High availability of the 24 V DC supply thanks to redundant configuration
Decoupling of two power supplies of the same type in parallel operation via diodes
24 V DC power supply is maintained in the event of a power failure
Compact redundancy modules for power supply units up to 40 A
Diagnostic signal via LED and signaling contacts
Adjustable switching threshold for LED and signaling contacts
Buffer module
SITOP buffer module
Buffering the load current during brief power interruptions
Maintenance-free capacitors with short charging times as energy storage units
Wiring parallel to the output of the power supply
Parallel switching of several buffer modules possible
A supply voltage > 20.5 V is signaled by an LED on the device.
Buffer time up to: 200 ms at 40 A, 400 ms at 20 A, 800 ms at 10 A, 1.6 s at 5 A load current
Selectivity modules
SITOP selectivity modules
Distribution of the load current over up to 4 current circuits with individually adjustable maximum current
Monitoring of individual partial currents
Reliable tripping regardless of cable lengths and cross-sections
Selective cutoff of current circuits at overload or short-circuit
Simple commissioning thanks to manual switch on/off of outputs
Sequential connection delay of feeders reduces total inrush current
Signaling via LEDs (channel-by-channel) and remote diagnostics via common signaling contact or single-channel signaling
Evaluation of the status of 4 current circuits of selectivity modules with single-channel signaling via SIMATIC S7 function blocks. More information as well as function blocks are available for download at: http://support.automation.siemens.com/WW/view/en/61450284
Remote reset possible from a central location
Sealable transparent cover over adjusters for currents and times for protection against maladjustment
