S20-DIDO-8/1 Bosch Rexroth Indramat
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MPN: R911173745
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The Bosch Rexroth Indramat S20-DIDO-8/1 is a module from the S20 IndraControl Modules series with a nominal voltage of 24 V DC and a contact capacity of 8 Amps. It uses a push-in connection method and is designed for mounting on a grounded DIN rail. The module features IP20 degree of protection and an isolation rating of 500 V AC at 50 Hz for 1 minute.
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Product Description:
The S20-DIDO-8/1 digital input/output module is manufactured by Bosch Rexroth Indramat and belongs to the S20 IndraControl Modules series. It provides eight channels of 24-volt switching for field sensors and actuators and routes those signals to the S20 local bus. Within an automated line, the module acts as a distributed point for reading limit switches and driving solenoid coils, allowing the higher-level PLC to supervise machine sequences without extensive parallel wiring.
Each channel operates from a nominal control supply of 24 V DC, a standard level for industrial electronics that minimizes shock hazards while providing resistance to electrical noise. The module can sink or source up to 8 A in total, so grouped loads such as indicator lamps or pneumatic valves can be powered directly without external relays. Its housing carries a protection rating of IP20, which is suitable for cabinet installation where conductors are protected against accidental contact while ventilation remains available. Communication with adjacent S20 stations is handled by the local backplane at 100 Mbps, supporting rapid updates of process images even when multiple modules share the segment. The internal power rail tolerates line fluctuations of ±5 %, maintaining logic thresholds without false transitions during load changes.
Galvanic separation between the channel electronics and field side withstands test potentials of 500 V AC at 50 Hz for one minute, providing protection against miswiring or ground loops. Field conductors are secured by tool-free push-in terminals, enabling fast installation and ensuring stable contact under vibration. The enclosure snaps onto a grounded DIN rail, which establishes the protective earth reference required for electromagnetic compatibility. Power for the input and output circuits is drawn through the common bus bar marked UIO, simplifying distribution because additional jumpers are not required between neighboring S20 modules.
