The SERVOSTAR provides a motor position output to you in the form of quadrature encoder signals, eliminating the need for an additional position feedback device. The outputs are differential line drivers. There is an associated DC common output (C4: pin 3) which can connect to your port to keep common mode noise and voltage spikes minimized for device protection. Because there are normally differences of potential between your controller and the drive, connection is recommended (if ground loops occur, disconnect and retest).
PRD-AMPB25EZ-00 Resolver Systems
The output signal is developed through the R/D hardware circuitry for minimal phase lag and has a maximum frequency determined by the motor speed and R/D limits. It provides a configurable (ENCOUT) resolution of up to 16384 lines (65536 quad counts) per revolution of the motor shaft. The placement of the index pulse (INDEXPOS) can be varied on resolver systems within 360 electrical degrees of the feedback signal. For single-speed resolvers, this means you can vary the position of this signal over one mechanical revolution. For multi-speed resolvers, the mechanical position variation is determined by the pole-pair count of the resolver (e.g., three-speed resolver gives mechanical variation of the pulse within 1/3 of a revolution).
PRD-AMPB25EZ-00 Encoder Systems
The output signal is the actual encoder feedback signal that is pre-configured (MENCRES) in the drive’s motor parameters. It can be scaled down by multiples of two (ENCOUTO: 1, 2, 4, 8, 16) and has a maximum frequency limit of 3 MHz.
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