SSI Absolute Encoder SAS/M58

Core components are sourced through a localized supply chain to support supply continuity and stable system operation. High-precision magnetic sensing technology supports both single-turn and multi-turn absolute encoder configurations. Supports the SSI interface with clock frequencies up to 2 MHz for fast and precise position data transmission. Optional TTL or HTL incremental outputs are available to meet diverse control and feedback requirements. Single-turn resolution up to 21 bit and multi-turn resolution up to 14 bit for high-precision position measurement. High shock and vibration resistance with protection ratings up to IP68 ensures reliable operation in harsh industrial environments. Built-in reverse-polarity and short-circuit protection helps protect the encoder against wiring errors.

Product Specifications

Product Series	SAS/M58A	SAS/M58C
Shaft Type	Ø58 mm, Solid Shaft	Ø58 mm, Blind Hollow Shaft
Shaft Diameter	Ø6, 8, 10, 12, 14, 15 mm (Other shaft diameters available on request)
Housing Material	Aluminum (Stainless steel housing optional)
Interface	SSI
Clock Frequency	100 kHz–2 MHz
Function	Single-turn
Supply Voltage	10–30 VDC
Single-turn Resolution	18 bit / 262144; 21 bit / 2097152
Power Consumption	≤1.5 W
Interface Cycle Time	≥16 μs
Control Functions	Counting direction and zero setting
Output Code	Gray code or binary code
Reverse Polarity Protection	Yes
Short-circuit Protection	Yes
Surge and ESD Protection	Yes
Operating Speed	6000 rpm
Shaft Load	Radial: 40 N; Axial: 20 N
Degree of Protection	IP65 or IP67
Starting Torque	<0.01 Nm
Operating Temperature	-40°C to +85°C
Storage Temperature	-45°C to +100°C
Shock Resistance	1000 m/s², 6 ms (100 g)
Vibration Resistance	20 g
Electrical Connection	6 × 2 × 0.14 mm², 12-core shielded cable; M23-12
Connection Direction	Radial or axial
Optional Output	TTL; HTL
Incremental Signals	A+, A−, B+, B− (Z+ and Z− available as a custom option)
Pulse Count	1–16384 PPR

Terminal Assignment

Signal	GND	UB	C +	C -	D +	D -	SET	DIR	⏚
M23-12	1	2	3	4	5	6	7	8
Core Colour	White	Brown	Green	Yellow	Gray	Pink	Blue	Black	Shield

Signal	A	A -	B	B -
M23-12	9	10	11	12
Core Colour	Red	Gray/Pink	Violet	Red/Blue

Pin Assignment

Connector Type	M12-5	M12-8	M23-12
Connector Pin View

Note: Other special connectors are available on request.

Interface Type

Clock/Data: Four-wire RS422 interface, ±5 V, with one differential pair for the clock input and one differential pair for the data output.

D1…Dn = Position data

T = 1/f  Clock period, f ≤ 2 MHz

MSB = Most significant bit (first data bit)

Tp = Clock pause > monoflop time

LSB = Least significant bit (last data bit)

Tm = Monoflop time ≥16 μs

SAS/M58A

SAS/M58B

SAS/M58C

SAS/M58D