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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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1 in stock
Single-axis digital brushless AC servo drive, 10.6 A continuous / 21.2 A peak, 90–264 VAC 47–63 Hz input, resolver feedback, 25-pin command I/O and pluggable power terminals.
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| MFR / Brand | Pacific Scientific |
|---|---|
| Model | SCE904-001-01 |
| Type | Servo Drive |
|---|---|
| Industry Terms | Servo drive; servo amplifier; servocontroller; brushless amplifier; resolver servo drive; single axis drive |
| Application Types | Machine tools; packaging machinery; indexing and positioning axes; web handling; general single-axis brushless servo motion |
| Connector Style | 25-pin D-sub command I/O (J4); pluggable screw terminal blocks for AC input (J1) and motor output (J2); dedicated resolver connector (J3) |
| Output Amperage | 10.6 A continuous / 21.2 A peak |
| Mpn Variants | SCE904-001-01; SCE904001-01; SCE904 001 01; SCE 904-001-01 |
| Manufacturer Status | Obsolete; Pacific Scientific motion line now Kollmorgen / Danaher Motion; supported via third-party repair |
| Current Type | AC |
| Nominal Rated Input Voltage | 90–264 VAC, 47–63 Hz |
| Part Number | SCE904-001-01 |
| Mounting Type | Panel mount, integral extruded heatsink |
The SCE904-001-01 is a single-axis digital brushless AC servo drive from the Pacific Scientific SCE900 family. A single DSP closes the current, velocity and position loops, and all system and application parameters are set in software rather than by trimpot, so these drives hold their calibration and repeat from unit to unit.
Convection cooling: 10.6 A continuous at 25 °C, 21.2 A peak
Forced-air cooling: 10.6 A continuous at 50 °C, 21.2 A peak
Input: 90–264 VAC, 47–63 Hz
Feedback: resolver
Approvals: UL and CE marks present on the chassis
Chassis: black extruded heatsink for panel mounting
The front panel carries a dedicated RESOLVER connector (J3). SCE900 drives are built around resolver feedback rather than incremental encoder feedback. Resolvers are absolute within one turn, tolerate heat, coolant and vibration that shorten optical encoder life, and establish commutation without a home sequence.
The SCE900 uses Pacific Scientific’s Signature Control, a form of sinusoidal commutation for brushless motors that reduces electro-magnetic ripple torque to about ±2 %. On a low-speed indexing axis or a surface-finishing spindle, torque ripple shows up directly as chatter or witness marks, which makes the ripple figure the specification governing usability at creep speed.
J1 — pluggable AC input terminal block marked PE, L1, L2, L3
J2 — pluggable motor output terminal block marked W, V, U
J3 — resolver feedback
J4 — 25-pin D-sub COMMAND I/O
One drive only. Supplied without motor, resolver cable, motor power cable, serial setup cable, setup software or manual, and without terminal-block mating plugs beyond those fitted. Parameters in a used drive reflect the machine it came out of.
Pacific Scientific’s motion products passed to Danaher Motion and are now catalogued under Kollmorgen. The SCE900 family is long obsolete and is supported through third-party repair houses rather than new supply. Related part numbers in the same family include SCE904-002-01 and SCE904AN-001-01; these are different configurations, not alternates, distinguished by the configuration code. Also written SCE904001 01, SCE 904-001-01, SC904-001-01.
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A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
When an HMI panel goes dark or a PLC module stops communicating, the machine it
If you have ever watched a machine glide smoothly back and forth, tracing a perfect
Our team can locate, cross-reference, and source all parts.
Our team can locate, cross-reference, and source all parts.
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