AX521 | Analog Input/Output Module ABB

Ordering Data

• Part Number: 1SAP 250 100 R0001
  Description: AX521, analog input/output module, 4 AI, 4 AO, U/I/Pt100, 12 bits + sign, 2-wires
  Product Life Cycle Phase: Active

• Part Number: 1SAP 450 100 R0001
  Description: AX521-XC, analog input/output module, 4 AI, 4 AO, U/I/Pt100, 12 bits + sign, 2-wires, XC version
  Product Life Cycle Phase: Active

Technical Data

• Process Voltage:

  • Connections: Terminals 1.8, 2.8, 3.8, 4.8 for +24 V (UP) and Terminals 1.9, 2.9, 3.9, 4.9 for 0 V (ZP)
  • Rated Value: 24 V DC
  • Max. Ripple: 5%
  • Protection Against Reversed Voltage: Yes
  • Rated Protection Fuse on UP: 10 A fast

• Galvanic Isolation: Yes, per module

• Current Consumption:

  • From 24 V DC Power Supply: Approximately 2 mA
  • At Normal Operation: 0.15 A + output loads
  • Inrush Current from UP (at Power Up): 0.020 A²s

• Cable Specifications:

  • Maximum Length of Analog Cables: 100 m
  • Conductor Cross Section: Greater than 0.14 mm²

• Weight: 300 g

• Mounting Position:

  • Horizontal or vertical (derating required; output load reduced to 50% at +40 °C per group)

• Cooling:

  • Natural convection cooling must not be hindered by cable ducts or other cabinet parts

Technical Data of the Analog Inputs

• Number of Channels per Module: 4

• Channel Distribution: 1 group of 4 channels

• Connections:

  • I0- to I3-: Terminals 1.0 to 1.3
  • I0+ to I3+: Terminals 2.0 to 2.3

• Input Type: Bipolar (not with current or Pt100/Pt1000/Ni1000)

• Galvanic Isolation: Against internal supply and other modules

• Configurability:

  • 0 V...10 V
  • -10 V...+10 V
  • 0 mA...20 mA
  • 4 mA...20 mA
  • Pt100/1000, Ni1000 (individually configurable for each input)

• Channel Input Resistance:

  • Voltage: >100 kΩ
  • Current: Approximately 330 Ω

• Input Filter Time Constant:

  • Voltage: 100 µs
  • Current: 100 µs

• Input Signal Indication: One LED per channel

• Conversion Cycle:

  • 2 ms for 8 inputs + 8 outputs
  • 1 s for Pt/Ni inputs

• Resolution:

  • 12 bits for all ranges (+ sign for bipolar)

• Conversion Error:

  • Typical (at +25 °C): ±0.5% of full scale
  • Maximum (at 0 °C...+60 °C): ±1% of full scale

• Unused Inputs:

  • Voltage Inputs: Configured as "unused"
  • Current Inputs: Low resistance, can be left open-circuited

• Overvoltage Protection: Yes

Technical Data of the Analog Outputs

• Number of Channels per Module: 4 (for both voltage and current)

• Channel Distribution: 1 group of 4 channels

• Connections:

  • O0-...O3-: Terminals 3.0 to 3.3
  • O0+...O3+: Terminals 4.0 to 4.3

• Output Type: Bipolar for voltage, unipolar for current

• Galvanic Isolation: Against internal supply and other modules

• Configurability:

  • -10 V...+10 V
  • 0 mA...20 mA
  • 4 mA...20 mA (individually configurable for each output)

• Output Resistance (Load):

  • As Current Output: 0 Ω...500 Ω

• Output Loadability:

  • As Voltage Output: Max ±10 mA

• Output Signal Indication: One LED per channel

• Resolution: 12 bits (+ sign for bipolar)

• Conversion Error:

  • Typical (at +25 °C): ±0.5% of full scale
  • Maximum (at 0 °C...+60 °C): ±1% of full scale

• Unused Outputs: Can be left open-circuited