Incremental Interface; Signal Characteristic Of The Incremental Interface - Pilz PSEN enc m2 eCAM Operating Manual

Installation / Preparation for commissioning

5.9 Incremental interface

To output the absolute position, the standard version of the measuring system also
has an incremental interface in addition to the SSI interface.
•
The measuring system checks the outputs on this interface for external voltage
sources. The measuring system is shut down if voltages > 5.7 V arise. In this
state, the measuring system behaves as though it were not connected.
•
The interface is generally used for position feedback on motor control
applications.

5.9.1 Signal characteristic of the incremental interface

A corresponding number of pulses is output while completing a revolution. To
evaluate the count direction, a 2nd signal sequence with 90° phase offset is output for
the controller.
On the standard version, the incremental resolution of the measuring system is 4096
pulses / revolution. There is no zero pulse.
NOTICE
Risk of damage to subsequent electronics due to
overvoltages caused by a missing earth reference
point!
• If the earth reference point is missing entirely, e.g. 0 V
of the power supply is not connected, voltages equal
to the level of the supply voltage can occur at the
outputs of this interface.
• An earth reference point must be guaranteed to be
present at all times.
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