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Technical Overview
The Siemens 6ES5436-7LB11 digital input module belongs to the SIMATIC S5 programmable logic controller family. This module captures 24 V DC discrete signals from field devices such as pushbuttons, limit switches, and proximity sensors. It provides 16 isolated input channels within a single slot, and optical isolation separates the field inputs from the system backplane. Furthermore, this module processes status changes with a fast response time, thereby ensuring reliable control applications.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 6ES5436-7LB11 |
| Product Type | Digital Input Module |
| Compatible System | SIMATIC S5 |
| Number of Inputs | 16 isolated digital inputs |
| Rated Input Voltage | 24 V DC |
| ON-State Voltage | 13.0 V DC to 30.0 V DC |
| OFF-State Voltage | ≤ 5.0 V DC |
| Input Current per Channel | 7.0 mA typical at 24 V DC |
| Response Time | ≤ 2.5 ms (filtered) |
| Isolation | 500 V AC between field inputs and system |
| Indicators | LED status display per channel |
| Power Supply | 5 V DC from S5 backplane |
| Current Consumption (5V) | 100 mA typical |
| Dimensions | 1 slot width (25 mm) × 233 mm × 150 mm |
| Weight | Approximately 0.8 kg |
| Operating Temperature | 0°C to 60°C |
Performance and Application Benefits
The 6ES5436-7LB11 provides 16 digital input channels for monitoring field device status in S5 automation systems. Moreover, the module’s optical isolation protects the CPU from electrical noise and voltage surges on field wiring. In addition, the built-in filtering eliminates contact bounce from mechanical switches, thereby preventing false triggers. Consequently, the fast 2.5 ms response time enables reliable detection of rapid events and short-duration pulses. Therefore, this module is well-suited for applications requiring dependable monitoring of contact states, including conveyor control, packaging machinery, and material handling systems.