Digital guide
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- Kollmorgen S406BA-CA
Detailed content
Technical Specifications:
| Parameter | Value |
|---|---|
| Type | Single-turn absolute encoder |
| Resolution | 12 bits (4096 counts/rev) |
| Interface | SSI (Synchronous Serial Interface) |
| Supply Voltage | 5 VDC ± 10% |
| Output Protocol | SSI (binary code) |
| Clock Frequency | Up to 1 MHz |
| Update Rate | 400 μs |
| Operating Temperature | -10°C to +70°C |
| Protection Rating | IP54 |
| Shaft Type | Solid shaft, 6 mm diameter |
| Max Speed | 5000 RPM |
| Weight | ~75 g |
| Connector | M12 8-pin |
| Housing Material | Zinc die-cast with plastic end cap |
| Housing Diameter | 40 mm |
| Housing Length | 52 mm |
Functional Features:
- 12-bit SSI output — 4096 positions per revolution
- Binary code output — simple position readout
- Compact 40 mm housing — fits in tight spaces
- Low cost — economy-grade absolute feedback
- M12 connector — industrial standard, easy replacement
Structural Characteristics:
- Ø40 mm compact cylindrical housing
- Zinc die-cast body with plastic end cap
- M12 8-pin connector (IP54 rated)
- Solid 6 mm shaft with set screw
Working Principle:
An LED reads a glass code disk with 12-bit binary track patterns. A photodetector array converts the pattern to digital data. The SSI protocol clocks out 12 bits of position data plus a zero bit on each clock cycle. The drive latches the data on the clock falling edge.
Key Advantages:
- Low cost absolute feedback — eliminates homing routines
- 40 mm form factor — smallest in Kollmorgen absolute encoder range
- M12 connector — widely available, easy field replacement
- SSI simplicity — no addressing, no configuration needed
Applicable Industries:
- Conveyor position tracking
- Valve actuators
- Gate and barrier positioning
- Agricultural equipment
- Simple automation axes
Installation Requirements:
- SSI clock ≤ 1 MHz
- Use shielded cable for clock and data lines
- M12 connector — ensure proper mating torque
Usage Precautions:
- Do not exceed 5000 RPM
- Operating temperature limited to +70°C (lower than S700 series)
- Keep code disk area clean
- IP54 rating — do not submerge in liquid












