Smartrise issued a mandatory Technical Service Bulletin – TSB-0016 on December 10, 2024. TSSA is releasing a Director’s Order in 10 days to address safety concerns and to require the fix. We are sharing an advanced copy of the Director’s Order with you to ensure it is written clearly. See attached.
Advice on wording can be shared tssaadvisorycouncil@tssa.org by February 18, 2025.
Background:
During a Category 5 (CAT5) safety test on a traction elevator equipped with a Smartrise SRA (V3 Cedes) controller, SRA with CEDES Absolute Positioning System, and a single door zone sensor, a potential safety concern was identified:
1. The single door zone signal can fail, and the elevator may run with the doors open.
2. Unintended car motion will not be detected as the system believes the elevator is always within a door zone. Further testing of the Unintended Car Movement Protection revealed that the car could drift 2438 mm (6-8 ft.) before stopping and does not meet the maximum 1220 mm (48 in.) required by Unintended Car Movement Protection.
3. No injuries were reported.
Best regards,
TSSA Advisory Council
