HEIDENHAIN PWM 20 - Manual (Page 183)

186 HEIDENHAIN ATS Software User's Manual
6.2.9 Checking a commutation encoder with Zn and Z1 track (e.g. ERN 1387)
Before start-up, permanent-magnet three-phase motors must have an absolute position value
available for electrical commutation.
Special incremental rotary encoders feature a second track, the Z1 track (CD track).
The Z1 track provides one sine and one cosine signal (C and D) per motor shaft revolution in
addition to the incremental signals.
If such encoders are connected to the ATS software, a Z1 button appears in order that the
second track can be checked.
Designation of the output signals: Zn/Z1/R or AB/CD/R
Zn or A/B designates the incremental track with a high line count "Zn", e.g. n = 2048 lines.
R is the reference signal.
Z1 or C/D is the commutation track providing one sine and one cosine signal per revolution
(line count Z = 1).
For signal levels and tolerances, refer to the chapter Interface description, “Incremental signals
1Vpp with commutating signals” on page 215.
Attention
Adapter cables: see User's Manual "PWM 20 Cable and Connection Technology".
Signal converters may be required for the HEIDENHAIN layout.
Adapter cables are in preparation. If you have any questions, please contact the
HEIDENHAIN helpline.