FANUCA06B-6087-H115Alpha Power Supply Module PSM-15, 3-Phase 200-230 V AC 63 A In, 283-325 V DC 17.5 kW Out

Product Description

What this part is

Fanuc A06B-6087-H115 is the Alpha series Power Supply Module model PSM-15. In a Fanuc Alpha drive rack this is the front-end converter, not a servo amplifier. It rectifies incoming three-phase mains into the common DC bus and supplies the 24 V DC control voltage that the servo amplifier modules (SVM) and spindle amplifier modules (SPM) beside it draw from. The amplifiers turn that DC into motor current; the PSM does not drive a motor itself. Fanuc built these in Japan; units are also labelled as GE Fanuc, which reflects the sales channel rather than a different manufacturer.

Order code breakdown

A06B: Fanuc servo and spindle products, covering drives, amplifiers and power supplies. 6087: the Alpha PSM power supply module family. H115: the size within that family, PSM-15, 17.5 kW class. Suffixed forms record build or service history rather than a different rating: -R and #R denote a unit refurbished by Fanuc, and #RS, #A, #CE and #EM appear on regional and CE builds. All are the same PSM-15.

Published specifications

Model: Alpha PSM-15. Rated input: 200–230 V AC, three phase, 50/60 Hz. Rated input current: 63 A at 200 V. Rated output: 283–325 V DC bus. Rated output power: 17.5 kW. Control power: 24 V DC to the connected amplifier modules. Front panel: 7-segment status and alarm display. Fanuc manual reference: B-65162. Internal boards used in this model: A20B-1006-0470 wiring board and A16B-2202-042x control board. Approximate weight: 19 lb.

Specifications in application

At 17.5 kW the PSM-15 is the mid-range Alpha power supply and one of the most widely fitted, appearing on thousands of machine tools driving a combination of smaller Alpha servo axes plus a modest spindle. The PSM rating covers the sum of what all amplifiers on the bus draw simultaneously rather than the largest single amplifier. An undersized PSM passes a static test and then trips during heavy simultaneous acceleration or a hard spindle ramp.

The 63 A figure is input current at 200 V, which sets upstream protection and cabling. The input is three phase, with no single-phase option, and a 400 V supply calls for either a different module or a transformer.

The Alpha PSM is a regenerative front end: on deceleration the amplifiers push energy back into the DC bus and the PSM returns it to the mains rather than dissipating it as heat. An Alpha system therefore normally has no braking resistor, and regeneration depends on a healthy three-phase mains. A weak or distorted supply shows up as PSM alarms.

The 7-segment display on the front carries the alarm code, read against the Alpha power module alarm list. A large share of apparent PSM failures are DC bus, amplifier or supply-side faults that the PSM is reporting.

What is included

Power supply module only, as pictured. This listing does not include servo amplifier modules (SVM) or spindle amplifier modules (SPM); DC bus link bars or bus connection kits; input contactor, line filter, AC reactor or fuses; the connector kit or any control and interface cables; a battery; a braking resistor (an Alpha PSM is regenerative and does not normally use one); the internal wiring board or control board as spares; a rack, cabinet or mounting hardware; or documentation.

Mounting data

The module is enclosure-mounted, with the ventilation clearances specified by Fanuc. Approximate weight is 19 lb. Supply voltage is 200–230 V three phase. The PSM and amplifier configuration in the CNC parameters corresponds to the hardware fitted. The 6087 family shares one physical style across several ratings.

Interchange guidance

A06B-6087-H115 and its -R, #R, #RS, #CE and #EM forms are the same PSM-15. Other H-numbers in the 6087 family are different power ratings and are not interchangeable. A06B-6087-H130 is the PSM-30 at 35 kW and 127 A, roughly double this module’s capacity, and a PSM-15 in a machine built with a PSM-30 nuisance-trips under load, so these are related sizes rather than equivalents. Also searched as A06B6087H115, A06B 6087 H115, A06B-6087-H115R, PSM-15, PSM15, Fanuc Alpha PSM 17.5kW, and GE Fanuc A06B-6087-H115. Sold as 1 piece.