Using SSI encoder

From Granite Devices Knowledge Wiki
Revision as of 11:51, 8 February 2017 by Tero K (Talk | contribs) (Created page with "[ SSI (Synchronous Serial Interface)] is a digital protocol used by many encoder feedback device...")

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Jump to: navigation, search

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:

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
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.


BiSS parameters in Granity. Example settings for Hengstler AD36 (AD36/1219AF.0XBI0:5653).

To configure SSI, use Granity version 1.11.1 or later. Configuration steps:

  1. Find out encoder MT and ST resolutions from encoder manufacturer's data sheet
  2. Select SSI Encoder from Feedback deviceFBD
  3. Select SSI type from Serial encoder typeFBS
  4. Set number of MT and ST bits into parameters [FBST] and [FBMT]. If MT not specified in encoder data sheet, set it zero.

In no event the Product Information or parts hereof shall be regarded as guarantee of conditions or characteristics. The Product Information or any part thereof may also not be regarded as a warranty of any kind. No liability of any kind shall be assumed by Author with respect to Product Information or any use made by you thereof, nor shall Author indemnify you against or be liable for any third party claims with respect to such information or any use thereof.

As content of this Wiki may be edited by user community, Granite Devices Oy or it's affiliates do not take any responsibility of the contents of this Wiki. Use information at your own risk. However, Granite Devices staff attempts to review all changes made to this Wiki and keep information trustworthy.

Without written consent, Granite Devices' Products or Intellectual Property shall not be used in situations or installations where living beings, material property, or immaterial property could be harmed by the operation, features or failures of Product. Products may only be used in a way where hazards like moving parts, electric shock, laser radiation, or fire can't be realized even if the content of this Wiki would suggest otherwise.