Product Overview

The 6ES5262-8MB11​ is a Siemens SIMATIC S5 IP 262 “S-Regler” (S-Controller) closed-loop control module, belonging to the S5 “IP 26x” family of intelligent peripheral processors that execute control algorithms autonomously on-board, offloading the S5-90U/95U/100U rack CPU and preserving scan determinism for the rest of the application logic. Within the IP 262 sub-family, Siemens offered two controller personalities: the “K-Regler” (K-Controller, 6ES5262-8MA12) with three continuous-action control loops, and the “S-Regler” (S-Controller, 6ES5262-8MB11 / -8MB12 / -8MB13) with four independent PID loops plus PDM (pulse-duty-modulation) signal generation and stepping-controller capability. The 6ES5262-8MB11​ represents the earlier hardware revision of the S-Regler line (superseded by -8MB12, then -8MB13), but remains electrically and mechanically interchangeable within the same S5-90U/95U/100U host envelope and is the canonical spare for plants that standardized on the -8MB11 during original build.Architecturally, the 6ES5262-8MB11​ integrates four analog input channels (12-bit, configurable 0–10 V / ±10 V / 0–20 mA) for process-variable acquisition, four analog output channels (12-bit, 0–10 V / 0–20 mA) for manipulated-variable drive, plus four digital inputs and eight digital outputs for enable, alarm, and status signaling. The on-board microcontroller executes four fully independent PID algorithms (P / PI / PD / PID selectable per loop) with built-in self-tuning (auto-tuning) and PDM pulse-generation for driving stepping motors or pulsed actuators directly from the module without external PDM hardware. Control cycle is configurable per loop, typically 5–10 ms per channel for fast process loops. The 6ES5262-8MB11​ draws 5 V DC from the S5 rack backplane and requires an external 24 V DC supply for the I/O and PDM stages, with typical current around 250 mA at 24 V DC. Siemens declared the 6ES5262-8MB11​ End of Sales effective December 1, 1999, placing it deep in the legacy-spare bracket, but the S5-90U/95U/100U installed base—packaging machines, small process skids, textile winders, building-plant aux—still runs plenty of -8MB11 units where migration to S7-1200 + TM 2x has not yet been justified.

Technical Specifications