RS485 / Modbus-RTU Absolute Encoder SAS/M58
Core functional components are 100% domestically sourced, ensuring supply chain stability and consistent product reliability.
High-precision magnetic sensing technology, available in single-turn and multi-turn absolute encoder versions.
Supports RS485 free communication protocol or Modbus-RTU interface for flexible data exchange and system integration.
Single-turn resolution up to 21 bits; multi-turn resolution up to 14 bits for accurate position measurement.
High resistance to shock and vibration, suitable for demanding industrial operating conditions.
Integrated reverse-polarity and short-circuit protection to reduce the impact of wiring and installation errors.
Product Specifications (RS485 / Modbus-RTU Version)
| Parameter | SAS/M58A (Solid Shaft) | SAS/M58C (Blind Hollow Shaft) |
|---|---|---|
| Mechanical Type | Ø 58 mm Solid Shaft | Ø 58 mm Blind Hollow Shaft |
| Shaft Diameter | Ø 6, 8, 10, 12, 15 mm (custom sizes available) | |
| Housing Material | Aluminum (optional stainless steel housing) | |
| Communication Interface | Free protocol; Modbus-RTU | |
| Baud Rate (bps) | 4800; 9600; 19200; 38400; 57600; 115200 | |
| Address Range | 0–99 | |
| Output Circuit | RS485 compliant, opto-isolated | |
| Operating Mode | Single-turn or multi-turn | |
| Supply Voltage | Standard 10 ~ 30 VDC | |
| Single-turn Resolution | Standard: 12-bit (4096), 13-bit (8192), 16-bit (65536), 18-bit (262144), max. 21-bit | |
| Number of Turns | 1 turn (single-turn); multi-turn standard: 12-bit (4096 turns); multi-turn optional: up to 14-bit (16384 turns) | |
| No-load Current | ≤ 30 mA | |
| Data Update Time | Single-turn: ＜ 15 μs; multi-turn: ＜ 1 ms | |
| Parameter Configuration | Counts per turn adjustable; total multi-turn range adjustable; direction configurable; preset position configurable; external zero configurable; baud rate, communication address, operating mode configurable | |
| Data Format | Hexadecimal | |
| Protection Functions | Reverse polarity protection: Yes; short-circuit protection: Yes; lightning & ESD protection: Yes | |
| Mechanical Performance | Max. speed: 6000 r/min | Shaft load: radial 200 N, axial 100 N |
| Environmental Rating | Protection class: IP65 or IP68; starting torque: ＜ 0.01 Nm | |
| Temperature Range | Operating: −30 °C … +85 °C (−40 °C optional); storage: −40 °C … +100 °C | |
| Mechanical Strength | Shock resistance: 1000 m/s², 6 ms (100 g); vibration resistance: 20 g | |
| Connection Type | Shielded cable 4×2×0.2, 8-core; M12 5-pin / 8-pin; M23 12-pin male flange connector | |
| Cable Outlet | Radial outlet; axial rear outlet | |
Electrical Connection (Wiring Definition)
| Signal | VCC | 0V | 485A | 485B | P-set | Set-Allow | 4–20mA+ | 4–20mA− | G* |
| Cable Color | Brown | White | Green | Yellow | Gray | Blue | Pink | Black | Shield |
| Connector Pin | 2 | 1 | 3 | 4 | 5 | 7 | 6 | 9 | 8 |
1) P-set External Preset Line:
Preset reference position
(any preset value selectable via configuration software)
2) Set-Allow Configuration Enable Line:
When powered by VCC, the default baud rate is 115200 bps;
functional parameters can be configured.
3) Shield:
Cable shielding connection
Pin Connector
| Connector Type | M12-5 pin | M12-8 pin | M23-12 pin |
|---|---|---|---|
| Top View |
|
||
Mounting Dimensions
SAS/M58A
SAS/M58B
SAS/M58C
SAS/M58D
*Note: Axial cable outlet length is 42 mm; radial cable outlet length L is 53 mm.
*Aluminum housing: d = 59 mm; stainless steel housing: d = 61 mm.
*Aluminum housing: d = 59 mm; stainless steel housing: d = 61 mm.
Real-Time Model Code Generation
| SA | ① | 58 | ② | - | ③ | ④ | ⑤ | - | ⑥ | - | ⑦ | ⑧ | ⑨ | - | ⑩ |
Note: Special shaft/bore sizes or cable lengths are available upon request.
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