LP0175

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LP0175 - LP0175

Bulletin SCUBD-D Drawing LP0175 Released 1/08 (717) 767-6511 (717) 764-0839 www.redlion.net
8-DIGIT COMPONENT COUNTER WITH 6-DIGIT DISPLAY
U.S. PATENT 4599600
TRUE QUADRATURE WITH RESOLUTIONS TIMES ENCODED INPUT BI-DIRECTIONAL COUNTING WITH UP/DOWN CONTROL POLARITY INDICATION POSITION DECIMAL POINT WITH SELECTABLE LEADING ZERO BLANKING SOLDERLESS, ELASTOMERIC INTERCONNECTS (Snap mounts directly onto P.C. board) ULTRA POWER, (Typical)
DESCRIPTION
completely self-contained counter/display module, treated component just like other I.C. provides capabilities with additional modes operation. These are: Bi-directional counting with UP/DOWN control ideal length measurement, where change direction occur; Quadrature counting (two pulse trains, shifted from another 90°) -commonly used positioning applications. additional capability inhibiting counts both inputs, used under certain conditions prevent false counts. snap mounts directly onto 1/16" thick P.C. Board which been etched with proper mating pattern (shown below). Four elastomeric connectors provide corrosion-proof, gas-tight contacts which afford high reliability. addition, available with bezel mounting kit, which will allow unit mounted panel instrument.
MOUNTING DIMENSIONS
Snap-in mounting onto P.C. Board facilitated two, split, lock-ramp pins which engage mounting holes drilled into P.C. Board. silicone rubber elastomeric connectors compress accommodate P.C. Board thickness variation ±0.005".
DIMENSIONS
Inches (mm)
P.C. BOARD LAYOUT
P.C. Board pads gold tin-lead plated. surface must flat without excessive tin-lead build-up. (Layout view from mounting side board.) area must clean free contaminants that proper electrical contact made. Note: hole size tolerances ±0.003" (0.08 other tolerances ±0.005" (0.13
BLOCK DIAGRAM
DEVICE CONNECTIONS
COUNT CMOS, Schmidt Trigger; used count count control input, depending mode operation selected. It's generally used count input. Modes Operation more details. COUNT CMOS, Schmidt Trigger; used count count control input, depending mode operation selected. It's generally used count control input. Modes Operation more details. RESET CMOS, Schmidt Trigger; counter reset held zero when this level. Note: Counter should always RESET zero whenever power first applied unit. INHIBIT CMOS, Schmidt Trigger; counting modes inhibited when this input level. This input asynchronous with inputs "B". LATCH CMOS, Schmidt Trigger; data display latched when this input high level. This input effect counting operations unit asynchronous with inputs "B". LZB1, LZB2, LZB3 CMOS, level sensitive; these inputs used leading zero blanking selection. Decimal Point Leading Zero Blanking Selection more details. MS1, MS2, MS3, CMOS, level sensitive; these inputs used Mode Selection. These modes are: BiDirectional Counting Quadrature Counting. Modes Operation more details. DP1, DP2, inputs which must connected either Turn Decimal Points "OFF" "ON". Decimal Point Leading Zero Blanking Selection more details. CMOS outputs LCD. Used turn decimal points "OFF" "ON". Decimal Point Leading Zero Blanking Selection more details. 6VDC Supply. Common Supply Inputs. unused inputs must tied VDD, whichever appropriate.
CAUTION
This device contains CMOS circuitry which requires special anti-static handling same degree required standard CMOS integrated circuits. Units should stored conductive packaging used ship devices. Containers should opened units handled only conductive table personnel wearing wrist-strap grounding equipment. These devices have same protection circuits standard CMOS devices prevent damage inputs nominal over-voltage.
MAXIMUM RATINGS (VOLTAGE REF. VSS)
RATING SYMBOL VALUE UNIT
Supply Voltage Input Voltage, Inputs Operating Temperature Storage Temperature
TSTG
-0.5 +6.5 -0.5 (VDD +0.5)
ELECTRICAL CHARACTERISTICS ±10% UNLESS OTHERWISE SPECIFIED
SYMBOL PARAMETER MIN. TYP. MAX. UNIT TEST CONDITION
IDDQ
Supply Voltage Supply Current Quiescent Current Input High Voltage Input Voltage Input Leakage Current Count Frequency (50% Duty Cycle) Reset Pulse Width
0.01
Modes Counting
Bi-directional Modes Bi-directional Modes 100, Quadrature Mode Quadrature Mode
TRST
MODES OPERATION
BI-DIRECTIONAL COUNTING MODES
Bi-Directional counting, input serves count input, while input serves direction control input. Times Mode when level, negative going transition will cause counter count positive direction. When high level, negative going transition will cause counter count negative direction. Table illustrates level settings Mode Select Inputs various modes BiDirectional counting. Times Mode works like Times Mode except counter increments both positive negative going transitions "A". There also Divide-By Modes which prescale display 100. This results capability displaying digit internal counter. (Along with Times this gives equivalent display.)
DECIMAL POINT LEADING ZERO BLANKING SELECTION
three decimal point inputs (DP1, DP2, DP3), signal outputs from counter chip. decimal point turned when input connected signal output; turned when connected output. Refer Table number leading zeros present display determined settings inputs. Table illustrates level settings required display single with leading zero blanking. Note that decimal point position independently selection leading zeros.
TABLE
MODE
TABLE
D.P.3 D.P.2 D.P.1
Times Times (x2, ÷10) Divide (x1, ÷10) Divide (x2, ÷100) Divide (x1, ÷100) Divide These factors include both resolution multiplier decade
prescaler. High Level Level
TABLE
MODES LZB3 LZB2 LZB1
QUADRATURE COUNTING MODES
Quadrature Times counting, input serves count input while input serves quadrature input. (Input pulse train shifted away from "A".) counter will count positive going direction when negative going signal low. counter will count negative going direction when positive going signal low. transitions ignored when high. These logic rules provide basis anti-jitter operation which will prevent false counts from occurring, back-lash, vibration, chatter, etc. Table illustrates level settings Mode Select Inputs various modes Quadrature counting. Times Quadrature Mode works same Times when low. when high, counts longer ignored "A". Instead, logic rules complemented, allowing both edges counted. This gives effective doubling display count more importantly, doubles resolution input. Times Mode extends this even further. Both serve count quadrature input. instance, will count input will quadrature input. another instance, will count input will quadrature input. This will result counts resolution four times greater than Times Mode. counting rates these modes, refer specification sheet (X2, ÷10, ÷100 give equivalent divide-by 2.5, 50).
Test Mode* 0000 00000 000000
Test Mode intended factory only.
TABLE
MODE
Times Times Times (x4, ÷10) Divide 2.5* (x2, ÷10) Divide (x1, ÷10) Divide (x4, ÷100) Divide (x2, ÷100) Divide (x1, ÷100) Divide These factors include both resolution multiplier decade
prescaler. High Level Level
TYPICAL APPLICATIONS
QUADRATURE TIMES FOUR
this application, necessary keep track exact position work table. work table moved left right driven lead screw. Because requirements critical positioning direction reversal must satisfied, Quadrature Mode selected. RPGB with PPR, quadrature, current sinking output coupled screw shaft. screw shaft moves table inch every revolutions which yields pulses/inch travel. this application, higher degree resolution needed without using higher resolution sensor. Therefore, Times Four Quadrature Mode selected which results reading 1000 counts inch travel 0.001" increments resolution. drawing illustrates connections inputs mode select lines, including buffering inputs. (The diodes used block signal RPGB from inputs.) decimal point placed third position reading one-thousandth inch. With set-up shown, operator place table reference point desired, reset make measurements with regard this reference. Movement left this reference will provide negative reading, while movement right reference will provide positive numerical reading. Switching count quadrature inputs will cause movement left positive while movement right will negative (-). shown drawing, work table 53.475" left reference point.
BI-DIRECTION UP/DOWN COUNTING
this application, continuous coating adhesive applied flexible material, which then taken large roll. Whenever flaw detected, entire process stopped. Since inertia exists system, certain amount over-run will occur. This, turn, will require reversing system order bring flaw back adhesive applicator. used correct over-run problem causing count decrease when process reversed. Bi-Directional DOWN counting. Latch used "freeze" display when defect occurs. Input serves count input which connected open collector output Length Sensor. This sensor generates pulses/foot material travel. (With pulses/foot going into counter, decimal point selected that display will indicate hundreths feet.) Input serves UP/DOWN direction control pin. This connected contact which opens when system reverses direction, causing counter count "down". Since unit measuring hundreths foot very large rolls used, possible that count could exceed display capability digits. avoid this problem, button connected which, when pressed, causes unit display most significant digits internal 8-digit counter. addition, decimal point removed when button held down. operation system described follows. Whenever flaw detected, Latch will pulled high, "freezing" display reading where flaw occurred. same time, machine stopped applicator turned off. inertia within system, internal counts increase until system comes complete stop. operator then notes reading counter display, releases latch (the display then reveals total length), reverses machine until displayed value matches noted value. When this match occurs, flawed area beneath applicator area where corrected.
PANEL BEZEL (P/N HWK60000)
This provides convenient adapt panel mounting. includes black plastic bezel, panel internal window gaskets, P.C. Board, ribbon cable mounting screws.
ASSEMBLY
DIMENSIONS PANEL CUT-OUT inches (mm)
PANEL CUT-OUT FRONT VIEW
PROTOTYPING BOARD (P/N DMOSCB04)
This board handy doing experimental prototyping work with easily plugs onto standard 0.1" spacing bread boards. This turn, greatly simplifies bread board work.
PROTOTYPING BOARD DMOSCB04
ORDERING INFORMATION
MODEL DESCRIPTION PART NUMBER
SCUBD
Display/Counter Module *Panel Bezel P.C. Board Cable *Panel Bezel P.C. Board Cable
SCUBD200 HWK30000 HWK60000 DMOSCB04
Prototype P.C. Board Does include SUBCUBD Display/Counter Module. Order SUBCUBD separately.
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LIMITED WARRANTY
Company warrants products manufactures against defects materials workmanship period limited years from date shipment, provided products have been stored, handled, installed, used under proper conditions. Company's liability under this limited warranty shall extend only repair replacement defective product, Company's option. Company disclaims liability affirmation, promise representation with respect products. customer agrees hold Lion Controls harmless from, defend, indemnify against damages, claims, expenses arising subsequent sales products products containing components manufactured based upon personal injuries, deaths, property damage, lost profits, other matters which Buyer, employees, sub-contractors extent liable, including without limitation penalties imposed Consumer Product Safety (P.L. 92-573) liability imposed upon person pursuant Magnuson-Moss Warranty (P.L. 93-637), effect amended hereafter. warranties expressed implied created with respect Company's products except those expressly contained herein. Customer acknowledges disclaimers limitations contained herein relies other warranties affirmations.
Lion Controls Lion Controls Willow Springs Circle York 17406 (717) 767-6511 (717) 764-0839 Lion Controls Printerweg 3821 Amersfoort Unit 101, XinAn Plaza Building No.99 Tianzhou Road ShangHai, P.R. China 200223 6113-3688 6113-3683

LP0175

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