Routing High and Encoder Interface

The Ultra5000 main encoder feedback connector is CN2. The motor encoder

interface circuitry features include:

• 2.5 MHz maximum line frequency

• RS-485 serial channel for communicating with intelligent encoders

• Hall input for start-up commutation only

• Interpolation of sine/cosine encoders

All encoder signals are filtered using analog and digital filtering. The inputs

also include illegal state change detection. Refer to Figure 2.5 for a schematic

of the motor encoder inputs.

Hardware latches can be used for latching the encoder position based on an

index input or a digital input transition. Low Voltage Cables

Be aware that when you connect and route power and signal wiring on a

machine or system, radiated noise from nearby relays (relay coils should have

surge suppressors), transformers, and other electronic drives can be induced

into motor or encoder feedback, communications, or other sensitive, low

voltage signals. This can cause system faults and communication problems. To

minimize the levels of radiated noise, route machine power and signal lines

separately.