ABB AX722F / DC732F / PM783F / CM772F / CP-E 24/1.25 | AC 900F / Freelance DCS Module Set
ABB AX722F / DC732F / PM783F / CM772F / CP-E 24/1.25 | AC 900F / Freelance DCS Module Set - Image 2
ABB AX722F / DC732F / PM783F / CM772F / CP-E 24/1.25 | AC 900F / Freelance DCS Module Set - Image 3

ABB AX722F / DC732F / PM783F / CM772F / CP-E 24/1.25 | AC 900F / Freelance DCS Module Set

  • Models: AX722F, DC732F, PM783F, CM772F, CP-E 24/1.25
  • Brand: ABB
  • Series: ABB AC 900F / Freelance DCS and CP-E power supply family
  • Core Function: Controller CPU, fieldbus communication, analog/digital I/O, and 24 VDC panel power supply for process and industrial automation systems.
  • Type: DCS/PLC controller module set + DIN-rail power supply
  • Key Specs: PM783F CPU with Ethernet/serial; CM772F PROFIBUS-DP master; AX722F analog I/O; DC732F digital I/O; CP-E 24/1.25 24 VDC 1.25 A supply.
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Description

Key Technical Specifications

Module Primary Role Key Verified Specifications
PM783F CPU controller Central processing unit for AC 900F / Freelance systems; Ethernet + serial interfaces; 24 VDC supply; supports local/remote I/O and fieldbus expansion.
CM772F PROFIBUS-DP communication PROFIBUS-DP master interface for AC 700F / AC 900F controllers; 9-pin D-SUB; powered via coupler bus; not supported with PM 904F.
AX722F Analog I/O module 8 AI + 8 AO; AI: ±10 V, 0/4–20 mA, Pt100; AO: ±10 V, 0/4–20 mA, 12-bit + sign; 24 VDC; order number 3BDH000377R0001.
DC732F Digital I/O module Digital input/output module for ABB AC 900F / Freelance I/O racks; exact channel count and voltage class must be confirmed from label/BOM.
CP-E 24/1.25 24 VDC power supply 24 VDC, 1.25 A, 30 W; 100–240 VAC input; adjustable 24–28 VDC; DIN-rail mount; operating temp −10 to +70 °C; order number 1SVR427031R0000.

 

Product Introduction

This is a typical ABB AC 900F / Freelance DCS module set plus a panel power supply. The PM783F acts as the controller CPU, handling control logic, communication, and I/O coordination. The CM772F provides PROFIBUS-DP master connectivity for remote I/O, drives, or third-party devices, and is compatible with PM 901F/PM 902F but not PM 904F.

The AX722F handles mixed analog signals — up to 8 analog inputs and 8 analog outputs — making it suitable for pressure, temperature, flow, and valve-position loops. The DC732F provides digital I/O capacity for status signals, interlocks, permissives, and equipment start/stop commands. The CP-E 24/1.25 is not a controller module; it is a 30 W DIN-rail power supply that converts 100–240 VAC to 24 VDC 1.25 A for I/O racks, relays, instruments, or small control circuits.

QA/QC Transparency SOP

  1. Intake & Label Verification — Photograph each module’s full rating label, order number, revision, and serial number. Reject items with missing or altered labels.
  2. Visual Inspection — Check connectors, backplane pins, terminal blocks, LEDs, capacitors, and mounting clips for corrosion, mechanical stress, or heat damage.
  3. Electrical Testing — For CP-E 24/1.25, verify 24 VDC output under load and check ripple. For I/O modules, check supply rails, channel continuity, and insulation resistance.
  4. System Compatibility Check — Confirm PM783F firmware, CM772F PROFIBUS configuration, AX722F/DC732F slot assignment, and backplane compatibility.
  5. Final QC & Packaging — Tag each module with test results, revision, and source condition. Pack with ESD protection and connector covers.

 

Field Engineer Gotchas

  • CM772F is not universal across all PM CPUs. It works with PM 901F/PM 902F but is not supported with PM 904F. Verify the installed CPU before substitution.
  • AX722F is analog, DC732F is digital. Do not swap them based on similar form factor. Channel type, wiring, and configuration are completely different.
  • CP-E 24/1.25 is only 30 W. It can support small I/O loads, but not large valve manifolds, solenoid banks, or multiple remote racks without load calculation.
  • PM783F firmware matters. A replacement CPU may need the correct firmware version and project download to restore operation.
  • PROFIBUS addressing must match. Replacing CM772F without restoring the correct GSD, baud rate, and slave addresses will cause bus faults.
ABB AX722F DC732F PM783F CM772F CP-E 24 1.25

ABB AX722F DC732F PM783F CM772F CP-E 24 1.25

Application Scenarios

  • AC 900F / Freelance controller replacement. Restore a failed PM783F CPU with verified firmware and project backup.
  • PROFIBUS-DP network expansion. Use CM772F to connect remote I/O, VFDs, or analyzer systems.
  • Analog loop maintenance. AX722F supports 4–20 mA and Pt100 signals for process measurement and control.
  • Panel power upgrade or spare provisioning. CP-E 24/1.25 provides stable 24 VDC for instrumentation and small control circuits.

 

FAQ

1. Are these modules from the same ABB system?
Yes. , , AX722F, and DC732F belong to the ABB AC 900F / Freelance DCS family. CP-E 24/1.25 is a separate DIN-rail power supply.

No. is supported with PM 901F and PM 902F, but not with PM 904F.

It supports analog inputs such as ±10 V, 0/4–20 mA, and Pt100, plus analog outputs ±10 V and 0/4–20 mA.

4. Is CP-E 24/1.25 enough for a full DCS rack?
Usually not alone. At 30 W, it suits small I/O or instrument supplies. Larger racks need higher-capacity or redundant supplies.

5. Can I mix revisions freely?
No. ABB modules may differ by revision, firmware, or backplane compatibility. Always match the full order number.

6. Is this set still supported?
These are mature ABB products. Confirm current lifecycle status with ABB or an authorized distributor before specifying them for new projects.

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