Komax ACS204-A Dual Axis Servo Drive: Complete Technical Guide and Industrial Applications
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What is the Komax ACS204-A?
The ACS204-A is a Komax dual-axis servo drive — two complete servo amplifier channels in one finned housing, type ACS204AK22, built by Komax AG (Industriestrasse 6, CH-6036 Dierikon, Switzerland) for their wire-processing machines. Each channel's rating plate reads the same figures: Input 3×230 VAC ±10%, Output 3×0…230 VAC / 1000 Hz, 2 A continuous / 4 A for 60 s — with serials 12012808 and 12012809 on the two plates of this single unit. The connection panel carries the whole drive interface: Motor power terminals (X17/X27), Encoder inputs (X16/X26, DB15), Digital I/O blocks (X15/X25), RS232 (X14/X24), Auxiliary ports (X13/X23, DB9), CAN 1 Mbit/s on RJ45 (X8/X9), a Security terminal block (X12/X22), the Power Supply block (PE, L1, L2, L3, DC+, DC−), and the Ready/Power/RCS/Error LED columns. This unit is one drive, used and graded 90% new with tested function per the record, intake recorded 19 January 2026, record weight 3 kg. Ten photos and an inspection video document both axis panels, the ratings and the heatsink.
Part details
| Field | Value |
|---|---|
| Brand | Komax AG — Industriestrasse 6, CH-6036 Dierikon, Switzerland |
| Type | ACS204-A dual-axis servo drive, ACS204AK22 — serials 12012808 / 12012809 |
| Supply | 3×230 VAC ±10% |
| Output (per axis) | 3×0…230 VAC, 1000 Hz carrier — 2 A continuous / 4 A for 60 s |
| Axes interface | Motor power terminals (X17/X27), Encoder DB15 (X16/X26), Digital I/O 9-way (X15/X25) per axis |
| Communications | CAN 1 Mbit/s on RJ45 (X8/X9), RS232 (X14/X24), Auxiliary DB9 (X13/X23) |
| Power / safety | X1 power block: PE, L1, L2, L3, DC+, DC−; Security terminal block X12/X22; Ready/Power/RCS/Error LEDs per axis |
| Condition | Used, graded 90% new, functionally tested per the record; intake 2026-01-19, record weight 3 kg |
Values are read from the type plates and the photographed panels; the condition grade follows the record.
Why the two-axis format earns its housing
Komax's wire-processing lines drive paired axes — feed and cut, bend and press — that start and stop in tight coordination, and putting both amplifiers in one housing is how the ACS204-A serves them: shared DC bus, shared cooling, one CAN segment for both channels, and the security block gating both axes from a single point. The per-axis ratings are modest by design — 2 A continuous, 4 A for sixty seconds, up to a 230 V three-phase motor at a 1000 Hz carrier — which is the right class for the small synchronous motors that move wire, blades and press heads at production rate. The 9-way Digital block per axis carries the machine's enable, homing and fault I/O without an interposing terminal rail, and the RS232 port is the setup window for commissioning.
The unit here is used stock in clean condition: the heatsink fins are unbent, both type plates are legible with consecutive serials, the blue covers carry their service seal, and every connector face is photographed — the two axis panels, the power block and the status LEDs. For a Komax line down on one axis or a workshop keeping a tested spare on the shelf, a drive with both channels intact and matched serials is the swap that restores the pair in one move.
Photos and video
All images below are original KOEED warehouse photos. Click any photo to view it full size.
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