Siemens 6ES5395-0UA21 Operator Interface

This Siemens operator interface provides a reliable visual link between personnel and automation systems. The Siemens 6ES5395-0UA21 displays process data clearly on its alphanumeric screen. Its membrane keypad enables quick parameter entry and function selection. This device integrates seamlessly with SIMATIC S5 programmable controllers. The Siemens 6ES5395-0UA21 supports both monitoring and control tasks effectively.

Display and Physical Specifications

The device features an 8-character alphanumeric LED display for status information. Each character measures 7 mm in height for easy readability. Its overall dimensions reach 162 mm in width and 80 mm in height. The depth measures 45 mm behind the mounting surface. This unit weighs approximately 0.35 kilograms for panel mounting. The Siemens 6ES5395-0UA21 includes 16 tactile keys for data entry. Four function keys allow direct access to frequently used operations. A key lock prevents unauthorized parameter modifications.

Electrical Characteristics and Interface Options

The device draws a nominal current of 80 mA from a 24 V DC supply. Peak inrush current reaches 1 A for approximately 30 milliseconds. The unit consumes about 2 W of power during normal operation. A 9-pin D-sub connector provides the RS-232 communication interface. This interface supports baud rates from 1200 to 9600 bit/s. The Siemens 6ES5395-0UA21 includes a 16 KB internal memory for configuration storage. An energy storage capacitor of 100 µF maintains settings during brief outages.

Environmental Ratings and Mounting Details

Operating temperatures range from 0°C to 45°C for consistent performance. Storage temperatures extend from -20°C to 60°C without damage. Relative humidity tolerance reaches 80% with no condensation formation. The front panel meets IP54 protection against dust and splashing water. Mount this device using the supplied clips for a secure fit. The Siemens 6ES5395-0UA21 suits both machine-mounted and desk-mounted installations.

Detailed Specification Table

Parameter	Specification
Display Type	8-character alphanumeric LED
Character Height	7 mm
Dimensions (W x H x D)	162 mm x 80 mm x 45 mm
Weight	Approx. 0.35 kg
Number of Keys	16 (membrane), 4 function keys
Supply Voltage	24 V DC
Current Consumption	80 mA (nominal)
Power Consumption	2 W
Communication Port	RS-232 (9-pin D-sub)
Baud Rate Range	1200 to 9600 bit/s
Internal Memory	16 KB
Energy Storage Capacitance	100 µF
Operating Temperature	0°C to 45°C
Front Panel Protection	IP54

Application and Installation Guidelines

Install this device in a clean location with adequate front access. Cut a 140 mm x 60 mm opening in the control panel. Insert the unit from the front and secure it using the provided brackets. Connect the RS-232 cable to the programming port before applying power. The Siemens 6ES5395-0UA21 supports configuration via the STEP 5 software package. Use the function keys for navigating menus and confirming entries. Clean the membrane surface with a soft, dry cloth regularly. Verify the communication settings match the connected PLC configuration.