| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. NO-LOAD SPEED TEST | |||
| A1 | Upward speed measurement (no load) Acceptance: Measured speed ≥ design speed - 2%; ≤ design speed + 2%; measured using laser tachometer or encoder | Cl. 15.1 — Speed within ±2% of rated | OK NC NA HOLD |
| A2 | Downward speed measurement (no load) Acceptance: Downward speed ≤ upward speed; within ±2% of rated speed; same tolerance band | Cl. 15.1 — Descent speed = ascent speed | OK NC NA HOLD |
| A3 | Speed stability throughout travel (no load) Acceptance: Speed variation ≤ 2% between any two measurement points; no flutter or hunting; smooth profile | Cl. 15.1 — Speed must remain constant | OK NC NA HOLD |
| B. RATED LOAD SPEED TEST | |||
| B1 | Upward speed at rated load Acceptance: Speed ≥ design speed - 3%; ≤ design speed + 2%; measured repeatedly (≥ 3 runs) | Cl. 15.2 — Speed maintained under rated load | OK NC NA HOLD |
| B2 | Downward speed at rated load Acceptance: Speed stable; within ±3% of upward speed; no unintended acceleration; smooth deceleration | Cl. 15.2 — Descent with load stable | OK NC NA HOLD |
| B3 | Motor current during rated load operation Acceptance: Motor current ≤ 110% of rated FLA; balanced three-phase (within ±5%); stable over full travel height | Cl. 15.2 — Current within rated motor range | OK NC NA HOLD |
| C. ACCELERATION AND DECELERATION | |||
| C1 | Acceleration rate measurement (upward) Acceptance: Acceleration ≤ 1.0 m/s²; measured using accelerometer; jerk ≤ 0.5 m/s³; smooth ramp-up | Cl. 15.1 — Acceleration controlled | OK NC NA HOLD |
| C2 | Acceleration consistency (multiple runs) Acceptance: Acceleration variation ≤ ±10% across runs; consistent control algorithm; reproducible profile | Cl. 15.1 — Repeatability check | OK NC NA HOLD |
| C3 | Deceleration rate measurement Acceptance: Deceleration ≤ 1.0 m/s² for passenger comfort; jerk ≤ 0.5 m/s³; smooth brake engagement | Cl. 15.1 — Deceleration smooth and safe | OK NC NA HOLD |
| C4 | Arrival velocity (final approach to floor) Acceptance: Arrival velocity ≤ 0.2 m/s; floor leveling ±25 mm; no bump or jerk at stop | Cl. 15.1 — Smooth stop at floor level | OK NC NA HOLD |