130B9081 Danfoss
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The Danfoss 130B9081 is part of the Danfoss Cables and Accessories series. This accessory features an external contact rating of 24 VDC at 2 Amps and supports fire mode input through X55-7 and X55-8 terminals. It offers an all-switch delay of 15 seconds and an auto bypass delay ranging from 30 to 300 seconds.
Internal Product Review
The 130B9081 from the Danfoss Cables and Accessories series is a reliable accessory well suited for integrating remote start and fire mode control, utilizing dedicated terminals for streamlined wiring. With an external contact rating of 24 VDC 2 A and a configurable auto bypass delay range between 30 and 300 seconds, this component enhances system flexibility. Overall, its terminal options and delay adjustments make it a strong choice for versatile control applications.
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Product Description:
The 130B9081 module is a control accessory supplied by Danfoss within the Danfoss Cables and Accessories series. It interfaces field wiring with VLT and FC drive systems, providing timed bypass, safety interlocks, and remote input consolidation for HVAC and process automation panels. By centralizing delay logic and contact routing, the accessory simplifies integration of smoke control, permissive start, and emergency stop functions into the frequency converter.
Its timing logic manages multiple delay parameters. The all-switch function imposes a maximum energizing interval of 15 s, ensuring that connected contactors do not close simultaneously. For bypass operation, the circuit can wait up to 300 s or as short as 30 s before transferring the load, permitting fan coast-down or pressure equalization. Field devices that share the accessory’s digital bus may draw control power through the external contact pair, which is rated at 24 VDC 2 A. Drive status alarms exit on the dedicated fault relay at terminals X56-7/8/9, while fire-mode enable commands enter through terminals X55-7/8 so that local code requirements for smoke purge can be met without additional relays.
The remaining inputs complete the start-permission chain for standard operation. Automatic run requests are accepted on the remote start link at X55-3/4, giving the building management controller a direct path to energize the drive after the programmable delays expire. System interlock feedback is monitored through the run permissive pair at X55-1/2, and the accessory inhibits output if these contacts open. For immediate shutdown, safety circuits tie into terminals X55-5/6, which interrupt the enable line independently of any timing functions. These terminal groups keep critical safety, fire, and routine control paths separate without overlapping signals or exceeding the accessory’s current limits.
