Abstract: A removable cartridge cleaner assembly is provided that allows for easier replacement of the belt cleaner blades from under a conveyor belt. In one aspect the assembly includes a cartridge assembly configured for connection with at least one belt cleaner blade assembly and a support assembly configured to support the cartridge assembly across a transverse width of the conveyor belt. A releasable connection between the cartridge assembly and the support assembly is configured to be sheltered from dust and debris. The releasable connection may be disposed within a chamber formed by the engaging portions of the cartridge and support assemblies. The releasable connection can be released by removing a longitudinally oriented rod member that extends along a length of the cartridge and support assemblies. The support assembly may include a secondary cartridge support for easing installation and removal of the cartridge assembly.

Abstract: A method for monitoring a belt conveyor with a circulating conveyor belt includes the steps of determining at least one operating parameter of the belt conveyor; determining running resistances at different points along the conveyor belt on the basis of the at least one determined operating parameter; determining a sum of the determined running resistances over the length of the conveyor belt; and adapting the determination of the running resistances, in order to minimize a deviation of the drive power which is calculated from the determined sum from the measured drive power.

Abstract: A carriage transport system, including a transport path formed of a plurality of transporting modules; a plurality of lower-order controllers each configured to conduct drive control of a carriage on a covered transporting module among the plurality of transporting modules; and a higher-order controller configured to control the plurality of lower-order controllers, wherein the plurality of lower-order controllers each receive a drive instruction for the carriage on the transport path from the higher-order controller in advance, and when respectively receiving one-group transport instructions transmitted from the higher-order controller simultaneously at the same timing, the plurality of lower-order controllers each apply the drive instruction to one of the carriage that is present on the covered transporting module and the carriage that is to enter the covered transporting module in an order of entering the covered transporting module, to thereby conduct the drive control of the carriage.

Abstract: A soldering apparatus as a conveyance apparatus includes a substrate loading portion to load a substrate on the soldering apparatus, an intermittent feeding unit to intermittently feed the substrate loaded on the soldering apparatus, a substrate discharge portion to discharge the intermittently fed substrate to the outside of the soldering apparatus and a controller to control conveyance of the substrate. The substrate loading portion includes a first conveyance path to convey the substrate, a first sensor provided in the vicinity of a substrate loading inlet of the substrate loading portion, and a second sensor arranged in a downstream side of the first sensor along the substrate conveyance direction. The intermittent feeding unit includes a second conveyance path for conveying the substrate, and a third sensor placed in the vicinity of an upstream end of the intermittent feeding unit along the substrate conveyance direction.

Abstract: A sheet conveying system includes: an upstream apparatus provided on an upstream side in a conveyance direction of a paper sheet; a downstream apparatus provided on a downstream side of the upstream apparatus; an upstream conveyor that conveys the paper sheet; an upstream driver that drives the upstream conveyor; a downstream conveyor that receives the paper sheet conveyed from the upstream conveyor, and conveys the paper sheet received from the upstream conveyor; a downstream driver that drives the downstream conveyor; an upstream controller that is connected to the upstream and downstream drivers; and a downstream controller that is connected to the downstream and upstream drivers, wherein the sheet conveying system switches control on the basis of sheet information between first control in which the upstream controller controls the upstream and downstream drivers and second control in which the downstream controller controls the downstream and upstream drivers.

Abstract: A laboratory automation system is described, comprising pairs of conveyor belts accommodating devices for conveying biological samples and actuated by a motorized traction device. Said motorized traction device includes a first and a second motor, each adapted to actuate both said pairs of belts a central control unit being adapted to control the simultaneous or alternating actuation of said motors.

Abstract: A system for controlling moving elements including: a zone controller; a first network and a second network; at least one first motor gateway associated with a portion of the conveyor and assigned to the first network; and at least one second motor gateway associated with a different portion of the conveyor and assigned to the second network; wherein the zone controller and the motor gateways are configured to: communicate data to control the moving elements via the first and second networks in a structured manner to compensate for network or processing timing. A method for controlling moving elements including: communicating data related to control of the moving element conveyor, in a structured manner to compensate for network or processing timing, between a zone controller and first and second motor gateways.

Abstract: A system for treating a material includes first and second screw conveyors each having a rotary shaft and a helical flight extending radially outward therefrom, the flighting of the screw conveyors overlapping with each other, and first and second actuators operably coupled to the first and second screw conveyors in a one-to-one dedicated relationship to rotationally drive the screw conveyors independently of each other. In typical embodiments, also included is a system for varying the clocking position of the screw conveyors relative to each other, wherein the screw conveyor flights are axially adjusted with respect to each other between a normal position and an advanced and/or retarded position. Also disclosed are methods of varying the axial position of the screw conveyor flights with respect to each other between the normal and advanced and/or retarded positions.

Abstract: The invention is related to a transport system for sheet material including a conveyor belt charged with a vacuum. The transport system includes a vacuum chamber providing the vacuum to charge the conveyor belt while moving along the vacuum chamber in a transport direction, wherein the conveyor belt is permeable to air by recesses having specified distances from each other, and air nozzles arranged at a deflection position inside the vacuum chamber. The specified distances from each other correlate with the distances of the recesses in the conveyor belt to allow pressurized air charged to the air nozzles to pass through the recesses in the conveyor belt.

Abstract: A drive unit for a roller conveyor assembly having a motor and an integrated motor controller. The controller is mounted on a circuit board and connected to the rear of the motor housing. A cover for the controller substantially encloses the controller. An opening in the cover allows access to a terminal block from the controller. The terminal block receives wiring to external devices and to other zone controllers. Wiring between the circuit board for the controller and the motor is performed as a step in the assembly of the integrated motor and controller. The motor and controller are configured to be mounted below the rollers and between the side frames of a conveyor assembly. An output shaft from the motor is coupled to the rollers to power the conveyor assembly.

Abstract: An extendable boom conveyor system having a first boom element, a controller, an input device, and a second boom element. The controller, using the input device, can adjust the position of the first boom element to maintain a distance relative to a user. A method performed by an extendible conveyor system can include detecting a position of a user using the input device, moving the first boom element to a position relative to the position of the user, detecting a user input using the input device, moving the first boom element to a new position according to the user input, and transporting parcels loaded by the user on the conveying surfaces.

Abstract: A side shifting conveyor is provided for a surface mining operation. The conveyor generally includes conveyor sections and conveyor translation devices. Each conveyor translation device includes a drive operable to move the associated at least one conveyor section in a direction substantially perpendicular to the conveying direction. The conveyor further includes a controller operatively coupled to each drive for controlling operation of the drive and coordinating movement of the conveyor sections. A method for moving a conveyor in a surface mine generally includes sensing that a surface miner operable to deposit material onto the conveyor sections has moved beyond one of the conveyor sections, fixing a position relative to the surface mine of a conveyor translation device associated with one of the conveyor sections, and operating the conveyor translation device to move one of the conveyor sections in a direction substantially perpendicular to the conveying direction.

Abstract: A roll stand assembly for processing a sheet product and having a frame and a plurality of rolls operatively position on the frame so as to define a plurality of nip locations between cooperating pairs of the rolls. The roll axes are substantially parallel with the plurality of rolls operatively positioned on the frame. Two of the rolls are relatively repositionable by guided relative movement therebetween along a first path to vary a gap between the two rolls. The two rolls are relatively repositionable by guided relative movement therebetween along a second path that is different than the first path to vary the gap between the two rolls. A control system is provided through which the two rolls are relatively repositioned by causing guided relative movement between the two rolls in the first and second paths.

Abstract: A conveyor system includes a splicing belt, a supporting member, a driving module, a trigger module, a detecting module. The splicing belt is attached to the first conveyor belt and the second conveyor belt for joining the second conveyor belt to the first conveyor belt. The supporting member supports the first conveyor belt and the second conveyor belt. The driving module drives the first conveyor belt to be moved relative to the supporting member. The trigger module is located between the supporting member and the first conveyor belt, and is triggered when the splicing belt is moved to be contacted with the trigger module. The detecting module records a trigger time when the trigger module is triggered, the trigger time is a material transition time at which the first materials being fed is changed to the second materials.

Abstract: An apparatus (10) for forming a metal container including one or more devices that are electronically coordinated to perform operations of local and/or extensive deformation over metal containers and one or more interface devices (12) wherein the motion among the devices is accomplished in an indirect way through elements adapted to coordinate and synchronize these same devices.

Abstract: Embodiments of the invention relate to a rigging table system that delivers the members from the cutting station to a location behind the workers at the rigging table, transports the members vertically below the surface of the floor on which the workers stand, horizontally transports the members underneath the floor on which the workers stand, and delivers the members vertically above the surface of the floor in front of the workers for assembly on the rigging table. The members are delivered through the use of systems that drop, slide, lift, and extend the members of the truss to the desired locations using automatic sensors or call buttons.

Abstract: A multiplexing gathering device includes a first gatherer for forming first gathered printed products on a first line and a second gatherer for forming second gathered printed products on a second line. A collecting device collects the first and second gathered printed products. A first transporter transports the first gathered products from the first line to the collecting device and a second transporter for transports the second gathered products from the second line to the collecting device. At least one controller for controls the first gatherer and second gatherer so that second gathered products are selectively formed as a function of the formation of first gathered printed products. A method is also provided.

Abstract: The invention relates method for controlling a machine for treating containers (12) as well as for controlling processing and/or treatment stations located downstream from it, wherein the machine has a plurality of turntables (42) that are each driven by a motor and that serve to orient and/or position the containers (12), in which method the motor drives (44) of the turntables (42) are each monitored separately, so that, if an error occurs with one or more of the turntable drives (44), the affected defective turntable drives (44) are deactivated while the machine and/or the stations located downstream continue to be operated.

Abstract: A system for controlling friction forces acting on a mailpiece in a mailpiece insertion module. The system includes, a backstop assembly for arresting the motion of the envelope when disposed in a first positon and permitting conveyance along the feed path when disposed in a second position, an actuator operative to position the backstop assembly into the first and second positions and consuming energy to maintain the backstop assembly in the first position, a sensor for acquirinq data indicative of the magnitude of energy consumed by the actuator; a means for developing a pressure differential across the envelope to urge the envelope into frictional engagement with a plurality of drive belts and for developing friction forces along a mating interface, and a system controller, for varying the magnitude of the pressure differential and the friction forces developed along the mating interface of the envelope.

Abstract: An apparatus for conveying products to a destination has a revolving conveyor chain embodied by entraining elements revolving along a first continuous track and have a certain chain pitch. A revolving conveying device is disposed with grippers arranged at a distance therebetween on the conveying device revolving around a second continuous track. A first zone of the first and second continuous track transfers products from the first continuous track on the conveyor chain to the second continuous track via the grippers. A second zone of the second continuous track delivers products from the grippers at the destination. A third zone of the first and second continuous track returns products not needed at the destination from the grippers on the second continuous track to the conveyor chain on the first continuous track.

Abstract: A system for controlling friction forces acting on a mailpiece in a mailpiece insertion module.

Abstract: A technique is provided for diagnosing deficiencies in a material handling system having a track and a material support member adapted to travel on the track. A diagnostic device travels with the material support member and includes one or more sensors that measure one or more parameters of the material support member. Such parameters may include an amount of force exerted laterally against one or more restraining members or the accelerations of the material support member. The material handling system may include a plurality of slats connected in an endless web that defines a conveying surface upon which articles are transported.

Abstract: The invention provides a device (10) for feeding sample containers (18) with an analysis sample (P) to be treated, to a treating apparatus (12) for treating the analysis sample (P), in particular to a centrifuge. The device comprises a conveyer (26, 27) for conveying at least one sample container (14) or at least one carrier containing a sample container (14), wherein the conveyer (26, 27) is configured for receiving multiple sample containers (14) and/or carriers and forms a circulating endless conveyer track. The device further comprises an input station (18) for handing over a sample container (14) or a carrier to the conveyer (26, 27). The input station (18) is displaced (V1, V2), with respect to the conveyer (26, 27), obliquely to the conveying direction (26b, 27b) Hof the conveyer (26, 27).

Abstract: A device for continuously transporting a dough strand, comprising a conveyor element having a support surface for the dough strand displaceable in the direction of transport, wherein the conveyor element is pivotable substantially transversally to the direction of transport about a swivelling axis disposed on the downstream end region thereof.

Abstract: The disclosure describes zoned conveyor systems with non-time based sequential power-up of different zones using defined current draw and speed threshold values and/or a defined number of motor revolutions of one conveyor zone to determine when to initiate operation of another (typically adjacent) zone.

Abstract: A bulk material handling system comprises a bulk material handling apparatus to convey bulk material, and a bulk material handling accessory that aids in the operation of the bulk material handling apparatus. The bulk material handling accessory comprises a controller having one or more sensors. The controller comprises a processor and a computer readable memory capable of: (i) generating a control signal indicative of an operating condition of the bulk material handling accessory during a cycle of operation of the accessory; (ii) storing in the memory of the controller a limit associated with an operating condition of the accessory; (iii) comparing the control signal to the limit; (iv) generating a signal indicative of an abnormal event associated with the operating condition when the control signal is beyond the limit; and (v) generating a response signal when a number of abnormal event signals generated exceeds a predetermined level of abnormal events.

Abstract: A planar table for accumulating items for conveying equipment, including: two parallel planar inlet and outlet conveyors that are driven in opposite directions so as to longitudinally move the items. The planar conveyors form an item transit area that has a variable receiving surface, and a diverting member for transferring the items, arranged on the inlet conveyor, to the outlet conveyor. The diverting member is shaped as a curved wall arranged on a longitudinally movable carriage. The wall extends substantially over the entire width of the inlet conveyor, between a side chute and a structure arranged between the two conveyors and on which the carriage is attached. There is an area for feeding items onto the outlet conveyor, the feeding area is arranged outside said transit area.

Abstract: An assembly on a cableway or a goods-conveying system for detecting incorrect positioning of a carrying cable on a mount with a channel in which the carrying cable is located. The assembly includes a device for detecting the faulty positioning of the carrying cable. A segment of the mount is movable, and the device for detecting the incorrect positioning of the carrying cable detects movement of the portion of the mount. It is thus possible for incorrect positioning of the carrying cable, which results in this segment being displaced, to be detected in good time, even before the carrying cable in this portion has been completely derailed.

Abstract: A conveyor for shock-sensitive products includes a conveyor member with at least one intermediate storage region adapted to receive a predetermined number of the products placed thereon when the conveyor is a static condition for temporary intermediate storage. A force measuring member determines the weight force of the products in the intermediate storage region. A control member, adapted to increase and decrease the rate of feed of the shock-sensitive products in the conveyor member, processes the weight force detected by the force measuring member as an input parameter, and increases or reduces the rate of feed of the products toward and away from the intermediate storage region as a function of the weight force.

Abstract: A method for transferring an article from a first conveying device to a second conveying device, where at least one conveying device comprises at least one motor, including determining a load of the at least one motor, and adjusting the relative positioning of the first conveying device with respect to the second conveying device depending on the determined load.

Abstract: A material handling system includes a first independent track assembly configured to transport a forward trolley along a first path, and a second independent track assembly configured to transport a trailing trolley along a second path. The second path is substantially parallel to the first path. A carrier is configured to support an article and has a first end pivotably supported by the forward trolley and a second end pivotably supported by the trailing trolley. The material handling system also includes a third independent track assembly configured to transport the forward trolley and the trailing trolley along a third path. Each of the first independent track assembly, the second independent track assembly, and the third independent track assembly includes an independent drive system for independently moving a respective one of the forward trolley and the trailing trolley and a station control system including a microprocessor in communication with the independent drive system.

Abstract: A safety arrangement for use with a piece of equipment. The safety arrangement includes a signal generating unit for generating an optical signal, an elongate element, and a signal detecting unit. The elongate element is disposed along, about, around or through the piece of equipment and is capable of transmitting an optical signal. The signal detecting unit detects an optical signal. The signal generating unit is connected to the signal detecting unit by the elongate element such that the signal detecting unit is in optical communication with the signal detecting unit. The signal detecting unit is arranged to detect a change in the optical signal transmitted by the elongate element as a consequence of movement of the elongate element and, upon detection of the change in the signal, the detecting unit is configured to effect a change in the operation of the piece of equipment.

Abstract: A component of a material flow system for transporting goods has a mechatronics arrangement with transport elements, sensors and actuators for transporting the goods, a control device for controlling the mechatronics arrangement, interfaces to adjacent components and the surroundings, and an internal simulator for determining the future state of the component. The internal simulator co-operates with internal simulators of other components of the material flow system, for determining a prognosis of the future state of the installation of the material flow system. The decentralised internal simulators can be synchronously or asynchronously activated.

Abstract: A belt driving control device that includes a belt, a driving roller transmitting drive force to the belt, a belt phase detecting section detecting a phase of the belt, a correction amount computing section computing a correction amount of a belt travelling velocity corresponding to the detected phase of the belt for cancelling out fluctuation in the belt travelling velocity corresponding to the detected phase of the belt, and a storage section storing the correction amount of the belt travelling velocity corresponding to the detected phase of the belt. The belt driving control device further includes a driving control section retrieving the correction amount of the belt travelling velocity corresponding to the phase of the belt and controlling drive of the driving roller to cancel out the fluctuation in the belt travelling velocity based on the retrieved correction amount of the belt travelling velocity corresponding to the detected phase of the belt.

Abstract: A drive control system for conveyor utilizes a dynamic chain pull calculation program that is integrated with a PLC, which communicates to a plurality of controllers. The controllers in turn automatically adjust their associated drive motors so as to maximize efficiency at moving material on a conveyor system. Sensing devices provide continuous load parameters to a PLC that in turn, processes the data and adjusts the system's operation based upon desired conditions.

Abstract: A side shifting conveyor is provided for a surface mining operation. The conveyor generally includes conveyor sections and conveyor translation devices. Each conveyor translation device includes a drive operable to move the associated at least one conveyor section in a direction substantially perpendicular to the conveying direction. The conveyor further includes a controller operatively coupled to each drive for controlling operation of the drive and coordinating movement of the conveyor sections. A method for moving a conveyor in a surface mine generally includes sensing that a surface miner operable to deposit material onto the conveyor sections has moved beyond one of the conveyor sections, fixing a position relative to the surface mine of a conveyor translation device associated with one of the conveyor sections, and operating the conveyor translation device to move one of the conveyor sections in a direction substantially perpendicular to the conveying direction.

Abstract: A conveying apparatus comprises a first conveyor for conveying products in a first conveying direction, which first conveyor comprises a first supply location, where a first series of products are supplied to the first conveyor via a first supply station, a second conveyor for conveying products in a second conveying direction, which second conveyor comprises a second supply location, where a second series of products are supplied to the second conveyor via a second supply station. The conveying apparatus further comprises a channelling element for channelling at least one product out from the second conveyor, and a channelling conveyor for conveying a channelled-out product from said channelling element.

Abstract: A self-propelled crushing machine is provided which ensures that, even when crushed pieces of an object include a concrete reinforcing steel bar or other like material piece, it is prevented that the concrete reinforcing steel bar will pierce into a conveyor belt. To this end, the crushing machine has a memory for storing a relationship in belt velocities between a conveyor belt and a magnetic separator belt which relationship allows a concrete reinforcing steel bar attracted and adhered to the magnetic separator belt to be taken off of the conveyor belt before the trailing end of the concrete reinforcing steel bar travels past a leading end attraction/adhesion position at which the leading end of the concrete reinforcing steel bar is to be attracted and adhered to the magnetic separator belt.

Abstract: A manufacturing chain includes a plurality of modular manufacturing stations positioned in series. A first position tracking device of a first modular manufacturing station is configured to detect a first position of a carrier being transported along a first article transportation device through the first modular manufacturing station. A control system is in communication with the first position tracking device and is configured to receive a signal indicative of the detected first position. The control system is also configured to issue an operation signal to a second article transportation device of a second modular manufacturing station based, at least in part, on the detected first position.

Abstract: A characterisation system for objects is provided, comprising at least one characterisation device for the objects, a conveyor belt assembly for feeding objects to the at least one characterisation device, which comprises at least one region with a first conveyor belt section and with a second conveyor belt section, wherein the first conveyor belt section and the second conveyor belt section lie parallel and adjacent to one another and can be positioned at an angle of inclination to a horizontal plane to provide a trough-shaped conveyor path with the first conveyor belt section and the second conveyor belt section in a V disposition, and a drive device for the first conveyor belt section and the second conveyor belt section for the adjustment of defined angle positions.

Abstract: A conveyor system and a method for feeding articles of at least two different types to a downstream processing unit are disclosed. The conveyor system comprises an infeed unit for the articles, an arrangement zone downstream from the infeed unit, and a lane zone downstream from the arrangement zone. In the lane zone the articles are transported to the downstream processing unit in an ordered state. The infeed unit comprises at least two conveyor belts, to each of which there corresponds a direction of transport for the articles in a section of the arrangement zone, wherein the directions of transport enclose an angle between them.

Abstract: The invention relates method for controlling a machine for treating containers (12) as well as for controlling processing and/or treatment stations located downstream from it, wherein the machine has a plurality of turntables (42) that are each driven by a motor and that serve to orient and/or position the containers (12), in which method the motor drives (44) of the turntables (42) are each monitored separately, so that, if an error occurs with one or more of the turntable drives (44), the affected defective turntable drives (44) are deactivated while the machine and/or the stations located downstream continue to be operated.

Abstract: A star wheel H of a blow molding machine 13 constituting a blow molding line 2 as a master machine driven by a motor M is provided with an encoder E for generating a pulse depending on rotation of the star wheel H, and a filling line 3 as a slave machine driven by first to fifth servomotors SM1 to SM5 is controlled by second control means 5 based on a pulse from the encoder E. In the event of an abnormality in the blow molding line 2, the second control means 5 controls the filling line 3 based on a pulse from a pulse generator 5a instead of a pulse from an encoder E, and thus performs processing of a vessel retained by the filling line 3. Even in the event of an abnormality in the master machine, the slave machine can be continuously operated.

Abstract: A molded body cutting apparatus according to the present invention comprising a first conveyer member that conveys an extrusion-molded pillar-shaped ceramic molded body a cutting member that moves in a direction parallel to a movement direction of the above mentioned first conveyer member while moving also in a vertical direction, and cuts the above mentioned ceramic molded body to a predetermined length by passing through the interior of the above mentioned ceramic molded body and a second conveyer member that conveys a cut ceramic molded body cut to a predetermined length by the above mentioned cutting member, wherein a conveyance speed of the above mentioned first conveyer member and a movement speed of the above mentioned cutting member in the above mentioned parallel direction are almost the same, before the above mentioned ceramic molded body is cut, and each of the conveyance speed of the above mentioned first conveyer member, the movement speed of the above mentioned cutting member in the above mentio

Abstract: A method and apparatus for tracking a load on a conveyor system using the trailing edge of the load. The method includes the steps of sensing the trailing edge of the load with a first sensor and updating a load record for the load in response to sensing the trailing edge of the load with the first sensor. The apparatus may include a conveyor, a controller, and a sensor in communication with the controller for sensing the trailing edge of a load on the conveyor.

Abstract: A system for reducing torque disturbance includes a motor mechanically coupled to an endless belt. The motor is operable to drive the belt, and the belt has a seam that causes a torque disturbance to the system. The system includes a data structure having a set of values that indicates an amount of compensation for reducing the torque disturbance and a controller electrically coupled with the motor. The controller is configured to control the motor and reduce the torque disturbance based on the set of values in the data structure.

Abstract: A conveyor system for transported goods which are transported with a preset transport speed and method for operating the conveyor system are described. The individual conveyers of the system are driven by asynchronous motors. Sensors associated with the conveyors measure the actual transport speed of the transported goods on conveyors to determine the dependence of the actual transport speed on the load, such as the weight of the transported goods. A controller adjusts the speed of the conveyors based on the signals received from the sensors.

Abstract: An automated transport system for use in a material handling system. The automated transport system employs a distributed control system including a top level controller (transport controller), a plurality of second-level controllers (control logic computers) and a plurality of third-level controllers (intelligent drivers). The transport controller (TC) receives material commands from a conventional material control system (MCS). The TC breaks the command into sub-commands directing selected control logic computers (CLCs) to acquire, move to a destination or otherwise interact with a particular container designated by the MCS command. The transport controller selects the CLCs based on the transport system topology, the content of the MCS command and knowledge of which regions of the transport system are controlled by respective CLCs. Each CLC implements the sub-commands by issuing to the intelligent drivers low level control commands to accelerate, elevate, rotate, load or unload the container.

Abstract: A photosensitive material processing device for processing a photosensitive material with a processing liquid while conveying the photosensitive material by a roller pair. A driving device for providing a rotation drive to the roller pair. A drive controlling device that gradually raises voltage of the electric power at the time of starting the rotation drive of the roller pair.

Abstract: A conveyor for transporting parts includes a first electrical switch, a second electrical switch and an automatically movable stop. In another aspect of the present invention, an accumulating power roll conveyor system has two or more independently driven zones. Yet another aspect of the present invention provides for a part physically contacting against and actuating a switch as the part is located in a zone corresponding with the switch.