Which statement best describes a Fail-Safe release?

Which statement best describes a Fail-Safe release?

• A. A release that allows the gate to be pushed open during a power failure without affecting limit settings
• B. A release that prevents manual operation during power failure
• C. A release that disengages the drive system when power fails
• D. A release that automatically resets limits upon power return

Answer: (A)

Fail-safe releases are designed so that when power is lost, you can still operate the gate manually without losing the configured travel limits. The release should disengage the drive so you can push or pull the gate by hand, but it must not alter or reset the end-of-travel or limit settings. This combination keeps safety and access intact during a power outage while ensuring the system resumes correct operation when power returns. Why this fits best: it directly describes the core purpose of a fail-safe release—manual operation during a power failure—while preserving the existing limit settings for safe and predictable movement once power is restored. Other ideas, such as preventing manual operation during a power loss, or automatically resetting limits when power returns, don't align with the need for safe, controllable manual override and stable limits.

Fail-safe releases are designed so that when power is lost, you can still operate the gate manually without losing the configured travel limits. The release should disengage the drive so you can push or pull the gate by hand, but it must not alter or reset the end-of-travel or limit settings. This combination keeps safety and access intact during a power outage while ensuring the system resumes correct operation when power returns.

Why this fits best: it directly describes the core purpose of a fail-safe release—manual operation during a power failure—while preserving the existing limit settings for safe and predictable movement once power is restored. Other ideas, such as preventing manual operation during a power loss, or automatically resetting limits when power returns, don't align with the need for safe, controllable manual override and stable limits.