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AS-Interface power supply

PSU-24VDC/ASi-4A

AC1257

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Dear customer,
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Best regards
Your ifm team

  • Reliably power supply for modules, sensors and actuators
  • High noise immunity and sufficient power reserves for the compensation of current peaks
  • Safe decoupling of interferences from the primary supply
  • Particularly space-saving design
  • Low heating of the control cabinet due to high efficiency
  • ce
  • asi
  • cul
Comprehensive technical data in pdf format

Technische Details
Electrical data
Operating voltage tolerance [%] 25...35
Nominal voltage DC [V] 24
Input voltage DC [V] 24
Protection class III
Overvoltage protection yes; (< 36)
Max. power-on delay time [ms] 650
Power-on delay time [s] < 650
Output voltage AS-i [V] 30.5
Output power (permanent) [W] 122
Output power (peak) [W] 134
Note on output power (peak)
briefly to load bus capacities after power on
Power reserve [%] 10
Number of output circuits 1
Output current AS-i [A] 4
Max. residual ripple [mV] 50
Switch-on peak current (nominal voltage 24 V DC) [A] 2
Inrush current limitation yes
Efficiency (nominal voltage 24 V DC) [%] 90.5
External input protection ≤ B-10 A / ≤ C-8 A
Derating [W/K] 3 (60...70 °C)
Mains buffering time (nominal voltage 24 V DC) [ms] 6
Input current (nominal voltage 24 V DC) [A] 5.5
Power loss (nominal voltage 24 V DC) [W] 12.7
Back feeding protection [V] 35
Outputs
Short-circuit proof yes
Overload protection yes
Overload performance output current constant
Operating conditions
Ambient temperature [°C] -25...70
Note on ambient temperature
observe the free space for convection (see operating instructions)
Storage temperature [°C] -40...85
Max. relative air humidity [%] 95; (IEC 60068-2-30)
Protection IP 20
Degree of soiling 2; (IEC 62103: conductive soiling not permitted)
Tests / approvals
EMC
EN 61000-6-1
EN 61000-6-2
EN 61000-6-3
EN 61000-6-4
Vibration resistance
IEC 60068-2-6 ± 1,6 mm 2...17,8 Hz / 2 g 17,8...500 Hz
Shock resistance
IEC 60068-2-27 30 g 6 ms / 20 g 11 ms
AS-i classification
AS-i certificate 98801
Mechanical data
Weight [g] 621
Type of mounting rail; (TH35 (EN 60715))
Dimensions [mm] 124 x 40 x 120
Materials steel sheet
Displays / operating elements
Display
AS-i voltage LED, green
Remarks
Pack quantity 1 pcs.
Electrical connection
Connection screw terminals:
Diagrams and graphs
block diagram
output characteristics
characteristic curve for degree of efficiency / power loss
characteristic line for derating
characteristic line for mains buffering time
ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — We reserve the right to make technical alterations without prior notice. — EN-GB — AC1257-00 — 10.01.2014 —