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Kollmorgen MTC726B1-R1C1
Model Code: MTC726B1-R1C1
Product Overview:
The MTC726B1-R1C1 is a multi-turn absolute position encoder with resolver interface, manufactured by Kollmorgen. It provides high-resolution absolute position feedback over multiple revolutions, specifically designed for servo motor integration.
Detailed content
Technical Specifications:
| Parameter | Value |
|---|---|
| Type | Multi-turn absolute encoder |
| Interface | Resolver (sin/cos) + digital |
| Resolution (Single-Turn) | 17 bits (131,072 counts/rev) |
| Resolution (Multi-Turn) | 12 bits (4096 revolutions) |
| Total Counts | 536,870,912 (29 bits) |
| Update Rate | 100 μs (10 kHz) |
| Supply Voltage | 5 VDC ± 5% |
| Output Signal | Resolver sine/cosine + SSI/BiSS |
| Operating Temperature | -20°C to +85°C |
| Protection Rating | IP67 |
| Shaft Diameter | 6 mm hollow shaft |
| Weight | ~120 g |
| Bearing Type | Precision ball bearing |
| Max Speed | 8000 RPM |
| Electrical Connection | M23 12-pin connector |
Functional Features:
- True multi-turn absolute position — retains position after power loss
- Resolver-based interface for robust signal transmission in high-EMI environments
- Hollow shaft design for direct motor shaft mounting
- Battery-free operation — energy harvested from resolver excitation
- High update rate of 10 kHz for fast servo loops
Structural Characteristics:
- Compact cylindrical housing (Ø47 mm × 67 mm)
- Hollow bore shaft for slip-ring or direct mounting
- Sealed resolver stator and rotor assembly
- Potting compound for vibration and shock resistance
Working Principle:
The encoder uses a precision optical or magnetic code disk with multi-track patterns. A resolver provides both position information and excitation power to the encoder electronics. The resolver’s sin/cos signals are demodulated to extract absolute position data. Multi-turn information is stored in non-volatile memory updated via a gear reduction mechanism linked to the shaft.
Key Advantages:
- No battery required — eliminates maintenance and failure risk
- Resolver interface provides superior EMI immunity vs. incremental encoders
- 12-bit multi-turn covers 4096 revolutions without position loss
- Direct drop-in replacement for resolver-based systems
Applicable Industries:
- Servo motor position feedback
- Robotics joint encoders
- CNC axis feedback
- Gantry and linear motor systems
- Aerospace actuators
Installation Requirements:
- Mount with coupling alignment ≤ 0.02 mm
- Ensure resolver cable shield is grounded at drive end only
- Verify resolver excitation signal is 2–8 Vpp, 2–20 kHz
Usage Precautions:
- Do not exceed max speed of 8000 RPM
- Avoid contamination inside hollow shaft bore
- Do not disassemble — unit is not user-serviceable
