Configured for centralized processing, gate driver control, and integrated Safe Torque Off execution in variable frequency drives, the ABB 3AXD50000717002 (CCU-24 Control Unit) provides direct physical/electrical execution within ACS580 drive platforms.

Variant Mapping & Designation Scheme

• Manufacturing Part Number: 3AXD50000717002
• Base Control Unit Platform: CCU-24
• Spare Part Ordering Code: ACS580-CCU-24-S+N2000-ASCK4
• Application Architecture: Main processing assembly for ACS580 drive frames
• Safety Feature Integration: Native Safe Torque Off (STO) hardware loop support

Operational Specifications

High-Speed Backplane & Deterministic Control Integration

The board utilizes firmware flash compatibility to synchronize local gate drive PWM generation with internal control routines. High-speed backplane bus communication velocity licences ensure rapid cyclic data transfers to optional fieldbus interface modules, maintaining deterministic processing during dynamic load shifts and speed regulation loops across Profinet / EtherNet/IP networks.

Fulfillment Package Content

• 1 x ABB 3AXD50000717002 CCU-24 control unit assembly
• 1 x Grounding bar and terminal mounting kit
• 1 x Quick reference installation guide

Cabinet Assembly & Electrical Mounting Directives

• ESD Protection Practices: Handle the card strictly by its non-conductive edges while wearing a grounded anti-static wrist strap during maintenance.
• Control Cable Routing: Keep low-voltage I/O and communication cables physically segregated from motor output leads and high-voltage AC mains wiring.
• Grounding Connection: Ensure the metal mounting screws are fully torqued to establish a low-impedance ground path to the drive frame chassis.
• Power-Down Procedure: Verify complete isolation of main line voltage and allow internal DC capacitors to discharge prior to board extraction.

Engineering & Maintenance FAQ

• How is dynamic runtime memory utilized on the CCU-24 processing board?

  The board contains >= 128 MB RAM allocated for real-time control algorithms, fault trace logging, and volatile communication buffers.

• Can the CCU-24 control unit be replaced without powering down the drive?

  Hot-swapping is not permitted; all auxiliary 24 VDC control power and main power sources must be disconnected before replacement.

• What functional safety loops are directly managed on this assembly?

  The hardware includes dual-channel Safe Torque Off (STO) terminals to disable the power semiconductors without removing main AC line power.

• What are the thermal operating limits for this control card inside the enclosure?

  The unit operates reliably within an ambient temperature span from -20 to +55 deg C under non-condensing atmospheric conditions.

• How are option cards powered when connected to the control board?

  Option cards receive stabilized DC supply voltages directly through the dedicated option slots integrated on the CCU-24 mainboard.

• What happens if the grounding screws are improperly tightened during installation?

  Insufficient grounding connection torque degrades high-frequency noise immunity, leading to potential communication drops or sensor jitter.

• What memory component stores permanent drive firmware on the card?

  Non-volatile flash memory on board stores firmware, system parameters, and fault logs independently of external power status.

• What type of cables must be attached to the I/O terminals of the control unit?

  Twisted-shielded pair cables with low-impedance terminal grounding must be used for all analog and digital control wiring.