Pulse Train Characteristics
Original instructions
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Overview
The PTO function provides a square wave output for a specified number of pulses and a specified cycle time.
The PTO function can be programmed to produce either one train of pulses or a pulse profile consisting of multiple trains of pulses. For example, a pulse profile can be used to control a stepper motor through a simple ramp up, run, and ramp down sequence or more complicated sequences. The control positioning is achieved according to an open loop mode, meaning without the need for feedback information on the real position. The position loop is integrated in the servo-drive.
Characteristics
Number of pulses is from -2,147,483,648 to 2,147,483,647 (32 bits depth)
Maximum frequency:
Average frequency accuracy:
NOTE: There are some limitations in case of usage of USIC + Lexium 05 and a 24 V power supply
Pulse train output modes
There are 3 types of pulse train output mode that can be configured.
Pulse+ /Pulse- (CW/CCW):
Pulse + direction:
A/B phases (Quadrature):
In order to select the axis movement direction in accordance with the motion command direction on the PTO module, the Control Expert Software has 3 pulse-train output configuration modes for the PTO module, each allowing reverse direction.
WARNING
AXIS DIRECTION REVERSED
The following axis adjustment parameter must be taken into account:
  • The PTO module output characteristics: positive direction is defined by the logical state 1 corresponding to the state of the "sink" type active physical output (low state).
  • The type of wiring circuit between PTO module and drive: compatible RS422 input with 5 V polarization, compatible RS422 input with 24 V polarization, 24 V source inputs, drive through USIC accessory.
  • The active input level of drive.
  • The kinematic system (direction depending on the type of axis, gear box used or not...).
Failure to follow these instructions can result in death, serious injury, or equipment damage.