Rockwell Automation 1398-DDM-xxx ULTRA 100 Series Drives Installation Manual - Manual (Page 40)

Publication 1398-5.2 – PDF 1997
3-2 Selecting Other System Components
High Performance Microcontroller Technology
All digital current, velocity and position loop calculations as well as
the motor commutation calculation are performed by a
microcontroller.
IPM Technology
IPM (Intelligent Power Module) technology in the output stage
provides a high frequency, digital PWM (Pulse Width Modulation)
sine wave that controls the current loop, including overcurrent, short
circuit and overtemperature protection.
Analog and Digital Interfaces
All ULTRA 100 Series drives allow the user to select one of the
following analog or digital command interfaces:
●
±10 Volt analog interface - velocity or torque control
●
Presets (from one to eight binary inputs) - torque or velocity
control
●
Quadrature encoder digital interface - electronic gearing position
follower
●
Step/Direction digital interface - position control
●
CW/CCW (step up/step down) interface - position control
●
Indexing - position control from a single point in one of three
ways
●
Operating mode override - alternate movement interface
Encoder Control
A single, motor mounted encoder provides complete commutation
information and velocity feedback. Low velocity regulation is
enhanced by the use of a 5000 PPR (pulses per revolution)
incremental encoder.
Encoder Output
A selectable output allows the encoder resolution to be specified for
maximum performance without added circuitry. Outputs are
differential line drivers capable of dividing the motor encoder signal
by a factor of 1, 2, 4 or 8.
Digital I/O
Digital I/O channels allow the user to program the drive to fit the
specific application. Power for the I/O must be supplied by an 12-24
VDC external I/O power source. Selections include:
●
Four selectable (INPUT1, INPUT2, INPUT3 and FAULT
RESET), optically isolated, active high inputs.