Technical Specifications:

• Series: S400 (Legacy — replaced by S7200 / AKM)
• Frame Size: 44 (approximately 44mm flange — between S7200 frame 40 and frame 60)
• Stack Length Code: 6 = Long stack (high torque for frame 44)
• Winding/Feedback Code: CA = Specific winding + incremental encoder (1Vpp sinusoidal, 2500 lines)
• Rated Torque (Continuous): Approximately 3.0 Nm
• Peak Torque: Approximately 9.0 Nm
• Rated Speed: Up to 3000 RPM
• Voltage Rating: 200–480 VAC
• Insulation Class: Class F (155°C) — note: older than Class H in S7200
• Protection Rating: IP40 (standard)
• Weight: Approximately 2.2 kg
• Encoder: Incremental, 2500 lines/rev, 1Vpp sinusoidal (RS422 differential), TTL index (Z) channel

Material Composition:

• Stator Lamination: M19-29G silicon steel
• Rotor: N35 NdFeB magnets (lower grade than S7200’s N42SH — consistent with legacy design)
• Windings: Class F (155°C) copper, VPI
• Housing: Cast aluminum (not extruded — older manufacturing process)
• Shaft: 45# steel, hardened, with keyway
• Bearings: Deep groove ball bearings (not angular contact — lower performance than S7200)

Structural Features:

• Round flange (not square — older design)
• 4× M4 mounting holes
• Shaft: Ø12 mm with keyway (3 × 3 mm)
• 1× M16 cable gland
• 1× PTC thermistor
• Balancing: G6.3 per ISO 1940-1 (lower grade than S7200’s G2.5)

Working Principle:
PMSM with trapezoidal or sinusoidal commutation (depending on drive). The incremental encoder provides relative position feedback — the drive must perform homing at every power-up to establish absolute position. The drive uses sine/cosine interpolation for position feedback within each encoder cycle.

Key Advantages (at time of release):

• Proven legacy design — millions installed worldwide
• Available spare parts — Kollmorgen still supports S400 for existing installations
• Lower cost — discontinued pricing may be favorable for legacy system maintenance

Limitations vs. S7200:

• Class F insulation (vs. Class H) — lower thermal margin
• Incremental encoder (vs. absolute) — requires homing
• Deep groove bearings (vs. angular contact) — lower axial load capacity
• G6.3 balancing (vs. G2.5) — more vibration at high speed
• Round flange (vs. square) — different mounting pattern

Applicable Industries:

• Legacy machine retrofits
• Existing Kollmorgen S400 installations (maintenance/spare)
• Low-cost motion control where absolute position is not required

Installation Requirements:

• Mounting: Round flange, 4× M4 bolts, torque 3 Nm
• Encoder cable: 8-wire shielded (A+, A-, B+, B-, Z+, Z-, 5V, GND), max 15 m
• Homing: Must configure limit switches or index pulse homing in drive

Usage Notes:

• This motor is discontinued — Kollmorgen recommends migrating to S7200 or AKM series
• Spare parts available but lead times may be long
• Do not mix with S7200/AKM drives without verifying compatibility (different encoder protocol)
• Class F insulation: derate by 15% if ambient >40°C