S- / T-encoder

The following data are typical guidelines and can therefore deviate for the specific motor.

Encoder type

Technical description

Manufacturer /
designation
S

Sick Stegmann

SKS 36

SRS 50

Digital resolution: 15 bit/revolution

Analog resolution: 128 / 1024 periods/revolution

Measuring principle: optical ( )
Protocol: Hiperface

Electronic type plate ( )
T

Sick Stegmann

SKM 36

SRM 50

Digital resolution: 15 bit/revolution

Analog resolution: 128 / 1024 periods/revolution

Measuring principle: optical ( )
Protocol: Hiperface

Electronic type plate ( )

Output signal Hiperface

The Hiperface encoder interface is a hybrid interface with an analog process data channel with SIN/COS track and a digital, bidirectional RS485 interface for serial transmission of the absolute position between an encoder and the evaluation electronics. The absolute value is created when the device is switched on and communicated to the drive controller through the RS485 interface.

Output signal (SIN/COS track)

Signal sequence depicted for clockwise turning of the motor shaft with direction of view toward the A bearing side of the shaft.

2,5 V

The encoders are temperature-compensated and deliver standardized output signals.

Technical data of the encoders
Data

S-encoder

T-encoder

SKS 36

SRS 50

SKM 36

SRM 50
Voltage supply

VDC

7 - 12

7 - 12

7 - 12

7 - 12
Current consumption without load (8 V)

mA

60

80

60

80
Mechanically permitted speed

1/min

12000

12000

12000

12000

Analog signals (SIN/COS)
Analog resolution

Per./rotation

128

1024

128

1024
Signal level

VSS

1 ± 0.2

Offset

V

2.5 ±0.5

2.5 ±0.5

Absolute position values

Signal characteristic

 

RS485

RS485
Digital resolution

Pos./rotation

4096
(12 Bit)

32768
(15 Bit)

4096
(12 Bit)

32768
(15 Bit)
Rotations

 

1

4096
(12 Bit)

Note on startup

When switching on the power supply, or when doing a homing cycle, the encoder must not turn because the digital position is read twice and plausibility checked. If the difference between both read positions is out of the internal defined range, the diagnosis message info 1 = 7 is issued.