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 9
Specications are subject to change without notice
Series ETP25KAbsolute Encoders with Pulse Width Modulation (PWM)
Function description PWM signal output ETP25K
The ETP25K provides a constant carrier frequency with 244 Hz at the signal output, with HIGH and LOW signal levels which
have a constant signal amplitude. A constant carrier frequency means a constant length of the period duration. The duty cycle
and thus the pulse width changes in dependency of the rotating angle between 10% to 90% relative to the signal period.
If the CW option is selected, the duty cycle increases clockwise when turning the shaft clockwise. If the CCW option is select-
ed, the duty cycle decreases clockwise if the shaft is turned clockwise. Normally no signal conversion is required for further
processing of the output signal, because many µControllers already have an input for PWM signals.
Series ETP25K – singleturn, PWM output, not redundant
Key features ETP25K:
PWM signal output
Frequency 244 Hz (constant)
Pulse width (duty cycle) 10% (0°) to 90% (360°)
Supply voltage: 5 VDC +/-10%
Electrical data ETP25K – singleturn, PWM output, not redundant
Eective electrical angle of rotation 1.) 7° ≤ α ≤ 360° (programmable in factory), ±0.5°
Independent linearity (best straight line) 1.) ±0.4% @ 360°
Absolute Linearity 1.) ±0.6% @ 360°
Output signal PWM (pulse width modulation)
Output signal voltage 5 V
Carrier frequency 244 Hz (constant)
Minimum duty cycle 10%, equal to app. 0.4 ms
Maximum duty cycle 90%, equal to app. 3.5 ms
Resolution 12 Bit
Supply voltage 5 V ±10%
Power consumption (no load) ≤ 10 mA
Output load ≥ 5 kOhm
Insulation voltage 1.) 1000 VAC @ 50 Hz, 1 min
Insulation resistance 1.) 2 MOhm @ 500 VDC, 1 min
MTTF (EN29500-2005-1) 1267a
1.) According IEC 60393
Cable and pin assignment
Function Option F (flat ribbon cable) Option R (round cable)
OUT Lead 2 brown
VSUP Lead 1 (red) red
GND Lead 3 black
For details on output programming see page 24.
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 10
Specications are subject to change without notice
Series ETP25KAbsolute Encoders with Pulse Width Modulation (PWM)
Order example ETP25K – singleturn, PWM output, not redundant
Requirement:
VSUP=5 V / OUT=244 Hz, sense of rotation CW, rotation angle 360°, round cable 1 m
Example for order code:
ETP25K 5PWM CW 360 R1,00
Order Code ETP25K – singleturn, PWM output, not redundant
Description
Selection: standard=black/bold, possible options=grey/italic
Series
ETP25K
Supply voltage / output signal:
VSUP=5 V (4.5...5.5 V) / OUT=5 V / 244 Hz / PWM 10-90%
5PWM
Sense of rotation: (when looking at the housing, from the front)
Clockwise
Counterclockwise
CW
CCW
Rotation angle* in [°]:
360
320
270
180
90
Custom rotation angle (≥7°, positive integer)
360
320
270
180
90
XXX
Electrical connection, cable length:
Flat ribbon cable, standard length 0.15 m
Flat ribbon cable with custom length [x.xx m]
Round cable, standard length 1 m
Round cable with custom length [x.xx m]
F0,15
FX,XX
R1,00
RX,XX
* For details see page 24.