WhatsApp:+86 18150087953 WeChat: +86 18150087953 
Email：
Description
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 6ES5430-7LA12 |
| Manufacturer | Siemens |
| Product Type | Digital Input Module (Floating, Isolated) |
| Number of Inputs | 32 channels (grouped 8+8+8+8) |
| Rated Input Voltage | 24 V DC |
| Logic “0” Range | –30 V to +5 V DC |
| Logic “1” Range | 13 V to 30 V DC |
| Input Current (“1”) | Typ. 8.5 mA |
| Input Delay “0”→”1″ | Typ. 2.2 ms / Max. 4.6 ms |
| Input Delay “1”→”0″ | Typ. 4.5 ms / Max. 12 ms |
| Galvanic Isolation | Yes, optocoupler, group-wise (30 V rated, tested 500 V per VDE 0160) |
| Backplane Bus Current (5 V) | 5 mA |
| Power Loss (Module) | Approx. 6.5 W |
| Compatible PLC | SIMATIC S5-115U / S5-115H / S5-115F |
| Shielded Cable Length | Up to 1000 m |
| Unshielded Cable Length | Up to 600 m |
| Operating Temperature | 0 °C to +60 °C (some sources –20 °C to +60 °C) |
| Dimensions (L × W × H) | 31.4 × 21.5 × 5.3 cm |
| Weight | Approx. 0.78 kg |
| RoHS | Non-compliant (legacy leaded version) |
| Commodity Code (Siemens) | S20 / 2ET |
Main Features and Advantages
Floating 32-channel density in a single S5 slot. The 6ES5430-7LA12 packs 32 digital inputs into one standard SIMATIC S5 long module, making it one of the highest-density DI options in the S5-115U/F rack. For retrofit projects where rack slots are scarce, this density directly reduces the number of modules, terminal blocks, and cabinet footprint required to digitise a large field device population.Group galvanic isolation via optocouplers. Four independent isolation groups (8 inputs per group) mean that even if one field loop experiences a ground fault or surge, the other three groups and the PLC backplane remain protected. The isolation is rated at 30 V working / 500 V test per VDE 0160, which is well suited to plants where 24 V DC sensor supplies are derived from different power domains or where intrinsic safety barriers sit upstream.Floating input topology for ground-loop elimination. Because the input circuits are floating relative to the S5 frame ground, the 6ES5430-7LA12 can be wired into systems where the 24 V DC field supply has its own reference, or where multiple field supplies coexist. This is a frequent requirement in older European machinery where PNP source-type wiring and local supply commons are not unified.2-wire BERO proximity switch support. Each input can directly drive Siemens 2-wire BERO inductive/capacitive proximity sensors with up to 1.5 mA quiescent current, eliminating the need for interposing relay interfaces on simple presence-detection loops.Long cable capability. With shielded runs up to 1000 m and unshielded up to 600 m, the module comfortably handles distributed I/O topologies common in conveyor systems, crane controls, and yard gantries where field devices sit far from the central S5 cabinet.Front-panel LED per channel. Thirty-two green LEDs mirror the input states in real time. During troubleshooting on a live line, an engineer can confirm whether a “missing” input is a wiring issue, a sensor failure, or a program logic condition without connecting a laptop — a small but heavily valued ergonomic detail in legacy plants that still run S5.Robust S5 mechanicals. Screw-terminal field wiring, gold-plated backplane fingers, and a polycarbonate/ABS housing rated for 0–60 °C ambient make the 6ES5430-7LA12 durable in dusty, vibration-prone environments such as quarry conveyors, foundry cooling beds, and wastewater screening decks.Lifecycle reality and spare-part value. Siemens officially marks the 6ES5430-7LA12 as “End” with no replacement MLFB. In practice, this means the module’s market value lies entirely in the spare/replacement channel. For asset managers running S5-115U/F systems that are not yet economical to migrate to S7-1500, keeping a stock of tested 6ES5430-7LA12 units is a low-cost insurance policy against unplanned downtime.
