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Siemens: SITOP PSU8400 – Power Supply with IO-Link

May 23, 2025 - Siemens_ SITOP PSU8400 - Power Supply with IO-Link

May 23, 2025

SITOP PSU8400: Highly Reliable Power & Efficiency

With SITOP PSU8400, you benefit from a highly reliable power supply with IO-Link that puts its value on display – right at the device display and remotely via IO-Link. SITOP PSU8400 has more to offer than conventional power supply units, including more convenience when parameterizing, monitoring, and diagnosing, high power reserves, a small footprint, and an efficiency level of up to 96%.

The Power Supply with IO-Link That Puts Its Value on Display

Siemens_-SITOP-PSU8400-Power-Supply-with-IO-Link

The SITOP PSU8400 communication-capable power supply can be conveniently parameterized and monitored remotely via the integrated IO-Link interface. However, parameterization and diagnostics can also be performed on-site right at the device on the display. SITOP PSU8400 can also be easily expanded using the SITOP buffer, redundancy, and selectivity modules – for maximum reliability and availability.

With the new SITOP SEL1600 selectivity system, also with IO-Link and in the same design, the innovative power supply can be expanded particularly easily and thus offers additional possibilities.

Features

  • Efficiency level up to 96%
  • IO-Link interface with bidirectional communication; power supply unit can also be used without IO-Link
  • Display with four-digit LED indicator (alphanumeric) and three function keys for menu navigation, and for parameterization and diagnostics right at the device with no tools required
  • Three LED indicators for device status, fault states, and communication status
  • Power Reserves (120% up to 45° Celsius)
  • Extra Power (150% for 5 s/min)
  • Power Boost (300% for 25 ms/min)
  • Compact Design (WxHxD): 20 A: 59x145x125 mm; 40 A: 99x145x125 mm

Parameterization, Monitoring & Diagnostics via IO-Link

  • Parameterize & transmit device configuration to SITOP PSU8400 via IO-Link master
  • Plug & Play device replacement
  • Quick & easy parameterization of series machines
  • Export data from SITOP PSU8400 and transfer to the field level
  • Diagnostics via an integrated signaling system
  • Remote switching (on/off) of output

Application Areas in the Spotlight

Automotive & Machine Building

  • Expandable to all-round protection
  • Reduced downtime thanks to power supply diagnostics and monitoring via IO-Link
  • Time-saving commissioning and replacement in the event of an error, thanks to parameterization via IO-Link master

Intralogistics

  • Power reserves in the event of overload (120% up to 45° Celsius) and via selectable extra power
  • Small footprint in the control cabinet, thanks to a compact design and no lateral clearances
  • Product configuration and diagnostics on-site on the device, with no tools required

Food & Beverage Industry

  • Reliable operation in unstable supply systems
  • Reliable 2-phase operation in the event of an error
  • Fast maintenance thanks to power supply diagnostics and monitoring via the device display
  • Energy savings and low heat loss, thanks to high efficiency level up to 96%

Product Highlights Worth Exploring

SITOP PSU8400’s extreme ruggedness not only ensures stable operation in harsh environments, it also enables a reliable power supply in unstable supply systems. In the event of an error, even 2-phase operation is permitted. A number of power reserves also guarantee a high overload capability.

Easy Integration

SITOP PSU8400 can be easily integrated into machine or plant automation via IO-Link:

  • Can be easily integrated into the IO-Link network (field level)
  • Standardized IO technology for reading and writing – with noise-immune, point-to-point transmission (high EMC)
  • COM3, fastest IO-Link transmission at 230.4 kBit/s
  • Parameterization via IO-Link, fast device replacement via plug & play in the event of an error

Convenient Operation

SITOP PSU8400 is extremely user-friendly, both on-site at the device and remotely via IO-Link:

  • Easy configuration and parameterization on the device display or via IO-Link with no engineering framework
  • Convenient monitoring on the device display and faceplates in the HMI/SCADA system
  • Convenient diagnostics via the device display and IO-Link
  • Remote access via IO-Link

High Efficiency

With SITOP PSU8400, you benefit from high efficiency all the way to its highly efficient design:

  • Less heat loss in the control cabinet and lower energy costs, thanks to an efficiency rate up to 96%
  • Small footprint in the control cabinet, thanks to its narrow width of just 99 mm
  • No lateral clearances required on the DIN rail
May 23, 2025 - Siemens_ SITOP PSU8400 - Power Supply with IO-Link 1

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