Product Overview

The 6ES5470-7LA12​ is an 8-channel floating (galvanically isolated) analog output module within Siemens’ SIMATIC S5-470 family, engineered for the S5-115U, S5-135U, and S5-155U central racks as well as the fail-safe S5-115F variant. Where S5 digital output modules switch contactor coils and beacon stacks, the 6ES5470-7LA12​ carries the precision side of the rack: converting S5 CPU-calculated digital words into continuous ±10 V voltage signals or 0–20 mA current loops that drive positioner valves, VFD speed-setpoints, strip-chart recorder pens, load-cell excitations, and other process actuators that demand stable analog command references. Each of the eight outputs on the 6ES5470-7LA12​ is software-configurable per channel for voltage or current mode, with the hardware range selected via a module-side DIP / coding comb (±10 V or 0–20 mA), giving panel designers the flexibility to mix, for example, four VFD speed refs (±10 V) and four positioner loops (0–20 mA) on a single card without external isolators.Positioned as the “dual-range” member of the 470 compact-floating trio — alongside the -7LB12 (±10 V only) and -7LC12 (1–5 V / 4–20 mA only) — the 6ES5470-7LA12​ is the highest-utility SKU in the subfamily because it covers both voltage and current actuator worlds. Resolution is 12 bits plus sign (two’s complement, left-justified in the S5 process image), giving 4096 distinct steps across the ±10 V or 0–20 mA span — sufficient for most 1990s-vintage positioner and VFD front-ends that expect 0–27648 S5 scaling anyway. The module is a floating-design card with VDE 0160 insulation between output group and backplane, and each channel is short-circuit protected on the voltage side and wire-break detectable on the current side — diagnostic LEDs on the front flag overrange and fault conditions without a PG710 session. Siemens placed the 6ES5470-7LA12​ on PLM PM500 status effective October 1, 2010, with the designated successor 6ES5470-7LA13​ carrying the same electrical specification as a spare-part continuation; neither is in active new-design manufacture, cementing the 6ES5470-7LA12​ as a continuity-engineering spare for S5-115U/F racks that still govern process lines, batch skids, and utility MCCs worldwide.Physically the 6ES5470-7LA12​ occupies a single S5 central/expansion rack slot and terminates to a 48-pole front connector (e.g. 6ES5490-8FB11 or equivalent), drawing from the S5 rack’s 5 V backplane for logic and requiring a 24 V DC load-side supply for the output stage. Net weight is approximately 0.9 kg — denser than the compact S5-100U I/O cards from the prior listings, reflecting the eight isolated output channels and the D/A drive stages packed into the S5-115U-form-factor housing. For plants still running S5-115U as a central process controller, the 6ES5470-7LA12​ is typically one of the two or three AO cards in the rack, paired with 5464-series AI for the sensing side and 5456-series AC DO for starter coils — a triad that defined mid-tier process automation from the late 1980s through the 2000s.

Technical Specifications