air discharges

Radiated RF Immunity 

IEC 61000-4-3: 

 

10V/m with 1kHz sine-wave 80%AM from 30MHz to 2000MHz 

 

10V/m with 200Hz 50% Pulse 100%AM at 900Mhz 

 

10V/m with 200Hz 50% Pulse 100%AM at 1890Mhz

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