Siemens 6ES5130-3KB52 Central Controller

This central controller executes logic for SIMATIC S5 automation racks. It manages both bit and word processing tasks efficiently. You can expand this unit with up to 16 I/O modules.

Technical Specifications

Parameter	Details
Brand	Siemens
Model	Siemens 6ES5130-3KB52
Category	Central Controller (SIMATIC S5 Series)
Dimensions (H x W x D)	250 mm x 85 mm x 210 mm
Weight	1.55 kg
Processor Type	16-bit microcontroller
Program Memory	24 KB RAM (battery-backed)
Load Memory	24 KB EPROM or EEPROM
Data Memory	2 KB internal flags and registers
Processing Speed	2 ms per 1K of bit logic
Number of Internal Components	1 CPU + 2 memory modules + 1 watchdog timer
Interface Type	Backplane bus + 1x TTY programming port
Built-in I/O	None (requires external S5 cards)
Power Supply	5 V DC from backplane only
Current Draw (5V)	650 mA typical
Built-in Energy Storage	2200 µF capacitor + lithium battery socket
Battery Type	3.6 V lithium (not included)
Data Retention (with battery)	Approximately 50 days
Watchdog Timer	Yes (programmable from 10 to 500 ms)
Status Indicators	5 LEDs (RUN, STOP, BATT, BUS, WDOG)
Operating Temperature	0°C to 60°C

Detailed Feature Overview

This central unit provides 24 KB of user program storage space. It processes 1K of bit logic in just 2 milliseconds. Consequently, it handles medium-sized control applications comfortably.

A 2200 µF capacitor buffers the memory during short power dips. With an optional lithium battery, data retention reaches about 50 days. The programmable watchdog timer resets the CPU if the software hangs.

You will find a TTY programming port on the front panel. This port connects to a programmer or PC via a suitable adapter. The backplane bus communicates with up to 16 S5 I/O modules directly.

Installation and Compatibility

Siemens 6ES5130-3KB52 occupies the first slot of an S5 rack. Use STEP 5 software to write and upload your control programs. Insert the memory submodule before applying backplane power.