Difference between revisions of "Using SSI encoder"
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(Created page with "[https://en.wikipedia.org/wiki/Synchronous_Serial_Interface SSI (Synchronous Serial Interface)] is a digital protocol used by many encoder feedback device...") |
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== Configuration == | == Configuration == | ||
| − | [[File: | + | [[File:granitySSI.PNG|thumb|569x569px|SSI parameters in Granity. Example settings for AMS AS5311.]] |
To configure SSI, use [[Granity]] version 1.11.1 or later. Configuration steps: | To configure SSI, use [[Granity]] version 1.11.1 or later. Configuration steps: | ||
# Find out encoder MT and ST resolutions from encoder manufacturer's data sheet | # Find out encoder MT and ST resolutions from encoder manufacturer's data sheet | ||
Revision as of 11:58, 8 February 2017
SSI (Synchronous Serial Interface) is a digital protocol used by many encoder feedback device manufacturers. IONI Pro servo drive supports SSI encoders starting from firmware version 1.6.1.
SSI support details
As SSI is loosely defined standard, drive's SSI support does not cover all possible variations of the protocol. The following list includes currently supported SSI encoders:
- AMS 12 bit SSI encoders
Current firmware version limitations:
- No absolute encoder information is utilized, motor still needs to do Phasing a.k.a. phase search and Homing to get absolute operation.
Wiring SSI encoder
Wiring of SSI depends on the variant of SSI protocol present.
AMS SSI encoder chips
AMS SSI encoders are wired following way to IONI encoder connector:
| Encoder wire | IONI drive pin | IONICUBE D-Sub 15 pin number | Remarks |
|---|---|---|---|
| Cable shield | Connector shell | ||
| GND | GND | 10 | |
| 5V input | 9 | Pin 9 is 5V supply output from IONICUBE to encoder | |
| Clock+ | GPI2 | 12 | |
| Clock- | GPI3 | 11 | |
| Data+ | C+ | 15 | |
| Data- | C- | 14 |
Refer to IONI & IONICUBE user guide for more info on wiring encoders.
Configuration
To configure SSI, use Granity version 1.11.1 or later. Configuration steps:
