How do you calculate accepted door cycles?

Multiply door events per cycle by scheduled cycles to get gross cycles, then multiply by uptime and acceptance yield. With 2 events, 18,000 cycles, 94% uptime, and 98% yield, gross is 36,000 and accepted is 33,163.2 door cycles.

What does door open/close events per cycle mean?

Each test cycle typically counts one open and one close, so the default of 2 captures both motions. If your protocol logs a full open-close as a single cycle, set this to 1 to avoid double counting.

How many cycles lost to downtime in the example?

Gross cycles are 36,000 and the 94% uptime removes 6%, or 2,160 door cycles lost to operator and rig downtime before any yield loss is applied.

What is door cycle acceptance yield?

It is the fraction of completed cycles that pass acceptance criteria — proper closing force, timing, reversal on obstruction. A 98% yield holds 2% (about 676.8 cycles here) for adjustment or re-run rather than counting them as validated.

How many door cycles should an endurance test run?

Code and spec drive this; many door operators are validated to hundreds of thousands of cycles, with sample endurance runs in the tens of thousands. Set scheduled cycles to your applicable standard, then this tool tells you how many accept after losses.

Why are accepted cycles lower than gross cycles?

Because the test rig is not perfectly available and not every completed cycle passes. Uptime trims for downtime and yield trims for cycles held for adjustment, so accepted (33,163.2) is always below gross (36,000).

Elevators, Escalators & Vertical Transport Equipment calculator

Elevator Door Cycle Count Calculator

Elevator doors are the single most cycled — and most failure-prone — subsystem in vertical transport, so manufacturers run endurance testing that drives door operators through tens of thousands of open/close events before shipment. This calculator estimates how many accepted, good door cycles a test program actually delivers once operator uptime and acceptance yield are applied to the scheduled cycle count. Reliability engineers and door test-cell supervisors use it to plan endurance runs, size test windows, and report validated cycle counts to QA. The headline number is not the cycles you scheduled — it is the cycles that count toward proving the door will survive in the field.

What this calculator does

Estimate usable elevator door cycle capacity from openings per cycle, available cycles, uptime, and door-system pass rate.
a quality or maintenance engineer needs to plan door operator endurance, test, or replacement assumptions
It computes gross door cycles from events per cycle and scheduled cycles, then nets out operator downtime and acceptance-yield losses to give accepted door cycles.

Formula used

Gross door cycles = door openings per cycle × available door test cycles
Accepted door cycles = gross door cycles × door system uptime × door cycle acceptance yield

Inputs explained

Door open/close events per test cycle:
Scheduled door endurance test cycles:
Door operator uptime:
Door cycle acceptance yield:

How to use the result

Use it when planning a door endurance test campaign or reconciling how many validated cycles a test cell produced against its schedule.
It applies uptime and yield as flat percentages on the whole run; it does not model when failures cluster, infant-mortality burn-in, or partial-cycle faults that may still carry diagnostic value.

Current U.S. benchmarks

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Common questions

How do you calculate accepted door cycles? Multiply door events per cycle by scheduled cycles to get gross cycles, then multiply by uptime and acceptance yield. With 2 events, 18,000 cycles, 94% uptime, and 98% yield, gross is 36,000 and accepted is 33,163.2 door cycles.
What does door open/close events per cycle mean? Each test cycle typically counts one open and one close, so the default of 2 captures both motions. If your protocol logs a full open-close as a single cycle, set this to 1 to avoid double counting.
How many cycles lost to downtime in the example? Gross cycles are 36,000 and the 94% uptime removes 6%, or 2,160 door cycles lost to operator and rig downtime before any yield loss is applied.
What is door cycle acceptance yield? It is the fraction of completed cycles that pass acceptance criteria — proper closing force, timing, reversal on obstruction. A 98% yield holds 2% (about 676.8 cycles here) for adjustment or re-run rather than counting them as validated.
How many door cycles should an endurance test run? Code and spec drive this; many door operators are validated to hundreds of thousands of cycles, with sample endurance runs in the tens of thousands. Set scheduled cycles to your applicable standard, then this tool tells you how many accept after losses.

Last reviewed 2026-05-12.