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ABB 3HAC8304-1 is a irb 4400 axes-4/6 cable unit for IRB 4400. It provides axes 4 through 6 manipulator wiring and must match the documented robot variant, connection option and harness revision.
This cable unit carries the documented axes four through six manipulator wiring on the matching robot family. Confirm the complete route and connector set before selection.
Compare cable length, clamps, bend radius and connector positions with the installed arm. A cable unit from another robot family is not assumed to fit.
Isolate the robot, mark every connection, route the replacement with the original clearance pattern and verify the affected axes before service handover.
Engineering check: Confirm 3HAC8304-1 is the correct IRB 4400 harness for axes 4 through 6. Match every motor, brake, resolver and service connector, then route and clamp the cable exactly through the documented manipulator path.
Acceptance test: Before energizing, test conductor continuity, insulation and shield bonding. Jog the affected axes through their permitted range at reduced speed while checking bend radius, twist, clearance and stable feedback without intermittent faults.