ABB Analog and digital I/O Module DX561 DX571 AI523 AX521 AX522

ABB Analog and digital I/O Module

ABB produces a wide range of I/O modules for its AC500 series of Programmable Logic Controllers (PLCs). Which is designed to expand the control capabilities of the PLC system by connecting to various field devices. Most of ABB Analog and digital I/O Module DX561 DX571 AI523 AX521 AX522.

ABB DX561 Digital Input/Output Module:

• Function: Provides both digital inputs and digital outputs within a single module.
• I/O Count: Typically has 8 Digital Inputs (DI) and 8 Digital Outputs (DO).
• Input Type: 24 V DC sink/source (configurable).
• Output Type: 24 V DC transistor outputs, usually with a maximum current of 0.5 A per channel.

ABB DX571 Digital Input/Output Module

Digital Inputs 8(DI):

• Voltage: 24 V DC (sink/source configurable).
• Input Current: Typically 5 mA.
• Delay Time: Approximately 8 ms.
• Indication: 1 yellow LED per channel indicates signal status.

Digital Outputs 8(DO):

• Output Type: Relay outputs. This is the key distinguishing feature.
• Output Voltage Range: 24 V AC/DC, 120 V AC, or 240 V AC
• Output Current: Rated at 2 A per channel (for resistive loads).
• Output Delay: Typical switching delay of 10 ms (0 to 1 and 1 to 0).

ABB AI523 Analog Input Module:

• Function: Converts analog signals from field devices into digital values that the PLC can process.
• I/O Count: Features 16 Analog Input (AI) channels.
• Input Signal Types: Highly configurable, supporting a wide range of industrial signals:
  • Voltage: 0 V to 10 V, -10 V to +10 V
  • Current: 0/4 mA to 20 mA
  • Resistance Temperature Detectors (RTD): Pt100, Pt1000, Ni1000 (suitable for temperature measurement).

ABB AX521 Analog Input/Output Module

• Function: Provides both analog input capabilities for reading sensors and analog output capabilities for controlling analog actuators.
• I/O Count: Typically has 4 Analog Inputs (AI) and 4 Analog Outputs (AO).
• Input Signal Types (AI):
  • Voltage: U (e.g., 0-10V, ±10V)
  • Current: I (e.g., 0/4-20mA)
  • Resistance Temperature Detectors (RTD): Pt100, Pt1000, Ni1000.
• Output Signal Types (AO): Configurable for:
  • Voltage: U (e.g., 0-10V, ±10V)
  • Current: I (e.g., 0/4-20mA)

ABB AX522 Analog Input/Output Module

• Function: Similar to the AX521 but with more channels.
• I/O Count: Features 8 Analog Inputs (AI) and 8 Analog Outputs (AO).
• Input Signal Types (AI):
  • Voltage: U (e.g., 0-10V, ±10V)
  • Current: I (e.g., 0/4-20mA)
  • Resistance Temperature Detectors (RTD): Pt100, Pt1000, Ni1000.
• Output Signal Types (AO):
  • 4 AO for Voltage (U)
  • 4 AO for Current (I)

Summery:

Designed for flexible system expansion from a few I/Os to thousands. Many modules are software-configurable, offering versatility in application. The Compatible with various AC500 CPU types (AC500 and AC500-eCo).