The 6ES7405-0DA02-0AA0 is a power supply module (PS 405) for the Siemens SIMATIC S7-400 series. capable of converting input voltages of 24/48/60V DC into the system-required 5V DC and 24V DC power supplies. It delivers maximum output currents of 4A (5V DC) and 0.5A (24V DC), with typical power dissipation of approximately 16W and typical active power consumption of approximately 48W⁴. Designed for industrial automation environments, this module features a power failure/disconnection bridging time (20ms)⁴ and supports an optional buffer battery (AA lithium battery, 3.6V/2.3Ah) to maintain system operation during brief power interruptions.

How to install on the PURIFIER EXPANDER: MODULE POWER SUPPLY SIMATIC S7-400 6ES7405-0DA02-0AA0

Safe power disconnection: Ensure power supply to the PURIFIER EXPANDER system and all associated equipment is disconnected.

1. Module installation:

Carefully insert the 6ES7405-0DA02-0AA0 module into the designated power slot on the rack along the guide rail, ensuring its rear connector makes secure contact with the backplane bus.

2. Power Connection:

Use 3x1.5 mm² specification wiring (solid wire or stranded wire with ferrules on ends, outer diameter 3mm to 9mm).

Connect the DC power leads correctly to the module's input terminals (L+, M) according to the label or manual, observing polarity.

3. Power-up Testing:

Without energising the main system, individually verify that the power input voltage falls within the permissible range and exhibits correct polarity.

Apply power and observe whether the module's status indicator (if present) displays normally.

Employ a multimeter to measure whether the 5V and 24V outputs on the backplane bus are normal and stable.

4. System Startup and Diagnostics:

After confirming normal power outputs, power up the entire system.

Access the hardware diagnostics via the PLC programming software (e.g., STEP 7) to verify all modules are correctly identified and free from fault alarms.

To enhance the functionality of the PURIFIER EXPANDER,

consider pairing it with digital input/output modules: for connecting switches, buttons, sensors (inputs) and indicator lights, relays, valves (outputs).

For example, the 6ES7421-1BL01-0AA0 (32-point digital input module). Such modules typically feature LED status indicators for easier diagnostics.

Alternatively, integrate communication expansion modules: these extend the system's communication interfaces to connect distributed I/O, HMIs, host computers, or third-party equipment, enhancing system integration capabilities.

For example: the EXM448-2 communication expansion module (supporting multiple mainstream industrial communication protocols including PROFIBUS-DP, PROFINET IO, and Ethernet/IP).

Several UAE clients have successfully implemented this module within their PURIFIER systems, reporting significantly enhanced operational efficiency following its integration.

Please note: Should you lack familiarity with the procedure, consult a qualified electrical engineer. Non-professionals must refrain from attempting installation to prevent potential damage.