Product Overview

The 6ES5482-8MA11​ is a combined 8-input / 8-output digital I/O module within Siemens’ SIMATIC S5-482 family, purpose-engineered for the S5-90U, S5-95U, and S5-100U compact PLC racks as well as the ET 100U and ET 200U distributed I/O stations. Where larger S5 central racks (S5-115U/135U/155U) can afford to split 24 V DC signals across dedicated DI and DO cards — e.g. a 6ES5431-8MA11​ next to a 6ES5451-8MA11​ — the compact “U” chassis has far tighter slot economics: a fully loaded S5-100U local rack holds only so many I/O modules before the expansion is forced, and a machine with, say, 8 sensors and 8 actuators would consume two slots for discrete cards. The 6ES5482-8MA11​ collapses that into one slot: eight 24 V DC digital inputs (floating / galvanically separated channel design) on the acquisition side, eight 24 V DC sourcing digital outputs at 0.5 A per channel (2 A per output group) on the drive side, all on a single S5-482 footprint.The input side of the 6ES5482-8MA11​ is specified for 24 V DC with a typical “1”-signal current around 6 mA, making it compatible with the same NPN/PNP sink-type field devices (proximity switches, limit switches, pushbutton masses, safety-guard interlocks) that the 6ES5431-8MA11​ serves elsewhere in the S5 ecosystem. The output side delivers 24 V DC sourcing drive at 0.5 A per point — suitable for small relays, indicator beacons, solenoid pilot valves, contactor pilot coils, and other DC-loaded actuators common on compact machines. Each output group (the eight outputs are arranged as internally grouped pairs/quartets with a 2 A collective rating) is protected against overload, and front-panel LEDs give per-channel visual status for both the DI and DO sides — halving the diagnostic walk-time compared to split cards because the technician sees sensor-state and actuator-state on the same front fascia.Like the rest of the S5-48x combined-I/O range, the 6ES5482-8MA11​ sits in Siemens’ discontinued/spare-only lifecycle (PM410 class, no official successor with identical pinout), making it a continuity-engineering SKU for plants that still run S5-90U/100U compact controllers on packaging lines, small process skids, test benches, and material-handling cells. For those owners, the 6ES5482-8MA11​ solves a specific problem: keeping the I/O count up without burning slots, at a time when spare real estate in a 6-slot S5-100U expander is often more constrained than spare budget. The module measures 111 × 139 × 55 mm packaged, weighs ~0.20 kg, and carries IP20 protection — consistent with the rest of the compact-U I/O family profiled in the prior listings.

Technical Specifications

Main Features and Advantages

Slot-economy combo design for compact S5 racks.​The defining value of the 6ES5482-8MA11​ is architectural, not electrical: it puts 8 DI + 8 DO on one S5 slot. In an S5-90U (base rack only) or an S5-100U with a single expansion, every slot matters — a packaging dial with 6 photoeyes, 2 guard contacts, 4 pilot valves, and 4 beacon/stacker outputs would otherwise need a 5431 (8 DI) + a 5451 (8 DO) = two slots. The 6ES5482-8MA11​ does it in one, freeing the second slot for an analog card (e.g. the 6ES5464-8MA21​ from the prior listing) or a second combined I/O if the machine grows. For panel builders who standardized on S5-100U for small-to-mid machines in the 1990s, the 482 family was the default answer to “how do I fit 16–24 I/O points without going to a central S5-115U.”Floating input side with 24 V DC sensor compatibility.​Each of the eight DI channels on the 6ES5482-8MA11​ is floating (galvanically separated within the input group), so ground-potential differences between a remote sensor (e.g. a limit switch on a moving carriage) and the S5-100U rack don’t inject offset or noise into the logic read. The ~6 mA “1”-state current at 24 V DC matches the rest of the S5 24 V DC DI family, meaning the same 3-wire PNP proximity sensors, guard-door Safety contacts, and stack-light “run”/”fault” dry contacts that feed a 6ES5431-8MA11​ also feed the 6ES5482-8MA11​ without reediting the sensor loop. This families-consistency matters during spare substitutions: a maintenance tech can swap a failed 5431 for a 6ES5482-8MA11​ (if DI count permits) and land the same 20-pole front connector wiring.0.5 A sourcing DO with 2 A group budgeting.​The eight DO channels on the 6ES5482-8MA11​ are 24 V DC sourcing (PNP-style, 0.5 A each), arranged internally so that the collective group current does not exceed 2 A — a budgeting rule the module enforces via its overload protection. In practice this means the 6ES5482-8MA11​ comfortably drives small-intermediate loads: 24 V DC relay coils (typical 15–30 mA), LED tower beacons (50–150 mA), pneumatic solenoid pilot valves (200–400 mA), and contactor pilot coils (often 300–600 mA — check the coil draw, if it’s 0.5 A exactly you’re at the per-channel limit, better use an interposing relay). What the 6ES5482-8MA11​ does not do is switch 115/230 V AC loads — that’s the 6ES5456-7LA11​ territory from the earlier listing. Keeping the 6ES5482-8MA11​ on 24 V DC loads preserves the 0.5 A/ch margin.Unified front-panel diagnostics.​Because DI and DO share one fascia, the 6ES5482-8MA11​ front carries two rows of green/yellow LEDs (DI side + DO side) letting a tech confirm, in one glance without a PG710, whether “the sensor sees the part” (DI LED lit) and “the valve pilot is being driven” (DO LED lit). On split-card layouts the tech walks two slots over to compare; on the 6ES5482-8MA11​ the cause–effect pair is on the same faceplate, which shortens “why didn’t the cylinder extend” diagnostics from 10 minutes to 2 — the guard-contact is made (DI 3 lit), the S5 logic turned on the output (DO 3 lit), so the fault is downstream in the pilot air or the solenoid, not in the PLC. Small UX detail, large MTTR impact on third shift.ET 200U remote-I/O capable.​Beyond the local S5-90U/100U rack, the 6ES5482-8MA11​ also mounts in ET 100U and ET 200U distributed drops behind an IM 318 / IM 338 interface. For plants that kept a central S5-115U but pushed I/O out to machine skids, the 6ES5482-8MA11​ is a common find in those remote stations — 8 DI + 8 DO is a natural fit for a small skid (tank + agitator + 2 valves + 4 alarms) without over-provisioning slots on the IM interface. The floating DI side is especially useful in ET 200U drops because the skid frame ground often differs from the MCC-room S5-115U rack ground, and the 6ES5482-8MA11​ input isolation absorbs that without diagnostic errors.