Power Supply Module A06B-6077-H111 AO6B-6O77-H111 A06B6077H111

FANUC A06B-6077-H111 | Alpha PSM-11 Power Supply Module — 13.2 kW / 90mm / 283–325V / CNC and Robot

Check the Heatsink Variant Before Ordering

The A06B-6077-H111 exists in two physically distinct heatsink configurations. The heatsink mounting geometry at the base of the module differs between variants — not interchangeable without cabinet modification, which is not an appropriate fix in the field. Standard product listings often omit this detail, but it is practically significant: ordering the wrong variant means the replacement will not fit the machine's mounting arrangement.

Before ordering, photograph the rear and bottom of the original PSM-11 showing the heatsink mounting geometry. Provide these photographs to the supplier and confirm which variant they are shipping. This takes a day. The alternative — discovering the mismatch after the original module has been removed and the machine is open — costs far more in downtime.

PSM-11 in the Alpha PSM Family

The PSM-11 occupies the middle of the A06B-6077 series. At 90mm width it is wider than the PSM-5.5 (60mm) and the same width as the PSM-15. The single internal 150A transistor operates well below its peak electrical capability at the 49A rated input current — this thermal headroom contributes to the module's generally good service life under normal operating conditions.

Two hardware revisions exist. Revision A uses wiring board A16B-2202-0461; Revision B uses A16B-2202-0661. Both use the same control PCB (A16B-2202-0420) and are functionally identical in the machine — the revision difference is relevant only for board-level repair, not for system-level replacement. A Revision B module works correctly in place of a Revision A without any adjustments.

Key Specifications

FAQ

Q1: Two heatsink variants exist — how is the correct one identified?

Photograph the rear and bottom of the original PSM-11 while it is still in the machine, clearly showing the heatsink mounting geometry. Send these photographs to the supplier and ask them to confirm which variant they are supplying. If the module has already been removed and photographs are unavailable, a PSM-11 specialist with stock of both variants can help identify the correct one based on cabinet arrangement details.

Q2: Can a Revision B PSM-11 replace a Revision A without any adjustments?

Yes. Both revisions produce identical output and operate identically in the machine. No parameter changes or wiring modifications are needed. The revision difference is only relevant when performing board-level repair and sourcing the correct replacement wiring board.

Q3: My machine has one SVM1-40 and one small SPM. Is the PSM-11 correctly sized?

The SVM1-40 corresponds to approximately 5.5–7 kW of servo motor output; adding the SPM's spindle output brings combined load above the PSM-5.5's capacity in most configurations. The PSM-11 at 13.2 kW covers this combination with headroom. The PSM-5.5 would be undersized and produce AL-04 voltage drop alarms under simultaneous loading.

Q4: This module is going into a FANUC robot, not a CNC machine. Any configuration differences?

No. The PSM-11 is identical in hardware, alarm behaviour, and DC bus output regardless of whether it powers a CNC servo system or a robot joint drive system. There are no internal settings that differ between CNC and robot applications.

Q5: A supplier offers a PSM-11 described as "tested, no alarm." Is this adequate for a production machine?

"Tested, no alarm" at static bench power-up confirms the module powers up and the bus voltage appears at no load. It does not verify transistor performance under actual load current, fan adequacy at operating temperature, or pre-charge behaviour across the module's operating temperature range. For a production machine, source from a supplier who tests under load on an actual Alpha drive system with motor loads connected, and offers a 12-month warranty from installation date rather than from shipment date.