SIL 3 fail-safe output slice for ET 200SP
The Siemens 6ES7136-6DB00-0CA0 is a fail-safe digital output module for the ET 200SP distributed I/O system, delivering 4 transistor outputs rated 2 A per channel at 24 V DC. Its SIL 3 certification per IEC 61508 means it can be used in safety circuits up to that integrity level — think emergency-stop chains, light-curtain muting, or guard-door monitoring where the output must switch off within the safety reaction time.
Channel ratings and load switching limits
Each of the 4 outputs handles up to 2 A continuously, with the module total capped at 6 A — derating applies above ambient, per the manual. The switching frequency depends on the load type: resistive loads switch at up to 30 Hz, while inductive loads (DC-13 per IEC 60947-5-1) are limited to 0.1 Hz. Lamp loads are symmetrical at 10 Hz max. Short-circuit and overload protection are built in, with a typical response threshold of 2.9 A.
Diagnostics, wiring, and base unit fit
The module provides per-channel diagnostics (open-circuit detection, short-circuit alarm) with a red ERROR LED and a green/red DIAG LED. I&M data (I&M0 to I&M3) is supported for asset tracking. It mounts on a BU type A0 base unit, which provides automatic encoding — no manual addressing.