The Technical Standards and Safety Authority (TSSA) has issued a Director’s Safety Order on Smartrise SRA (V3 CEDES) Controllers with single door zone sensor.
This order applies to elevators:
- with a Smartrise SRA (V3 CEDES) traction controller;
- registered and installed using CSA Standard B44 Elevators and Escalators; and
- with a single sensor to determine position for the levelling and Unintended Car Movement Protection safety circuits.
Safety Concern
This Director’s Order addresses a safety issue that could result in serious injury or death. During a Category 5 test on a traction elevator equipped with a Smartrise SRA (V3 CEDES) controller, CEDES Absolute Positioning System, and a single door zone sensor (sensing the position 75 mm above or below a landing), a mechanic observed that a single door zone sensor (either Magnet or Optical) can fail, and the elevator may move with the doors open. The car travelled toward the nearest landing with both the hall and car doors open, before stopping at the landing. The failure of the single sensor was not detected.
Actions Required
All owners and licensees shall ensure that their elevators are:
- Assessed in accordance with section 2 not later than June 1, 2025; and
- Have software altered and submit a Minor A Alteration Design Submission in compliance with section 3 of this order not later than December 1, 2025, where applicable.
Elevators not in conformance with the timelines above shall be removed from service until the required actions are completed.
Read the Director's Safety Order for full details.