MEGATRON Elektronik GmbH & Co. KG ▪ Hermann-Oberth-Strasse 7 ▪ 85640 Putzbrunn / Munich
Tel.: +49 89 46094-0 ▪ www.megatron.de ▪ info@megatron.de
Date: 07/04/2022
Page 11
Specications are subject to change without notice
Series ETS25KAbsolute Encoders with Serial Output (SER/SPI/SSI)
Series ETS25K – singleturn, digital output, not redundant
Electrical data ETS25K – singleturn, digital output, not redundant
Output signal SER SPI SSI
Eective electrical angle of rotation 1.) 360°
Independent linearity (best straight line) 1.) ±0,4% @ 360° ±0,3% @ 360°
Absolute linearity 1.)
±0,8% @ 360° ±0,6% @ 360°
UVW signal outputs for motor commutation
NO NO YES (option)
Amount of pole pairs (UVW)
- - 1 to 16
Resolution
12 Bit 14 Bit 12 Bit
Update rate 96 µs 200 µs 100 µs
Supply voltage 5 VDC ±10 % 24 VDC (9 to 30 V)
Power consumption (no load) ≤ 14 mA ≤ 12 mA ≤ 20 mA
Insulation voltage 1.) 1000 VAC @ 50 Hz, 1 min
Insulation resistance 1.)
2 MOhm @ 500 VDC, 1 min
MTTF (EN29500-2005-1) 1267a 2046a 535a
Key features ETS25K:
SSI, SPI or SER interface
SSI interface: Option UVW signal output for motor commutation of DC motors selectable
from 1 to 16 pole pairs
SPI, SER interfaces: Signal transmission only possible via short signal cables
Supply voltage SSI: 24 VDC (9 to 30 V), SER and SPI: 5 VDC +/-10%
1.) According IEC 60393
Order code ETS25K – singleturn, digital output, not redundant
Description
Selection: standard=black/bold, possible options=grey/italic
Series
ETS25K
Supply voltage / output signal:
24 VDC (9 to 30 V) / SSI (12 Bit)
24 VDC (9 to 30 V) / SSI (12 Bit), UVW, 1..16
5 VDC ± 10% / SPI (14 Bit)
5 VDC ± 10% / SER (12 Bit)
24SSI
24SSI UVW [1..16]
05SPI
05SER
Electrical connection, cable length:
Flat ribbon cable, standard length 0.15 m (for SPI and SER)
Flat ribbon cable with custom length [x.xx m] (for SPI and SER)
Round cable, standard length 1 m (for SSI)
Round cable with custom length [x.xx m] (for SSI)
F0,15
FX,XX
R1,00
RX,XX
Order example ETS25K – singleturn, digital output, not redundant
Requirement:
14 Bit/5 VDC/SPI, at ribbon cable 0.15 m
Example for order code:
ETS25K 05SPI F0,15
Order example ETS25K singleturn, serial output, not redundant, UVW signals
Requirements:
electronics 12 Bit/24 VDC/SSI + UVW signal output, DC-motor with 12 pole pairs, round cable 1 m
Example for order code:
ETS25K 24SSI UVW 12 R1,00
MEGATRON Elektronik GmbH & Co. KG ▪ Hermann-Oberth-Strasse 7 ▪ 85640 Putzbrunn / Munich
Tel.: +49 89 46094-0 ▪ www.megatron.de ▪ info@megatron.de
Date: 07/04/2022
Page 12
Specications are subject to change without notice
Series ETS25KAbsolute Encoders with Serial Output (SER/SPI/SSI)
Cable/colour assignment for option 05SPI, not redundant
Function: Option R (round signal cable) Option F (atribbon cable)
VSUP red Lead 1
GND black Lead 2
CS, MOSI yellow Lead 3
CLK green Lead 4
DATA orange Lead 5
- brown n/c
Cable / colour assignment SSI interface with UVW (optional)
Function: Option F (atribbon cable) Option R (round signal cable)
GND Lead 2 black
VSUP Lead 1 (red) red
CLK+ Lead 3 brown
CLK- Lead 4 orange
DATA+ Lead 5 yellow
DATA- Lead 6 green
U (optional) blue
V (optional) violet
W (optional) grey
Cable and pin assignment for option 05SER, not redundant
Function: Option R (round signal cable) Option F (atribbon cable)
VSUP red Lead 1 (red)
Chipselect (CSN) yellow Lead 2
Clock (CLK) green Lead 3
Data out (DO) orange Lead 4
Ground (GND) black Lead 5
- brown n/c
Please pay attention to the limiting factors in the cable lengths / transmission limits of the serial communication.