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2TLA010028R2000

The ABB 2TLA010028R2000 is a universal safety relay (series RT7A) with 24 V DC coil, used for safety‑related control in industrial machinery and systems. It is designed to monitor safety devices such as emergency‑stop buttons, safety switches or interlocks, safety mats/edges, light curtains/beams, contact strips, enabling devices, gates/doors guards — and on fault or unsafe condition, to switch off outputs safely.

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Technical Parameters Parameter / Feature Specification / Detail Product / Series RT7A safety relay — 2TLA010028R2000 Supply Voltage (Coil) 24 V DC Output Contacts (Safety Outputs) 2 × NO (normally open) + 2 × NO (second set, or delayed) + 1 × NC (normally closed) — often described as 2NO/2NO/1NC output form Delayed Outputs Two outputs have a delay function (1.5 s nominal) for controlled safety stop Input Channels Single‑ or dual‑channel input configuration (for redundancy / safety wiring) Reset Mode Automatic reset or manual supervised reset selectable Auxiliary / Information Outputs 1 NC “information” output + up to 3 potential‑free transistor information outputs (for status signaling, not safety outputs) Mounting / Terminals 35 mm DIN‑rail mounting; screw‑clamp terminal blocks / quick release terminal blocks Enclosure / Protection Rating Enclosure: IP40; Terminals: IP20 Dimensions (W × H × D) 45 mm × 84 mm × 120 mm Power Consumption / Supply ~ 4.6 W (with 24 V DC supply) Safety Category / Performance Level Safety Category 4 (when correctly wired), suitable for safety‑relevant applications (guard interlocks, emergency stop, light‑curtains etc.) Typical Applications Safety‑interlocks, emergency‑stop circuits, light‑curtain or light‑beam monitoring, safety gate/door guards, enabling devices, safety‑mat / edge detection, output expansions with safety functionality, delayed output stop, machine safety circuits