Chapter 6 - AutomationDirect
Contents
1. quadrature input MA CoG ME Cee Em ee E zl A o GERS MODE Select output modes CTT offer 11 output modes among which mode S T and D are only valid with input modes Ud_A Ud_b and Ud_C ME Ogee AnA oA ee E e Select counting speed Maximum 10Kcps others 5K 1K 200 30 and 1cps mone Pulse width of output 1 The default output time is 0 02 second When the parameter is set to 0 00 second the output status will be maintained ON C ott Ek Kod Was woe A Pulse width of output 2 This paramter is adjustable according to different output modes selected If the output mode is C the default output time will be 0 02 second When the parameter is set to 0 00 second the output status will be maintained ON mone Set up the position of decimal point O no decimal point 1 one digit after decimal point 2 two digits after decimal point 3 three digits after decimal point EZEN OO GOS En 8 a E Set up pre scale value 1 000 default 1 1 Range 0 001 to 99 999 EEA Se res f lt Save the data while switching off the power When SAVE is selected the PV will be saved when CLEAR is selected the PV will not be saved PS Coo MSS oes BER Set up minimum width of reset signal Default 20ms 1ms is also selectable w Select input signal types NPN and PNP Back to Top 6 4 Digital Counter Timer Tach User Manual 1st Ed 1 800 633 0405 Y o M Automation Direct Timer Example2. APPLICATION EXAMPLES In This Chapter Counter Example EE 6 2 Counter Example EE ee EE EC 6 4 TMC EXAMDPIC 2c ckataracoecried EE 6 5 Tach Example d resa 4 secede eee eae EE eg 6 7 TAC ee 45 dan SEELEN nde yes ee ree eae yes 64 6 8 www automationdirect com Digital Counter Timer Tach User Manual 1st Ed 6 1 WAUTOMATIONDIRECT Counter Example 1 1 Stage Counting EEE Counting Up i Using the counter feature of the CTT to count the total number of pieces in a box to signal a conveyor to advance to the next station Counting Input Output 1 Conveyor i Control Input Mode Counting Up sl With the input signal OFF at input CP2 each leading edge of the input signal at CP1 will increment the count present value PV by 1 Turning ON the input signal at CP2 will prohibit the input signal at CP1 from incrementing the PV Or with the input signal ON at input CP1 each trailing edge of the input signal at CP2 will increment the count present value PV by 1 Turning OFF the input signal at CP1 will prohibit the input signal at CP2 from incrementing the PV Output Mode Mode F Si When the count present value PV counts up to the count setting value SV both outputs 1 and 2 will turn ON The count PV will continue to increment with each input signal The leading edge of a reset input signal at RST1 will turn OFF both outputs reset the count PV to 0 and prohibit an input signal from incrementing the count PV
3. 01 to 99 999 MODE y Set up the delay time after switching on the power 0 0 default The tachometer will start to run when the set delay time is due after the power is switched on Setup range 0 1 to 99 9 seconds EREA ooo ug woe Set up average value of the input filter The average value is for making the present value detected by the tachometer Y more stable The setup range is 0 to 3 1 2 data 2 4 data 3 8 data For example if you select 3 the system will average the 8 present values from the tachometer to make the present value displayed on the screen more stable PS Og oO ag Ges E es Set up minimum width of reset signal Default 20ms 1ms is also selectable Y Select input signal types NPN and PNP Back to Top www automationdirect com Digital Counter Timer Tach User Manual 1st Ed 6 7 WAUTOMATIONDIRECT Tach Example 2 Convert an encoder signal into surface speed of a conveyor In order to monitor the speed of a part deliver conveyor belt an encoder with a surface contact measuring wheel is attached to a conveyor where wheel will be in constant contact with the conveyor Then the PSCALE is set to convert the pulse signal of the encoder into feet per minute Two variables are required the Encoders pulses per revolution ppr the diameter of the measuring wheel For example when using an AutomationDirect TRD N100 RZWD encoder which has 100 ppr in conjunction with a measuring wheel that is 6 inch in
4. A basic Timer used to control a clamp time of a compression model press When the operator signals the mold is loaded with material by pressing the start button the hydraulic cylinder closes the press to make a limit switch which starts the CTT timing Upon completion of the timer cycle Output 1 is turned on and the press is opened by the hydraulic cylinder Signal On Delay 1 GEEER With power applied to the CTT the leading edge of an input signal at START will begin the timing period setting value SV timing up or down based on parameter 8 REER or by DIP Switch 2 At the end of the timing period both outputs will turn ON momentarily for the time set in the output pulse width parameter BEHE or will be maintained ON if the output pulse width parameter BEES is set to 0 00 The trailing edge of the start signal has no effect on the outputs or timing period The leading edge of an reset input signal at RST1 will turn OFF the outputs and reset the timing period The reset signal minimum pulse width is set by reset pulse width parameter REER or DIP Switch 8 The leading edge of an input pause signal at GATE will pause the timing period after it has been started The timing period will continue after the trailing edge of the pause Gate signal When power is removed both outputs will turn OFF and the timing period will be reset Reset Hydraulic Control Panel www automationdirect com Digital Counte
5. The trailing edge of the reset signal at RST1 enables counting to begin 6 2 Digital Counter Timer Tach User Manual Ist Ed 1 800 633 0405 Setting up the parameters in the counter for 1 Stage Counting To enter the page for parameter setting of the counter press A for the main menu for more than 3 seconds After the setup is completed press W for more than 3 seconds under any of the parameter page you are in and return to the main menu Select functions There are 4 modes in CTT left to right timer counter tachometer and timer counter MODE y Select counter functions 1 stage counting 2 stage counting batch counting total counting dual counting MODE y Select input modes counting up counting down counting up command down counting up counting down quadrature input MODE y Select output modes CTT offer 11 output modes among which mode S T and D are only valid with input modes Ud_A Ud_b and Ud C WEISS oon PARA Soe Soe A Sol g DE y we Bae A mta See BR Select counting speed Maximum 10Kcps others 5K 1K 200 30 and cps MODE y Pulse width of output 1 The default output time is 0 02 second When the parameter is set to 0 00 second the output status will be maintained ON MODE A Pulse width of output 2 This paramter is adjustable according to different output modes selected If the output mode is C the default output time will be 0 02 second When the parameter is set to 0 00 second the outp
6. ange is 0 to 3 1 2 data 2 4 data 3 8 data For example if you select 3 the system will averagethe 8 present values from the tachometer to make the present value displayed on the screen more stable GC HESE Metten s Y Set up minimum width of reset signal Default 20ms 1ms is also selectable Eee Uu Select input signal types NPN and PNP cy Back to Top 6 8 Digital Counter Timer Tach User Manual Ist Ed 1 800 633 0405
7. diameter the calculation would be as follows Wheel Diameter or 6 3 1416 or 18 85 in circumference 1 revolution of the wheel translates to 18 85 of linear motion PSCALE wheel circumference ppr or 18 85 100 0 1885 PSCALE D D Measuring Wheel Select functions There are 4 modes in CTT left to right timer counter tachometer and timer counter Select output modes There are 4 output modes 2Lo1Lo 2Lo1Hi 2Hi1Lo and 2Hi1Hi For example when you select 1Hi1Lo and assume the first set value is 100 2Hi and the second 50 1Lo the output value of the tachometer will be below 100 2Hi and above 50 1Lo and CTA will not perform an output If the set value exceeds the range CTT will perform an output Select rotation speed Maximum 10Kcps others 5K 1K 200 30 and 1cps IMODE y Set up the position of decimal point 0 no decimal point 1 one digit after decimal point 2 two digits after decimal point 3 three digits after decimal point EZMA aA So E kA Di E MODE y Set up pre scale value 1 000 default 1 1 Range 0 001 to 99 999 EA o me IMODE y Set up the delay time after switching on the power 0 0 default The tachometer will start to run when the set delay time is due after the power is switched on Setup range 0 1 to 99 9 seconds PPA 177 Was MODE Set up average value of the input filter The average value is for making the present value detected by the tachometer y more stable The setup r
8. r Timer Tach User Manual 1st Ed 6 5 WAUTOMATIONDIRECT Setting Timer Parameters To enter the page for parameter setting of the timer press DSDS in the main menu for more than 3 seconds After the setup is complete press DES for more than 3 seconds under any of the paramter page you are in and return to the main menu Select funtions There are 4 modes in CTT left to right timer counter tachometer and timer counter Word v Select timer mode timing up and timing down MODE Select output modes There are 12 output modes in the timer The user can choose the mode that best meets the demand Select display unit the min unit 10ms to the max unit hour are selectable Select pulse width of output 1 The default output time is 0 02 second When the parameter is set to 0 00 second the output status will be maintained ON v Select min width of reset signal The defaul value is 20ms can be set to ims A Select input signal types NPN and PNP Back to Top 6 6 Digital Counter Timer Tach User Manual Ist Ed 1 800 633 0405 Tach Example 1 Using PSCALE to convert pulses into engineering units The PSCALE feature of the CTT is very useful in converting the pulsed signal from an encoder or sensor into some usable unit of measurement For example if one was to connect a proximity switch to the CTT to monitor the speed of a motor using a sensing gear there is a simple calculation to convert the pulses from the
9. sensor to Motor RPMs Using this formula you can calculate a PSCALE value to change a pulse signal into RPMs First obtain the pulses per revolution ppr or number of teeth on the sensing gear for example in the illustration below there are 38 teeth on the gear or 38 ppr If the gear is coupled directly to the motor this is all that is required to perform the calculation PSCALE 60 ppr or 60 38 PSCALE 1579 With the PSCALE set to 1 579 for every 38 input cycles the CTT will display a value of 1 we eg 8 P q By VAUTOMATIONDIRECTE Keypad set up of the parameters in the Tachometer Select functions There are 4 modes in CTT left to right timer counter tachometer and timer counter MODE Select output modes There are 4 output modes 2Lo1Lo 2Lo1Hi 2Hi1Lo and 2Hi1Hi For example when you select y 2Hi1Lo and assume the first set value is 100 2Hi and the second 50 1Lo the output value of the tachometer will be below 100 2Hi and above 50 1Lo and CTT will not perform an output If the set value exceeds the range CTT will perform an output Sie Clo Se ai lof ER lL a MODE Select rotation speed Maximum 10Kcps others 5K 1K 200 30 and 1cps MODE y Set up the position of decimal point 0 no decimal point 1 one digit after decimal point 2 two digits after decimal point 3 three digits after decimal point EEA SR eA eas us HES y Set up pre scale value 1 000 default 1 1 Range 0 0
10. ut status will be maintained ON MODE y Set up the position of decimal point 0 no decimal point 1 one digit after decimal point 2 two digits after decimal point 3 three digits after decimal point PRs Koik E a Set zi bees y Set up pre scale value 1 000 default 1 1 Range 0 001 to 99 999 REPRE oon Haag MODE y Save the data while switching off the power When SAVE is selected the PV will be saved when CLEAR is selected the PV will not be saved Set up minimum width of reset signal Default 20ms 1ms is also selectable Select input signal types NPN and PNP w Back to Top www automationdirect com Digital Counter Timer Tach User Manual 1st Ed 6 3 WAUTOMATIONDIRECT Counter Example 2 Example of cut to length operation Using the counter function in CTT and acquires the feedback signal from the encoder for measuring the actual distance traveled by the conveyor When the set distance is reached the output signal will enable the knife for the cutting Counter Ce Encoder Acquiring feedback pulse signals form the encoder for enagling the cutting of the knife Select functions There are 4 modes in CTT left to right timer counter tachometer and timer counter MODE y Select counter functions 1 stage counting 2 stage counting batch counting total counting dual counting word y Select input modes counting up counting down command counting up down counting up counting down
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