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.
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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.
Frequently Asked Questions about 130B9081:
Q: What is the all-switch delay when all outputs are turned on for the 130B9081?
A: The Danfoss 130B9081 has an all-switch delay of 15 seconds when all outputs are activated.
Q: What is the external contact rating for the Danfoss 130B9081 cable accessory?
A: The external contact on the 130B9081 is rated for 24 VDC at 2 amps.
Q: What is the delay range for the auto bypass feature on the 130B9081?
A: The auto bypass delay can be set from a minimum of 30 seconds to a maximum of 300 seconds.
Q: Where do you connect the fire mode input on the Danfoss 130B9081?
A: Fire mode input connections for this model should be made at the X55-7 and X55-8 terminals.
Q: Which terminals are used for the fault relay on the 130B9081 accessory?
A: The fault relay terminals for the 130B9081 are located at positions X56-7, X56-8, and X56-9.
