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Bulldog
Conveyor Belt Misalignment & Rip Detection Switch

The range of Bulldog misalignment and rip detection electro-mechanical switches are designed to detect dangerous misalignment and/or rip on open belt conveyors.

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	Bulldog Specifications :		Literature:
	• Supply - 12-24VDC and 110-240VAC		• Product Datasheet
	• Rating - 5 Amps (must be fused externally)
	• Contact Alarm - 1 Voltage Free Changeover Contact; 6 Amps; 240VAC		Technical:
	(non inductive)		• Bulldog Manual
	• Contact Stop - 1 Voltage Free Changeover Contact; 6 Amps; 240VAC
	(non inductive)		Dimensions:
	• Contact Rip - 1 Voltage Free Contact; NC; 2.1 Amps; 240VAC (non inductive)		• Bulldog
	• Dimensions (H x L x W) - 88mm x 314mm x 116mm		.dwg (AutoCAD) .pdf
	• Cable Entry - 1 x M25
	• Weight - 2.7 lb / 1.2 kg
	• Protection - IP66

	Bulldog Approvals:
	• ATEX
	• IECEx Zone 21





	Part Numbers and Accessories:
	• MBA2AI ~ Mechanical Belt Misalignment Switch
	• MBR2AI ~ Mechanical Belt Rip Switch
	• MBA2RAI-SF ~ Combined Mechanical Belt Misalignment and Belt Rip Switch (with SS Fittings)
	• KIT-BRW ~ Belt Rip Detection Cable
	• WDC4V46C ~ Watchdog Control Unit (120 – 240 VAC / 24VDC)
	• ETH-NODE1V4C ~ IE-NODE 1 (24 VDC)


	Literature:		Dimensions:
	• Product Datasheet		• Bulldog
			.dwg (AutoCAD) .pdf
	Technical:
	• Bulldog Manual

	Note: Product manuals for older part numbers can be
	found under the Technical Support area.



			KIT-BRW The KIT-BRW incudes belt rip wire, 2 steel wire clamps, 2 eyebolts, and 2 magnetic attachments.


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	Can I use the Bulldog to monitor belt alignment on a bucket elevator?
	No. The Bulldog is designed to monitor belt alignment and/or rip on open belt conveyors. Because it requires deflection of the roller to detect misalignment, it is not suitable for bucket elevators or enclosed belt conveyors.

	Will the same model of bulldog monitor both belt alignment and rip or do I have to choose one or the other?
	Bulldogs are available in various configurations including belt rip only, belt alignment only, or both belt rip and alignment. See the manual for the correct part number for your application.

	How many bulldogs are required to monitor my open belt conveyor?
	There will generally be a minimum of four bulldogs required to monitor an open belt conveyor. One pair will be mounted near the head pulley and the second pair will be mounted near the tail pulley. Depending on the length and other attributes of the conveyor, more bulldogs may be needed to fully protect the belt.