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74Counters, Panel Meters, Tachometers and TimersSpecial Function ControlsBasic Monitor ControlApril 2007ContentsDescriptionPageSpecial Function ControlsBasic Monitor Control . . . . 74Position Control . . . . . . . . . 75Ambassador SeriesClosed-Loop SpeedControl . . . . . . . . . . . . . . . . 77Cat. No. 54420400Cat. No. 56460400Product DescriptionThe BASIC monitor control (BMC) hastwo count inputs. Eight other rearterminal inputs and the fourteen frontpanel keys are user definable. Thesame is true for the two relay and fivetransistor outputs. Configuration isdone through a BASIC language programentered by the user, putting theBMC in specialized control applicationswhere dedicated count controlsare not as well suited.The 6460 sequential control can bethought of as a counter and/or timerwith 500 presets. Most users load anumber of programs or “recipes” intothe 6460 and have the operator selectone recipe at a time to run. The 6460 isoften found in roll forming and coilwinding applications and is used oninduction heat treating scanners.Application DescriptionCut-to-Length ApplicationIn a “typical” cut-to-length application,raw stock is pulled from a coil throughstraightening rollers, and fed past apneumatic shear. A quadrature encoderriding on the stock sends pulses to acounter that “measures” the amount ofstock fed. The primary counter functionis to supply an output signal to the shearto cut the stock at a certain “preset”length, then reset itself and start measuringthe next piece, and continue todo so until the desired number of pieceshave been cut.Modern counters provide two otherfunctions. The first is the slowdown, or“prewarn” output. The motor thatdrives the stock through the machineusually is run at a high speed until justbefore the cutoff occurs. A prewarn outputfrom the counter to the drive dropsthe motor speed so that the feed rate forthe stock slows to a “creep” speed thatis maintained until the final cutoff presetis reached. Due to variations in feedspeed and shear response, this creepspeed is necessary for achieving aconsistent cut length.The second additional function of thecounter is to count the number ofpieces that are cut and stop themachine when a preset number ofpieces is reached. This is done by asecond count register, called the batchcounter, inside the counter.FeaturesBASIC Monitor Control■ 6-digit, LED display■ 0.56" (14.2 mm) high characters■ User defined operation■ Utilizes BASIC language■ Outputs❑ 4 NPN transistors❑ 2 form-C relays❑ 1 pulse-width modulated■ 8 input lines■ 8k bytes of programmable memory■ 15V DC, 100 mA maximum outputpower■ 20 mA current loop communication■ Accepts 115/230V AC and 11 – 16VDC input power■ NEMA 4 front panel500 Level Sequence Controller■ 500 programming levels■ 32-character 2 line LCD display0.315" (8 mm) high characters■ 17 programmable count modes■ 4 programmable jump inputs■ Millisecond timing■ Count scaling■ Rate, total and batch count■ 16 NPN outputs■ 24V DC @ 800 mA and 15V DC @200 mA output power■ RS-232 communications■ 85 – 265V AC and 24V DC inputpower models■ Optional configuration softwareavailable■ NEMA 4 accessory kitStandards and Certifications■ UL and cUL Listed, CE MarkedProduct SelectionTable 72. Product Selection — Basic MonitorControlDescriptionCatalog*NumberBasic Monitor Control 54420400500 Level Sequence 56460400ControllerDimensions3.04(77.2)5.80(147.3)5.38(136.7)5.91(150.1)2.62(66.7)Panel Cutout: 5.433 x 2.677 (138 x 68)Figure 65. Dimensions — 54420400Approximate Dimensions in Inches (mm)6.18(157.0)8.07(205.0)7.24(183.9)3.74(95)5.35(135.9)Panel Cutout: 7.32 x 5.43 (186 x 138)Figure 66. Dimensions — 56460400Approximate Dimensions in Inches (mm)Discount Symbol . . . . . . . . . . . . . . . . . . . . . . . . CC-1* Consult Sales Office for PricingFor more information visit: www.eaton.comPG05400001E