You probably do not come from: Malaysia. If necessary, change to: United States
  1. Products
  2. Industrial communication
  3. AS-Interface power supplies and monitors
  4. AS-Interface power supplies
  5. AC1257

AS-Interface power supply

AC1257

PSU-24VDC/ASi-4A

AS-Interface power supply

AC1257

PSU-24VDC/ASi-4A

  • 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
  • ukca
  • asi
  • cul
  • cruus
Electrical data
Operating voltage tolerance [%] 25...35
Nominal voltage DC [V] 24
Input voltage DC [V] 24
Protection class III
Overvoltage protection yes; (< 36 V)
Max. power-on delay time [ms] 650
Output voltage AS-i [V] 30.5
Output power (permanent) [W] 122
Output power (peak) [W] 134
Note on output power (peak) [W]
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
Integrated data decoupling yes
Back feeding protection [V] 35
Outputs
Short-circuit proof yes
Overload protection yes
Overload performance output current constant
Parallel connection of outputs possible no
Series connection of outputs possible no
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
Pollution degree 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