Overview
The SITOP redundancy modules are the optimal extension for all power supplies to ensure additional protection from failure of the control voltage. The redundancy module decouples the feeding power supply units and, in case of failure of one unit, the other one automatically takes over the DC supply. SITOP RED1200 redundancy modules compensate for the missing signal function when power supplies with diagnostic signals are used. If a fault occurs, the signal from the defective power supply remains off. The error message is still generated. The rugged RED1200 add-on modules decouple power supply units with output voltages from 10 to 58Ā V.
Benefits
- High safety of the control voltage due to redundant design
- Power is reliably supplied even when a power supply fails
- Compact redundancy modules for power supplies up to 40 A
- Redundancy module 24 V/NEC Class 2 with limiting to 100 VA
- SITOP PSE202U 24Ā V: Diagnostic message via LED and signaling contacts with adjustable switching thresholds
- SITOP RED1200 12Ā V, 24Ā V, 48Ā V: Compact and high dielectric strength
Design
For redundant design, the redundancy module decouples two SITOP power supplies of the same type from each other in parallel mode via diodes. Depending on the output current of the power supplies, 1 to 2 redundancy modules may be required.
Function
Monitoring by SITOP PSE202U redundancy modules
The PSE202U redundancy module continuously monitors the output voltage of connected power supply units. The switching threshold can be set from 20 to 25 V on the device. If the output voltage of one of the two power supply units sinks to the set value or below, this is signaled by an LED on the device and a changeover contact.
6EP1964-2BA00 Siemens
SITOP PSE202U 10A Redundancy module Input/output: 24 V DC suitable for decoupling two SITOP power supplies with maximal per 5 A output current













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