Latch-Out/Reset Zone Control Units

Latch-Out/ Reset Zone-Control Unit Part No. LRR-044 (Shown above)

These latch-out/reset zone-control units are a combination redundant safety-stop relay and diagnostic manager for up to eight (8) stop control devices including interlock switches, light curtains, cable-pull switches, and safety mats*. These latch-out units are category 0 stop devices as described in EN 205 and NFPA 79 safety standards. Each LRR series latch-out model has control reliability and provides an interface between the safeguarding devices and the machinery and/or robotic equipment. Their purpose is to latch-out the safeguard(s) so when an interruption occurs, the machinery will stop. This system also prevents restart until all safeguards are clear or closed, and the latch-out/reset unit is reset by an authorized person using the security code.

A 20-key membrane keypad is used to program up to eight (8) safeguarding devices along with the security code. A 4-line x 20-character LCD (liquid crystal display) is used to display messages that indicate the condition of the latch-out/reset unit.

*When interfacing safety mats to this latch-out/reset unit, a mat interface or mat controller is required to ensure proper operation.

Keypad and 4-Line x 20-Character Display (Shown above)

Red and green lights on the enclosure door of the latch-out unit indicate the status of the safe-guard(s). A green light indicates that all safeguards are clear or closed. A red light indicates a safeguard violation, and the system will display a message of the safeguard(s) that have been interrupted. The red light will remain illuminated until the unit is reset with the programmed security code (up to seven digits).

Models are available with a beacon indicator light that is mounted on top of the latch-out unit and visible from 360 degrees. The green light on the beacon indicates that the safeguard is clear or closed. The red light will illuminate when a safeguard has been violated and the unit is latched out. Other models have an audible alarm included with the beacon indicator that emits a high-frequency signal upon intrusion of any safeguard wired to the latch-out unit.

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