Harrington Hoists Saw EAC900 User's Manual
Contents
1. Glossary of Common Crane Terms Adjustable brakes Electro mechanical device to control horizontal crane deceleration Bridge beam Traveling beam connected to end trucks supports trolley hoist and load Bumpers Energy absorbing device mounted on end trucks or trolley that reduces impact when the truck or trolley contacts either its end stop or another truck or trolley Capacity Maximum rated load which a crane is designed to carry Commonly expressed in Tons 1 Ton 2 000 Ibs Drop stops Means to limit the drop of a bridge or trolley in case of wheel or axle failure Electronic Acceleration Control EAC Electronic control for adjusting rate of crane acceleration also known as Electronic Soft Start End truck Load bearing crane component that supports the bridge beam and consists of a frame wheels axles etc Festooning Wiring and support system that delivers power to trolley hoist across bridge or runway beam Compliance Rail sweeps Device designed to clear obstructions from wheel running surface Runway beam Stationary beams that support crane and load Commonly fabricated from S or W beams or patented track Runway electrification Delivers power to crane as it travels along runway Span Dimension from one runway centerline to the other runway centerline System max wheel load Maximum load exerted on runway beams for a crane loaded to its rated capacity It occurs when trolley hoist2. Brake assembly is easy to adjust and is controlled by an independent DC circuit for compatibility with standard EAC or Variable Frequency drive control Brake Coil a Induction hardened set steel gears Adjusting Bolt provide synchronous power to paired drive wheels Stationary axles welded to end truck frame for ruggedness Bridge Beam Selection Charts SERIES 3 SINGLE GIRDER BEAM SIZES Bridge beam sizing is based on Harrington chain hoist products weights and speeds At Capacity Tons Span ft 1 2 1 2 3 5 8 10 10 S8x18 4 S8x18 4 10x25 4 12x31 8 12x40 8 wigx71 W21x93 15 S8x18 4 S8x18 4 10x25 4 12x40 8 15x50 W21x83 W18x106 20 8x18 4 10x25 4 12x31 8 15x42 9 oe W21x93 W18x119 sows ome Say sees ames T van Mee 30 10x25 4 12x31 8 15x42 9 eee W16x77 W24x103 W27x129 35 12x31 8 15x42 9 as W16x67 W21x83 W27x114 W30x148 40 15x42 9 Tee wigx60 wisx71 W21x83 asa nea 45 a W16x57 W18x71 W18x76 W24x94 eee Hhh 50 W16x40 W18x60 W18x76 W21x83 W27x102 ANA A 55 W16x57 W16x67 W21x83 w24x94 W27x114 teas A ae 60 W16x67 W18x76 W21x93 W27x114 beiti base eae Note Above caps are span less 10 0 for overall length Consult Customer Service for wire rope hoist beam sizes HPC RECOMMENDED BRIDGE BEAMS ELECTRIC HOIST Bridge beam sizing is based on Harrington products weights and speeds 1 Includes 15 allowance f
3. fusing for bridge auto reset thermal overload relay and bottom hinged door These panels can be used for dual and multiple speed applications infinitely variable speed applications and programmed acceleration deceleration control VFD comes pre loaded with many easy to select programs to fit virtually any crane control application and includes fault code troubleshooting Electrical Rating Total System Amps Drive Amps Power Supply Series 2 2000 Series Enclosure Rating 1 NEMA 1 43 25 max 4 max 460V 3 60 44 45 max 12 5 max 460V 3 60 23 25 max 8 6 max 208 230V 3 60 4 NEMA 4 24 75 max 24 max 208 230V 3 60 Product Code Motor and Brake Harrington motorized cranes are dual drive type employing two totally enclosed non ventilated drives per crane Drives use helical and spur gearing and are equipped with adjustable DC brakes Rugged helical and spur gears provide reliable and quiet operation Brake Disk Sealed and shielded motor bearings are lubed for life Rectifier for brake circuit supplies DC voltage to brake coil HARRINGTON COMPLETE CRANES Series 3 Underhung Crane Drive Wheels Harrington s motorized and geared underhung cranes use a gear system that drives two of the four wheels on each end truck All Series 3 underhung cranes have two bearings in each wheel Two deep groove ball bearings per wheel for smooth Operation and long life
4. Load is usually between 1 3 and 2 3 of rated capacity and is frequently equal to rated capacity and design service life is 20 000 to 100 000 cycles e Load is usually 1 3 of rated capacity and is rarely equal to rated capacity and design service life is 100 000 to 500 000 cycles e Load is usually very light and rarely is equal to rated capacity and design service life is 500 000 to 2 000 000 cycles Class B Service Class The load cycle and magnitude combinations that define the Class B Service Class are e Load is usually 1 3 of rated capacity and is rarely equal to rated capacity and design service life is 20 000 to 100 000 cycles e Load is usually very light and rarely is equal to rated capacity and design service life is 200 000 to 500 000 cycles All motorized bridge cranes require a master panel to control bridge crane functions Harrington control panels are completely pre wired and tested and ready to mount on bridge beam Standard panel is NEMA 1 rated and includes Through the door fused Main line contactor Reversing contactor Thermal overload relay disconnect switch allows the crane to be turned provides bridge crane auto reset protects crane is OSHA compliant lock out capable on and off from the pendant forward and reverse control drives from overheating Control transformer Fusing for crane drives Electric Acceleration Control EAC with primary and secondary protect motors and are NEC compliant allows e
5. asy field adjustment of crane fusing provides low voltage acceleration and helps minimize load swing control circuit for pendant NEMA 4 bridge crane control panels available upon request HARRINGTON COMPLETE CRANES Bridge Crane Control Panels These panels are for use with all Harrington Series 3 motorized end trucks and are NEC compliant for overhead bridge cranes All panels include bridge mounting bracket and wiring diagram Specify voltage when ordering Standard Panel Single Speed and Dual Speed Models with EAC 700 800 900 Series Standard features include Lock out compatible through the door manual disconnect switch with system fusing 110 volt control circuit transformer with primary 7 24 MAX and secondary fusing mainline 8 48 max contactor mechanically interlocked 9 80 max reversing contactor time and torque adjustable Electronic Acceleration Control EAC branch Enclosure Rating circuit fusing for bridge auto reset 1 NEMA 1 thermal overload relay and bottom 4 NEMA 4 x hinged door 9 Product Code Total System Amps Speed Blank Single Speed D Dual Speed Optional Panel Variable Frequency Drive Models 2000 Series Standard features include Lock out compatible through the door manual disconnect switch with system fusing 110 volt control circuit transformer with primary and secondary fusing mainline contactor Variable Frequency Drive VFD brake relay branch circuit
6. is located at its maximum end approach and includes an allowance for vertical inertial forces associated with electric hoists This value is expressed for Series 3 cranes as lbs wheel for top running and lbs wheel pair for underhung cranes For Series HPC 500 cranes both top running and underhung are lbs wheel pair Top running Crane type that travels on top of rail or bar attached to runway beams Underhung Crane type that travels on the lower flange of runway beams In order to meet requirements of the Crane Manufacturers Association of America CMAA the National Electric Code NEC and the American National Standards Institute ANSI ASME Harrington cranes include e Thermal protection for all motors e Stationary crane wires that are enclosed in conduit e Rubber bumpers for crane and powered trolleys e Hoists load tested to 125 of rated capacity Drop stops for cranes e Rail sweeps for top running and underhung cranes HARRINGTON COMPLETE CRANES Crane Service Classifications Crane Service Class e The Crane Manufacturers Association of America CMAA has established six service classes for cranes These classes are Class A through Class F and are based on load cycles and load magnitude Class A cranes are suited for the least severe service and Class F cranes are suited for the most severe service Class C Service Class The load cycle and magnitude combinations that define the Class C Service Class are e
7. or Electric Hoist load factor 2 Based on Harrington s electric chain hoist product 3 For spans greater than 10 ft braces between end truck and bridge beam are recommended Maximum Allowable Span ft Capacity Tons 10 15 20 24 1 2 8x18 4 8x18 4 8x18 4 10x25 4 1 8x18 4 8x18 4 10x25 4 10x25 4 12x31 8 2 10x25 4 10x25 4 12x31 8 C8x11 5 HARRINGTON COMPLETE CRANES Product Specification Form Harrington Complete Crane Systems HARRINGTON COMPLETE CRANE SYSTEMS Quantity Capacity Ton Span as Voltage If Motorized Runway Length Crane Type Single Girder Double Girder Top Running Underhung Structure Rail Size If Top Running Runway Beam Size If Underhung Bridge Travel Motorized Push Geared If Motorized Single Speed Dual Speed VFD Desired Speed If Geared Hand Chain Drop feet Specials Bridge Beam Required Existing Beam Spec If Existing Hoist Type Manual Chain Electric Chain Electric Wire Rope Lift Feet If Electric Single Speed Dual Speed VFD Desired Speed Options Canvas Chain Container Specials Trolley Type Motorized Push Geared If Motorized Single Speed Dual Speed VFD Desired Speed If Geared Hand Chain Drop feet Specials Form completed by Name Company Phone Fax Address City State Zip E Mail Address Copy amp fax to 717 665 7432 Options Flat Cable Festooning e Roving
8. pendant e Hoist trolley power e Runway crane power Variable Frequency Control e Multiple speeds e Infinitely variable speeds e Programmable acceleration and deceleration Remote Control e Radio e Infrared e Wall mounted pendant hard wired 24V Control Voltage 110V is standard NEMA 4 4X 12 or 13 Bridge Control Box NEMA 1 is standard NEMA 4 or 4X Pendant Warning Devices e Lights e Audible alarms Enclosed Conductor Electrification e Bridge e Runway Multiple Hoists on Single Bridge Power Supply Other Voltages Available Interlocking Bridges Patented Track Runway Applications 3 1 4 and above Travel Limit Switches Load Limiting Device Special Applications
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