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:
Current firmware version limitations:
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:
||IONI drive pin
||IONICUBE D-Sub 15 pin number
||Pin 9 is 5V supply output from IONICUBE to encoder
Refer to IONI & IONICUBE user guide for more info on wiring encoders.
BiSS parameters in Granity. Example settings for Hengstler AD36 (AD36/1219
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
- Select SSI Encoder from Feedback deviceFBD
- Select SSI type from Serial encoder typeFBS
- Set number of MT and ST bits into parameters [FBST] and [FBMT]. If MT not specified in encoder data sheet, set it zero.
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