Copley Controls Serial Encoder, Руководство пользователя

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Copley Controls Encoder Guide Absolute Encoders
Copley Controls 17
2.4: SSI Encoders (Type 12)
This section describes the use of Synchronous Serial Interface (SSI) absolute encoders with
Copley Controls drives.
2.4.1: SSI Encoder and Drive Communication
SSI encoders provide all digital one way communications to the selected Copley drive.
A train of clock pulses from the drive initiates the transmission of position data by subsequent
clock pulses. The clock and data are wired as differential pairs.
An SSI encoder should have a clock frequency in the range of 1 to 4 MHz. This allows all the data
to be transferred at a speed that is sufficient for the position loop update rate.
2.4.2: SSI Encoder Wiring Example
Below is a typical SSI encoder wiring diagram. See data sheets for detailed wiring specifications.