Beckhoff AX5000 Series Function Manual

Comissioning a Generic Encoder with BISS-C Interface
Function description 35
Version: 1.5
7.9.1 Try analog signals only
If you do have an encoder with BISS C interface and analogue signals you may choose a setup without
using the digital interface. Choose "Unknown/ 1Vpp..." with the correct sense settings and resolution.
If you get errors related to the sense line (e.g. F705, F707, F879,...), please double check the wiring of the
sense lines or choose a setting without sense line ("5Vfixed"). If you do not get erros related to the power
supply but to the signal amplitude, check wiring of the sine/ cosine signals. If possible you may use a
hardware oscilloscope to look at the signals.
Note
If the AX5000 senses a feedback error it switches the encoder power supply
off!
When you get correct 1Vpp signals, i.e. no error related to that, you may double check the resolution: Does
the position count one revolution when you turn the encoder one rev.? Dou you see the correct distance
when you move the linear encoder?
7.9.2 Change BISS settings
If the analogue signals do not cause an error or there are no analogue signals, but you get feedback errors
related to the digital signals (e.g. F717, F718, F72x,...) please doublecheck the wiring and the number of
position bits.
If you are not sure about that number you may try changing values for "Bit resolution singleturn position" and
"Number of clockcycles to get singleturn position".

Beckhoff AX5000 Series Specifications

General

Brand	Beckhoff
Model	AX5000 Series
Category	Servo Drives
Language	English